dlsch_demodulation.c 256 KB
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/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
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 * the OAI Public License, Version 1.1  (the "License"); you may not use this file
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 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.openairinterface.org/?page_id=698
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */
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/*! \file PHY/LTE_TRANSPORT/dlsch_demodulation.c
 * \brief Top-level routines for demodulating the PDSCH physical channel from 36-211, V8.6 2009-03
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 * \author R. Knopp, F. Kaltenberger,A. Bhamri, S. Aubert, X. Xiang
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 * \date 2011
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 * \version 0.1
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 * \company Eurecom
 * \email: knopp@eurecom.fr,florian.kaltenberger@eurecom.fr,ankit.bhamri@eurecom.fr,sebastien.aubert@eurecom.fr
 * \note
 * \warning
 */
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#include "PHY/defs_UE.h"
#include "PHY/phy_extern_ue.h"
#include "SCHED_UE/sched_UE.h"
#include "transport_ue.h"
#include "transport_proto_ue.h"
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#include "PHY/sse_intrin.h"
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#include "T.h"
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#define NOCYGWIN_STATIC
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/* dynamic shift for LLR computation for TM3/4
 * set as command line argument, see lte-softmodem.c
 * default value: 0
 */
int16_t dlsch_demod_shift = 0;
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int16_t interf_unaw_shift = 13;
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//#define DEBUG_HARQ

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//#define DEBUG_PHY 1
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//#define DEBUG_DLSCH_DEMOD 1
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//#define DISABLE_LOG_X
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// [MCS][i_mod (0,1,2) = (2,4,6)]
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unsigned char offset_mumimo_llr_drange_fix=0;
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//inferference-free case
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unsigned char interf_unaw_shift_tm4_mcs[29]={5, 3, 4, 3, 3, 2, 1, 1, 2, 0, 1, 1, 1, 1, 0, 0,
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                                             1, 1, 1, 1, 0, 2, 1, 0, 1, 0, 1, 0, 0} ;
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unsigned char interf_unaw_shift_tm1_mcs[29]={5, 5, 4, 3, 3, 3, 2, 2, 4, 4, 2, 3, 3, 3, 1, 1,
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                                             0, 1, 1, 2, 5, 4, 4, 6, 5, 1, 0, 5, 6} ; // mcs 21, 26, 28 seem to be errorneous
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/*
//original values from sebastion + same hand tuning
unsigned char offset_mumimo_llr_drange[29][3]={{8,8,8},{7,7,7},{7,7,7},{7,7,7},{6,6,6},{6,6,6},{6,6,6},{5,5,5},{4,4,4},{1,2,4}, // QPSK
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{5,5,4},{5,5,5},{5,5,5},{3,3,3},{2,2,2},{2,2,2},{2,2,2}, // 16-QAM
{2,2,1},{3,3,3},{3,3,3},{3,3,1},{2,2,2},{2,2,2},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0}}; //64-QAM
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*/
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 /*
 //first optimization try
 unsigned char offset_mumimo_llr_drange[29][3]={{7, 8, 7},{6, 6, 7},{6, 6, 7},{6, 6, 6},{5, 6, 6},{5, 5, 6},{5, 5, 6},{4, 5, 4},{4, 3, 4},{3, 2, 2},{6, 5, 5},{5, 4, 4},{5, 5, 4},{3, 3, 2},{2, 2, 1},{2, 1, 1},{2, 2, 2},{3, 3, 3},{3, 3, 2},{3, 3, 2},{3, 2, 1},{2, 2, 2},{2, 2, 2},{0, 0, 0},{0, 0, 0},{0, 0, 0},{0, 0, 0},{0, 0, 0}};
 */
 //second optimization try
 /*
   unsigned char offset_mumimo_llr_drange[29][3]={{5, 8, 7},{4, 6, 8},{3, 6, 7},{7, 7, 6},{4, 7, 8},{4, 7, 4},{6, 6, 6},{3, 6, 6},{3, 6, 6},{1, 3, 4},{1, 1, 0},{3, 3, 2},{3, 4, 1},{4, 0, 1},{4, 2, 2},{3, 1, 2},{2, 1, 0},{2, 1, 1},{1, 0, 1},{1, 0, 1},{0, 0, 0},{1, 0, 0},{0, 0, 0},{0, 1, 0},{1, 0, 0},{0, 0, 0},{0, 0, 0},{0, 0, 0},{0, 0, 0}};  w
 */
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unsigned char offset_mumimo_llr_drange[29][3]= {{0, 6, 5},{0, 4, 5},{0, 4, 5},{0, 5, 4},{0, 5, 6},{0, 5, 3},{0, 4, 4},{0, 4, 4},{0, 3, 3},{0, 1, 2},{1, 1, 0},{1, 3, 2},{3, 4, 1},{2, 0, 0},{2, 2, 2},{1, 1, 1},{2, 1, 0},{2, 1, 1},{1, 0, 1},{1, 0, 1},{0, 0, 0},{1, 0, 0},{0, 0, 0},{0, 1, 0},{1, 0, 0},{0, 0, 0},{0, 0, 0},{0, 0, 0},{0, 0, 0}};
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extern void print_shorts(char *s,int16_t *x);
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int rx_pdsch(PHY_VARS_UE *ue,
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             PDSCH_t type,
             unsigned char eNB_id,
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             unsigned char eNB_id_i, //if this == ue->n_connected_eNB, we assume MU interference
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             uint32_t frame,
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             uint8_t subframe,
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             unsigned char symbol,
             unsigned char first_symbol_flag,
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             RX_type_t rx_type,
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             unsigned char i_mod,
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             unsigned char harq_pid)
{

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  LTE_UE_COMMON *common_vars  = &ue->common_vars;
  LTE_UE_PDSCH **pdsch_vars;
  LTE_DL_FRAME_PARMS *frame_parms    = &ue->frame_parms;
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  PHY_MEASUREMENTS *measurements = &ue->measurements;
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  LTE_UE_DLSCH_t   **dlsch;
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  int avg[4];
  int avg_0[2];
  int avg_1[2];
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#if UE_TIMING_TRACE
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  uint8_t slot = 0;
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#endif
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  unsigned char aatx,aarx;
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  unsigned short nb_rb = 0, round;
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  int avgs = 0, rb;
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  LTE_DL_UE_HARQ_t *dlsch0_harq,*dlsch1_harq = 0;
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  uint8_t beamforming_mode;
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  uint32_t *rballoc;
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  int32_t **rxdataF_comp_ptr;
  int32_t **dl_ch_mag_ptr;
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  int32_t codeword_TB0 = -1;
  int32_t codeword_TB1 = -1;
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  switch (type) {
  case SI_PDSCH:
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    pdsch_vars = &ue->pdsch_vars_SI[eNB_id];
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    dlsch = &ue->dlsch_SI[eNB_id];
    dlsch0_harq = dlsch[0]->harq_processes[harq_pid];
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    beamforming_mode  = 0;
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    break;
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  case RA_PDSCH:
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    pdsch_vars = &ue->pdsch_vars_ra[eNB_id];
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    dlsch = &ue->dlsch_ra[eNB_id];
    dlsch0_harq = dlsch[0]->harq_processes[harq_pid];
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    beamforming_mode  = 0;
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    break;
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  case PDSCH:
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    pdsch_vars = ue->pdsch_vars[ue->current_thread_id[subframe]];
    dlsch = ue->dlsch[ue->current_thread_id[subframe]][eNB_id];
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    //printf("status TB0 = %d, status TB1 = %d \n", dlsch[0]->harq_processes[harq_pid]->status, dlsch[1]->harq_processes[harq_pid]->status);
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    LOG_D(PHY,"AbsSubframe %d.%d / Sym %d harq_pid %d,  harq status %d.%d \n",
                   frame,subframe,symbol,harq_pid,
                   dlsch[0]->harq_processes[harq_pid]->status,
                   dlsch[1]->harq_processes[harq_pid]->status);

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    if ((dlsch[0]->harq_processes[harq_pid]->status == ACTIVE) &&
        (dlsch[1]->harq_processes[harq_pid]->status == ACTIVE)){
      codeword_TB0 = dlsch[0]->harq_processes[harq_pid]->codeword;
      codeword_TB1 = dlsch[1]->harq_processes[harq_pid]->codeword;
      dlsch0_harq = dlsch[codeword_TB0]->harq_processes[harq_pid];
      dlsch1_harq = dlsch[codeword_TB1]->harq_processes[harq_pid];
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#ifdef DEBUG_HARQ
      printf("[DEMOD] I am assuming both TBs are active\n");
#endif
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    }
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     else if ((dlsch[0]->harq_processes[harq_pid]->status == ACTIVE) &&
              (dlsch[1]->harq_processes[harq_pid]->status != ACTIVE) ) {
      codeword_TB0 = dlsch[0]->harq_processes[harq_pid]->codeword;
      dlsch0_harq = dlsch[0]->harq_processes[harq_pid];
      dlsch1_harq = NULL;
      codeword_TB1 = -1;
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#ifdef DEBUG_HARQ
      printf("[DEMOD] I am assuming only TB0 is active\n");
#endif
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    }
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     else if ((dlsch[0]->harq_processes[harq_pid]->status != ACTIVE) &&
              (dlsch[1]->harq_processes[harq_pid]->status == ACTIVE) ){
      codeword_TB1 = dlsch[1]->harq_processes[harq_pid]->codeword;
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      dlsch0_harq  = dlsch[1]->harq_processes[harq_pid];
      dlsch1_harq  = NULL;
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      codeword_TB0 = -1;
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#ifdef DEBUG_HARQ
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      printf("[DEMOD] I am assuming only TB1 is active, it is in cw %d\n", dlsch0_harq->codeword);
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#endif
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    }
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    else {
      LOG_E(PHY,"[UE][FATAL] Frame %d subframe %d: no active DLSCH\n",ue->proc.proc_rxtx[0].frame_rx,subframe);
      return(-1);
    }
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    beamforming_mode  = ue->transmission_mode[eNB_id]<7?0:ue->transmission_mode[eNB_id];
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    break;

  default:
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    LOG_E(PHY,"[UE][FATAL] Frame %d subframe %d: Unknown PDSCH format %d\n",ue->proc.proc_rxtx[0].frame_rx,subframe,type);
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    return(-1);
    break;
  }
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#ifdef DEBUG_HARQ
  printf("[DEMOD] MIMO mode = %d\n", dlsch0_harq->mimo_mode);
  printf("[DEMOD] cw for TB0 = %d, cw for TB1 = %d\n", codeword_TB0, codeword_TB1);
#endif
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  DevAssert(dlsch0_harq);
  round = dlsch0_harq->round;
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  //printf("round = %d\n", round);
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  if (eNB_id > 2) {
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    LOG_W(PHY,"dlsch_demodulation.c: Illegal eNB_id %d\n",eNB_id);
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    return(-1);
  }
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  if (!common_vars) {
    LOG_W(PHY,"dlsch_demodulation.c: Null common_vars\n");
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    return(-1);
  }

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  if (!dlsch[0]) {
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    LOG_W(PHY,"dlsch_demodulation.c: Null dlsch_ue pointer\n");
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    return(-1);
  }

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  if (!pdsch_vars) {
    LOG_W(PHY,"dlsch_demodulation.c: Null pdsch_vars pointer\n");
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    return(-1);
  }
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  if (!frame_parms) {
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    LOG_W(PHY,"dlsch_demodulation.c: Null frame_parms\n");
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    return(-1);
  }
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  if (((frame_parms->Ncp == NORMAL) && (symbol>=7)) ||
      ((frame_parms->Ncp == EXTENDED) && (symbol>=6)))
    rballoc = dlsch0_harq->rb_alloc_odd;
  else
    rballoc = dlsch0_harq->rb_alloc_even;
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  if (dlsch0_harq->mimo_mode>DUALSTREAM_PUSCH_PRECODING) {
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    LOG_E(PHY,"This transmission mode is not yet supported!\n");
    return(-1);
  }
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  if ((dlsch0_harq->mimo_mode==LARGE_CDD) || ((dlsch0_harq->mimo_mode>=DUALSTREAM_UNIFORM_PRECODING1) && (dlsch0_harq->mimo_mode<=DUALSTREAM_PUSCH_PRECODING)))  {
    DevAssert(dlsch1_harq);
    if (eNB_id!=eNB_id_i) {
      LOG_E(PHY,"TM3/TM4 requires to set eNB_id==eNB_id_i!\n");
      return(-1);
    }
  }

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#if UE_TIMING_TRACE
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  if(symbol > ue->frame_parms.symbols_per_tti>>1)
  {
      slot = 1;
  }
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#endif

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#ifdef DEBUG_HARQ
  printf("Demod  dlsch0_harq->pmi_alloc %d\n",  dlsch0_harq->pmi_alloc);
#endif
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  if (frame_parms->nb_antenna_ports_eNB>1 && beamforming_mode==0) {
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#ifdef DEBUG_DLSCH_MOD
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    LOG_I(PHY,"dlsch: using pmi %x (%p), rb_alloc %x\n",pmi2hex_2Ar1(dlsch0_harq->pmi_alloc),dlsch[0],dlsch0_harq->rb_alloc_even[0]);
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#endif
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#if UE_TIMING_TRACE
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    start_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
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#endif
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    nb_rb = dlsch_extract_rbs_dual(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
                                   common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id],
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                                   pdsch_vars[eNB_id]->rxdataF_ext,
                                   pdsch_vars[eNB_id]->dl_ch_estimates_ext,
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                                   dlsch0_harq->pmi_alloc,
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                                   pdsch_vars[eNB_id]->pmi_ext,
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                                   rballoc,
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                                   symbol,
                                   subframe,
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                                   ue->high_speed_flag,
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                                   frame_parms,
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                                   dlsch0_harq->mimo_mode);
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#ifdef DEBUG_DLSCH_MOD
      printf("dlsch: using pmi %lx, rb_alloc %x, pmi_ext ",pmi2hex_2Ar1(dlsch0_harq->pmi_alloc),*rballoc);
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       for (rb=0;rb<nb_rb;rb++)
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          printf("%d",pdsch_vars[eNB_id]->pmi_ext[rb]);
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       printf("\n");
#endif
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   if (rx_type >= rx_IC_single_stream) {
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      if (eNB_id_i<ue->n_connected_eNB) // we are in TM5
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      nb_rb = dlsch_extract_rbs_dual(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
                                       common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id_i],
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                                       pdsch_vars[eNB_id_i]->rxdataF_ext,
                                       pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
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                                       dlsch0_harq->pmi_alloc,
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                                       pdsch_vars[eNB_id_i]->pmi_ext,
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                                       rballoc,
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                                       symbol,
                                       subframe,
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                                       ue->high_speed_flag,
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                                       frame_parms,
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                                       dlsch0_harq->mimo_mode);
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      else
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        nb_rb = dlsch_extract_rbs_dual(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
                                       common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id],
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                                       pdsch_vars[eNB_id_i]->rxdataF_ext,
                                       pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
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                                       dlsch0_harq->pmi_alloc,
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                                       pdsch_vars[eNB_id_i]->pmi_ext,
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                                       rballoc,
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                                       symbol,
                                       subframe,
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                                       ue->high_speed_flag,
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                                       frame_parms,
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                                       dlsch0_harq->mimo_mode);
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    }
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  } else if (beamforming_mode==0) { //else if nb_antennas_ports_eNB==1 && beamforming_mode == 0
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    nb_rb = dlsch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
                                     common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id],
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                                     pdsch_vars[eNB_id]->rxdataF_ext,
                                     pdsch_vars[eNB_id]->dl_ch_estimates_ext,
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                                     dlsch0_harq->pmi_alloc,
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                                     pdsch_vars[eNB_id]->pmi_ext,
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                                     rballoc,
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                                     symbol,
                                     subframe,
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                                     ue->high_speed_flag,
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                                     frame_parms);

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   if (rx_type==rx_IC_single_stream) {
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     if (eNB_id_i<ue->n_connected_eNB)
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        nb_rb = dlsch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
                                         common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id_i],
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                                         pdsch_vars[eNB_id_i]->rxdataF_ext,
                                         pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
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                                         dlsch0_harq->pmi_alloc,
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                                         pdsch_vars[eNB_id_i]->pmi_ext,
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                                         rballoc,
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                                         symbol,
                                         subframe,
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                                         ue->high_speed_flag,
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                                         frame_parms);
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      else
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        nb_rb = dlsch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
                                         common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id],
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                                         pdsch_vars[eNB_id_i]->rxdataF_ext,
                                         pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
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                                         dlsch0_harq->pmi_alloc,
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                                         pdsch_vars[eNB_id_i]->pmi_ext,
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                                         rballoc,
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                                         symbol,
                                         subframe,
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                                         ue->high_speed_flag,
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                                         frame_parms);
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    }
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  } else if (beamforming_mode==7) { //else if beamforming_mode == 7
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    nb_rb = dlsch_extract_rbs_TM7(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
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                                  pdsch_vars[eNB_id]->dl_bf_ch_estimates,
                                  pdsch_vars[eNB_id]->rxdataF_ext,
                                  pdsch_vars[eNB_id]->dl_bf_ch_estimates_ext,
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                                  rballoc,
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                                  symbol,
                                  subframe,
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                                  ue->high_speed_flag,
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                                  frame_parms);
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  } else if(beamforming_mode>7) {
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    LOG_W(PHY,"dlsch_demodulation: beamforming mode not supported yet.\n");
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  }
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  //printf("nb_rb = %d, eNB_id %d\n",nb_rb,eNB_id);
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  if (nb_rb==0) {
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    //    LOG_D(PHY,"dlsch_demodulation.c: nb_rb=0\n");
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    return(-1);
  }
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#if UE_TIMING_TRACE
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    stop_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
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#if DISABLE_LOG_X
    printf("[AbsSFN %d.%d] Slot%d Symbol %d Flag %d type %d: Pilot/Data extraction %5.2f \n",frame,subframe,slot,
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            symbol,ue->high_speed_flag,type,symbol,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
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#else
    LOG_I(PHY, "[AbsSFN %d.%d] Slot%d Symbol %d Flag %d type %d: Pilot/Data extraction  %5.2f \n",frame,subframe,slot,symbol,
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            ue->high_speed_flag,type,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
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#endif
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#endif

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#if UE_TIMING_TRACE
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    start_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
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#endif
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  aatx = frame_parms->nb_antenna_ports_eNB;
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  aarx = frame_parms->nb_antennas_rx;

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  dlsch_scale_channel(pdsch_vars[eNB_id]->dl_ch_estimates_ext,
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                      frame_parms,
                      dlsch,
                      symbol,
                      nb_rb);
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  if ((dlsch0_harq->mimo_mode<DUALSTREAM_UNIFORM_PRECODING1) &&
      (rx_type==rx_IC_single_stream) &&
      (eNB_id_i==ue->n_connected_eNB) &&
      (dlsch0_harq->dl_power_off==0)
     )  // TM5 two-user
  {
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    dlsch_scale_channel(pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
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                        frame_parms,
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                        dlsch,
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                        symbol,
                        nb_rb);
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  }
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#if UE_TIMING_TRACE
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    stop_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
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#if DISABLE_LOG_X
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    printf("[AbsSFN %d.%d] Slot%d Symbol %d: Channel Scale %5.2f \n",frame,subframe,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
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#else
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    LOG_I(PHY, "[AbsSFN %d.%d] Slot%d Symbol %d: Channel Scale  %5.2f \n",frame,subframe,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
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#endif
#endif

#if UE_TIMING_TRACE
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    start_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
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#endif
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  if (first_symbol_flag==1) {
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    if (beamforming_mode==0){
      if (dlsch0_harq->mimo_mode<LARGE_CDD) {
        dlsch_channel_level(pdsch_vars[eNB_id]->dl_ch_estimates_ext,
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                           frame_parms,
                           avg,
                           symbol,
                           nb_rb);
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        avgs = 0;
        for (aatx=0;aatx<frame_parms->nb_antenna_ports_eNB;aatx++)
          for (aarx=0;aarx<frame_parms->nb_antennas_rx;aarx++)
            avgs = cmax(avgs,avg[(aatx<<1)+aarx]);

        pdsch_vars[eNB_id]->log2_maxh = (log2_approx(avgs)/2)+1;
     }
     else if ((dlsch0_harq->mimo_mode == LARGE_CDD) ||
           ((dlsch0_harq->mimo_mode >=DUALSTREAM_UNIFORM_PRECODING1) &&
            (dlsch0_harq->mimo_mode <=DUALSTREAM_PUSCH_PRECODING)))
     {
      dlsch_channel_level_TM34(pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                 frame_parms,
                                 pdsch_vars[eNB_id]->pmi_ext,
                                 avg_0,
                                 avg_1,
                                 symbol,
                                 nb_rb,
                                 dlsch0_harq->mimo_mode);

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      LOG_D(PHY,"Channel Level TM34  avg_0 %d, avg_1 %d, rx_type %d, rx_standard %d, dlsch_demod_shift %d \n", avg_0[0],
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              avg_1[0], rx_type, rx_standard, dlsch_demod_shift);
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        if (rx_type>rx_standard) {
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          avg_0[0] = (log2_approx(avg_0[0])/2) + dlsch_demod_shift;// + 2 ;//+ 4;
          avg_1[0] = (log2_approx(avg_1[0])/2) + dlsch_demod_shift;// + 2 ;//+ 4;
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          pdsch_vars[eNB_id]->log2_maxh0 = cmax(avg_0[0],0);
          pdsch_vars[eNB_id]->log2_maxh1 = cmax(avg_1[0],0);
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         // printf("dlsch_demod_shift  %d\n", dlsch_demod_shift);
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         }
          else {
          avg_0[0] = (log2_approx(avg_0[0])/2) - 13 + interf_unaw_shift;
          avg_1[0] = (log2_approx(avg_1[0])/2) - 13 + interf_unaw_shift;
          pdsch_vars[eNB_id]->log2_maxh0 = cmax(avg_0[0],0);
          pdsch_vars[eNB_id]->log2_maxh1 = cmax(avg_1[0],0);
        }
      }
      else if (dlsch0_harq->mimo_mode<DUALSTREAM_UNIFORM_PRECODING1) {// single-layer precoding (TM5, TM6)
        if ((rx_type==rx_IC_single_stream) && (eNB_id_i==ue->n_connected_eNB) && (dlsch0_harq->dl_power_off==0)) {
            dlsch_channel_level_TM56(pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                frame_parms,
                                pdsch_vars[eNB_id]->pmi_ext,
                                avg,
                                symbol,
                                nb_rb);
            avg[0] = log2_approx(avg[0]) - 13 + offset_mumimo_llr_drange[dlsch0_harq->mcs][(i_mod>>1)-1];
            pdsch_vars[eNB_id]->log2_maxh = cmax(avg[0],0);
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        }
        else if (dlsch0_harq->dl_power_off==1) { //TM6
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          dlsch_channel_level(pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                   frame_parms,
                                   avg,
                                   symbol,
                                   nb_rb);
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          avgs = 0;
          for (aatx=0;aatx<frame_parms->nb_antenna_ports_eNB;aatx++)
            for (aarx=0;aarx<frame_parms->nb_antennas_rx;aarx++)
              avgs = cmax(avgs,avg[(aatx<<1)+aarx]);
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          pdsch_vars[eNB_id]->log2_maxh = (log2_approx(avgs)/2) + 1;
          pdsch_vars[eNB_id]->log2_maxh++;
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        }
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      }
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    }
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    else if (beamforming_mode==7)
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       dlsch_channel_level_TM7(pdsch_vars[eNB_id]->dl_bf_ch_estimates_ext,
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                              frame_parms,
                              avg,
                              symbol,
                              nb_rb);
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#ifdef UE_DEBUG_TRACE
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    LOG_D(PHY,"[DLSCH] AbsSubframe %d.%d log2_maxh = %d [log2_maxh0 %d log2_maxh1 %d] (%d,%d)\n",
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            frame%1024,subframe, pdsch_vars[eNB_id]->log2_maxh,
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                                                 pdsch_vars[eNB_id]->log2_maxh0,
                                                 pdsch_vars[eNB_id]->log2_maxh1,
                                                 avg[0],avgs);
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    //LOG_D(PHY,"[DLSCH] mimo_mode = %d\n", dlsch0_harq->mimo_mode);
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#endif
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    //wait until pdcch is decoded
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    //proc->channel_level = 1;
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  }
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  /*
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  uint32_t wait = 0;
  while(proc->channel_level == 0)
  {
      usleep(1);
      wait++;
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  }
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  */
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#if T_TRACER
    if (type == PDSCH)
    {
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      T(T_UE_PHY_PDSCH_ENERGY, T_INT(eNB_id), T_INT(frame%1024), T_INT(subframe),
                               T_INT(avg[0]), T_INT(avg[1]),     T_INT(avg[2]),   T_INT(avg[3]));
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    }
#endif
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#if UE_TIMING_TRACE
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    stop_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
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#if DISABLE_LOG_X
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    printf("[AbsSFN %d.%d] Slot%d Symbol %d first_symbol_flag %d: Channel Level %5.2f \n",frame,subframe,slot,symbol,first_symbol_flag,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
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#else
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    LOG_I(PHY, "[AbsSFN %d.%d] Slot%d Symbol %d first_symbol_flag %d: Channel Level  %5.2f \n",frame,subframe,slot,symbol,first_symbol_flag,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
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#endif
#endif


#if UE_TIMING_TRACE
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    start_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
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#endif
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// Now channel compensation
  if (dlsch0_harq->mimo_mode<LARGE_CDD) {
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    dlsch_channel_compensation(pdsch_vars[eNB_id]->rxdataF_ext,
                               pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                               pdsch_vars[eNB_id]->dl_ch_mag0,
                               pdsch_vars[eNB_id]->dl_ch_magb0,
                               pdsch_vars[eNB_id]->rxdataF_comp0,
                               (aatx>1) ? pdsch_vars[eNB_id]->rho : NULL,
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                               frame_parms,
                               symbol,
                               first_symbol_flag,
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                               dlsch0_harq->Qm,
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                               nb_rb,
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                               pdsch_vars[eNB_id]->log2_maxh,
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                               measurements); // log2_maxh+I0_shift
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    if (symbol == 5) {
     LOG_M("rxF_comp_d.m","rxF_c_d",&pdsch_vars[eNB_id]->rxdataF_comp0[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
    }
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    if ((rx_type==rx_IC_single_stream) &&
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        (eNB_id_i<ue->n_connected_eNB)) {
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         dlsch_channel_compensation(pdsch_vars[eNB_id_i]->rxdataF_ext,
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                                 pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
                                 pdsch_vars[eNB_id_i]->dl_ch_mag0,
                                 pdsch_vars[eNB_id_i]->dl_ch_magb0,
                                 pdsch_vars[eNB_id_i]->rxdataF_comp0,
                                 (aatx>1) ? pdsch_vars[eNB_id_i]->rho : NULL,
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                                 frame_parms,
                                 symbol,
                                 first_symbol_flag,
                                 i_mod,
                                 nb_rb,
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                                 pdsch_vars[eNB_id]->log2_maxh,
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                                 measurements); // log2_maxh+I0_shift
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      if (symbol == 5) {
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        LOG_M("rxF_comp_d.m","rxF_c_d",&pdsch_vars[eNB_id]->rxdataF_comp0[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
        LOG_M("rxF_comp_i.m","rxF_c_i",&pdsch_vars[eNB_id_i]->rxdataF_comp0[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
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      }
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      dlsch_dual_stream_correlation(frame_parms,
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                                    symbol,
                                    nb_rb,
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                                    pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                    pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
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                                    pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
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                                    pdsch_vars[eNB_id]->log2_maxh);
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    }
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  } else if ((dlsch0_harq->mimo_mode == LARGE_CDD) || ((dlsch0_harq->mimo_mode >=DUALSTREAM_UNIFORM_PRECODING1) &&
            (dlsch0_harq->mimo_mode <=DUALSTREAM_PUSCH_PRECODING))){
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      dlsch_channel_compensation_TM34(frame_parms,
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                                     pdsch_vars[eNB_id],
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                                     measurements,
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                                     eNB_id,
                                     symbol,
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                                     dlsch0_harq->Qm,
                                     dlsch1_harq->Qm,
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                                     harq_pid,
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                                     dlsch0_harq->round,
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                                     dlsch0_harq->mimo_mode,
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                                     nb_rb,
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                                     pdsch_vars[eNB_id]->log2_maxh0,
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                                     pdsch_vars[eNB_id]->log2_maxh1);
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      if (symbol == 5) {
	LOG_M("rxF_comp_d00.m","rxF_c_d00",&pdsch_vars[eNB_id]->rxdataF_comp0[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);// should be QAM
	LOG_M("rxF_comp_d01.m","rxF_c_d01",&pdsch_vars[eNB_id]->rxdataF_comp0[1][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be almost 0
	LOG_M("rxF_comp_d10.m","rxF_c_d10",&pdsch_vars[eNB_id]->rxdataF_comp1[harq_pid][round][0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be almost 0
	LOG_M("rxF_comp_d11.m","rxF_c_d11",&pdsch_vars[eNB_id]->rxdataF_comp1[harq_pid][round][1][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be QAM
      }
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      // compute correlation between signal and interference channels (rho12 and rho21)
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      dlsch_dual_stream_correlation(frame_parms, // this is doing h11'*h12 and h21'*h22
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                                    symbol,
                                    nb_rb,
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                                    pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                    &(pdsch_vars[eNB_id]->dl_ch_estimates_ext[2]),
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                                    pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                                    pdsch_vars[eNB_id]->log2_maxh0);
        //printf("rho stream1 =%d\n", &pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round] );
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      //to be optimized (just take complex conjugate)
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      dlsch_dual_stream_correlation(frame_parms, // this is doing h12'*h11 and h22'*h21
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                                    symbol,
                                    nb_rb,
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                                    &(pdsch_vars[eNB_id]->dl_ch_estimates_ext[2]),
                                    pdsch_vars[eNB_id]->dl_ch_estimates_ext,
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                                    pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                                    pdsch_vars[eNB_id]->log2_maxh1);
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    //  printf("rho stream2 =%d\n",&pdsch_vars[eNB_id]->dl_ch_rho2_ext );
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      //printf("TM3 log2_maxh : %d\n",pdsch_vars[eNB_id]->log2_maxh);
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      if (symbol == 5) {
	LOG_M("rho0_0.m","rho0_0",&pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round][0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);// should be QAM
	LOG_M("rho2_0.m","rho2_0",&pdsch_vars[eNB_id]->dl_ch_rho2_ext[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be almost 0
	LOG_M("rho0_1.m.m","rho0_1",&pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round][1][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be almost 0
	LOG_M("rho2_1.m","rho2_1",&pdsch_vars[eNB_id]->dl_ch_rho2_ext[1][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be QAM
      }
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    } else if (dlsch0_harq->mimo_mode<DUALSTREAM_UNIFORM_PRECODING1) {// single-layer precoding (TM5, TM6)
        if ((rx_type==rx_IC_single_stream) && (eNB_id_i==ue->n_connected_eNB) && (dlsch0_harq->dl_power_off==0)) {
          dlsch_channel_compensation_TM56(pdsch_vars[eNB_id]->rxdataF_ext,
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                                      pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                      pdsch_vars[eNB_id]->dl_ch_mag0,
                                      pdsch_vars[eNB_id]->dl_ch_magb0,
                                      pdsch_vars[eNB_id]->rxdataF_comp0,
                                      pdsch_vars[eNB_id]->pmi_ext,
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                                      frame_parms,
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                                      measurements,
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                                      eNB_id,
                                      symbol,
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                                      dlsch0_harq->Qm,
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                                      nb_rb,
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                                      pdsch_vars[eNB_id]->log2_maxh,
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                                      dlsch0_harq->dl_power_off);
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        for (rb=0; rb<nb_rb; rb++) {
          switch(pdsch_vars[eNB_id]->pmi_ext[rb]) {
          case 0:
            pdsch_vars[eNB_id_i]->pmi_ext[rb]=1;
            break;
         case 1:
            pdsch_vars[eNB_id_i]->pmi_ext[rb]=0;
            break;
         case 2:
            pdsch_vars[eNB_id_i]->pmi_ext[rb]=3;
            break;
          case 3:
            pdsch_vars[eNB_id_i]->pmi_ext[rb]=2;
            break;
          }
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       //  if (rb==0)
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        //    printf("pmi %d, pmi_i %d\n",pdsch_vars[eNB_id]->pmi_ext[rb],pdsch_vars[eNB_id_i]->pmi_ext[rb]);
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      }
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      dlsch_channel_compensation_TM56(pdsch_vars[eNB_id_i]->rxdataF_ext,
                                      pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
                                      pdsch_vars[eNB_id_i]->dl_ch_mag0,
                                      pdsch_vars[eNB_id_i]->dl_ch_magb0,
                                      pdsch_vars[eNB_id_i]->rxdataF_comp0,
                                      pdsch_vars[eNB_id_i]->pmi_ext,
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                                      frame_parms,
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                                      measurements,
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                                      eNB_id_i,
                                      symbol,
                                      i_mod,
                                      nb_rb,
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                                      pdsch_vars[eNB_id]->log2_maxh,
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                                      dlsch0_harq->dl_power_off);
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      if (symbol==5) {
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        LOG_M("rxF_comp_d.m","rxF_c_d",&pdsch_vars[eNB_id]->rxdataF_comp0[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
	LOG_M("rxF_comp_i.m","rxF_c_i",&pdsch_vars[eNB_id_i]->rxdataF_comp0[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
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      }
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      dlsch_dual_stream_correlation(frame_parms,
                                    symbol,
                                    nb_rb,
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                                    pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                    pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
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                                    pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
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                                    pdsch_vars[eNB_id]->log2_maxh);
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    }  else if (dlsch0_harq->dl_power_off==1)  {
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      dlsch_channel_compensation_TM56(pdsch_vars[eNB_id]->rxdataF_ext,
                                      pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                      pdsch_vars[eNB_id]->dl_ch_mag0,
                                      pdsch_vars[eNB_id]->dl_ch_magb0,
                                      pdsch_vars[eNB_id]->rxdataF_comp0,
                                      pdsch_vars[eNB_id]->pmi_ext,
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                                      frame_parms,
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                                      measurements,
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                                      eNB_id,
                                      symbol,
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                                      dlsch0_harq->Qm,
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                                      nb_rb,
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                                      pdsch_vars[eNB_id]->log2_maxh,
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                                      1);
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      }


    } else if (dlsch0_harq->mimo_mode==TM7) { //TM7

      dlsch_channel_compensation(pdsch_vars[eNB_id]->rxdataF_ext,
                                 pdsch_vars[eNB_id]->dl_bf_ch_estimates_ext,
                                 pdsch_vars[eNB_id]->dl_ch_mag0,
                                 pdsch_vars[eNB_id]->dl_ch_magb0,
                                 pdsch_vars[eNB_id]->rxdataF_comp0,
                                 (aatx>1) ? pdsch_vars[eNB_id]->rho : NULL,
                                 frame_parms,
                                 symbol,
                                 first_symbol_flag,
                                 get_Qm(dlsch0_harq->mcs),
                                 nb_rb,
                                 //9,
                                 pdsch_vars[eNB_id]->log2_maxh,
                                 measurements); // log2_maxh+I0_shift
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  }

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#if UE_TIMING_TRACE
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    stop_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
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#if DISABLE_LOG_X
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    printf("[AbsSFN %d.%d] Slot%d Symbol %d log2_maxh %d channel_level %d: Channel Comp %5.2f \n",frame,subframe,slot,symbol,pdsch_vars[eNB_id]->log2_maxh,proc->channel_level,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
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#else
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    LOG_I(PHY, "[AbsSFN %d.%d] Slot%d Symbol %d log2_maxh %d channel_level %d: Channel Comp  %5.2f \n",frame,subframe,slot,symbol,pdsch_vars[eNB_id]->log2_maxh,proc->channel_level,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
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#endif
#endif
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// MRC
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#if UE_TIMING_TRACE
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    start_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
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#endif
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   if (frame_parms->nb_antennas_rx > 1) {
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    if ((dlsch0_harq->mimo_mode == LARGE_CDD) ||
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        ((dlsch0_harq->mimo_mode >=DUALSTREAM_UNIFORM_PRECODING1) &&
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         (dlsch0_harq->mimo_mode <=DUALSTREAM_PUSCH_PRECODING))){  // TM3 or TM4
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      if (frame_parms->nb_antenna_ports_eNB == 2) {
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        dlsch_detection_mrc_TM34(frame_parms,
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                                 pdsch_vars[eNB_id],
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                                 harq_pid,
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                                 dlsch0_harq->round,
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                                 symbol,
                                 nb_rb,
                                 1);
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	if (symbol == 5) {
	  LOG_M("rho0_mrc.m","rho0_0",&pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round][0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);// should be QAM
	  LOG_M("rho2_mrc.m","rho2_0",&pdsch_vars[eNB_id]->dl_ch_rho2_ext[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be almost 0
        }
770
      }
771
    } else {
772
      dlsch_detection_mrc(frame_parms,
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                          pdsch_vars[eNB_id]->rxdataF_comp0,
                          pdsch_vars[eNB_id_i]->rxdataF_comp0,
                          pdsch_vars[eNB_id]->rho,
776
                          pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
777 778 779 780
                          pdsch_vars[eNB_id]->dl_ch_mag0,
                          pdsch_vars[eNB_id]->dl_ch_magb0,
                          pdsch_vars[eNB_id_i]->dl_ch_mag0,
                          pdsch_vars[eNB_id_i]->dl_ch_magb0,
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                          symbol,
                          nb_rb,
783
                          rx_type==rx_IC_single_stream);
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    }
  }
  //  printf("Combining");
  if ((dlsch0_harq->mimo_mode == SISO) ||
      ((dlsch0_harq->mimo_mode >= UNIFORM_PRECODING11) &&
789 790
       (dlsch0_harq->mimo_mode <= PUSCH_PRECODING0)) ||
       (dlsch0_harq->mimo_mode == TM7)) {
791 792
    /*
      dlsch_siso(frame_parms,
793 794
      pdsch_vars[eNB_id]->rxdataF_comp,
      pdsch_vars[eNB_id_i]->rxdataF_comp,
795 796 797 798 799
      symbol,
      nb_rb);
    */
  } else if (dlsch0_harq->mimo_mode == ALAMOUTI) {
    dlsch_alamouti(frame_parms,
800 801 802
                   pdsch_vars[eNB_id]->rxdataF_comp0,
                   pdsch_vars[eNB_id]->dl_ch_mag0,
                   pdsch_vars[eNB_id]->dl_ch_magb0,
803 804
                   symbol,
                   nb_rb);
805
  }
806

807
  //    printf("LLR");
808 809
  if ((dlsch0_harq->mimo_mode == LARGE_CDD) ||
      ((dlsch0_harq->mimo_mode >=DUALSTREAM_UNIFORM_PRECODING1) &&
810
       (dlsch0_harq->mimo_mode <=DUALSTREAM_PUSCH_PRECODING)))  {
811
    rxdataF_comp_ptr = pdsch_vars[eNB_id]->rxdataF_comp1[harq_pid][round];
812
    dl_ch_mag_ptr = pdsch_vars[eNB_id]->dl_ch_mag1[harq_pid][round];
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  }
  else {
815 816
    rxdataF_comp_ptr = pdsch_vars[eNB_id_i]->rxdataF_comp0;
    dl_ch_mag_ptr = pdsch_vars[eNB_id_i]->dl_ch_mag0;
817
    //i_mod should have been passed as a parameter
818
  }
819

820
#if UE_TIMING_TRACE
821
    stop_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
822
#if DISABLE_LOG_X
823
    printf("[AbsSFN %d.%d] Slot%d Symbol %d: Channel Combine %5.2f \n",frame,subframe,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
824
#else
825
    LOG_I(PHY, "[AbsSFN %d.%d] Slot%d Symbol %d: Channel Combine  %5.2f \n",frame,subframe,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
826 827 828 829
#endif
#endif

#if UE_TIMING_TRACE
830
    start_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
831
#endif
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  //printf("LLR dlsch0_harq->Qm %d rx_type %d cw0 %d cw1 %d symbol %d \n",dlsch0_harq->Qm,rx_type,codeword_TB0,codeword_TB1,symbol);
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  // compute LLRs
  // -> // compute @pointer where llrs should filled for this ofdm-symbol
  int8_t  *pllr_symbol_cw0;
  int8_t  *pllr_symbol_cw1;
  uint32_t llr_offset_symbol;
  llr_offset_symbol = pdsch_vars[eNB_id]->llr_offset[symbol];
  pllr_symbol_cw0  = (int8_t*)pdsch_vars[eNB_id]->llr[0];
  pllr_symbol_cw1  = (int8_t*)pdsch_vars[eNB_id]->llr[1];
  pllr_symbol_cw0 += llr_offset_symbol;
  pllr_symbol_cw1 += llr_offset_symbol;
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  /*
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  LOG_I(PHY,"compute LLRs [AbsSubframe %d.%d-%d] NbRB %d Qm %d LLRs-Length %d LLR-Offset %d @LLR Buff %p @LLR Buff(symb) %p\n",
845
             frame, subframe,symbol,
846 847 848 849
             nb_rb,dlsch0_harq->Qm,
             pdsch_vars[eNB_id]->llr_length[symbol],
             pdsch_vars[eNB_id]->llr_offset[symbol],
             (int16_t*)pdsch_vars[eNB_id]->llr[0],
850
             pllr_symbol_cw0);
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851
  */
852
  switch (dlsch0_harq->Qm) {
853
  case 2 :
854
    if ((rx_type==rx_standard) || (codeword_TB1 == -1)) {
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857
        dlsch_qpsk_llr(frame_parms,
858
                       pdsch_vars[eNB_id]->rxdataF_comp0,
859
                       (int16_t*)pllr_symbol_cw0,
860 861 862
                       symbol,
                       first_symbol_flag,
                       nb_rb,
863
                       adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
864
                       beamforming_mode);
865 866 867 868 869

    } else if (codeword_TB0 == -1){

        dlsch_qpsk_llr(frame_parms,
                       pdsch_vars[eNB_id]->rxdataF_comp0,
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                       (int16_t*)pllr_symbol_cw1,
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                       symbol,
                       first_symbol_flag,
                       nb_rb,
874
                       adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
875
                       beamforming_mode);
876
    }
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      else if (rx_type >= rx_IC_single_stream) {
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        if (dlsch1_harq->Qm == 2) {
879
          dlsch_qpsk_qpsk_llr(frame_parms,
880
                              pdsch_vars[eNB_id]->rxdataF_comp0,
881
                              rxdataF_comp_ptr,
882 883
                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                              pdsch_vars[eNB_id]->llr[0],
884
                              symbol,first_symbol_flag,nb_rb,
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                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
886
                              pdsch_vars[eNB_id]->llr128);
887 888 889
          if (rx_type==rx_IC_dual_stream) {
            dlsch_qpsk_qpsk_llr(frame_parms,
                                rxdataF_comp_ptr,
890 891 892
                                pdsch_vars[eNB_id]->rxdataF_comp0,
                                pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                                pdsch_vars[eNB_id]->llr[1],
893
                                symbol,first_symbol_flag,nb_rb,
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                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,2,subframe,symbol),
895
                                pdsch_vars[eNB_id]->llr128_2ndstream);
896 897
          }
        }
898
        else if (dlsch1_harq->Qm == 4) {
899
          dlsch_qpsk_16qam_llr(frame_parms,
900
                               pdsch_vars[eNB_id]->rxdataF_comp0,
901 902
                               rxdataF_comp_ptr,//i
                               dl_ch_mag_ptr,//i
903 904
                               pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                               pdsch_vars[eNB_id]->llr[0],
905
                               symbol,first_symbol_flag,nb_rb,
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                               adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
907
                               pdsch_vars[eNB_id]->llr128);
908 909 910
          if (rx_type==rx_IC_dual_stream) {
            dlsch_16qam_qpsk_llr(frame_parms,
                                 rxdataF_comp_ptr,
911
                                 pdsch_vars[eNB_id]->rxdataF_comp0,//i
912
                                 dl_ch_mag_ptr,
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                                 pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                                 pdsch_vars[eNB_id]->llr[1],
915
                                 symbol,first_symbol_flag,nb_rb,
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                                 adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,4,subframe,symbol),
917
                                 pdsch_vars[eNB_id]->llr128_2ndstream);
918 919 920 921
          }
        }
        else {
          dlsch_qpsk_64qam_llr(frame_parms,
922
                               pdsch_vars[eNB_id]->rxdataF_comp0,
923 924
                               rxdataF_comp_ptr,//i
                               dl_ch_mag_ptr,//i
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                               pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                               pdsch_vars[eNB_id]->llr[0],
927
                               symbol,first_symbol_flag,nb_rb,
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                               adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
929
                               pdsch_vars[eNB_id]->llr128);
930 931 932
          if (rx_type==rx_IC_dual_stream) {
            dlsch_64qam_qpsk_llr(frame_parms,
                                 rxdataF_comp_ptr,
933
                                 pdsch_vars[eNB_id]->rxdataF_comp0,//i
934
                                 dl_ch_mag_ptr,
935 936
                                 pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                                 pdsch_vars[eNB_id]->llr[1],
937
                                 symbol,first_symbol_flag,nb_rb,
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                                 adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,6,subframe,symbol),
939
                                 pdsch_vars[eNB_id]->llr128_2ndstream);
940
          }
941
        }
942
      }
943 944
    break;
  case 4 :
945
    if ((rx_type==rx_standard ) || (codeword_TB1 == -1)) {
946
      dlsch_16qam_llr(frame_parms,
947 948 949
                      pdsch_vars[eNB_id]->rxdataF_comp0,
                      pdsch_vars[eNB_id]->llr[0],
                      pdsch_vars[eNB_id]->dl_ch_mag0,
950
                      symbol,first_symbol_flag,nb_rb,
951
                      adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,4,subframe,symbol),
952 953
                      pdsch_vars[eNB_id]->llr128,
                      beamforming_mode);
954 955 956 957 958 959 960 961 962
    } else if (codeword_TB0 == -1){
      dlsch_16qam_llr(frame_parms,
                      pdsch_vars[eNB_id]->rxdataF_comp0,
                      pdsch_vars[eNB_id]->llr[1],
                      pdsch_vars[eNB_id]->dl_ch_mag0,
                      symbol,first_symbol_flag,nb_rb,
                      adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,4,subframe,symbol),
                      pdsch_vars[eNB_id]->llr128_2ndstream,
                      beamforming_mode);
963
    }
964
    else if (rx_type >= rx_IC_single_stream) {
965
      if (dlsch1_harq->Qm == 2) {
966
        dlsch_16qam_qpsk_llr(frame_parms,
967
                             pdsch_vars[eNB_id]->rxdataF_comp0,
968
                             rxdataF_comp_ptr,//i
969 970
                             pdsch_vars[eNB_id]->dl_ch_mag0,
                             pdsch_vars[eNB_id]->dl_ch_rho2_ext,
971
                             pdsch_vars[eNB_id]->llr[0],
972
                             symbol,first_symbol_flag,nb_rb,
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                             adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,4,subframe,symbol),
974
                             pdsch_vars[eNB_id]->llr128);
975 976 977
        if (rx_type==rx_IC_dual_stream) {
          dlsch_qpsk_16qam_llr(frame_parms,
                               rxdataF_comp_ptr,
978 979 980 981
                               pdsch_vars[eNB_id]->rxdataF_comp0,//i
                               pdsch_vars[eNB_id]->dl_ch_mag0,//i
                               pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                               pdsch_vars[eNB_id]->llr[1],
982
                               symbol,first_symbol_flag,nb_rb,
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                               adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,2,subframe,symbol),
984
                               pdsch_vars[eNB_id]->llr128_2ndstream);
985
        }
986
      }
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987
      else if (dlsch1_harq->Qm == 4) {
988
        dlsch_16qam_16qam_llr(frame_parms,
989
                              pdsch_vars[eNB_id]->rxdataF_comp0,
990
                              rxdataF_comp_ptr,//i
991
                              pdsch_vars[eNB_id]->dl_ch_mag0,
992
                              dl_ch_mag_ptr,//i
993 994
                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                              pdsch_vars[eNB_id]->llr[0],
995 996
                              symbol,first_symbol_flag,nb_rb,
                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,4,subframe,symbol),
997
                              pdsch_vars[eNB_id]->llr128);
998 999 1000
        if (rx_type==rx_IC_dual_stream) {
          dlsch_16qam_16qam_llr(frame_parms,
                                rxdataF_comp_ptr,
1001
                                pdsch_vars[eNB_id]->rxdataF_comp0,//i
1002
                                dl_ch_mag_ptr,
1003 1004 1005
                                pdsch_vars[eNB_id]->dl_ch_mag0,//i
                                pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                                pdsch_vars[eNB_id]->llr[1],
1006 1007
                                symbol,first_symbol_flag,nb_rb,
                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,4,subframe,symbol),
1008
                                pdsch_vars[eNB_id]->llr128_2ndstream);
1009
        }
1010 1011
      }
      else {
1012
        dlsch_16qam_64qam_llr(frame_parms,
1013
                              pdsch_vars[eNB_id]->rxdataF_comp0,
1014
                              rxdataF_comp_ptr,//i
1015
                              pdsch_vars[eNB_id]->dl_ch_mag0,
1016
                              dl_ch_mag_ptr,//i
1017 1018
                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                              pdsch_vars[eNB_id]->llr[0],
1019 1020
                              symbol,first_symbol_flag,nb_rb,
                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,4,subframe,symbol),
1021
                              pdsch_vars[eNB_id]->llr128);
1022 1023 1024
        if (rx_type==rx_IC_dual_stream) {
          dlsch_64qam_16qam_llr(frame_parms,
                                rxdataF_comp_ptr,
1025
                                pdsch_vars[eNB_id]->rxdataF_comp0,
1026
                                dl_ch_mag_ptr,
1027 1028 1029
                                pdsch_vars[eNB_id]->dl_ch_mag0,
                                pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                                pdsch_vars[eNB_id]->llr[1],
1030 1031
                                symbol,first_symbol_flag,nb_rb,
                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,6,subframe,symbol),
1032
                                pdsch_vars[eNB_id]->llr128_2ndstream);
1033
        }
1034 1035 1036 1037
      }
    }
    break;
  case 6 :
1038
    if ((rx_type==rx_standard) || (codeword_TB1 == -1))  {
1039
      dlsch_64qam_llr(frame_parms,
1040
                      pdsch_vars[eNB_id]->rxdataF_comp0,
1041
                      (int16_t*)pllr_symbol_cw0,
1042 1043
                      pdsch_vars[eNB_id]->dl_ch_mag0,
                      pdsch_vars[eNB_id]->dl_ch_magb0,
1044
                      symbol,first_symbol_flag,nb_rb,
1045
                      adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,6,subframe,symbol),
1046
                      pdsch_vars[eNB_id]->llr_offset[symbol],
1047
                      beamforming_mode);
1048 1049 1050
    } else if (codeword_TB0 == -1){
      dlsch_64qam_llr(frame_parms,
                      pdsch_vars[eNB_id]->rxdataF_comp0,
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1051
                      (int16_t*)pllr_symbol_cw1,
1052 1053 1054 1055
                      pdsch_vars[eNB_id]->dl_ch_mag0,
                      pdsch_vars[eNB_id]->dl_ch_magb0,
                      symbol,first_symbol_flag,nb_rb,
                      adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,6,subframe,symbol),
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1056
                      pdsch_vars[eNB_id]->llr_offset[symbol],
1057
                      beamforming_mode);
1058
    }
1059
    else if (rx_type >= rx_IC_single_stream) {
1060
      if (dlsch1_harq->Qm == 2) {
1061
        dlsch_64qam_qpsk_llr(frame_parms,
1062
                             pdsch_vars[eNB_id]->rxdataF_comp0,
1063
                             rxdataF_comp_ptr,//i
1064 1065
                             pdsch_vars[eNB_id]->dl_ch_mag0,
                             pdsch_vars[eNB_id]->dl_ch_rho2_ext,
1066
                             pdsch_vars[eNB_id]->llr[0],
1067
                             symbol,first_symbol_flag,nb_rb,
1068
                             adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,6,subframe,symbol),
1069
                             pdsch_vars[eNB_id]->llr128);
1070 1071 1072
        if (rx_type==rx_IC_dual_stream) {
          dlsch_qpsk_64qam_llr(frame_parms,
                               rxdataF_comp_ptr,
1073 1074 1075 1076
                               pdsch_vars[eNB_id]->rxdataF_comp0,//i
                               pdsch_vars[eNB_id]->dl_ch_mag0,
                               pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                               pdsch_vars[eNB_id]->llr[1],
1077 1078
                               symbol,first_symbol_flag,nb_rb,
                               adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,2,subframe,symbol),
1079
                               pdsch_vars[eNB_id]->llr128_2ndstream);
1080
        }
1081
      }
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1082
      else if (dlsch1_harq->Qm == 4) {
1083
        dlsch_64qam_16qam_llr(frame_parms,
1084
                              pdsch_vars[eNB_id]->rxdataF_comp0,
1085
                              rxdataF_comp_ptr,//i
1086
                              pdsch_vars[eNB_id]->dl_ch_mag0,
1087
                              dl_ch_mag_ptr,//i
1088 1089
                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                              pdsch_vars[eNB_id]->llr[0],
1090 1091
                              symbol,first_symbol_flag,nb_rb,
                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,6,subframe,symbol),
1092
                              pdsch_vars[eNB_id]->llr128);
1093 1094 1095
        if (rx_type==rx_IC_dual_stream) {
          dlsch_16qam_64qam_llr(frame_parms,
                                rxdataF_comp_ptr,
1096
                                pdsch_vars[eNB_id]->rxdataF_comp0,//i
1097
                                dl_ch_mag_ptr,
1098 1099 1100
                                pdsch_vars[eNB_id]->dl_ch_mag0,//i
                                pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                                pdsch_vars[eNB_id]->llr[1],
1101 1102
                                symbol,first_symbol_flag,nb_rb,
                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,4,subframe,symbol),
1103
                                pdsch_vars[eNB_id]->llr128_2ndstream);
1104
        }
1105
      }
1106
      else {
1107
        dlsch_64qam_64qam_llr(frame_parms,
1108
                              pdsch_vars[eNB_id]->rxdataF_comp0,
1109
                              rxdataF_comp_ptr,//i
1110
                              pdsch_vars[eNB_id]->dl_ch_mag0,
1111
                              dl_ch_mag_ptr,//i
1112
                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
1113
                              (int16_t*)pllr_symbol_cw0,
1114 1115
                              symbol,first_symbol_flag,nb_rb,
                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,6,subframe,symbol),
1116
                              pdsch_vars[eNB_id]->llr_offset[symbol]);
1117 1118 1119
        if (rx_type==rx_IC_dual_stream) {
          dlsch_64qam_64qam_llr(frame_parms,
                                rxdataF_comp_ptr,
1120
                                pdsch_vars[eNB_id]->rxdataF_comp0,//i
1121
                                dl_ch_mag_ptr,
1122 1123
                                pdsch_vars[eNB_id]->dl_ch_mag0,//i
                                pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
1124
                                (int16_t*)pllr_symbol_cw1,
1125 1126
                                symbol,first_symbol_flag,nb_rb,
                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,6,subframe,symbol),
1127
                                pdsch_vars[eNB_id]->llr_offset[symbol]);
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        }
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      }
    }
    break;
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  default:
    LOG_W(PHY,"rx_dlsch.c : Unknown mod_order!!!!\n");
    return(-1);
    break;
  }
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  if (dlsch1_harq) {
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  switch (get_Qm(dlsch1_harq->mcs)) {
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  case 2 :
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    if (rx_type==rx_standard) {
        dlsch_qpsk_llr(frame_parms,
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                       pdsch_vars[eNB_id]->rxdataF_comp0,
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                       (int16_t*)pllr_symbol_cw0,
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                       symbol,first_symbol_flag,nb_rb,
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                       adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
                       beamforming_mode);
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    }
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    break;
  case 4:
    if (rx_type==rx_standard) {
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      dlsch_16qam_llr(frame_parms,
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                      pdsch_vars[eNB_id]->rxdataF_comp0,
                      pdsch_vars[eNB_id]->llr[0],
                      pdsch_vars[eNB_id]->dl_ch_mag0,
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                      symbol,first_symbol_flag,nb_rb,
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                      adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,4,subframe,symbol),
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                      pdsch_vars[eNB_id]->llr128,
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                      beamforming_mode);
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    }
    break;
  case 6 :
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    if (rx_type==rx_standard) {
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      dlsch_64qam_llr(frame_parms,
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                      pdsch_vars[eNB_id]->rxdataF_comp0,
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                      (int16_t*)pllr_symbol_cw0,
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                      pdsch_vars[eNB_id]->dl_ch_mag0,
                      pdsch_vars[eNB_id]->dl_ch_magb0,
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                      symbol,first_symbol_flag,nb_rb,
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                      adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,6,subframe,symbol),
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                      pdsch_vars[eNB_id]->llr_offset[symbol],
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                      beamforming_mode);
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  }
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    break;
  default:
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    LOG_W(PHY,"rx_dlsch.c : Unknown mod_order!!!!\n");
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    return(-1);
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    break;
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  }
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  }

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#if UE_TIMING_TRACE
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    stop_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
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#if DISABLE_LOG_X
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    printf("[AbsSFN %d.%d] Slot%d Symbol %d: LLR Computation %5.2f \n",frame,subframe,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
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#else
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    LOG_D(PHY, "[AbsSFN %d.%d] Slot%d Symbol %d: LLR Computation  %5.2f \n",frame,subframe,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
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#endif
#endif
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    // Please keep it: useful for debugging
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#if 0
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  if( (symbol == 13) && (subframe==0) && (dlsch0_harq->Qm == 6) /*&& (nb_rb==25)*/)
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  {
      LOG_E(PHY,"Dump Phy Chan Est \n");
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      if(1)
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      {
#if 1
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      LOG_M("rxdataF0.m"    , "rxdataF0",             &common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF[0][0],14*frame_parms->ofdm_symbol_size,1,1);
      //LOG_M("rxdataF1.m"    , "rxdataF1",             &common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF[0][0],14*frame_parms->ofdm_symbol_size,1,1);
      LOG_M("dl_ch_estimates00.m", "dl_ch_estimates00",   &common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id][0][0],14*frame_parms->ofdm_symbol_size,1,1);
      //LOG_M("dl_ch_estimates01.m", "dl_ch_estimates01",   &common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id][1][0],14*frame_parms->ofdm_symbol_size,1,1);
      //LOG_M("dl_ch_estimates10.m", "dl_ch_estimates10",   &common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id][2][0],14*frame_parms->ofdm_symbol_size,1,1);
      //LOG_M("dl_ch_estimates11.m", "dl_ch_estimates11",   &common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id][3][0],14*frame_parms->ofdm_symbol_size,1,1);


      //LOG_M("rxdataF_ext00.m"    , "rxdataF_ext00",       &pdsch_vars[eNB_id]->rxdataF_ext[0][0],14*frame_parms->N_RB_DL*12,1,1);
      //LOG_M("rxdataF_ext01.m"    , "rxdataF_ext01",       &pdsch_vars[eNB_id]->rxdataF_ext[1][0],14*frame_parms->N_RB_DL*12,1,1);
      //LOG_M("rxdataF_ext10.m"    , "rxdataF_ext10",       &pdsch_vars[eNB_id]->rxdataF_ext[2][0],14*frame_parms->N_RB_DL*12,1,1);
      //LOG_M("rxdataF_ext11.m"    , "rxdataF_ext11",       &pdsch_vars[eNB_id]->rxdataF_ext[3][0],14*frame_parms->N_RB_DL*12,1,1);
      LOG_M("dl_ch_estimates_ext00.m", "dl_ch_estimates_ext00", &pdsch_vars[eNB_id]->dl_ch_estimates_ext[0][0],14*frame_parms->N_RB_DL*12,1,1);
      //LOG_M("dl_ch_estimates_ext01.m", "dl_ch_estimates_ext01", &pdsch_vars[eNB_id]->dl_ch_estimates_ext[1][0],14*frame_parms->N_RB_DL*12,1,1);
      //LOG_M("dl_ch_estimates_ext10.m", "dl_ch_estimates_ext10", &pdsch_vars[eNB_id]->dl_ch_estimates_ext[2][0],14*frame_parms->N_RB_DL*12,1,1);
      //LOG_M("dl_ch_estimates_ext11.m", "dl_ch_estimates_ext11", &pdsch_vars[eNB_id]->dl_ch_estimates_ext[3][0],14*frame_parms->N_RB_DL*12,1,1);
      LOG_M("rxdataF_comp00.m","rxdataF_comp00",              &pdsch_vars[eNB_id]->rxdataF_comp0[0][0],14*frame_parms->N_RB_DL*12,1,1);
      //LOG_M("rxdataF_comp01.m","rxdataF_comp01",              &pdsch_vars[eNB_id]->rxdataF_comp0[1][0],14*frame_parms->N_RB_DL*12,1,1);
      //LOG_M("rxdataF_comp10.m","rxdataF_comp10",              &pdsch_vars[eNB_id]->rxdataF_comp1[harq_pid][round][0][0],14*frame_parms->N_RB_DL*12,1,1);
      //LOG_M("rxdataF_comp11.m","rxdataF_comp11",              &pdsch_vars[eNB_id]->rxdataF_comp1[harq_pid][round][1][0],14*frame_parms->N_RB_DL*12,1,1);
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#endif
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      LOG_M("llr0.m","llr0",  &pdsch_vars[eNB_id]->llr[0][0],(14*nb_rb*12*dlsch1_harq->Qm) - 4*(nb_rb*4*dlsch1_harq->Qm),1,0);
      //LOG_M("llr1.m","llr1",  &pdsch_vars[eNB_id]->llr[1][0],(14*nb_rb*12*dlsch1_harq->Qm) - 4*(nb_rb*4*dlsch1_harq->Qm),1,0);
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      AssertFatal(0," ");
      }

  }
#endif
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  T(T_UE_PHY_PDSCH_IQ, T_INT(eNB_id), T_INT(frame%1024),
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    T_INT(subframe), T_INT(nb_rb),
    T_INT(frame_parms->N_RB_UL), T_INT(frame_parms->symbols_per_tti),
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    T_BUFFER(&pdsch_vars[eNB_id]->rxdataF_comp0[eNB_id][0],
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             2 * /* ulsch[UE_id]->harq_processes[harq_pid]->nb_rb */ frame_parms->N_RB_UL *12*frame_parms->symbols_per_tti*2));
1234

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  return 0;
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}

//==============================================================================================
// Pre-processing for LLR computation
//==============================================================================================

void dlsch_channel_compensation(int **rxdataF_ext,
                                int **dl_ch_estimates_ext,
                                int **dl_ch_mag,
                                int **dl_ch_magb,
                                int **rxdataF_comp,
                                int **rho,
                                LTE_DL_FRAME_PARMS *frame_parms,
                                unsigned char symbol,
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                                uint8_t first_symbol_flag,
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                                unsigned char mod_order,
                                unsigned short nb_rb,
                                unsigned char output_shift,
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                                PHY_MEASUREMENTS *measurements)
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{
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#if defined(__i386) || defined(__x86_64)
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  unsigned short rb;
  unsigned char aatx,aarx,symbol_mod,pilots=0;
  __m128i *dl_ch128,*dl_ch128_2,*dl_ch_mag128,*dl_ch_mag128b,*rxdataF128,*rxdataF_comp128,*rho128;
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  __m128i mmtmpD0,mmtmpD1,mmtmpD2,mmtmpD3,QAM_amp128,QAM_amp128b;
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  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
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    if (frame_parms->nb_antenna_ports_eNB==1) // 10 out of 12 so don't reduce size
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      nb_rb=1+(5*nb_rb/6);
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    else
      pilots=1;
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  }

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  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) {
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    if (mod_order == 4) {
      QAM_amp128 = _mm_set1_epi16(QAM16_n1);  // 2/sqrt(10)
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      QAM_amp128b = _mm_setzero_si128();
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    } else if (mod_order == 6) {
      QAM_amp128  = _mm_set1_epi16(QAM64_n1); //
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      QAM_amp128b = _mm_set1_epi16(QAM64_n2);
    }
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    //    printf("comp: rxdataF_comp %p, symbol %d\n",rxdataF_comp[0],symbol);

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    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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      dl_ch128          = (__m128i *)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128      = (__m128i *)&dl_ch_mag[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128b     = (__m128i *)&dl_ch_magb[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
      rxdataF128        = (__m128i *)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12];
      rxdataF_comp128   = (__m128i *)&rxdataF_comp[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];


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      for (rb=0; rb<nb_rb; rb++) {
        if (mod_order>2) {
          // get channel amplitude if not QPSK

          mmtmpD0 = _mm_madd_epi16(dl_ch128[0],dl_ch128[0]);
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);

          mmtmpD1 = _mm_madd_epi16(dl_ch128[1],dl_ch128[1]);
          mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);

          mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);

          // store channel magnitude here in a new field of dlsch

          dl_ch_mag128[0] = _mm_unpacklo_epi16(mmtmpD0,mmtmpD0);
          dl_ch_mag128b[0] = dl_ch_mag128[0];
          dl_ch_mag128[0] = _mm_mulhi_epi16(dl_ch_mag128[0],QAM_amp128);
          dl_ch_mag128[0] = _mm_slli_epi16(dl_ch_mag128[0],1);
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    //print_ints("Re(ch):",(int16_t*)&mmtmpD0);
    //print_shorts("QAM_amp:",(int16_t*)&QAM_amp128);
    //print_shorts("mag:",(int16_t*)&dl_ch_mag128[0]);
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          dl_ch_mag128[1] = _mm_unpackhi_epi16(mmtmpD0,mmtmpD0);
          dl_ch_mag128b[1] = dl_ch_mag128[1];
          dl_ch_mag128[1] = _mm_mulhi_epi16(dl_ch_mag128[1],QAM_amp128);
          dl_ch_mag128[1] = _mm_slli_epi16(dl_ch_mag128[1],1);

          if (pilots==0) {
            mmtmpD0 = _mm_madd_epi16(dl_ch128[2],dl_ch128[2]);
            mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
            mmtmpD1 = _mm_packs_epi32(mmtmpD0,mmtmpD0);

            dl_ch_mag128[2] = _mm_unpacklo_epi16(mmtmpD1,mmtmpD1);
            dl_ch_mag128b[2] = dl_ch_mag128[2];

            dl_ch_mag128[2] = _mm_mulhi_epi16(dl_ch_mag128[2],QAM_amp128);
            dl_ch_mag128[2] = _mm_slli_epi16(dl_ch_mag128[2],1);
          }

          dl_ch_mag128b[0] = _mm_mulhi_epi16(dl_ch_mag128b[0],QAM_amp128b);
          dl_ch_mag128b[0] = _mm_slli_epi16(dl_ch_mag128b[0],1);


          dl_ch_mag128b[1] = _mm_mulhi_epi16(dl_ch_mag128b[1],QAM_amp128b);
          dl_ch_mag128b[1] = _mm_slli_epi16(dl_ch_mag128b[1],1);

          if (pilots==0) {
            dl_ch_mag128b[2] = _mm_mulhi_epi16(dl_ch_mag128b[2],QAM_amp128b);
            dl_ch_mag128b[2] = _mm_slli_epi16(dl_ch_mag128b[2],1);
          }
        }

        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch128[0],rxdataF128[0]);
        //  print_ints("re",&mmtmpD0);

        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[0],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]);
        //  print_ints("im",&mmtmpD1);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[0]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
        //  print_ints("re(shift)",&mmtmpD0);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
        //  print_ints("im(shift)",&mmtmpD1);
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
        //        print_ints("c0",&mmtmpD2);
        //  print_ints("c1",&mmtmpD3);
        rxdataF_comp128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
        //  print_shorts("rx:",rxdataF128);
        //  print_shorts("ch:",dl_ch128);
        //  print_shorts("pack:",rxdataF_comp128);

        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch128[1],rxdataF128[1]);
        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[1],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[1]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);

        rxdataF_comp128[1] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
        //  print_shorts("rx:",rxdataF128+1);
        //  print_shorts("ch:",dl_ch128+1);
        //  print_shorts("pack:",rxdataF_comp128+1);

        if (pilots==0) {
          // multiply by conjugated channel
          mmtmpD0 = _mm_madd_epi16(dl_ch128[2],rxdataF128[2]);
          // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
          mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[2],_MM_SHUFFLE(2,3,0,1));
          mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
          mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
          mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[2]);
          // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
          mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
          mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
          mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);

          rxdataF_comp128[2] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
          //  print_shorts("rx:",rxdataF128+2);
          //  print_shorts("ch:",dl_ch128+2);
          //        print_shorts("pack:",rxdataF_comp128+2);

          dl_ch128+=3;
          dl_ch_mag128+=3;
          dl_ch_mag128b+=3;
          rxdataF128+=3;
          rxdataF_comp128+=3;
        } else { // we have a smaller PDSCH in symbols with pilots so skip last group of 4 REs and increment less
          dl_ch128+=2;
          dl_ch_mag128+=2;
          dl_ch_mag128b+=2;
          rxdataF128+=2;
          rxdataF_comp128+=2;
        }

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      }
    }
  }
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1423
  if (rho) {
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    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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      rho128        = (__m128i *)&rho[aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch128      = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch128_2    = (__m128i *)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
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      for (rb=0; rb<nb_rb; rb++) {
        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch128[0],dl_ch128_2[0]);
        //  print_ints("re",&mmtmpD0);

        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[0],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]);
        //  print_ints("im",&mmtmpD1);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,dl_ch128_2[0]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
        //  print_ints("re(shift)",&mmtmpD0);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
        //  print_ints("im(shift)",&mmtmpD1);
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
        //        print_ints("c0",&mmtmpD2);
        //  print_ints("c1",&mmtmpD3);
        rho128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);

        //print_shorts("rx:",dl_ch128_2);
        //print_shorts("ch:",dl_ch128);
        //print_shorts("pack:",rho128);

        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch128[1],dl_ch128_2[1]);
        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[1],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,dl_ch128_2[1]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);


        rho128[1] =_mm_packs_epi32(mmtmpD2,mmtmpD3);
        //print_shorts("rx:",dl_ch128_2+1);
        //print_shorts("ch:",dl_ch128+1);
        //print_shorts("pack:",rho128+1);
        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch128[2],dl_ch128_2[2]);
        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[2],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,dl_ch128_2[2]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);

        rho128[2] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
        //print_shorts("rx:",dl_ch128_2+2);
        //print_shorts("ch:",dl_ch128+2);
        //print_shorts("pack:",rho128+2);

        dl_ch128+=3;
        dl_ch128_2+=3;
        rho128+=3;

      }

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      if (first_symbol_flag==1) {
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        measurements->rx_correlation[0][aarx] = signal_energy(&rho[aarx][symbol*frame_parms->N_RB_DL*12],rb*12);
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      }
    }
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  }

  _mm_empty();
  _m_empty();
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#elif defined(__arm__)


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  unsigned short rb;
  unsigned char aatx,aarx,symbol_mod,pilots=0;
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  int16x4_t *dl_ch128,*dl_ch128_2,*rxdataF128;
  int32x4_t mmtmpD0,mmtmpD1,mmtmpD0b,mmtmpD1b;
  int16x8_t *dl_ch_mag128,*dl_ch_mag128b,mmtmpD2,mmtmpD3,mmtmpD4;
  int16x8_t QAM_amp128,QAM_amp128b;
  int16x4x2_t *rxdataF_comp128,*rho128;
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  int16_t conj[4]__attribute__((aligned(16))) = {1,-1,1,-1};
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  int32x4_t output_shift128 = vmovq_n_s32(-(int32_t)output_shift);
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  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
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  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
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    if (frame_parms->nb_antenna_ports_eNB==1) { // 10 out of 12 so don't reduce size
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      nb_rb=1+(5*nb_rb/6);
    }
    else {
      pilots=1;
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    }
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  }
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  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) {
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    if (mod_order == 4) {
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      QAM_amp128  = vmovq_n_s16(QAM16_n1);  // 2/sqrt(10)
      QAM_amp128b = vmovq_n_s16(0);
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    } else if (mod_order == 6) {
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      QAM_amp128  = vmovq_n_s16(QAM64_n1); //
      QAM_amp128b = vmovq_n_s16(QAM64_n2);
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    }
    //    printf("comp: rxdataF_comp %p, symbol %d\n",rxdataF_comp[0],symbol);

    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      dl_ch128          = (int16x4_t*)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128      = (int16x8_t*)&dl_ch_mag[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128b     = (int16x8_t*)&dl_ch_magb[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
      rxdataF128        = (int16x4_t*)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12];
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      rxdataF_comp128   = (int16x4x2_t*)&rxdataF_comp[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
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      for (rb=0; rb<nb_rb; rb++) {
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  if (mod_order>2) {
    // get channel amplitude if not QPSK
    mmtmpD0 = vmull_s16(dl_ch128[0], dl_ch128[0]);
    // mmtmpD0 = [ch0*ch0,ch1*ch1,ch2*ch2,ch3*ch3];
    mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
    // mmtmpD0 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3]>>output_shift128 on 32-bits
    mmtmpD1 = vmull_s16(dl_ch128[1], dl_ch128[1]);
    mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
    mmtmpD2 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
    // mmtmpD2 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3,ch4*ch4 + ch5*ch5,ch4*ch4 + ch5*ch5,ch6*ch6 + ch7*ch7,ch6*ch6 + ch7*ch7]>>output_shift128 on 16-bits
    mmtmpD0 = vmull_s16(dl_ch128[2], dl_ch128[2]);
    mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
    mmtmpD1 = vmull_s16(dl_ch128[3], dl_ch128[3]);
    mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
    mmtmpD3 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
    if (pilots==0) {
      mmtmpD0 = vmull_s16(dl_ch128[4], dl_ch128[4]);
      mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
      mmtmpD1 = vmull_s16(dl_ch128[5], dl_ch128[5]);
      mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
      mmtmpD4 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
    }
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    dl_ch_mag128b[0] = vqdmulhq_s16(mmtmpD2,QAM_amp128b);
    dl_ch_mag128b[1] = vqdmulhq_s16(mmtmpD3,QAM_amp128b);
    dl_ch_mag128[0] = vqdmulhq_s16(mmtmpD2,QAM_amp128);
    dl_ch_mag128[1] = vqdmulhq_s16(mmtmpD3,QAM_amp128);

    if (pilots==0) {
      dl_ch_mag128b[2] = vqdmulhq_s16(mmtmpD4,QAM_amp128b);
      dl_ch_mag128[2]  = vqdmulhq_s16(mmtmpD4,QAM_amp128);
    }
  }

  mmtmpD0 = vmull_s16(dl_ch128[0], rxdataF128[0]);
  //mmtmpD0 = [Re(ch[0])Re(rx[0]) Im(ch[0])Im(ch[0]) Re(ch[1])Re(rx[1]) Im(ch[1])Im(ch[1])]
  mmtmpD1 = vmull_s16(dl_ch128[1], rxdataF128[1]);
  //mmtmpD1 = [Re(ch[2])Re(rx[2]) Im(ch[2])Im(ch[2]) Re(ch[3])Re(rx[3]) Im(ch[3])Im(ch[3])]
  mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
  //mmtmpD0 = [Re(ch[0])Re(rx[0])+Im(ch[0])Im(ch[0]) Re(ch[1])Re(rx[1])+Im(ch[1])Im(ch[1]) Re(ch[2])Re(rx[2])+Im(ch[2])Im(ch[2]) Re(ch[3])Re(rx[3])+Im(ch[3])Im(ch[3])]

  mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[0],*(int16x4_t*)conj)), rxdataF128[0]);
  //mmtmpD0 = [-Im(ch[0])Re(rx[0]) Re(ch[0])Im(rx[0]) -Im(ch[1])Re(rx[1]) Re(ch[1])Im(rx[1])]
  mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[1],*(int16x4_t*)conj)), rxdataF128[1]);
  //mmtmpD0 = [-Im(ch[2])Re(rx[2]) Re(ch[2])Im(rx[2]) -Im(ch[3])Re(rx[3]) Re(ch[3])Im(rx[3])]
  mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
  //mmtmpD1 = [-Im(ch[0])Re(rx[0])+Re(ch[0])Im(rx[0]) -Im(ch[1])Re(rx[1])+Re(ch[1])Im(rx[1]) -Im(ch[2])Re(rx[2])+Re(ch[2])Im(rx[2]) -Im(ch[3])Re(rx[3])+Re(ch[3])Im(rx[3])]

  mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
  mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
  rxdataF_comp128[0] = vzip_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
  mmtmpD0 = vmull_s16(dl_ch128[2], rxdataF128[2]);
  mmtmpD1 = vmull_s16(dl_ch128[3], rxdataF128[3]);
  mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
  mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[2],*(int16x4_t*)conj)), rxdataF128[2]);
  mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[3],*(int16x4_t*)conj)), rxdataF128[3]);
  mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
  mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
  mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
  rxdataF_comp128[1] = vzip_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));

  if (pilots==0) {
    mmtmpD0 = vmull_s16(dl_ch128[4], rxdataF128[4]);
    mmtmpD1 = vmull_s16(dl_ch128[5], rxdataF128[5]);
    mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
         vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));

    mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[4],*(int16x4_t*)conj)), rxdataF128[4]);
    mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[5],*(int16x4_t*)conj)), rxdataF128[5]);
    mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
         vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));


    mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
    mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
    rxdataF_comp128[2] = vzip_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));


    dl_ch128+=6;
    dl_ch_mag128+=3;
    dl_ch_mag128b+=3;
    rxdataF128+=6;
    rxdataF_comp128+=3;

  } else { // we have a smaller PDSCH in symbols with pilots so skip last group of 4 REs and increment less
    dl_ch128+=4;
    dl_ch_mag128+=2;
    dl_ch_mag128b+=2;
    rxdataF128+=4;
    rxdataF_comp128+=2;
  }
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      }
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    }
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  }
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  if (rho) {
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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      rho128        = (int16x4x2_t*)&rho[aarx][symbol*frame_parms->N_RB_DL*12];
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      dl_ch128      = (int16x4_t*)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch128_2    = (int16x4_t*)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
      for (rb=0; rb<nb_rb; rb++) {
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  mmtmpD0 = vmull_s16(dl_ch128[0], dl_ch128_2[0]);
  mmtmpD1 = vmull_s16(dl_ch128[1], dl_ch128_2[1]);
  mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
  mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[0],*(int16x4_t*)conj)), dl_ch128_2[0]);
  mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[1],*(int16x4_t*)conj)), dl_ch128_2[1]);
  mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));

  mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
  mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
  rho128[0] = vzip_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));

  mmtmpD0 = vmull_s16(dl_ch128[2], dl_ch128_2[2]);
  mmtmpD1 = vmull_s16(dl_ch128[3], dl_ch128_2[3]);
  mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
  mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[2],*(int16x4_t*)conj)), dl_ch128_2[2]);
  mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[3],*(int16x4_t*)conj)), dl_ch128_2[3]);
  mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));

  mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
  mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
  rho128[1] = vzip_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));

  mmtmpD0 = vmull_s16(dl_ch128[0], dl_ch128_2[0]);
  mmtmpD1 = vmull_s16(dl_ch128[1], dl_ch128_2[1]);
  mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
  mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[4],*(int16x4_t*)conj)), dl_ch128_2[4]);
  mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[5],*(int16x4_t*)conj)), dl_ch128_2[5]);
  mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));

  mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
  mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
  rho128[2] = vzip_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));


  dl_ch128+=6;
  dl_ch128_2+=6;
  rho128+=3;
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      }
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      if (first_symbol_flag==1) {
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  measurements->rx_correlation[0][aarx] = signal_energy(&rho[aarx][symbol*frame_parms->N_RB_DL*12],rb*12);
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      }
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    }
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  }
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#endif
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}

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void dlsch_channel_compensation_core(int **rxdataF_ext,
                                     int **dl_ch_estimates_ext,
                                     int **dl_ch_mag,
                                     int **dl_ch_magb,
                                     int **rxdataF_comp,
                                     int **rho,
                                     unsigned char n_tx,
                                     unsigned char n_rx,
                                     unsigned char mod_order,
                                     unsigned char output_shift,
                                     int length,
                                     int start_point)

{

  unsigned short ii;
  int length_mod8 = 0;
  int length2;
  __m128i *dl_ch128,*dl_ch_mag128,*dl_ch_mag128b, *dl_ch128_2, *rxdataF128,*rxdataF_comp128,*rho128;
  __m128i mmtmpD0,mmtmpD1,mmtmpD2,mmtmpD3,QAM_amp128,QAM_amp128b;
  int aatx = 0, aarx = 0;

  for (aatx=0; aatx<n_tx; aatx++) {

    if (mod_order == 4) {
      QAM_amp128 = _mm_set1_epi16(QAM16_n1);  // 2/sqrt(10)
      QAM_amp128b = _mm_setzero_si128();
    } else if (mod_order == 6) {
      QAM_amp128  = _mm_set1_epi16(QAM64_n1); //
      QAM_amp128b = _mm_set1_epi16(QAM64_n2);
    }

    for (aarx=0; aarx<n_rx; aarx++) {

    dl_ch128          = (__m128i *)&dl_ch_estimates_ext[aatx*n_rx + aarx][start_point];
    dl_ch_mag128      = (__m128i *)&dl_ch_mag[aatx*n_rx + aarx][start_point];
    dl_ch_mag128b     = (__m128i *)&dl_ch_magb[aatx*n_rx + aarx][start_point];
    rxdataF128        = (__m128i *)&rxdataF_ext[aarx][start_point];
    rxdataF_comp128   = (__m128i *)&rxdataF_comp[aatx*n_rx + aarx][start_point];

      length_mod8 = length&7;
      if (length_mod8 == 0){
        length2 = length>>3;

        for (ii=0; ii<length2; ++ii) {
          if (mod_order>2) {
            // get channel amplitude if not QPSK

            mmtmpD0 = _mm_madd_epi16(dl_ch128[0],dl_ch128[0]);
            mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);

            mmtmpD1 = _mm_madd_epi16(dl_ch128[1],dl_ch128[1]);
            mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);

            mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);

            // store channel magnitude here in a new field of dlsch

            dl_ch_mag128[0] = _mm_unpacklo_epi16(mmtmpD0,mmtmpD0);
            dl_ch_mag128b[0] = dl_ch_mag128[0];
            dl_ch_mag128[0] = _mm_mulhi_epi16(dl_ch_mag128[0],QAM_amp128);
            dl_ch_mag128[0] = _mm_slli_epi16(dl_ch_mag128[0],1);
            //print_ints("Re(ch):",(int16_t*)&mmtmpD0);
            //print_shorts("QAM_amp:",(int16_t*)&QAM_amp128);
            //print_shorts("mag:",(int16_t*)&dl_ch_mag128[0]);
            dl_ch_mag128[1] = _mm_unpackhi_epi16(mmtmpD0,mmtmpD0);
            dl_ch_mag128b[1] = dl_ch_mag128[1];
            dl_ch_mag128[1] = _mm_mulhi_epi16(dl_ch_mag128[1],QAM_amp128);
            dl_ch_mag128[1] = _mm_slli_epi16(dl_ch_mag128[1],1);

            dl_ch_mag128b[0] = _mm_mulhi_epi16(dl_ch_mag128b[0],QAM_amp128b);
            dl_ch_mag128b[0] = _mm_slli_epi16(dl_ch_mag128b[0],1);

            dl_ch_mag128b[1] = _mm_mulhi_epi16(dl_ch_mag128b[1],QAM_amp128b);
            dl_ch_mag128b[1] = _mm_slli_epi16(dl_ch_mag128b[1],1);

          }

          // multiply by conjugated channel
          mmtmpD0 = _mm_madd_epi16(dl_ch128[0],rxdataF128[0]);

          // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
          mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[0],_MM_SHUFFLE(2,3,0,1));
          mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
          mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]);
          //  print_ints("im",&mmtmpD1);
          mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[0]);
          // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
          //  print_ints("re(shift)",&mmtmpD0);
          mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
          //  print_ints("im(shift)",&mmtmpD1);
          mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
          mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
          //        print_ints("c0",&mmtmpD2);
          //  print_ints("c1",&mmtmpD3);
          rxdataF_comp128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
          //  print_shorts("rx:",rxdataF128);
          //  print_shorts("ch:",dl_ch128);
          //  print_shorts("pack:",rxdataF_comp128);

          // multiply by conjugated channel
          mmtmpD0 = _mm_madd_epi16(dl_ch128[1],rxdataF128[1]);
          // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
          mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[1],_MM_SHUFFLE(2,3,0,1));
          mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
          mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
          mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[1]);
          // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
          mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
          mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
          mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);

          rxdataF_comp128[1] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
          //  print_shorts("rx:",rxdataF128+1);
          //  print_shorts("ch:",dl_ch128+1);
          //print_shorts("pack:",rxdataF_comp128+1);

          dl_ch128+=2;
          dl_ch_mag128+=2;
          dl_ch_mag128b+=2;
          rxdataF128+=2;
          rxdataF_comp128+=2;
        }
      }else {
        printf ("Channel Compensation: Received number of subcarriers is not multiple of 8, \n"
                 "need to adapt the code!\n");
      }
    }
  }

/*This part of code makes sense only for processing in 2x2 blocks*/
  if (rho) {


    for (aarx=0; aarx<n_rx; aarx++) {
      rho128        = (__m128i *)&rho[aarx][start_point];
      dl_ch128      = (__m128i *)&dl_ch_estimates_ext[aarx][start_point];
      dl_ch128_2    = (__m128i *)&dl_ch_estimates_ext[2+aarx][start_point];

      if (length_mod8 == 0){
        length2 = length>>3;

        for (ii=0; ii<length2; ++ii) {
          // multiply by conjugated channel
          mmtmpD0 = _mm_madd_epi16(dl_ch128[0],dl_ch128_2[0]);
          //  print_ints("re",&mmtmpD0);

          // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
          mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[0],_MM_SHUFFLE(2,3,0,1));
          mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
          mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]);
          //  print_ints("im",&mmtmpD1);
          mmtmpD1 = _mm_madd_epi16(mmtmpD1,dl_ch128_2[0]);
          // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
          //  print_ints("re(shift)",&mmtmpD0);
          mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
          //  print_ints("im(shift)",&mmtmpD1);
          mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
          mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
          //        print_ints("c0",&mmtmpD2);
          //  print_ints("c1",&mmtmpD3);
          rho128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);

          //print_shorts("rx:",dl_ch128_2);
          //print_shorts("ch:",dl_ch128);
          //print_shorts("pack:",rho128);

          // multiply by conjugated channel
          mmtmpD0 = _mm_madd_epi16(dl_ch128[1],dl_ch128_2[1]);
          // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
          mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[1],_MM_SHUFFLE(2,3,0,1));
          mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
          mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
          mmtmpD1 = _mm_madd_epi16(mmtmpD1,dl_ch128_2[1]);
          // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
          mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
          mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
          mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);

          rho128[1] =_mm_packs_epi32(mmtmpD2,mmtmpD3);
          dl_ch128+=2;
          dl_ch128_2+=2;
          rho128+=2;
        }
      }else {
        printf ("Channel Compensation: Received number of subcarriers is not multiple of 8, \n"
                 "need to adapt the code!\n");
      }
    }
  }
  _mm_empty();
  _m_empty();
}

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#if defined(__x86_64__) || defined(__i386__)

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void prec2A_TM56_128(unsigned char pmi,__m128i *ch0,__m128i *ch1)
{
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  __m128i amp;
  amp = _mm_set1_epi16(ONE_OVER_SQRT2_Q15);

  switch (pmi) {
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  case 0 :   // +1 +1
    //    print_shorts("phase 0 :ch0",ch0);
    //    print_shorts("phase 0 :ch1",ch1);
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    ch0[0] = _mm_adds_epi16(ch0[0],ch1[0]);
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    break;
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  case 1 :   // +1 -1
    //    print_shorts("phase 1 :ch0",ch0);
    //    print_shorts("phase 1 :ch1",ch1);
    ch0[0] = _mm_subs_epi16(ch0[0],ch1[0]);
    //    print_shorts("phase 1 :ch0-ch1",ch0);
    break;
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  case 2 :   // +1 +j
    ch1[0] = _mm_sign_epi16(ch1[0],*(__m128i*)&conjugate[0]);
    ch1[0] = _mm_shufflelo_epi16(ch1[0],_MM_SHUFFLE(2,3,0,1));
    ch1[0] = _mm_shufflehi_epi16(ch1[0],_MM_SHUFFLE(2,3,0,1));
    ch0[0] = _mm_subs_epi16(ch0[0],ch1[0]);
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    break;   // +1 -j
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  case 3 :
    ch1[0] = _mm_sign_epi16(ch1[0],*(__m128i*)&conjugate[0]);
    ch1[0] = _mm_shufflelo_epi16(ch1[0],_MM_SHUFFLE(2,3,0,1));
    ch1[0] = _mm_shufflehi_epi16(ch1[0],_MM_SHUFFLE(2,3,0,1));
    ch0[0] = _mm_adds_epi16(ch0[0],ch1[0]);
    break;
  }

  ch0[0] = _mm_mulhi_epi16(ch0[0],amp);
  ch0[0] = _mm_slli_epi16(ch0[0],1);
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  _mm_empty();
  _m_empty();
}
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#elif defined(__arm__)
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void prec2A_TM56_128(unsigned char pmi,__m128i *ch0,__m128i *ch1) {
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  // sqrt(2) is already taken into account in computation sqrt_rho_a, sqrt_rho_b,
  //so removed it
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  //__m128i amp;
  //amp = _mm_set1_epi16(ONE_OVER_SQRT2_Q15);
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  switch (pmi) {
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  case 0 :   // +1 +1
    //    print_shorts("phase 0 :ch0",ch0);
    //    print_shorts("phase 0 :ch1",ch1);
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    ch0[0] = _mm_adds_epi16(ch0[0],ch1[0]);
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    break;
  case 1 :   // +1 -1
    //    print_shorts("phase 1 :ch0",ch0);
    //    print_shorts("phase 1 :ch1",ch1);
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    ch0[0] = _mm_subs_epi16(ch0[0],ch1[0]);
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    //    print_shorts("phase 1 :ch0-ch1",ch0);
    break;
  case 2 :   // +1 +j
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    ch1[0] = _mm_sign_epi16(ch1[0],*(__m128i*)&conjugate[0]);
    ch1[0] = _mm_shufflelo_epi16(ch1[0],_MM_SHUFFLE(2,3,0,1));
    ch1[0] = _mm_shufflehi_epi16(ch1[0],_MM_SHUFFLE(2,3,0,1));
    ch0[0] = _mm_subs_epi16(ch0[0],ch1[0]);
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    break;   // +1 -j
  case 3 :
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    ch1[0] = _mm_sign_epi16(ch1[0],*(__m128i*)&conjugate[0]);
    ch1[0] = _mm_shufflelo_epi16(ch1[0],_MM_SHUFFLE(2,3,0,1));
    ch1[0] = _mm_shufflehi_epi16(ch1[0],_MM_SHUFFLE(2,3,0,1));
    ch0[0] = _mm_adds_epi16(ch0[0],ch1[0]);
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    break;
  }
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  //ch0[0] = _mm_mulhi_epi16(ch0[0],amp);
  //ch0[0] = _mm_slli_epi16(ch0[0],1);
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  _mm_empty();
  _m_empty();
}
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#endif
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// precoding is stream 0 .5(1,1)  .5(1,-1) .5(1,1)  .5(1,-1)
//              stream 1 .5(1,-1) .5(1,1)  .5(1,-1) .5(1,1)
// store "precoded" channel for stream 0 in ch0, stream 1 in ch1

short TM3_prec[8]__attribute__((aligned(16))) = {1,1,-1,-1,1,1,-1,-1} ;

void prec2A_TM3_128(__m128i *ch0,__m128i *ch1) {
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  __m128i amp = _mm_set1_epi16(ONE_OVER_SQRT2_Q15);
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  __m128i tmp0,tmp1;
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  //_mm_mulhi_epi16
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  //  print_shorts("prec2A_TM3 ch0 (before):",ch0);
  //  print_shorts("prec2A_TM3 ch1 (before):",ch1);

  tmp0 = ch0[0];
  tmp1  = _mm_sign_epi16(ch1[0],((__m128i*)&TM3_prec)[0]);
  //  print_shorts("prec2A_TM3 ch1*s (mid):",(__m128i*)TM3_prec);

  ch0[0] = _mm_adds_epi16(ch0[0],tmp1);
  ch1[0] = _mm_subs_epi16(tmp0,tmp1);

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  ch0[0] = _mm_mulhi_epi16(ch0[0],amp);
  ch0[0] = _mm_slli_epi16(ch0[0],1);

  ch1[0] = _mm_mulhi_epi16(ch1[0],amp);
  ch1[0] = _mm_slli_epi16(ch1[0],1);
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  //  print_shorts("prec2A_TM3 ch0 (mid):",&tmp0);
  //  print_shorts("prec2A_TM3 ch1 (mid):",ch1);

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  //ch0[0] = _mm_mulhi_epi16(ch0[0],amp);
  //ch0[0] = _mm_slli_epi16(ch0[0],1);
  //ch1[0] = _mm_mulhi_epi16(ch1[0],amp);
  //ch1[0] = _mm_slli_epi16(ch1[0],1);
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  //ch0[0] = _mm_srai_epi16(ch0[0],1);
  //ch1[0] = _mm_srai_epi16(ch1[0],1);
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  //  print_shorts("prec2A_TM3 ch0 (after):",ch0);
  //  print_shorts("prec2A_TM3 ch1 (after):",ch1);
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  _mm_empty();
  _m_empty();
}

// pmi = 0 => stream 0 (1,1), stream 1 (1,-1)
// pmi = 1 => stream 0 (1,j), stream 2 (1,-j)

void prec2A_TM4_128(int pmi,__m128i *ch0,__m128i *ch1) {
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// sqrt(2) is already taken into account in computation sqrt_rho_a, sqrt_rho_b,
//so divide by 2 is replaced by divide by sqrt(2).
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 // printf ("demod pmi=%d\n", pmi);
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 __m128i amp;
 amp = _mm_set1_epi16(ONE_OVER_SQRT2_Q15);
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  __m128i tmp0,tmp1;
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 // print_shorts("prec2A_TM4 ch0 (before):",ch0);
 // print_shorts("prec2A_TM4 ch1 (before):",ch1);
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  if (pmi == 0) { //[1 1;1 -1]
    tmp0 = ch0[0];
    tmp1 = ch1[0];
    ch0[0] = _mm_adds_epi16(tmp0,tmp1);
    ch1[0] = _mm_subs_epi16(tmp0,tmp1);
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  }
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  else { //ch0+j*ch1 ch0-j*ch1
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    tmp0 = ch0[0];
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    tmp1   = _mm_sign_epi16(ch1[0],*(__m128i*)&conjugate[0]);
    tmp1   = _mm_shufflelo_epi16(tmp1,_MM_SHUFFLE(2,3,0,1));
    tmp1   = _mm_shufflehi_epi16(tmp1,_MM_SHUFFLE(2,3,0,1));
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    ch0[0] = _mm_subs_epi16(tmp0,tmp1);
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    ch1[0] = _mm_add_epi16(tmp0,tmp1);
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  }
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  //print_shorts("prec2A_TM4 ch0 (middle):",ch0);
  //print_shorts("prec2A_TM4 ch1 (middle):",ch1);

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  ch0[0] = _mm_mulhi_epi16(ch0[0],amp);
  ch0[0] = _mm_slli_epi16(ch0[0],1);
  ch1[0] = _mm_mulhi_epi16(ch1[0],amp);
  ch1[0] = _mm_slli_epi16(ch1[0],1);

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 // ch0[0] = _mm_srai_epi16(ch0[0],1); //divide by 2
 // ch1[0] = _mm_srai_epi16(ch1[0],1); //divide by 2
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  //print_shorts("prec2A_TM4 ch0 (end):",ch0);
  //print_shorts("prec2A_TM4 ch1 (end):",ch1);
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  _mm_empty();
  _m_empty();
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 // print_shorts("prec2A_TM4 ch0 (end):",ch0);
  //print_shorts("prec2A_TM4 ch1 (end):",ch1);
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}

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void dlsch_channel_compensation_TM56(int **rxdataF_ext,
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                                     int **dl_ch_estimates_ext,
                                     int **dl_ch_mag,
                                     int **dl_ch_magb,
                                     int **rxdataF_comp,
                                     unsigned char *pmi_ext,
                                     LTE_DL_FRAME_PARMS *frame_parms,
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                                     PHY_MEASUREMENTS *measurements,
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                                     int eNB_id,
                                     unsigned char symbol,
                                     unsigned char mod_order,
                                     unsigned short nb_rb,
                                     unsigned char output_shift,
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                                     unsigned char dl_power_off)
{

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#if defined(__x86_64__) || defined(__i386__)

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  unsigned short rb,Nre;
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  __m128i *dl_ch0_128,*dl_ch1_128,*dl_ch_mag128,*dl_ch_mag128b,*rxdataF128,*rxdataF_comp128;
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  unsigned char aarx=0,symbol_mod,pilots=0;
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  int precoded_signal_strength=0;
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  __m128i mmtmpD0,mmtmpD1,mmtmpD2,mmtmpD3,QAM_amp128,QAM_amp128b;
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  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
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  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp)))
    pilots=1;

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  //printf("comp prec: symbol %d, pilots %d\n",symbol, pilots);

  if (mod_order == 4) {
    QAM_amp128 = _mm_set1_epi16(QAM16_n1);
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    QAM_amp128b = _mm_setzero_si128();
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  } else if (mod_order == 6) {
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    QAM_amp128  = _mm_set1_epi16(QAM64_n1);
    QAM_amp128b = _mm_set1_epi16(QAM64_n2);
  }
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  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {

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    dl_ch0_128          = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch1_128          = (__m128i *)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
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    dl_ch_mag128      = (__m128i *)&dl_ch_mag[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch_mag128b     = (__m128i *)&dl_ch_magb[aarx][symbol*frame_parms->N_RB_DL*12];
    rxdataF128        = (__m128i *)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    rxdataF_comp128   = (__m128i *)&rxdataF_comp[aarx][symbol*frame_parms->N_RB_DL*12];

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    for (rb=0; rb<nb_rb; rb++) {
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      // combine TX channels using precoder from pmi
#ifdef DEBUG_DLSCH_DEMOD
      printf("mode 6 prec: rb %d, pmi->%d\n",rb,pmi_ext[rb]);
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#endif
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      prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128[0],&dl_ch1_128[0]);
      prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128[1],&dl_ch1_128[1]);
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      if (pilots==0) {
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        prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128[2],&dl_ch1_128[2]);
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      }

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      if (mod_order>2) {
        // get channel amplitude if not QPSK

        mmtmpD0 = _mm_madd_epi16(dl_ch0_128[0],dl_ch0_128[0]);
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);

        mmtmpD1 = _mm_madd_epi16(dl_ch0_128[1],dl_ch0_128[1]);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);

        mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);

        dl_ch_mag128[0] = _mm_unpacklo_epi16(mmtmpD0,mmtmpD0);
        dl_ch_mag128b[0] = dl_ch_mag128[0];
        dl_ch_mag128[0] = _mm_mulhi_epi16(dl_ch_mag128[0],QAM_amp128);
        dl_ch_mag128[0] = _mm_slli_epi16(dl_ch_mag128[0],1);

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        //print_shorts("dl_ch_mag128[0]=",&dl_ch_mag128[0]);
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        //print_shorts("dl_ch_mag128[0]=",&dl_ch_mag128[0]);

        dl_ch_mag128[1] = _mm_unpackhi_epi16(mmtmpD0,mmtmpD0);
        dl_ch_mag128b[1] = dl_ch_mag128[1];
        dl_ch_mag128[1] = _mm_mulhi_epi16(dl_ch_mag128[1],QAM_amp128);
        dl_ch_mag128[1] = _mm_slli_epi16(dl_ch_mag128[1],1);

        if (pilots==0) {
          mmtmpD0 = _mm_madd_epi16(dl_ch0_128[2],dl_ch0_128[2]);
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);

          mmtmpD1 = _mm_packs_epi32(mmtmpD0,mmtmpD0);

          dl_ch_mag128[2] = _mm_unpacklo_epi16(mmtmpD1,mmtmpD1);
          dl_ch_mag128b[2] = dl_ch_mag128[2];

          dl_ch_mag128[2] = _mm_mulhi_epi16(dl_ch_mag128[2],QAM_amp128);
          dl_ch_mag128[2] = _mm_slli_epi16(dl_ch_mag128[2],1);
        }

        dl_ch_mag128b[0] = _mm_mulhi_epi16(dl_ch_mag128b[0],QAM_amp128b);
        dl_ch_mag128b[0] = _mm_slli_epi16(dl_ch_mag128b[0],1);

        //print_shorts("dl_ch_mag128b[0]=",&dl_ch_mag128b[0]);

        dl_ch_mag128b[1] = _mm_mulhi_epi16(dl_ch_mag128b[1],QAM_amp128b);
        dl_ch_mag128b[1] = _mm_slli_epi16(dl_ch_mag128b[1],1);

        if (pilots==0) {
          dl_ch_mag128b[2] = _mm_mulhi_epi16(dl_ch_mag128b[2],QAM_amp128b);
          dl_ch_mag128b[2] = _mm_slli_epi16(dl_ch_mag128b[2],1);
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2209

2210
        }
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      }

      // MF multiply by conjugated channel
2214
      mmtmpD0 = _mm_madd_epi16(dl_ch0_128[0],rxdataF128[0]);
2215
      //        print_ints("re",&mmtmpD0);
2216

2217 2218 2219 2220
      // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
      mmtmpD1 = _mm_shufflelo_epi16(dl_ch0_128[0],_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]);
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2222
      //        print_ints("im",&mmtmpD1);
2223 2224 2225
      mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[0]);
      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
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      //        print_ints("re(shift)",&mmtmpD0);
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      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
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      //        print_ints("im(shift)",&mmtmpD1);
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      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
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      //        print_ints("c0",&mmtmpD2);
2232
      //        print_ints("c1",&mmtmpD3);
2233
      rxdataF_comp128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
2234 2235 2236
      //        print_shorts("rx:",rxdataF128);
      //        print_shorts("ch:",dl_ch128);
      //        print_shorts("pack:",rxdataF_comp128);
2237

2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249
      // multiply by conjugated channel
      mmtmpD0 = _mm_madd_epi16(dl_ch0_128[1],rxdataF128[1]);
      // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
      mmtmpD1 = _mm_shufflelo_epi16(dl_ch0_128[1],_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
      mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[1]);
      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
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      rxdataF_comp128[1] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
2252 2253 2254 2255
      //  print_shorts("rx:",rxdataF128+1);
      //  print_shorts("ch:",dl_ch128+1);
      //  print_shorts("pack:",rxdataF_comp128+1);

2256
      if (pilots==0) {
2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287
        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch0_128[2],rxdataF128[2]);
        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch0_128[2],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[2]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);

        rxdataF_comp128[2] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
        //  print_shorts("rx:",rxdataF128+2);
        //  print_shorts("ch:",dl_ch128+2);
        //        print_shorts("pack:",rxdataF_comp128+2);

        dl_ch0_128+=3;
        dl_ch1_128+=3;
        dl_ch_mag128+=3;
        dl_ch_mag128b+=3;
        rxdataF128+=3;
        rxdataF_comp128+=3;
      } else {
        dl_ch0_128+=2;
        dl_ch1_128+=2;
        dl_ch_mag128+=2;
        dl_ch_mag128b+=2;
        rxdataF128+=2;
        rxdataF_comp128+=2;
2288 2289
      }
    }
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2291
    Nre = (pilots==0) ? 12 : 8;
2292

2293
    precoded_signal_strength += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
2294
                                                     (nb_rb*Nre))) - (measurements->n0_power[aarx]));
2295
  } // rx_antennas
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2297
  measurements->precoded_cqi_dB[eNB_id][0] = dB_fixed2(precoded_signal_strength,measurements->n0_power_tot);
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  //printf("eNB_id %d, symbol %d: precoded CQI %d dB\n",eNB_id,symbol,
2300
  //   measurements->precoded_cqi_dB[eNB_id][0]);
2301 2302 2303

#elif defined(__arm__)

2304 2305
  uint32_t rb,Nre;
  uint32_t aarx,symbol_mod,pilots=0;
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2307 2308 2309 2310 2311
  int16x4_t *dl_ch0_128,*dl_ch1_128,*rxdataF128;
  int16x8_t *dl_ch0_128b,*dl_ch1_128b;
  int32x4_t mmtmpD0,mmtmpD1,mmtmpD0b,mmtmpD1b;
  int16x8_t *dl_ch_mag128,*dl_ch_mag128b,mmtmpD2,mmtmpD3,mmtmpD4,*rxdataF_comp128;
  int16x8_t QAM_amp128,QAM_amp128b;
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  int16_t conj[4]__attribute__((aligned(16))) = {1,-1,1,-1};
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  int32x4_t output_shift128 = vmovq_n_s32(-(int32_t)output_shift);
  int32_t precoded_signal_strength=0;
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  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
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  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
2319
    if (frame_parms->nb_antenna_ports_eNB==1) // 10 out of 12 so don't reduce size
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      { nb_rb=1+(5*nb_rb/6); }
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2322 2323
    else
      { pilots=1; }
2324
  }
2325 2326


2327
  if (mod_order == 4) {
2328 2329
    QAM_amp128  = vmovq_n_s16(QAM16_n1);  // 2/sqrt(10)
    QAM_amp128b = vmovq_n_s16(0);
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  } else if (mod_order == 6) {
2332 2333
    QAM_amp128  = vmovq_n_s16(QAM64_n1); //
    QAM_amp128b = vmovq_n_s16(QAM64_n2);
2334
  }
2335

2336
  //    printf("comp: rxdataF_comp %p, symbol %d\n",rxdataF_comp[0],symbol);
2337

2338
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
2339 2340 2341



2342 2343 2344 2345 2346 2347 2348 2349
    dl_ch0_128          = (int16x4_t*)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch1_128          = (int16x4_t*)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch0_128b         = (int16x8_t*)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch1_128b         = (int16x8_t*)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch_mag128        = (int16x8_t*)&dl_ch_mag[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch_mag128b       = (int16x8_t*)&dl_ch_magb[aarx][symbol*frame_parms->N_RB_DL*12];
    rxdataF128          = (int16x4_t*)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    rxdataF_comp128     = (int16x8_t*)&rxdataF_comp[aarx][symbol*frame_parms->N_RB_DL*12];
2350

2351
    for (rb=0; rb<nb_rb; rb++) {
2352
#ifdef DEBUG_DLSCH_DEMOD
2353
      printf("mode 6 prec: rb %d, pmi->%d\n",rb,pmi_ext[rb]);
2354
#endif
2355 2356
      prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128b[0],&dl_ch1_128b[0]);
      prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128b[1],&dl_ch1_128b[1]);
2357

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      if (pilots==0) {
2359
        prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128b[2],&dl_ch1_128b[2]);
2360
      }
2361

2362
      if (mod_order>2) {
2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396
        // get channel amplitude if not QPSK
        mmtmpD0 = vmull_s16(dl_ch0_128[0], dl_ch0_128[0]);
        // mmtmpD0 = [ch0*ch0,ch1*ch1,ch2*ch2,ch3*ch3];
        mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
        // mmtmpD0 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3]>>output_shift128 on 32-bits
        mmtmpD1 = vmull_s16(dl_ch0_128[1], dl_ch0_128[1]);
        mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
        mmtmpD2 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
        // mmtmpD2 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3,ch4*ch4 + ch5*ch5,ch4*ch4 + ch5*ch5,ch6*ch6 + ch7*ch7,ch6*ch6 + ch7*ch7]>>output_shift128 on 16-bits
        mmtmpD0 = vmull_s16(dl_ch0_128[2], dl_ch0_128[2]);
        mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
        mmtmpD1 = vmull_s16(dl_ch0_128[3], dl_ch0_128[3]);
        mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
        mmtmpD3 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
        if (pilots==0) {
          mmtmpD0 = vmull_s16(dl_ch0_128[4], dl_ch0_128[4]);
          mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
          mmtmpD1 = vmull_s16(dl_ch0_128[5], dl_ch0_128[5]);
          mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
          mmtmpD4 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));


        }

        dl_ch_mag128b[0] = vqdmulhq_s16(mmtmpD2,QAM_amp128b);
        dl_ch_mag128b[1] = vqdmulhq_s16(mmtmpD3,QAM_amp128b);
        dl_ch_mag128[0] = vqdmulhq_s16(mmtmpD2,QAM_amp128);
        dl_ch_mag128[1] = vqdmulhq_s16(mmtmpD3,QAM_amp128);


        if (pilots==0) {
          dl_ch_mag128b[2] = vqdmulhq_s16(mmtmpD4,QAM_amp128b);
          dl_ch_mag128[2]  = vqdmulhq_s16(mmtmpD4,QAM_amp128);
        }
2397
      }
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      mmtmpD0 = vmull_s16(dl_ch0_128[0], rxdataF128[0]);
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      //mmtmpD0 = [Re(ch[0])Re(rx[0]) Im(ch[0])Im(ch[0]) Re(ch[1])Re(rx[1]) Im(ch[1])Im(ch[1])]
2400
      mmtmpD1 = vmull_s16(dl_ch0_128[1], rxdataF128[1]);
2401
      //mmtmpD1 = [Re(ch[2])Re(rx[2]) Im(ch[2])Im(ch[2]) Re(ch[3])Re(rx[3]) Im(ch[3])Im(ch[3])]
2402
      mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
2403
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
2404 2405
      //mmtmpD0 = [Re(ch[0])Re(rx[0])+Im(ch[0])Im(ch[0]) Re(ch[1])Re(rx[1])+Im(ch[1])Im(ch[1]) Re(ch[2])Re(rx[2])+Im(ch[2])Im(ch[2]) Re(ch[3])Re(rx[3])+Im(ch[3])Im(ch[3])]

2406
      mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[0],*(int16x4_t*)conj)), rxdataF128[0]);
2407
      //mmtmpD0 = [-Im(ch[0])Re(rx[0]) Re(ch[0])Im(rx[0]) -Im(ch[1])Re(rx[1]) Re(ch[1])Im(rx[1])]
2408
      mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[1],*(int16x4_t*)conj)), rxdataF128[1]);
2409
      //mmtmpD0 = [-Im(ch[2])Re(rx[2]) Re(ch[2])Im(rx[2]) -Im(ch[3])Re(rx[3]) Re(ch[3])Im(rx[3])]
2410
      mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
2411
                             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
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      //mmtmpD1 = [-Im(ch[0])Re(rx[0])+Re(ch[0])Im(rx[0]) -Im(ch[1])Re(rx[1])+Re(ch[1])Im(rx[1]) -Im(ch[2])Re(rx[2])+Re(ch[2])Im(rx[2]) -Im(ch[3])Re(rx[3])+Re(ch[3])Im(rx[3])]
2413

2414 2415 2416
      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp128[0] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
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2418 2419 2420
      mmtmpD0 = vmull_s16(dl_ch0_128[2], rxdataF128[2]);
      mmtmpD1 = vmull_s16(dl_ch0_128[3], rxdataF128[3]);
      mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
2421
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
2422

2423 2424 2425
      mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[2],*(int16x4_t*)conj)), rxdataF128[2]);
      mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[3],*(int16x4_t*)conj)), rxdataF128[3]);
      mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
2426
                             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
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2428 2429 2430
      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp128[1] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
2431

2432
      if (pilots==0) {
2433 2434 2435 2436
        mmtmpD0 = vmull_s16(dl_ch0_128[4], rxdataF128[4]);
        mmtmpD1 = vmull_s16(dl_ch0_128[5], rxdataF128[5]);
        mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
                               vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
2437

2438 2439 2440 2441
        mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[4],*(int16x4_t*)conj)), rxdataF128[4]);
        mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[5],*(int16x4_t*)conj)), rxdataF128[5]);
        mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
                               vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
2442 2443


2444 2445 2446
        mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
        mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
        rxdataF_comp128[2] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
2447 2448


2449 2450 2451 2452 2453 2454
        dl_ch0_128+=6;
        dl_ch1_128+=6;
        dl_ch_mag128+=3;
        dl_ch_mag128b+=3;
        rxdataF128+=6;
        rxdataF_comp128+=3;
2455

2456
      } else { // we have a smaller PDSCH in symbols with pilots so skip last group of 4 REs and increment less
2457 2458 2459 2460 2461 2462
        dl_ch0_128+=4;
        dl_ch1_128+=4;
        dl_ch_mag128+=2;
        dl_ch_mag128b+=2;
        rxdataF128+=4;
        rxdataF_comp128+=2;
2463 2464
      }
    }
2465

2466
    Nre = (pilots==0) ? 12 : 8;
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2467

2468

2469
    precoded_signal_strength += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
2470 2471

                                                     (nb_rb*Nre))) - (measurements->n0_power[aarx]));
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    // rx_antennas
  }
2474
  measurements->precoded_cqi_dB[eNB_id][0] = dB_fixed2(precoded_signal_strength,measurements->n0_power_tot);
2475

2476
  //printf("eNB_id %d, symbol %d: precoded CQI %d dB\n",eNB_id,symbol,
2477
  //     measurements->precoded_cqi_dB[eNB_id][0]);
2478

2479
#endif
2480
  _mm_empty();
2481
  _m_empty();
2482
}
2483

2484
void dlsch_channel_compensation_TM34(LTE_DL_FRAME_PARMS *frame_parms,
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                                    LTE_UE_PDSCH *pdsch_vars,
                                    PHY_MEASUREMENTS *measurements,
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                                    int eNB_id,
                                    unsigned char symbol,
                                    unsigned char mod_order0,
                                    unsigned char mod_order1,
2491
                                    int harq_pid,
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                                    int round,
2493
                                    MIMO_mode_t mimo_mode,
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                                    unsigned short nb_rb,
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                                    unsigned char output_shift0,
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                                    unsigned char output_shift1) {
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#if defined(__x86_64__) || defined(__i386__)

2500 2501 2502
  unsigned short rb,Nre;
  __m128i *dl_ch0_128,*dl_ch1_128,*dl_ch_mag0_128,*dl_ch_mag1_128,*dl_ch_mag0_128b,*dl_ch_mag1_128b,*rxdataF128,*rxdataF_comp0_128,*rxdataF_comp1_128;
  unsigned char aarx=0,symbol_mod,pilots=0;
2503
  int precoded_signal_strength0=0,precoded_signal_strength1=0;
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2504
  int rx_power_correction;
2505

2506 2507 2508
  int **rxdataF_ext           = pdsch_vars->rxdataF_ext;
  int **dl_ch_estimates_ext   = pdsch_vars->dl_ch_estimates_ext;
  int **dl_ch_mag0            = pdsch_vars->dl_ch_mag0;
2509
  int **dl_ch_mag1            = pdsch_vars->dl_ch_mag1[harq_pid][round];
2510
  int **dl_ch_magb0           = pdsch_vars->dl_ch_magb0;
2511
  int **dl_ch_magb1           = pdsch_vars->dl_ch_magb1[harq_pid][round];
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  int **rxdataF_comp0         = pdsch_vars->rxdataF_comp0;
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  int **rxdataF_comp1         = pdsch_vars->rxdataF_comp1[harq_pid][round];
2514
  unsigned char *pmi_ext      = pdsch_vars->pmi_ext;
2515 2516
  __m128i mmtmpD0,mmtmpD1,mmtmpD2,mmtmpD3,QAM_amp0_128,QAM_amp0_128b,QAM_amp1_128,QAM_amp1_128b;

2517
  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
2518

2519 2520 2521 2522
  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp)))
    pilots=1;

  rx_power_correction = 1;
2523

2524
 // printf("comp prec: symbol %d, pilots %d\n",symbol, pilots);
2525 2526 2527

  if (mod_order0 == 4) {
    QAM_amp0_128  = _mm_set1_epi16(QAM16_n1);
2528
    QAM_amp0_128b = _mm_setzero_si128();
2529
  } else if (mod_order0 == 6) {
2530 2531 2532
    QAM_amp0_128  = _mm_set1_epi16(QAM64_n1);
    QAM_amp0_128b = _mm_set1_epi16(QAM64_n2);
  }
2533

2534 2535
  if (mod_order1 == 4) {
    QAM_amp1_128  = _mm_set1_epi16(QAM16_n1);
2536
    QAM_amp1_128b = _mm_setzero_si128();
2537
  } else if (mod_order1 == 6) {
2538 2539 2540
    QAM_amp1_128  = _mm_set1_epi16(QAM64_n1);
    QAM_amp1_128b = _mm_set1_epi16(QAM64_n2);
  }
2541

2542
  for (aarx=0;aarx<frame_parms->nb_antennas_rx;aarx++) {
2543

2544
   /* if (aarx==0) {
2545
      output_shift=output_shift0;
2546 2547
    }
      else {
2548
        output_shift=output_shift1;
2549
      } */
2550

2551
     // printf("antenna %d\n", aarx);
2552
   // printf("symbol %d, rx antenna %d\n", symbol, aarx);
2553

2554 2555
    dl_ch0_128          = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12]; // this is h11
    dl_ch1_128          = (__m128i *)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12]; // this is h12
2556

2557

2558 2559 2560 2561
    dl_ch_mag0_128      = (__m128i *)&dl_ch_mag0[aarx][symbol*frame_parms->N_RB_DL*12]; //responsible for x1
    dl_ch_mag0_128b     = (__m128i *)&dl_ch_magb0[aarx][symbol*frame_parms->N_RB_DL*12];//responsible for x1
    dl_ch_mag1_128      = (__m128i *)&dl_ch_mag1[aarx][symbol*frame_parms->N_RB_DL*12];   //responsible for x2. always coming from tx2
    dl_ch_mag1_128b     = (__m128i *)&dl_ch_magb1[aarx][symbol*frame_parms->N_RB_DL*12];  //responsible for x2. always coming from tx2
2562
    rxdataF128          = (__m128i *)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12]; //received signal on antenna of interest h11*x1+h12*x2
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    rxdataF_comp0_128   = (__m128i *)&rxdataF_comp0[aarx][symbol*frame_parms->N_RB_DL*12]; //result of multipl with MF x1 on antenna of interest
    rxdataF_comp1_128   = (__m128i *)&rxdataF_comp1[aarx][symbol*frame_parms->N_RB_DL*12]; //result of multipl with MF x2 on antenna of interest
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    for (rb=0; rb<nb_rb; rb++) {
2567

2568
      // combine TX channels using precoder from pmi
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      if (mimo_mode==LARGE_CDD) {
        prec2A_TM3_128(&dl_ch0_128[0],&dl_ch1_128[0]);
        prec2A_TM3_128(&dl_ch0_128[1],&dl_ch1_128[1]);
2572 2573


2574
        if (pilots==0) {
2575
          prec2A_TM3_128(&dl_ch0_128[2],&dl_ch1_128[2]);
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        }
      }
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1) {
2579 2580 2581
        prec2A_TM4_128(0,&dl_ch0_128[0],&dl_ch1_128[0]);
        prec2A_TM4_128(0,&dl_ch0_128[1],&dl_ch1_128[1]);

2582
        if (pilots==0) {
2583
          prec2A_TM4_128(0,&dl_ch0_128[2],&dl_ch1_128[2]);
2584 2585 2586 2587 2588
        }
      }
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODINGj) {
        prec2A_TM4_128(1,&dl_ch0_128[0],&dl_ch1_128[0]);
        prec2A_TM4_128(1,&dl_ch0_128[1],&dl_ch1_128[1]);
2589

2590
        if (pilots==0) {
2591
          prec2A_TM4_128(1,&dl_ch0_128[2],&dl_ch1_128[2]);
2592 2593
        }
      }
2594

2595
        else if (mimo_mode==DUALSTREAM_PUSCH_PRECODING) {
2596 2597
        prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128[0],&dl_ch1_128[0]);
        prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128[1],&dl_ch1_128[1]);
2598

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2599
        if (pilots==0) {
2600
          prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128[2],&dl_ch1_128[2]);
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2601 2602
        }
      }
2603 2604


2605 2606 2607
      else {
        LOG_E(PHY,"Unknown MIMO mode\n");
        return;
2608 2609
      }

2610

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      if (mod_order0>2) {
        // get channel amplitude if not QPSK

        mmtmpD0 = _mm_madd_epi16(dl_ch0_128[0],dl_ch0_128[0]);
2615
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift0);
2616 2617

        mmtmpD1 = _mm_madd_epi16(dl_ch0_128[1],dl_ch0_128[1]);
2618
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift0);
2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636

        mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);

        dl_ch_mag0_128[0] = _mm_unpacklo_epi16(mmtmpD0,mmtmpD0);
        dl_ch_mag0_128b[0] = dl_ch_mag0_128[0];
        dl_ch_mag0_128[0] = _mm_mulhi_epi16(dl_ch_mag0_128[0],QAM_amp0_128);
        dl_ch_mag0_128[0] = _mm_slli_epi16(dl_ch_mag0_128[0],1);

        //  print_shorts("dl_ch_mag0_128[0]=",&dl_ch_mag0_128[0]);


        dl_ch_mag0_128[1] = _mm_unpackhi_epi16(mmtmpD0,mmtmpD0);
        dl_ch_mag0_128b[1] = dl_ch_mag0_128[1];
        dl_ch_mag0_128[1] = _mm_mulhi_epi16(dl_ch_mag0_128[1],QAM_amp0_128);
        dl_ch_mag0_128[1] = _mm_slli_epi16(dl_ch_mag0_128[1],1);

        if (pilots==0) {
          mmtmpD0 = _mm_madd_epi16(dl_ch0_128[2],dl_ch0_128[2]);
2637
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift0);
2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650

          mmtmpD1 = _mm_packs_epi32(mmtmpD0,mmtmpD0);

          dl_ch_mag0_128[2] = _mm_unpacklo_epi16(mmtmpD1,mmtmpD1);
          dl_ch_mag0_128b[2] = dl_ch_mag0_128[2];

          dl_ch_mag0_128[2] = _mm_mulhi_epi16(dl_ch_mag0_128[2],QAM_amp0_128);
          dl_ch_mag0_128[2] = _mm_slli_epi16(dl_ch_mag0_128[2],1);
        }

        dl_ch_mag0_128b[0] = _mm_mulhi_epi16(dl_ch_mag0_128b[0],QAM_amp0_128b);
        dl_ch_mag0_128b[0] = _mm_slli_epi16(dl_ch_mag0_128b[0],1);

2651
       // print_shorts("dl_ch_mag0_128b[0]=",&dl_ch_mag0_128b[0]);
2652 2653 2654 2655 2656 2657 2658 2659

        dl_ch_mag0_128b[1] = _mm_mulhi_epi16(dl_ch_mag0_128b[1],QAM_amp0_128b);
        dl_ch_mag0_128b[1] = _mm_slli_epi16(dl_ch_mag0_128b[1],1);

        if (pilots==0) {
          dl_ch_mag0_128b[2] = _mm_mulhi_epi16(dl_ch_mag0_128b[2],QAM_amp0_128b);
          dl_ch_mag0_128b[2] = _mm_slli_epi16(dl_ch_mag0_128b[2],1);
        }
2660 2661
      }

2662 2663 2664 2665
      if (mod_order1>2) {
        // get channel amplitude if not QPSK

        mmtmpD0 = _mm_madd_epi16(dl_ch1_128[0],dl_ch1_128[0]);
2666
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift1);
2667 2668

        mmtmpD1 = _mm_madd_epi16(dl_ch1_128[1],dl_ch1_128[1]);
2669
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift1);
2670 2671 2672 2673 2674 2675 2676 2677

        mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);

        dl_ch_mag1_128[0] = _mm_unpacklo_epi16(mmtmpD0,mmtmpD0);
        dl_ch_mag1_128b[0] = dl_ch_mag1_128[0];
        dl_ch_mag1_128[0] = _mm_mulhi_epi16(dl_ch_mag1_128[0],QAM_amp1_128);
        dl_ch_mag1_128[0] = _mm_slli_epi16(dl_ch_mag1_128[0],1);

2678
       // print_shorts("dl_ch_mag1_128[0]=",&dl_ch_mag1_128[0]);
2679 2680 2681 2682 2683 2684 2685 2686

        dl_ch_mag1_128[1] = _mm_unpackhi_epi16(mmtmpD0,mmtmpD0);
        dl_ch_mag1_128b[1] = dl_ch_mag1_128[1];
        dl_ch_mag1_128[1] = _mm_mulhi_epi16(dl_ch_mag1_128[1],QAM_amp1_128);
        dl_ch_mag1_128[1] = _mm_slli_epi16(dl_ch_mag1_128[1],1);

        if (pilots==0) {
          mmtmpD0 = _mm_madd_epi16(dl_ch1_128[2],dl_ch1_128[2]);
2687
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift1);
2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700

          mmtmpD1 = _mm_packs_epi32(mmtmpD0,mmtmpD0);

          dl_ch_mag1_128[2] = _mm_unpacklo_epi16(mmtmpD1,mmtmpD1);
          dl_ch_mag1_128b[2] = dl_ch_mag1_128[2];

          dl_ch_mag1_128[2] = _mm_mulhi_epi16(dl_ch_mag1_128[2],QAM_amp1_128);
          dl_ch_mag1_128[2] = _mm_slli_epi16(dl_ch_mag1_128[2],1);
        }

        dl_ch_mag1_128b[0] = _mm_mulhi_epi16(dl_ch_mag1_128b[0],QAM_amp1_128b);
        dl_ch_mag1_128b[0] = _mm_slli_epi16(dl_ch_mag1_128b[0],1);

2701
       // print_shorts("dl_ch_mag1_128b[0]=",&dl_ch_mag1_128b[0]);
2702 2703 2704 2705 2706 2707 2708 2709

        dl_ch_mag1_128b[1] = _mm_mulhi_epi16(dl_ch_mag1_128b[1],QAM_amp1_128b);
        dl_ch_mag1_128b[1] = _mm_slli_epi16(dl_ch_mag1_128b[1],1);

        if (pilots==0) {
          dl_ch_mag1_128b[2] = _mm_mulhi_epi16(dl_ch_mag1_128b[2],QAM_amp1_128b);
          dl_ch_mag1_128b[2] = _mm_slli_epi16(dl_ch_mag1_128b[2],1);
        }
2710 2711 2712 2713 2714
      }

      // layer 0
      // MF multiply by conjugated channel
      mmtmpD0 = _mm_madd_epi16(dl_ch0_128[0],rxdataF128[0]);
2715
    //  print_ints("re",&mmtmpD0);
2716

2717 2718 2719 2720 2721
      // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
      mmtmpD1 = _mm_shufflelo_epi16(dl_ch0_128[0],_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]);
      mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[0]);
2722
           // print_ints("im",&mmtmpD1);
2723
      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
2724
      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift0);
2725 2726
           // printf("Shift: %d\n",output_shift);
          // print_ints("re(shift)",&mmtmpD0);
2727
      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift0);
2728
           // print_ints("im(shift)",&mmtmpD1);
2729 2730
      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
2731 2732
          //  print_ints("c0",&mmtmpD2);
          // print_ints("c1",&mmtmpD3);
2733
      rxdataF_comp0_128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
2734

2735 2736 2737
           // print_shorts("rx:",rxdataF128);
           // print_shorts("ch:",dl_ch0_128);
        // print_shorts("pack:",rxdataF_comp0_128);
2738

2739 2740 2741 2742 2743 2744 2745 2746
      // multiply by conjugated channel
      mmtmpD0 = _mm_madd_epi16(dl_ch0_128[1],rxdataF128[1]);
      // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
      mmtmpD1 = _mm_shufflelo_epi16(dl_ch0_128[1],_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
      mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[1]);
      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
2747 2748
      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift0);
      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift0);
2749 2750
      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
2751

2752
      rxdataF_comp0_128[1] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
2753 2754
           //  print_shorts("rx:",rxdataF128+1);
            //  print_shorts("ch:",dl_ch0_128+1);
2755
            // print_shorts("pack:",rxdataF_comp0_128+1);
2756

2757
      if (pilots==0) {
2758 2759 2760 2761 2762 2763 2764 2765
        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch0_128[2],rxdataF128[2]);
        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch0_128[2],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[2]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
2766 2767
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift0);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift0);
2768 2769 2770 2771
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);

        rxdataF_comp0_128[2] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
2772 2773 2774
           //   print_shorts("rx:",rxdataF128+2);
           //   print_shorts("ch:",dl_ch0_128+2);
            //  print_shorts("pack:",rxdataF_comp0_128+2);
2775 2776

      }
2777 2778


2779 2780 2781
      // layer 1
      // MF multiply by conjugated channel
      mmtmpD0 = _mm_madd_epi16(dl_ch1_128[0],rxdataF128[0]);
2782
           //  print_ints("re",&mmtmpD0);
2783

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2784
     // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
2785
      mmtmpD1 = _mm_shufflelo_epi16(dl_ch1_128[0],_MM_SHUFFLE(2,3,0,1));
2786 2787
      mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]);
2788
            //  print_ints("im",&mmtmpD1);
2789 2790
      mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[0]);
      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
2791
      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift1);
2792
             // print_ints("re(shift)",&mmtmpD0);
2793
      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift1);
2794
             // print_ints("im(shift)",&mmtmpD1);
2795 2796
      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
2797 2798
             // print_ints("c0",&mmtmpD2);
             // print_ints("c1",&mmtmpD3);
2799
      rxdataF_comp1_128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
2800 2801 2802
            // print_shorts("rx:",rxdataF128);
            //  print_shorts("ch:",dl_ch1_128);
            // print_shorts("pack:",rxdataF_comp1_128);
2803

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2804
     // multiply by conjugated channel
2805
      mmtmpD0 = _mm_madd_epi16(dl_ch1_128[1],rxdataF128[1]);
2806
      // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
2807
      mmtmpD1 = _mm_shufflelo_epi16(dl_ch1_128[1],_MM_SHUFFLE(2,3,0,1));
2808 2809 2810 2811
      mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
      mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[1]);
      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
2812 2813
      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift1);
      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift1);
2814 2815
      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
2816

2817
      rxdataF_comp1_128[1] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
2818 2819
            //  print_shorts("rx:",rxdataF128+1);
           // print_shorts("ch:",dl_ch1_128+1);
2820
            // print_shorts("pack:",rxdataF_comp1_128+1);
2821

2822
      if (pilots==0) {
2823 2824 2825 2826 2827 2828 2829 2830
        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch1_128[2],rxdataF128[2]);
        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch1_128[2],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[2]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
2831 2832
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift1);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift1);
2833 2834 2835 2836
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);

        rxdataF_comp1_128[2] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
2837 2838 2839
          //   print_shorts("rx:",rxdataF128+2);
           //  print_shorts("ch:",dl_ch1_128+2);
             //         print_shorts("pack:",rxdataF_comp1_128+2);
2840 2841 2842 2843 2844 2845 2846 2847 2848 2849

        dl_ch0_128+=3;
        dl_ch1_128+=3;
        dl_ch_mag0_128+=3;
        dl_ch_mag1_128+=3;
        dl_ch_mag0_128b+=3;
        dl_ch_mag1_128b+=3;
        rxdataF128+=3;
        rxdataF_comp0_128+=3;
        rxdataF_comp1_128+=3;
2850 2851
      }
      else {
2852 2853 2854 2855 2856 2857 2858 2859 2860
        dl_ch0_128+=2;
        dl_ch1_128+=2;
        dl_ch_mag0_128+=2;
        dl_ch_mag1_128+=2;
        dl_ch_mag0_128b+=2;
        dl_ch_mag1_128b+=2;
        rxdataF128+=2;
        rxdataF_comp0_128+=2;
        rxdataF_comp1_128+=2;
2861
      }
2862

2863
    } // rb loop
2864
    Nre = (pilots==0) ? 12 : 8;
2865

2866
    precoded_signal_strength0 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
2867
                                                        (nb_rb*Nre))*rx_power_correction) - (measurements->n0_power[aarx]));
2868

2869
    precoded_signal_strength1 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx+2][symbol*frame_parms->N_RB_DL*Nre],
2870
                                                        (nb_rb*Nre))*rx_power_correction) - (measurements->n0_power[aarx]));
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  } // rx_antennas
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  measurements->precoded_cqi_dB[eNB_id][0] = dB_fixed2(precoded_signal_strength0,measurements->n0_power_tot);
  measurements->precoded_cqi_dB[eNB_id][1] = dB_fixed2(precoded_signal_strength1,measurements->n0_power_tot);
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2876
 // printf("eNB_id %d, symbol %d: precoded CQI %d dB\n",eNB_id,symbol,
2877
     //  measurements->precoded_cqi_dB[eNB_id][0]);
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2879
  _mm_empty();
2880
  _m_empty();
2881

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  #elif defined(__arm__)
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  unsigned short rb,Nre;
  unsigned char aarx,symbol_mod,pilots=0;
2886
  int precoded_signal_strength0=0,precoded_signal_strength1=0, rx_power_correction;
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  int16x4_t *dl_ch0_128,*rxdataF128;
  int16x4_t *dl_ch1_128;
  int16x8_t *dl_ch0_128b,*dl_ch1_128b;
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  int32x4_t mmtmpD0,mmtmpD1,mmtmpD0b,mmtmpD1b;
  int16x8_t *dl_ch_mag0_128,*dl_ch_mag0_128b,*dl_ch_mag1_128,*dl_ch_mag1_128b,mmtmpD2,mmtmpD3,mmtmpD4,*rxdataF_comp0_128,*rxdataF_comp1_128;
  int16x8_t QAM_amp0_128,QAM_amp0_128b,QAM_amp1_128,QAM_amp1_128b;
  int32x4_t output_shift128 = vmovq_n_s32(-(int32_t)output_shift);
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  int **rxdataF_ext           = pdsch_vars->rxdataF_ext;
  int **dl_ch_estimates_ext   = pdsch_vars->dl_ch_estimates_ext;
  int **dl_ch_mag0            = pdsch_vars->dl_ch_mag0;
2899
  int **dl_ch_mag1            = pdsch_vars->dl_ch_mag1[harq_pid][round];
2900
  int **dl_ch_magb0           = pdsch_vars->dl_ch_magb0;
2901
  int **dl_ch_magb1           = pdsch_vars->dl_ch_magb1[harq_pid][round];
2902
  int **rxdataF_comp0         = pdsch_vars->rxdataF_comp0;
2903
  int **rxdataF_comp1         = pdsch_vars->rxdataF_comp1[harq_pid][round];
2904

2905
  int16_t conj[4]__attribute__((aligned(16))) = {1,-1,1,-1};
2906

2907
  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
2908

2909
  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
2910
    if (frame_parms->nb_antenna_ports_eNB==1) // 10 out of 12 so don't reduce size
2911
      { nb_rb=1+(5*nb_rb/6); }
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    else
      { pilots=1; }
2915
  }
2916

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2917
  rx_power_correction=1;
2918

2919
  if (mod_order0 == 4) {
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    QAM_amp0_128  = vmovq_n_s16(QAM16_n1);  // 2/sqrt(10)
    QAM_amp0_128b = vmovq_n_s16(0);
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2923
  } else if (mod_order0 == 6) {
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    QAM_amp0_128  = vmovq_n_s16(QAM64_n1); //
    QAM_amp0_128b = vmovq_n_s16(QAM64_n2);
2926
  }
2927

2928
  if (mod_order1 == 4) {
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    QAM_amp1_128  = vmovq_n_s16(QAM16_n1);  // 2/sqrt(10)
    QAM_amp1_128b = vmovq_n_s16(0);
2931

2932
  } else if (mod_order1 == 6) {
2933 2934
    QAM_amp1_128  = vmovq_n_s16(QAM64_n1); //
    QAM_amp1_128b = vmovq_n_s16(QAM64_n2);
2935
  }
2936

2937
  //    printf("comp: rxdataF_comp %p, symbol %d\n",rxdataF_comp[0],symbol);
2938

2939
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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    dl_ch0_128          = (int16x4_t*)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch1_128          = (int16x4_t*)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch0_128b          = (int16x8_t*)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch1_128b          = (int16x8_t*)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
2947
    dl_ch_mag0_128      = (int16x8_t*)&dl_ch_mag0[aarx][symbol*frame_parms->N_RB_DL*12];
2948
    dl_ch_mag0_128b     = (int16x8_t*)&dl_ch_magb0[aarx][symbol*frame_parms->N_RB_DL*12];
2949
    dl_ch_mag1_128      = (int16x8_t*)&dl_ch_mag1[aarx][symbol*frame_parms->N_RB_DL*12];
2950
    dl_ch_mag1_128b     = (int16x8_t*)&dl_ch_magb1[aarx][symbol*frame_parms->N_RB_DL*12];
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    rxdataF128          = (int16x4_t*)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    rxdataF_comp0_128   = (int16x8_t*)&rxdataF_comp0[aarx][symbol*frame_parms->N_RB_DL*12];
    rxdataF_comp1_128   = (int16x8_t*)&rxdataF_comp1[aarx][symbol*frame_parms->N_RB_DL*12];
2954

2955
    for (rb=0; rb<nb_rb; rb++) {
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2956 2957 2958 2959
      // combine TX channels using precoder from pmi
      if (mimo_mode==LARGE_CDD) {
        prec2A_TM3_128(&dl_ch0_128[0],&dl_ch1_128[0]);
        prec2A_TM3_128(&dl_ch0_128[1],&dl_ch1_128[1]);
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2961

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2962
        if (pilots==0) {
2963
          prec2A_TM3_128(&dl_ch0_128[2],&dl_ch1_128[2]);
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        }
      }
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1) {
2967 2968 2969
        prec2A_TM4_128(0,&dl_ch0_128[0],&dl_ch1_128[0]);
        prec2A_TM4_128(0,&dl_ch0_128[1],&dl_ch1_128[1]);

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2970
        if (pilots==0) {
2971
          prec2A_TM4_128(0,&dl_ch0_128[2],&dl_ch1_128[2]);
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2972
        }
2973
      }
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      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODINGj) {
        prec2A_TM4_128(1,&dl_ch0_128[0],&dl_ch1_128[0]);
        prec2A_TM4_128(1,&dl_ch0_128[1],&dl_ch1_128[1]);
2977

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2978
        if (pilots==0) {
2979
          prec2A_TM4_128(1,&dl_ch0_128[2],&dl_ch1_128[2]);
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        }
      }
      else {
        LOG_E(PHY,"Unknown MIMO mode\n");
        return;
2985 2986 2987 2988
      }


      if (mod_order0>2) {
2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023
        // get channel amplitude if not QPSK
        mmtmpD0 = vmull_s16(dl_ch0_128[0], dl_ch0_128[0]);
        // mmtmpD0 = [ch0*ch0,ch1*ch1,ch2*ch2,ch3*ch3];
        mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
        // mmtmpD0 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3]>>output_shift128 on 32-bits
        mmtmpD1 = vmull_s16(dl_ch0_128[1], dl_ch0_128[1]);
        mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
        mmtmpD2 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
        // mmtmpD2 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3,ch4*ch4 + ch5*ch5,ch4*ch4 + ch5*ch5,ch6*ch6 + ch7*ch7,ch6*ch6 + ch7*ch7]>>output_shift128 on 16-bits
        mmtmpD0 = vmull_s16(dl_ch0_128[2], dl_ch0_128[2]);
        mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
        mmtmpD1 = vmull_s16(dl_ch0_128[3], dl_ch0_128[3]);
        mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
        mmtmpD3 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));

        if (pilots==0) {
          mmtmpD0 = vmull_s16(dl_ch0_128[4], dl_ch0_128[4]);
          mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
          mmtmpD1 = vmull_s16(dl_ch0_128[5], dl_ch0_128[5]);
          mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
          mmtmpD4 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));


        }

        dl_ch_mag0_128b[0] = vqdmulhq_s16(mmtmpD2,QAM_amp0_128b);
        dl_ch_mag0_128b[1] = vqdmulhq_s16(mmtmpD3,QAM_amp0_128b);
        dl_ch_mag0_128[0] = vqdmulhq_s16(mmtmpD2,QAM_amp0_128);
        dl_ch_mag0_128[1] = vqdmulhq_s16(mmtmpD3,QAM_amp0_128);


        if (pilots==0) {
          dl_ch_mag0_128b[2] = vqdmulhq_s16(mmtmpD4,QAM_amp0_128b);
          dl_ch_mag0_128[2]  = vqdmulhq_s16(mmtmpD4,QAM_amp0_128);
        }
3024 3025 3026
      }

      if (mod_order1>2) {
3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061
        // get channel amplitude if not QPSK
        mmtmpD0 = vmull_s16(dl_ch1_128[0], dl_ch1_128[0]);
        // mmtmpD0 = [ch0*ch0,ch1*ch1,ch2*ch2,ch3*ch3];
        mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
        // mmtmpD0 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3]>>output_shift128 on 32-bits
        mmtmpD1 = vmull_s16(dl_ch1_128[1], dl_ch1_128[1]);
        mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
        mmtmpD2 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
        // mmtmpD2 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3,ch4*ch4 + ch5*ch5,ch4*ch4 + ch5*ch5,ch6*ch6 + ch7*ch7,ch6*ch6 + ch7*ch7]>>output_shift128 on 16-bits
        mmtmpD0 = vmull_s16(dl_ch1_128[2], dl_ch1_128[2]);
        mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
        mmtmpD1 = vmull_s16(dl_ch1_128[3], dl_ch1_128[3]);
        mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
        mmtmpD3 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));

        if (pilots==0) {
          mmtmpD0 = vmull_s16(dl_ch1_128[4], dl_ch1_128[4]);
          mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
          mmtmpD1 = vmull_s16(dl_ch1_128[5], dl_ch1_128[5]);
          mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
          mmtmpD4 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));


        }

        dl_ch_mag1_128b[0] = vqdmulhq_s16(mmtmpD2,QAM_amp1_128b);
        dl_ch_mag1_128b[1] = vqdmulhq_s16(mmtmpD3,QAM_amp1_128b);
        dl_ch_mag1_128[0] = vqdmulhq_s16(mmtmpD2,QAM_amp1_128);
        dl_ch_mag1_128[1] = vqdmulhq_s16(mmtmpD3,QAM_amp1_128);


        if (pilots==0) {
          dl_ch_mag1_128b[2] = vqdmulhq_s16(mmtmpD4,QAM_amp1_128b);
          dl_ch_mag1_128[2]  = vqdmulhq_s16(mmtmpD4,QAM_amp1_128);
        }
3062
      }
3063

3064
      mmtmpD0 = vmull_s16(dl_ch0_128[0], rxdataF128[0]);
3065
      //mmtmpD0 = [Re(ch[0])Re(rx[0]) Im(ch[0])Im(ch[0]) Re(ch[1])Re(rx[1]) Im(ch[1])Im(ch[1])]
3066
      mmtmpD1 = vmull_s16(dl_ch0_128[1], rxdataF128[1]);
3067
      //mmtmpD1 = [Re(ch[2])Re(rx[2]) Im(ch[2])Im(ch[2]) Re(ch[3])Re(rx[3]) Im(ch[3])Im(ch[3])]
3068
      mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
3069
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
3070 3071
      //mmtmpD0 = [Re(ch[0])Re(rx[0])+Im(ch[0])Im(ch[0]) Re(ch[1])Re(rx[1])+Im(ch[1])Im(ch[1]) Re(ch[2])Re(rx[2])+Im(ch[2])Im(ch[2]) Re(ch[3])Re(rx[3])+Im(ch[3])Im(ch[3])]

3072
      mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[0],*(int16x4_t*)conj)), rxdataF128[0]);
3073
      //mmtmpD0 = [-Im(ch[0])Re(rx[0]) Re(ch[0])Im(rx[0]) -Im(ch[1])Re(rx[1]) Re(ch[1])Im(rx[1])]
3074
      mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[1],*(int16x4_t*)conj)), rxdataF128[1]);
3075
      //mmtmpD0 = [-Im(ch[2])Re(rx[2]) Re(ch[2])Im(rx[2]) -Im(ch[3])Re(rx[3]) Re(ch[3])Im(rx[3])]
3076
      mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
3077
                             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
3078
      //mmtmpD1 = [-Im(ch[0])Re(rx[0])+Re(ch[0])Im(rx[0]) -Im(ch[1])Re(rx[1])+Re(ch[1])Im(rx[1]) -Im(ch[2])Re(rx[2])+Re(ch[2])Im(rx[2]) -Im(ch[3])Re(rx[3])+Re(ch[3])Im(rx[3])]
3079

3080 3081 3082
      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp0_128[0] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
3083

3084 3085 3086
      mmtmpD0 = vmull_s16(dl_ch0_128[2], rxdataF128[2]);
      mmtmpD1 = vmull_s16(dl_ch0_128[3], rxdataF128[3]);
      mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
3087
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
3088

3089 3090 3091
      mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[2],*(int16x4_t*)conj)), rxdataF128[2]);
      mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[3],*(int16x4_t*)conj)), rxdataF128[3]);
      mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
3092
                             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
3093

3094 3095 3096
      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp0_128[1] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
3097

3098 3099 3100 3101
      // second stream
      mmtmpD0 = vmull_s16(dl_ch1_128[0], rxdataF128[0]);
      mmtmpD1 = vmull_s16(dl_ch1_128[1], rxdataF128[1]);
      mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
3102
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
3103
      mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[0],*(int16x4_t*)conj)), rxdataF128[0]);
3104

3105 3106 3107
      mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[1],*(int16x4_t*)conj)), rxdataF128[1]);
      //mmtmpD0 = [-Im(ch[2])Re(rx[2]) Re(ch[2])Im(rx[2]) -Im(ch[3])Re(rx[3]) Re(ch[3])Im(rx[3])]
      mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
3108
                             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
3109
      //mmtmpD1 = [-Im(ch[0])Re(rx[0])+Re(ch[0])Im(rx[0]) -Im(ch[1])Re(rx[1])+Re(ch[1])Im(rx[1]) -Im(ch[2])Re(rx[2])+Re(ch[2])Im(rx[2]) -Im(ch[3])Re(rx[3])+Re(ch[3])Im(rx[3])]
3110

3111 3112 3113
      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp1_128[0] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
3114

3115 3116 3117
      mmtmpD0 = vmull_s16(dl_ch1_128[2], rxdataF128[2]);
      mmtmpD1 = vmull_s16(dl_ch1_128[3], rxdataF128[3]);
      mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
3118
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
3119

3120 3121 3122
      mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[2],*(int16x4_t*)conj)), rxdataF128[2]);
      mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[3],*(int16x4_t*)conj)), rxdataF128[3]);
      mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
3123
                             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
3124

3125 3126 3127
      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp1_128[1] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
3128

3129
      if (pilots==0) {
3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157
        mmtmpD0 = vmull_s16(dl_ch0_128[4], rxdataF128[4]);
        mmtmpD1 = vmull_s16(dl_ch0_128[5], rxdataF128[5]);
        mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
                               vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));

        mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[4],*(int16x4_t*)conj)), rxdataF128[4]);
        mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[5],*(int16x4_t*)conj)), rxdataF128[5]);
        mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
                               vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));


        mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
        mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
        rxdataF_comp0_128[2] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
        mmtmpD0 = vmull_s16(dl_ch1_128[4], rxdataF128[4]);
        mmtmpD1 = vmull_s16(dl_ch1_128[5], rxdataF128[5]);
        mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
                               vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));

        mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch1_128[4],*(int16x4_t*)conj)), rxdataF128[4]);
        mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch1_128[5],*(int16x4_t*)conj)), rxdataF128[5]);
        mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
                               vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));


        mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
        mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
        rxdataF_comp1_128[2] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
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      }
    }
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3163
    Nre = (pilots==0) ? 12 : 8;
3164

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    // rx_antennas
  }
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3169
  Nre = (pilots==0) ? 12 : 8;
3170

3171
  precoded_signal_strength0 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
3172
                                                        (nb_rb*Nre))*rx_power_correction) - (measurements->n0_power[aarx]));
3173
  precoded_signal_strength1 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx+2][symbol*frame_parms->N_RB_DL*Nre],
3174
                                                        (nb_rb*Nre))*rx_power_correction) - (measurements->n0_power[aarx]));
3175

3176 3177
  measurements->precoded_cqi_dB[eNB_id][0] = dB_fixed2(precoded_signal_strength0,measurements->n0_power_tot);
  measurements->precoded_cqi_dB[eNB_id][1] = dB_fixed2(precoded_signal_strength1,measurements->n0_power_tot);
3178

3179
#endif
3180
}
3181

3182

3183 3184 3185 3186 3187 3188
void dlsch_dual_stream_correlation(LTE_DL_FRAME_PARMS *frame_parms,
                                   unsigned char symbol,
                                   unsigned short nb_rb,
                                   int **dl_ch_estimates_ext,
                                   int **dl_ch_estimates_ext_i,
                                   int **dl_ch_rho_ext,
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                                   unsigned char output_shift)
{

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#if defined(__x86_64__)||defined(__i386__)

3194
  unsigned short rb;
3195
  __m128i *dl_ch128,*dl_ch128i,*dl_ch_rho128,mmtmpD0,mmtmpD1,mmtmpD2,mmtmpD3;
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  unsigned char aarx,symbol_mod,pilots=0;
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  //    printf("dlsch_dual_stream_correlation: symbol %d\n",symbol);

  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
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  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
    pilots=1;
  }
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  //  printf("Dual stream correlation (%p)\n",dl_ch_estimates_ext_i);

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  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {

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3212
 //printf ("antenna %d", aarx);
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    dl_ch128          = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
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    if (dl_ch_estimates_ext_i == NULL) // TM3/4
      dl_ch128i         = (__m128i *)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
    else
      dl_ch128i         = (__m128i *)&dl_ch_estimates_ext_i[aarx][symbol*frame_parms->N_RB_DL*12];
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    dl_ch_rho128      = (__m128i *)&dl_ch_rho_ext[aarx][symbol*frame_parms->N_RB_DL*12];
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    for (rb=0; rb<nb_rb; rb++) {
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      // multiply by conjugated channel
      mmtmpD0 = _mm_madd_epi16(dl_ch128[0],dl_ch128i[0]);
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      //      print_ints("re",&mmtmpD0);
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      // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
      mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[0],_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]);
      mmtmpD1 = _mm_madd_epi16(mmtmpD1,dl_ch128i[0]);
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      //      print_ints("im",&mmtmpD1);
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      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
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      //      print_ints("re(shift)",&mmtmpD0);
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      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
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      //      print_ints("im(shift)",&mmtmpD1);
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      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
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      //      print_ints("c0",&mmtmpD2);
      //      print_ints("c1",&mmtmpD3);
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      dl_ch_rho128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
3243
    // print_shorts("rho 0:",dl_ch_rho128);
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      // multiply by conjugated channel
      mmtmpD0 = _mm_madd_epi16(dl_ch128[1],dl_ch128i[1]);
      // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
      mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[1],_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
      mmtmpD1 = _mm_madd_epi16(mmtmpD1,dl_ch128i[1]);
      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
      dl_ch_rho128[1] =_mm_packs_epi32(mmtmpD2,mmtmpD3);
3257

3258 3259

      if (pilots==0) {
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3260

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        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch128[2],dl_ch128i[2]);
        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[2],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,dl_ch128i[2]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
        dl_ch_rho128[2] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
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       dl_ch128+=3;
        dl_ch128i+=3;
        dl_ch_rho128+=3;
      } else {

        dl_ch128+=2;
        dl_ch128i+=2;
        dl_ch_rho128+=2;
      }
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    }
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3286
  }
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  _mm_empty();
  _m_empty();

#elif defined(__arm__)

#endif
}

3296

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void dlsch_detection_mrc(LTE_DL_FRAME_PARMS *frame_parms,
                         int **rxdataF_comp,
                         int **rxdataF_comp_i,
                         int **rho,
                         int **rho_i,
                         int **dl_ch_mag,
                         int **dl_ch_magb,
                         int **dl_ch_mag_i,
                         int **dl_ch_magb_i,
                         unsigned char symbol,
                         unsigned short nb_rb,
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                         unsigned char dual_stream_UE)
{

3311 3312
#if defined(__x86_64__)||defined(__i386__)

3313 3314
  unsigned char aatx;
  int i;
3315
  __m128i *rxdataF_comp128_0,*rxdataF_comp128_1,*rxdataF_comp128_i0,*rxdataF_comp128_i1,*dl_ch_mag128_0,*dl_ch_mag128_1,*dl_ch_mag128_0b,*dl_ch_mag128_1b,*rho128_0,*rho128_1,*rho128_i0,*rho128_i1,
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    *dl_ch_mag128_i0,*dl_ch_mag128_i1,*dl_ch_mag128_i0b,*dl_ch_mag128_i1b;
3317 3318 3319

  if (frame_parms->nb_antennas_rx>1) {

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3320
    for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) {
3321 3322 3323 3324 3325 3326 3327

      rxdataF_comp128_0   = (__m128i *)&rxdataF_comp[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];
      rxdataF_comp128_1   = (__m128i *)&rxdataF_comp[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_0      = (__m128i *)&dl_ch_mag[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_1      = (__m128i *)&dl_ch_mag[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_0b     = (__m128i *)&dl_ch_magb[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_1b     = (__m128i *)&dl_ch_magb[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];
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      // MRC on each re of rb, both on MF output and magnitude (for 16QAM/64QAM llr computation)
      for (i=0;i<nb_rb*3;i++) {
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        rxdataF_comp128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rxdataF_comp128_0[i],1),_mm_srai_epi16(rxdataF_comp128_1[i],1));
        dl_ch_mag128_0[i]    = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_0[i],1),_mm_srai_epi16(dl_ch_mag128_1[i],1));
        dl_ch_mag128_0b[i]   = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_0b[i],1),_mm_srai_epi16(dl_ch_mag128_1b[i],1));
3334
          //       print_shorts("mrc comp0:",&rxdataF_comp128_0[i]);
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        //       print_shorts("mrc mag0:",&dl_ch_mag128_0[i]);
        //       print_shorts("mrc mag0b:",&dl_ch_mag128_0b[i]);
3337
        //      print_shorts("mrc rho1:",&rho128_1[i]);
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      }
    }

    if (rho) {
      rho128_0 = (__m128i *) &rho[0][symbol*frame_parms->N_RB_DL*12];
      rho128_1 = (__m128i *) &rho[1][symbol*frame_parms->N_RB_DL*12];
      for (i=0;i<nb_rb*3;i++) {
3346 3347
        //      print_shorts("mrc rho0:",&rho128_0[i]);
        //      print_shorts("mrc rho1:",&rho128_1[i]);
3348
        rho128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_0[i],1),_mm_srai_epi16(rho128_1[i],1));
3349 3350 3351 3352 3353 3354 3355
      }
    }


    if (dual_stream_UE == 1) {
      rho128_i0 = (__m128i *) &rho_i[0][symbol*frame_parms->N_RB_DL*12];
      rho128_i1 = (__m128i *) &rho_i[1][symbol*frame_parms->N_RB_DL*12];
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      rxdataF_comp128_i0   = (__m128i *)&rxdataF_comp_i[0][symbol*frame_parms->N_RB_DL*12];
      rxdataF_comp128_i1   = (__m128i *)&rxdataF_comp_i[1][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_i0      = (__m128i *)&dl_ch_mag_i[0][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_i1      = (__m128i *)&dl_ch_mag_i[1][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_i0b     = (__m128i *)&dl_ch_magb_i[0][symbol*frame_parms->N_RB_DL*12];
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      dl_ch_mag128_i1b     = (__m128i *)&dl_ch_magb_i[1][symbol*frame_parms->N_RB_DL*12];
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      for (i=0; i<nb_rb*3; i++) {
        rxdataF_comp128_i0[i] = _mm_adds_epi16(_mm_srai_epi16(rxdataF_comp128_i0[i],1),_mm_srai_epi16(rxdataF_comp128_i1[i],1));
        rho128_i0[i]           = _mm_adds_epi16(_mm_srai_epi16(rho128_i0[i],1),_mm_srai_epi16(rho128_i1[i],1));

        dl_ch_mag128_i0[i]    = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_i0[i],1),_mm_srai_epi16(dl_ch_mag128_i1[i],1));
        dl_ch_mag128_i0b[i]    = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_i0b[i],1),_mm_srai_epi16(dl_ch_mag128_i1b[i],1));
3369 3370 3371
      }
    }
  }
3372

3373 3374
  _mm_empty();
  _m_empty();
3375 3376 3377

#elif defined(__arm__)

3378 3379 3380 3381 3382 3383
  unsigned char aatx;
  int i;
  int16x8_t *rxdataF_comp128_0,*rxdataF_comp128_1,*rxdataF_comp128_i0,*rxdataF_comp128_i1,*dl_ch_mag128_0,*dl_ch_mag128_1,*dl_ch_mag128_0b,*dl_ch_mag128_1b,*rho128_0,*rho128_1,*rho128_i0,*rho128_i1,*dl_ch_mag128_i0,*dl_ch_mag128_i1,*dl_ch_mag128_i0b,*dl_ch_mag128_i1b;

  if (frame_parms->nb_antennas_rx>1) {

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    for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) {
3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433

      rxdataF_comp128_0   = (int16x8_t *)&rxdataF_comp[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];
      rxdataF_comp128_1   = (int16x8_t *)&rxdataF_comp[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_0      = (int16x8_t *)&dl_ch_mag[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_1      = (int16x8_t *)&dl_ch_mag[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_0b     = (int16x8_t *)&dl_ch_magb[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_1b     = (int16x8_t *)&dl_ch_magb[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];

      // MRC on each re of rb, both on MF output and magnitude (for 16QAM/64QAM llr computation)
      for (i=0; i<nb_rb*3; i++) {
        rxdataF_comp128_0[i] = vhaddq_s16(rxdataF_comp128_0[i],rxdataF_comp128_1[i]);
        dl_ch_mag128_0[i]    = vhaddq_s16(dl_ch_mag128_0[i],dl_ch_mag128_1[i]);
        dl_ch_mag128_0b[i]   = vhaddq_s16(dl_ch_mag128_0b[i],dl_ch_mag128_1b[i]);
      }
    }

    if (rho) {
      rho128_0 = (int16x8_t *) &rho[0][symbol*frame_parms->N_RB_DL*12];
      rho128_1 = (int16x8_t *) &rho[1][symbol*frame_parms->N_RB_DL*12];

      for (i=0; i<nb_rb*3; i++) {
        //  print_shorts("mrc rho0:",&rho128_0[i]);
        //  print_shorts("mrc rho1:",&rho128_1[i]);
        rho128_0[i] = vhaddq_s16(rho128_0[i],rho128_1[i]);
      }
    }


    if (dual_stream_UE == 1) {
      rho128_i0 = (int16x8_t *) &rho_i[0][symbol*frame_parms->N_RB_DL*12];
      rho128_i1 = (int16x8_t *) &rho_i[1][symbol*frame_parms->N_RB_DL*12];
      rxdataF_comp128_i0   = (int16x8_t *)&rxdataF_comp_i[0][symbol*frame_parms->N_RB_DL*12];
      rxdataF_comp128_i1   = (int16x8_t *)&rxdataF_comp_i[1][symbol*frame_parms->N_RB_DL*12];

      dl_ch_mag128_i0      = (int16x8_t *)&dl_ch_mag_i[0][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_i1      = (int16x8_t *)&dl_ch_mag_i[1][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_i0b     = (int16x8_t *)&dl_ch_magb_i[0][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_i1b     = (int16x8_t *)&dl_ch_magb_i[1][symbol*frame_parms->N_RB_DL*12];

      for (i=0; i<nb_rb*3; i++) {
        rxdataF_comp128_i0[i] = vhaddq_s16(rxdataF_comp128_i0[i],rxdataF_comp128_i1[i]);
        rho128_i0[i]          = vhaddq_s16(rho128_i0[i],rho128_i1[i]);

        dl_ch_mag128_i0[i]    = vhaddq_s16(dl_ch_mag128_i0[i],dl_ch_mag128_i1[i]);
        dl_ch_mag128_i0b[i]   = vhaddq_s16(dl_ch_mag128_i0b[i],dl_ch_mag128_i1b[i]);
      }
    }
  }

3434
#endif
3435 3436
}

3437
void dlsch_detection_mrc_TM34(LTE_DL_FRAME_PARMS *frame_parms,
3438
                              LTE_UE_PDSCH *pdsch_vars,
3439 3440 3441 3442 3443
                              int harq_pid,
                              int round,
                              unsigned char symbol,
                              unsigned short nb_rb,
                              unsigned char dual_stream_UE) {
3444

3445 3446 3447
  int i;
  __m128i *rxdataF_comp128_0,*rxdataF_comp128_1,*rxdataF_comp128_i0,*rxdataF_comp128_i1,*dl_ch_mag128_0,*dl_ch_mag128_1,*dl_ch_mag128_0b,*dl_ch_mag128_1b,*rho128_0,*rho128_1,*rho128_i0,*rho128_i1,*dl_ch_mag128_i0,*dl_ch_mag128_i1,*dl_ch_mag128_i0b,*dl_ch_mag128_i1b;

3448 3449 3450 3451 3452 3453 3454 3455
  int **rxdataF_comp0           = pdsch_vars->rxdataF_comp0;
  int **rxdataF_comp1           = pdsch_vars->rxdataF_comp1[harq_pid][round];
  int **dl_ch_rho_ext           = pdsch_vars->dl_ch_rho_ext[harq_pid][round]; //for second stream
  int **dl_ch_rho2_ext          = pdsch_vars->dl_ch_rho2_ext;
  int **dl_ch_mag0              = pdsch_vars->dl_ch_mag0;
  int **dl_ch_mag1              = pdsch_vars->dl_ch_mag1[harq_pid][round];
  int **dl_ch_magb0             = pdsch_vars->dl_ch_magb0;
  int **dl_ch_magb1             = pdsch_vars->dl_ch_magb1[harq_pid][round];
3456

3457
  if (frame_parms->nb_antennas_rx>1) {
3458 3459 3460 3461 3462 3463 3464

      rxdataF_comp128_0   = (__m128i *)&rxdataF_comp0[0][symbol*frame_parms->N_RB_DL*12];
      rxdataF_comp128_1   = (__m128i *)&rxdataF_comp0[1][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_0      = (__m128i *)&dl_ch_mag0[0][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_1      = (__m128i *)&dl_ch_mag0[1][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_0b     = (__m128i *)&dl_ch_magb0[0][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_1b     = (__m128i *)&dl_ch_magb0[1][symbol*frame_parms->N_RB_DL*12];
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      // MRC on each re of rb, both on MF output and magnitude (for 16QAM/64QAM llr computation)
      for (i=0;i<nb_rb*3;i++) {
        rxdataF_comp128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rxdataF_comp128_0[i],1),_mm_srai_epi16(rxdataF_comp128_1[i],1));
        dl_ch_mag128_0[i]    = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_0[i],1),_mm_srai_epi16(dl_ch_mag128_1[i],1));
        dl_ch_mag128_0b[i]   = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_0b[i],1),_mm_srai_epi16(dl_ch_mag128_1b[i],1));
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        // print_shorts("mrc compens0:",&rxdataF_comp128_0[i]);
        // print_shorts("mrc mag128_0:",&dl_ch_mag128_0[i]);
        // print_shorts("mrc mag128_0b:",&dl_ch_mag128_0b[i]);
3475
      }    }
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   // if (rho) {
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      rho128_0 = (__m128i *) &dl_ch_rho2_ext[0][symbol*frame_parms->N_RB_DL*12];
      rho128_1 = (__m128i *) &dl_ch_rho2_ext[1][symbol*frame_parms->N_RB_DL*12];
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      for (i=0;i<nb_rb*3;i++) {
           //  print_shorts("mrc rho0:",&rho128_0[i]);
            //  print_shorts("mrc rho1:",&rho128_1[i]);
        rho128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_0[i],1),_mm_srai_epi16(rho128_1[i],1));
      }
   //}


    if (dual_stream_UE == 1) {
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      rho128_i0 = (__m128i *) &dl_ch_rho_ext[0][symbol*frame_parms->N_RB_DL*12];
      rho128_i1 = (__m128i *) &dl_ch_rho_ext[1][symbol*frame_parms->N_RB_DL*12];
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      rxdataF_comp128_i0   = (__m128i *)&rxdataF_comp1[0][symbol*frame_parms->N_RB_DL*12];
      rxdataF_comp128_i1   = (__m128i *)&rxdataF_comp1[1][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_i0      = (__m128i *)&dl_ch_mag1[0][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_i1      = (__m128i *)&dl_ch_mag1[1][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_i0b     = (__m128i *)&dl_ch_magb1[0][symbol*frame_parms->N_RB_DL*12];
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      dl_ch_mag128_i1b     = (__m128i *)&dl_ch_magb1[1][symbol*frame_parms->N_RB_DL*12];
      for (i=0;i<nb_rb*3;i++) {
        rxdataF_comp128_i0[i] = _mm_adds_epi16(_mm_srai_epi16(rxdataF_comp128_i0[i],1),_mm_srai_epi16(rxdataF_comp128_i1[i],1));
        rho128_i0[i]           = _mm_adds_epi16(_mm_srai_epi16(rho128_i0[i],1),_mm_srai_epi16(rho128_i1[i],1));
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        dl_ch_mag128_i0[i]    = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_i0[i],1),_mm_srai_epi16(dl_ch_mag128_i1[i],1));
        dl_ch_mag128_i0b[i]    = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_i0b[i],1),_mm_srai_epi16(dl_ch_mag128_i1b[i],1));
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        //print_shorts("mrc compens1:",&rxdataF_comp128_i0[i]);
        //print_shorts("mrc mag128_i0:",&dl_ch_mag128_i0[i]);
        //print_shorts("mrc mag128_i0b:",&dl_ch_mag128_i0b[i]);
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      }
    }
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  _mm_empty();
  _m_empty();
}

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void dlsch_scale_channel(int **dl_ch_estimates_ext,
                         LTE_DL_FRAME_PARMS *frame_parms,
                         LTE_UE_DLSCH_t **dlsch_ue,
3518
                         uint8_t symbol,
3519 3520
                         unsigned short nb_rb)
{
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#if defined(__x86_64__)||defined(__i386__)

3524 3525
  short rb, ch_amp;
  unsigned char aatx,aarx,pilots=0,symbol_mod;
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  __m128i *dl_ch128, ch_amp128;

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  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
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    if (frame_parms->nb_antenna_ports_eNB==1) // 10 out of 12 so don't reduce size
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      nb_rb=1+(5*nb_rb/6);
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    else
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      pilots=1;
  }

  // Determine scaling amplitude based the symbol

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  ch_amp = ((pilots) ? (dlsch_ue[0]->sqrt_rho_b) : (dlsch_ue[0]->sqrt_rho_a));
3540

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  LOG_D(PHY,"Scaling PDSCH Chest in OFDM symbol %d by %d, pilots %d nb_rb %d NCP %d symbol %d\n",symbol_mod,ch_amp,pilots,nb_rb,frame_parms->Ncp,symbol);
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   // printf("Scaling PDSCH Chest in OFDM symbol %d by %d\n",symbol_mod,ch_amp);
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  ch_amp128 = _mm_set1_epi16(ch_amp); // Q3.13

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  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) {
3547
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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      dl_ch128=(__m128i *)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
3550

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      for (rb=0;rb<nb_rb;rb++) {
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        dl_ch128[0] = _mm_mulhi_epi16(dl_ch128[0],ch_amp128);
        dl_ch128[0] = _mm_slli_epi16(dl_ch128[0],3);

        dl_ch128[1] = _mm_mulhi_epi16(dl_ch128[1],ch_amp128);
        dl_ch128[1] = _mm_slli_epi16(dl_ch128[1],3);

        if (pilots) {
          dl_ch128+=2;
        } else {
          dl_ch128[2] = _mm_mulhi_epi16(dl_ch128[2],ch_amp128);
          dl_ch128[2] = _mm_slli_epi16(dl_ch128[2],3);
          dl_ch128+=3;
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        }
      }
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    }
  }
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#elif defined(__arm__)

#endif
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}

3576

3577 3578
//compute average channel_level on each (TX,RX) antenna pair
void dlsch_channel_level(int **dl_ch_estimates_ext,
3579
                         LTE_DL_FRAME_PARMS *frame_parms,
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                         int32_t *avg,
3581 3582 3583
                         uint8_t symbol,
                         unsigned short nb_rb)
{
3584

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#if defined(__x86_64__)||defined(__i386__)

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  short rb;
  unsigned char aatx,aarx,nre=12,symbol_mod;
3589
  __m128i *dl_ch128, avg128D;
3590

3591 3592
  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

3593
  if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1))
3594
    nre=8;
3595
  else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB==1))
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    nre=10;
  else
    nre=12;

3600
  //nb_rb*nre = y * 2^x
3601
  int16_t x = factor2(nb_rb*nre);
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3602
  int16_t y = (nb_rb*nre)>>x;
3603
  //printf("nb_rb*nre = %d = %d * 2^(%d)\n",nb_rb*nre,y,x);
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3604

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  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++)
3606
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
3607
      //clear average level
3608
      avg128D = _mm_setzero_si128();
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      // 5 is always a symbol with no pilots for both normal and extended prefix

      dl_ch128=(__m128i *)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];

      for (rb=0;rb<nb_rb;rb++) {
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        //      printf("rb %d : ",rb);
        //      print_shorts("ch",&dl_ch128[0]);
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	avg128D = _mm_add_epi32(avg128D,_mm_srai_epi16(_mm_madd_epi16(dl_ch128[0],dl_ch128[0]),x));
	avg128D = _mm_add_epi32(avg128D,_mm_srai_epi16(_mm_madd_epi16(dl_ch128[1],dl_ch128[1]),x));

        //avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[0],_mm_srai_epi16(_mm_mulhi_epi16(dl_ch128[0], coeff128),15)));
        //avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[1],_mm_srai_epi16(_mm_mulhi_epi16(dl_ch128[1], coeff128),15)));
3621

3622
        if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) {
3623
          dl_ch128+=2;
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        }
        else {
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	  avg128D = _mm_add_epi32(avg128D,_mm_srai_epi16(_mm_madd_epi16(dl_ch128[2],dl_ch128[2]),x));
          //avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[2],_mm_srai_epi16(_mm_mulhi_epi16(dl_ch128[2], coeff128),15)));
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          dl_ch128+=3;
        }
        /*
          if (rb==0) {
          print_shorts("dl_ch128",&dl_ch128[0]);
          print_shorts("dl_ch128",&dl_ch128[1]);
          print_shorts("dl_ch128",&dl_ch128[2]);
          }
        */
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      }

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      avg[(aatx<<1)+aarx] =(((int32_t*)&avg128D)[0] +
                            ((int32_t*)&avg128D)[1] +
                            ((int32_t*)&avg128D)[2] +
3642
			      ((int32_t*)&avg128D)[3])/y;
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                //  printf("Channel level : %d\n",avg[(aatx<<1)+aarx]);
3644
    }
3645

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  _mm_empty();
  _m_empty();

3649 3650
#elif defined(__arm__)

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  short rb;
  unsigned char aatx,aarx,nre=12,symbol_mod;
  int32x4_t avg128D;
  int16x4_t *dl_ch128;

  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

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3658
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++)
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    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      //clear average level
      avg128D = vdupq_n_s32(0);
      // 5 is always a symbol with no pilots for both normal and extended prefix

      dl_ch128=(int16x4_t *)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];

      for (rb=0; rb<nb_rb; rb++) {
        //  printf("rb %d : ",rb);
        //  print_shorts("ch",&dl_ch128[0]);
        avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[0],dl_ch128[0]));
        avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[1],dl_ch128[1]));
        avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[2],dl_ch128[2]));
        avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[3],dl_ch128[3]));

3674
        if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) {
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          dl_ch128+=4;
        } else {
          avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[4],dl_ch128[4]));
          avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[5],dl_ch128[5]));
          dl_ch128+=6;
        }

        /*
          if (rb==0) {
          print_shorts("dl_ch128",&dl_ch128[0]);
          print_shorts("dl_ch128",&dl_ch128[1]);
          print_shorts("dl_ch128",&dl_ch128[2]);
          }
        */
      }


3692
      if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1))
3693
        nre=8;
3694
      else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB==1))
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        nre=10;
      else
        nre=12;

      avg[(aatx<<1)+aarx] = (((int32_t*)&avg128D)[0] +
                             ((int32_t*)&avg128D)[1] +
                             ((int32_t*)&avg128D)[2] +
                             ((int32_t*)&avg128D)[3])/(nb_rb*nre);

      //            printf("Channel level : %d\n",avg[(aatx<<1)+aarx]);
    }


3708
#endif
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}

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void dlsch_channel_level_core(int **dl_ch_estimates_ext,
                              int32_t *avg,
                              int n_tx,
                              int n_rx,
                              int length,
                              int start_point)
{

#if defined(__x86_64__)||defined(__i386__)

  short ii;
  int aatx,aarx;
  int length_mod4;
  int length2;
  __m128i *dl_ch128, avg128D;

  int16_t x = factor2(length);
  int16_t y = (length)>>x;

  for (aatx=0; aatx<n_tx; aatx++)
    for (aarx=0; aarx<n_rx; aarx++) {
       //clear average level
      //printf("aatx = %d, aarx = %d, aatx*frame_parms->nb_antennas_rx + aarx] = %d \n", aatx, aarx, aatx*frame_parms->nb_antennas_rx + aarx);

      avg128D = _mm_setzero_si128();
      // 5 is always a symbol with no pilots for both normal and extended prefix

      dl_ch128=(__m128i *)&dl_ch_estimates_ext[aatx*n_rx + aarx][start_point];

      length_mod4=length&3;

      if (length_mod4 == 0){

        length2 = length>>2;

        for (ii=0;ii<length2;ii++) {
          //printf("rb %d : ",rb);
          avg128D = _mm_add_epi32(avg128D,_mm_srai_epi16(_mm_madd_epi16(dl_ch128[0],dl_ch128[0]),x));
          avg128D = _mm_add_epi32(avg128D,_mm_srai_epi16(_mm_madd_epi16(dl_ch128[1],dl_ch128[1]),x));

          //avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[0],_mm_srai_epi16(_mm_mulhi_epi16(dl_ch128[0], coeff128),15)));
          //avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[1],_mm_srai_epi16(_mm_mulhi_epi16(dl_ch128[1], coeff128),15)));

          if (ii == 0){
            //print_shorts("dl_ch128",&dl_ch128[0]);
            //print_shorts("dl_ch128",&dl_ch128[1]);
          }

          dl_ch128+=2;
        }
      }else {
        printf ("Channel level: Received number of subcarriers is not multiple of 4, \n"
                 "need to adapt the code!\n");
      }


      avg[aatx*n_rx + aarx] =(((int32_t*)&avg128D)[0] +
                              ((int32_t*)&avg128D)[1] +
                              ((int32_t*)&avg128D)[2] +
                              ((int32_t*)&avg128D)[3])/y;
      //printf("Channel level [%d]: %d\n",aatx*n_rx + aarx, avg[aatx*n_rx + aarx]);
      }

  _mm_empty();
  _m_empty();

#elif defined(__arm__)

  short rb;
  unsigned char aatx,aarx,nre=12,symbol_mod;
  int32x4_t avg128D;
  int16x4_t *dl_ch128;

  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++)
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      //clear average level
      avg128D = vdupq_n_s32(0);
      // 5 is always a symbol with no pilots for both normal and extended prefix

      dl_ch128=(int16x4_t *)&dl_ch_estimates_ext[aatx*frame_parms->nb_antennas_rx + aarx][symbol*frame_parms->N_RB_DL*12];

      for (rb=0; rb<nb_rb; rb++) {
        //  printf("rb %d : ",rb);
        //  print_shorts("ch",&dl_ch128[0]);
        avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[0],dl_ch128[0]));
        avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[1],dl_ch128[1]));
        avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[2],dl_ch128[2]));
        avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[3],dl_ch128[3]));

        if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) {
          dl_ch128+=4;
        } else {
          avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[4],dl_ch128[4]));
          avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[5],dl_ch128[5]));
          dl_ch128+=6;
        }

        /*
          if (rb==0) {
          print_shorts("dl_ch128",&dl_ch128[0]);
          print_shorts("dl_ch128",&dl_ch128[1]);
          print_shorts("dl_ch128",&dl_ch128[2]);
          }
        */
      }


      if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1))
        nre=8;
      else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB==1))
        nre=10;
      else
        nre=12;

      avg[aatx*frame_parms->nb_antennas_rx + aarx] = (((int32_t*)&avg128D)[0] +
                                                          ((int32_t*)&avg128D)[1] +
                                                          ((int32_t*)&avg128D)[2] +
                                                          ((int32_t*)&avg128D)[3])/(nb_rb*nre);

      //printf("Channel level : %d\n",avg[aatx*(frame_parms->nb_antennas_rx-1) + aarx]);
    }
#endif

}

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3838 3839
//compute average channel_level of effective (precoded) channel

3840
//compute average channel_level of effective (precoded) channel
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3841 3842
void dlsch_channel_level_TM34(int **dl_ch_estimates_ext,
                              LTE_DL_FRAME_PARMS *frame_parms,
3843
                              unsigned char *pmi_ext,
3844
                              int *avg_0,
3845
                              int *avg_1,
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                              uint8_t symbol,
                              unsigned short nb_rb,
                              MIMO_mode_t mimo_mode){

3850
#if defined(__x86_64__)||defined(__i386__)
3851

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3852

3853 3854
  short rb;
  unsigned char aarx,nre=12,symbol_mod;
3855
  __m128i *dl_ch0_128,*dl_ch1_128, dl_ch0_128_tmp, dl_ch1_128_tmp, avg_0_128D, avg_1_128D;
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  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

  //clear average level
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 // avg_0_128D = _mm_setzero_si128();
 // avg_1_128D = _mm_setzero_si128();
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  avg_0[0] = 0;
  avg_0[1] = 0;
  avg_1[0] = 0;
  avg_1[1] = 0;
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  // 5 is always a symbol with no pilots for both normal and extended prefix

3868
  if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1))
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    nre=8;
3870
  else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB==1))
3871 3872 3873 3874
    nre=10;
  else
    nre=12;

3875
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
3876 3877
    dl_ch0_128 = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch1_128 = (__m128i *)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
3878

3879 3880
    avg_0_128D = _mm_setzero_si128();
    avg_1_128D = _mm_setzero_si128();
3881
    for (rb=0; rb<nb_rb; rb++) {
3882 3883
              // printf("rb %d : \n",rb);
              // print_shorts("ch0\n",&dl_ch0_128[0]);
3884
               //print_shorts("ch1\n",&dl_ch1_128[0]);
3885 3886 3887
      dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[0]);
      dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[0]);

3888
      if (mimo_mode==LARGE_CDD)
3889 3890 3891 3892 3893
        prec2A_TM3_128(&dl_ch0_128_tmp,&dl_ch1_128_tmp);
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1)
        prec2A_TM4_128(0,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODINGj)
        prec2A_TM4_128(1,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
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3894
      else if (mimo_mode==DUALSTREAM_PUSCH_PRECODING)
3895
        prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
3896

3897
      //      mmtmpD0 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
3898
      avg_0_128D = _mm_add_epi32(avg_0_128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
3899

3900
      avg_1_128D = _mm_add_epi32(avg_1_128D,_mm_madd_epi16(dl_ch1_128_tmp,dl_ch1_128_tmp));
3901

3902
      dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[1]);
3903
      dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[1]);
3904

3905
      if (mimo_mode==LARGE_CDD)
3906 3907 3908 3909 3910
        prec2A_TM3_128(&dl_ch0_128_tmp,&dl_ch1_128_tmp);
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1)
        prec2A_TM4_128(0,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODINGj)
        prec2A_TM4_128(1,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
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3911
      else if (mimo_mode==DUALSTREAM_PUSCH_PRECODING)
3912
        prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
3913

3914
      //      mmtmpD1 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
3915
      avg_0_128D = _mm_add_epi32(avg_0_128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
3916

3917
      avg_1_128D = _mm_add_epi32(avg_1_128D,_mm_madd_epi16(dl_ch1_128_tmp,dl_ch1_128_tmp));
3918

3919
      if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) {
3920
        dl_ch0_128+=2;
3921
        dl_ch1_128+=2;
3922 3923
      }
      else {
3924
        dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[2]);
3925
        dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[2]);
3926

3927
        if (mimo_mode==LARGE_CDD)
3928 3929 3930 3931 3932
          prec2A_TM3_128(&dl_ch0_128_tmp,&dl_ch1_128_tmp);
        else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1)
          prec2A_TM4_128(0,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
        else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODINGj)
          prec2A_TM4_128(1,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
3933 3934
        else if (mimo_mode==DUALSTREAM_PUSCH_PRECODING)
          prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
3935
        //      mmtmpD2 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
3936

3937 3938
        avg_1_128D = _mm_add_epi32(avg_1_128D,_mm_madd_epi16(dl_ch1_128_tmp,dl_ch1_128_tmp));
        avg_0_128D = _mm_add_epi32(avg_0_128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
3939 3940

        dl_ch0_128+=3;
3941
        dl_ch1_128+=3;
3942
      }
3943
    }
3944 3945


3946 3947 3948 3949 3950
    avg_0[aarx] = (((int*)&avg_0_128D)[0])/(nb_rb*nre) +
      (((int*)&avg_0_128D)[1])/(nb_rb*nre) +
      (((int*)&avg_0_128D)[2])/(nb_rb*nre) +
      (((int*)&avg_0_128D)[3])/(nb_rb*nre);
    //  printf("From Chan_level aver stream 0 %d =%d\n", aarx, avg_0[aarx]);
3951

3952 3953 3954
    avg_1[aarx] = (((int*)&avg_1_128D)[0])/(nb_rb*nre) +
      (((int*)&avg_1_128D)[1])/(nb_rb*nre) +
      (((int*)&avg_1_128D)[2])/(nb_rb*nre) +
3955
      (((int*)&avg_1_128D)[3])/(nb_rb*nre);
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3956
  //    printf("From Chan_level aver stream 1 %d =%d\n", aarx, avg_1[aarx]);
3957
  }
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3958 3959 3960 3961 3962
//avg_0[0] = max(avg_0[0],avg_0[1]);
//avg_1[0] = max(avg_1[0],avg_1[1]);
//avg_0[0]= max(avg_0[0], avg_1[0]);

  avg_0[0] = avg_0[0] + avg_0[1];
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3963
 // printf("From Chan_level aver stream 0 final =%d\n", avg_0[0]);
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  avg_1[0] = avg_1[0] + avg_1[1];
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 // printf("From Chan_level aver stream 1 final =%d\n", avg_1[0]);
 avg_0[0] = min (avg_0[0], avg_1[0]);
 avg_1[0] = avg_0[0];

3969 3970
  _mm_empty();
  _m_empty();
3971

3972
#elif defined(__arm__)
3973

3974
#endif
3975 3976
}

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/*void dlsch_channel_level_TM34(int **dl_ch_estimates_ext,
                              LTE_DL_FRAME_PARMS *frame_parms,
                              int *avg,
                              uint8_t symbol,
                              unsigned short nb_rb,
                              MIMO_mode_t mimo_mode){

3986
#if defined(__x86_64__)||defined(__i386__)
3987

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3988

3989 3990 3991 3992 3993 3994 3995
  short rb;
  unsigned char aarx,nre=12,symbol_mod;
  __m128i *dl_ch0_128,*dl_ch1_128, dl_ch0_128_tmp, dl_ch1_128_tmp,avg128D;

  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

  //clear average level
3996
  avg128D = _mm_setzero_si128();
3997 3998 3999 4000
  avg[0] = 0;
  avg[1] = 0;
  // 5 is always a symbol with no pilots for both normal and extended prefix

4001
  if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1))
4002
    nre=8;
4003
  else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB==1))
4004 4005 4006 4007
    nre=10;
  else
    nre=12;

4008
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
4009 4010 4011
    dl_ch0_128 = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch1_128 = (__m128i *)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];

4012
    for (rb=0; rb<nb_rb; rb++) {
4013 4014 4015 4016

      dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[0]);
      dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[0]);

4017
      if (mimo_mode==LARGE_CDD)
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4018 4019 4020 4021 4022 4023
        prec2A_TM3_128(&dl_ch0_128_tmp,&dl_ch1_128_tmp);
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1)
        prec2A_TM4_128(0,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODINGj)
        prec2A_TM4_128(1,&dl_ch0_128_tmp,&dl_ch1_128_tmp);

4024
      //      mmtmpD0 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
4025 4026 4027
      avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));

      dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[1]);
4028
      dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[1]);
4029

4030
      if (mimo_mode==LARGE_CDD)
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        prec2A_TM3_128(&dl_ch0_128_tmp,&dl_ch1_128_tmp);
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1)
        prec2A_TM4_128(0,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODINGj)
        prec2A_TM4_128(1,&dl_ch0_128_tmp,&dl_ch1_128_tmp);

4037
      //      mmtmpD1 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
4038 4039
      avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));

4040
      if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) {
4041 4042
        dl_ch0_128+=2;
        dl_ch1_128+=2;
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4043 4044
      }
      else {
4045 4046 4047
        dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[2]);
        dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[2]);

4048
        if (mimo_mode==LARGE_CDD)
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4049 4050 4051 4052 4053 4054 4055
          prec2A_TM3_128(&dl_ch0_128_tmp,&dl_ch1_128_tmp);
        else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1)
          prec2A_TM4_128(0,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
        else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODINGj)
          prec2A_TM4_128(1,&dl_ch0_128_tmp,&dl_ch1_128_tmp);

        //      mmtmpD2 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
4056 4057 4058 4059
        avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));

        dl_ch0_128+=3;
        dl_ch1_128+=3;
4060 4061
      }
    }
4062 4063

    avg[aarx] = (((int*)&avg128D)[0])/(nb_rb*nre) +
4064 4065 4066
      (((int*)&avg128D)[1])/(nb_rb*nre) +
      (((int*)&avg128D)[2])/(nb_rb*nre) +
      (((int*)&avg128D)[3])/(nb_rb*nre);
4067
  }
4068

4069 4070 4071 4072 4073
  // choose maximum of the 2 effective channels
  avg[0] = cmax(avg[0],avg[1]);

  _mm_empty();
  _m_empty();
4074 4075 4076 4077

#elif defined(__arm__)

#endif
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4078
}*/
4079 4080 4081

//compute average channel_level of effective (precoded) channel
void dlsch_channel_level_TM56(int **dl_ch_estimates_ext,
4082 4083 4084
                              LTE_DL_FRAME_PARMS *frame_parms,
                              unsigned char *pmi_ext,
                              int *avg,
4085
                              uint8_t symbol,
4086 4087
                              unsigned short nb_rb)
{
4088

4089 4090
#if defined(__x86_64__)||defined(__i386__)

4091 4092
  short rb;
  unsigned char aarx,nre=12,symbol_mod;
4093
  __m128i *dl_ch0_128,*dl_ch1_128, dl_ch0_128_tmp, dl_ch1_128_tmp,avg128D;
4094 4095 4096 4097

  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

  //clear average level
4098
  avg128D = _mm_setzero_si128();
4099 4100 4101 4102
  avg[0] = 0;
  avg[1] = 0;
  // 5 is always a symbol with no pilots for both normal and extended prefix

4103
  if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1))
4104
    nre=8;
4105
  else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB==1))
4106 4107 4108 4109
    nre=10;
  else
    nre=12;

4110
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
4111 4112
    dl_ch0_128 = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch1_128 = (__m128i *)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
4113

4114
    for (rb=0; rb<nb_rb; rb++) {
4115

4116 4117
      dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[0]);
      dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[0]);
4118

4119
      prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
4120
      //      mmtmpD0 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
4121
      avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
4122

4123
      dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[1]);
4124
      dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[1]);
4125

4126
      prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
4127
      //      mmtmpD1 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
4128
      avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
4129

4130
      if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) {
4131 4132
        dl_ch0_128+=2;
        dl_ch1_128+=2;
4133 4134
      }
      else {
4135 4136 4137 4138
        dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[2]);
        dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[2]);

        prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
4139
        //      mmtmpD2 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
4140 4141 4142 4143
        avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));

        dl_ch0_128+=3;
        dl_ch1_128+=3;
4144 4145
      }
    }
4146 4147

    avg[aarx] = (((int*)&avg128D)[0])/(nb_rb*nre) +
4148 4149 4150
      (((int*)&avg128D)[1])/(nb_rb*nre) +
      (((int*)&avg128D)[2])/(nb_rb*nre) +
      (((int*)&avg128D)[3])/(nb_rb*nre);
4151
  }
4152

4153 4154 4155 4156 4157
  // choose maximum of the 2 effective channels
  avg[0] = cmax(avg[0],avg[1]);

  _mm_empty();
  _m_empty();
4158 4159 4160 4161 4162

#elif defined(__arm__)


#endif
4163
}
4164

4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175 4176 4177 4178 4179 4180
//compute average channel_level for TM7
void dlsch_channel_level_TM7(int **dl_bf_ch_estimates_ext,
                         LTE_DL_FRAME_PARMS *frame_parms,
                         int *avg,
                         uint8_t symbol,
                         unsigned short nb_rb)
{

#if defined(__x86_64__)||defined(__i386__)

  short rb;
  unsigned char aatx,aarx,nre=12,symbol_mod;
  __m128i *dl_ch128,avg128D;

  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

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4181
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++)
4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      //clear average level
      avg128D = _mm_setzero_si128();
      // 5 is always a symbol with no pilots for both normal and extended prefix

      dl_ch128=(__m128i *)&dl_bf_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];

      for (rb=0; rb<nb_rb; rb++) {
        //  printf("rb %d : ",rb);
        //  print_shorts("ch",&dl_ch128[0]);
        avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[0],dl_ch128[0]));
        avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[1],dl_ch128[1]));

4195
        if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) {
4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234
          dl_ch128+=2;
        } else {
          avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[2],dl_ch128[2]));
          dl_ch128+=3;
        }

        /*
          if (rb==0) {
          print_shorts("dl_ch128",&dl_ch128[0]);
          print_shorts("dl_ch128",&dl_ch128[1]);
          print_shorts("dl_ch128",&dl_ch128[2]);
          }
        */
      }

      if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1))))
        nre=10;
      else if ((frame_parms->Ncp==0) && (symbol==3 || symbol==6 || symbol==9 || symbol==12))
        nre=9;
      else if ((frame_parms->Ncp==1) && (symbol==4 || symbol==7 || symbol==9))
        nre=8;
      else
        nre=12;

      avg[(aatx<<1)+aarx] = (((int*)&avg128D)[0] +
                             ((int*)&avg128D)[1] +
                             ((int*)&avg128D)[2] +
                             ((int*)&avg128D)[3])/(nb_rb*nre);

      //            printf("Channel level : %d\n",avg[(aatx<<1)+aarx]);
    }

  _mm_empty();
  _m_empty();

#elif defined(__arm__)

#endif
}
4235
//#define ONE_OVER_2_Q15 16384
4236 4237 4238 4239 4240
void dlsch_alamouti(LTE_DL_FRAME_PARMS *frame_parms,
                    int **rxdataF_comp,
                    int **dl_ch_mag,
                    int **dl_ch_magb,
                    unsigned char symbol,
4241 4242
                    unsigned short nb_rb)
{
4243

4244
#if defined(__x86_64__)||defined(__i386__)
4245 4246

  short *rxF0,*rxF1;
4247
  __m128i *ch_mag0,*ch_mag1,*ch_mag0b,*ch_mag1b, *rxF0_128;
4248 4249
  unsigned char rb,re;
  int jj = (symbol*frame_parms->N_RB_DL*12);
4250 4251
  uint8_t symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
  uint8_t pilots = ((symbol_mod==0)||(symbol_mod==(4-frame_parms->Ncp))) ? 1 : 0;
4252 4253
  rxF0_128 = (__m128i*) &rxdataF_comp[0][jj];

4254
  //amp = _mm_set1_epi16(ONE_OVER_2_Q15);
4255 4256 4257 4258 4259 4260 4261 4262 4263


  //    printf("Doing alamouti!\n");
  rxF0     = (short*)&rxdataF_comp[0][jj];  //tx antenna 0  h0*y
  rxF1     = (short*)&rxdataF_comp[2][jj];  //tx antenna 1  h1*y
  ch_mag0 = (__m128i *)&dl_ch_mag[0][jj];
  ch_mag1 = (__m128i *)&dl_ch_mag[2][jj];
  ch_mag0b = (__m128i *)&dl_ch_magb[0][jj];
  ch_mag1b = (__m128i *)&dl_ch_magb[2][jj];
4264

4265 4266 4267
  for (rb=0; rb<nb_rb; rb++) {

    for (re=0; re<((pilots==0)?12:8); re+=2) {
4268 4269

      // Alamouti RX combining
4270

4271
      //      printf("Alamouti: symbol %d, rb %d, re %d: rxF0 (%d,%d,%d,%d), rxF1 (%d,%d,%d,%d)\n",symbol,rb,re,rxF0[0],rxF0[1],rxF0[2],rxF0[3],rxF1[0],rxF1[1],rxF1[2],rxF1[3]);
4272
      rxF0[0] = rxF0[0] + rxF1[2];
4273
      rxF0[1] = rxF0[1] - rxF1[3];
4274 4275 4276

      rxF0[2] = rxF0[2] - rxF1[0];
      rxF0[3] = rxF0[3] + rxF1[1];
4277

4278
      //      printf("Alamouti: rxF0 after (%d,%d,%d,%d)\n",rxF0[0],rxF0[1],rxF0[2],rxF0[3]);
4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291
      rxF0+=4;
      rxF1+=4;

    }

    // compute levels for 16QAM or 64 QAM llr unit
    ch_mag0[0] = _mm_adds_epi16(ch_mag0[0],ch_mag1[0]);
    ch_mag0[1] = _mm_adds_epi16(ch_mag0[1],ch_mag1[1]);

    ch_mag0b[0] = _mm_adds_epi16(ch_mag0b[0],ch_mag1b[0]);
    ch_mag0b[1] = _mm_adds_epi16(ch_mag0b[1],ch_mag1b[1]);

    // account for 1/sqrt(2) scaling at transmission
4292 4293 4294 4295 4296 4297 4298 4299 4300 4301 4302 4303 4304
    //ch_mag0[0] = _mm_srai_epi16(ch_mag0[0],1);
    //ch_mag0[1] = _mm_srai_epi16(ch_mag0[1],1);
    //ch_mag0b[0] = _mm_srai_epi16(ch_mag0b[0],1);
    //ch_mag0b[1] = _mm_srai_epi16(ch_mag0b[1],1);

    //rxF0_128[0] = _mm_mulhi_epi16(rxF0_128[0],amp);
    //rxF0_128[0] = _mm_slli_epi16(rxF0_128[0],1);
    //rxF0_128[1] = _mm_mulhi_epi16(rxF0_128[1],amp);
    //rxF0_128[1] = _mm_slli_epi16(rxF0_128[1],1);

    //rxF0_128[0] = _mm_srai_epi16(rxF0_128[0],1);
    //rxF0_128[1] = _mm_srai_epi16(rxF0_128[1],1);

4305 4306 4307 4308 4309 4310


    if (pilots==0) {
      ch_mag0[2] = _mm_adds_epi16(ch_mag0[2],ch_mag1[2]);
      ch_mag0b[2] = _mm_adds_epi16(ch_mag0b[2],ch_mag1b[2]);

4311 4312 4313 4314 4315 4316 4317
      //ch_mag0[2] = _mm_srai_epi16(ch_mag0[2],1);
      //ch_mag0b[2] = _mm_srai_epi16(ch_mag0b[2],1);

      //rxF0_128[2] = _mm_mulhi_epi16(rxF0_128[2],amp);
      //rxF0_128[2] = _mm_slli_epi16(rxF0_128[2],1);

      //rxF0_128[2] = _mm_srai_epi16(rxF0_128[2],1);
4318 4319 4320 4321 4322 4323 4324


      ch_mag0+=3;
      ch_mag1+=3;
      ch_mag0b+=3;
      ch_mag1b+=3;
      rxF0_128+=3;
4325
    } else {
4326 4327 4328 4329 4330 4331 4332 4333 4334
      ch_mag0+=2;
      ch_mag1+=2;
      ch_mag0b+=2;
      ch_mag1b+=2;
      rxF0_128+=2;
    }
  }

  _mm_empty();
4335
  _m_empty();
4336

4337
#elif defined(__arm__)
4338

4339
#endif
4340 4341
}

4342

4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355
//==============================================================================================
// Extraction functions
//==============================================================================================

unsigned short dlsch_extract_rbs_single(int **rxdataF,
                                        int **dl_ch_estimates,
                                        int **rxdataF_ext,
                                        int **dl_ch_estimates_ext,
                                        unsigned short pmi,
                                        unsigned char *pmi_ext,
                                        unsigned int *rb_alloc,
                                        unsigned char symbol,
                                        unsigned char subframe,
4356
                                        uint32_t high_speed_flag,
4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372
                                        LTE_DL_FRAME_PARMS *frame_parms) {



  unsigned short rb,nb_rb=0;
  unsigned char rb_alloc_ind;
  unsigned char i,aarx,l,nsymb,skip_half=0,sss_symb,pss_symb=0;
  int *dl_ch0,*dl_ch0_ext,*rxF,*rxF_ext;



  unsigned char symbol_mod,pilots=0,j=0,poffset=0;

  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
  pilots = ((symbol_mod==0)||(symbol_mod==(4-frame_parms->Ncp))) ? 1 : 0;
  l=symbol;
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  nsymb = (frame_parms->Ncp==NORMAL) ? 14:12;
4374

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  if (frame_parms->frame_type == TDD) {  // TDD
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    sss_symb = nsymb-1;
    pss_symb = 2;
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  } else {
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    sss_symb = (nsymb>>1)-2;
    pss_symb = (nsymb>>1)-1;
  }
4382

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  if (symbol_mod==(4-frame_parms->Ncp))
    poffset=3;

4386
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
4387 4388 4389 4390 4391

    if (high_speed_flag == 1)
      dl_ch0     = &dl_ch_estimates[aarx][5+(symbol*(frame_parms->ofdm_symbol_size))];
    else
      dl_ch0     = &dl_ch_estimates[aarx][5];
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    dl_ch0_ext = &dl_ch_estimates_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];

    rxF_ext   = &rxdataF_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];
    rxF       = &rxdataF[aarx][(frame_parms->first_carrier_offset + (symbol*(frame_parms->ofdm_symbol_size)))];
4397

4398
    if ((frame_parms->N_RB_DL&1) == 0)  // even number of RBs
4399

4400
      for (rb=0;rb<frame_parms->N_RB_DL;rb++) {
4401 4402 4403 4404 4405 4406 4407 4408 4409 4410 4411 4412

        if (rb < 32)
          rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
        else if (rb < 64)
          rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
        else if (rb < 96)
          rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
        else if (rb < 100)
          rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
        else
          rb_alloc_ind = 0;

4413
        if (rb_alloc_ind == 1)
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          nb_rb++;

4416 4417 4418 4419 4420 4421
        // For second half of RBs skip DC carrier
        if (rb==(frame_parms->N_RB_DL>>1)) {
          rxF       = &rxdataF[aarx][(1 + (symbol*(frame_parms->ofdm_symbol_size)))];
          //dl_ch0++;
        }

4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446
        // PBCH
        if ((subframe==0) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l>=nsymb>>1) && (l<((nsymb>>1) + 4))) {
          rb_alloc_ind = 0;
        }

        //SSS
        if (((subframe==0)||(subframe==5)) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==sss_symb) ) {
          rb_alloc_ind = 0;
        }


        if (frame_parms->frame_type == FDD) {
          //PSS
          if (((subframe==0)||(subframe==5)) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }
        }

        if ((frame_parms->frame_type == TDD) &&
            (subframe==6)) { //TDD Subframe 6
          if ((rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }
        }

4447 4448 4449 4450 4451
        if (rb_alloc_ind==1) {
          *pmi_ext = (pmi>>((rb>>2)<<1))&3;
          memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));

          /*
4452 4453 4454 4455
            printf("rb %d\n",rb);
            for (i=0;i<12;i++)
            printf("(%d %d)",((short *)dl_ch0)[i<<1],((short*)dl_ch0)[1+(i<<1)]);
            printf("\n");
4456 4457 4458 4459 4460
          */
          if (pilots==0) {
            for (i=0; i<12; i++) {
              rxF_ext[i]=rxF[i];
              /*
4461 4462
                printf("%d : (%d,%d)\n",(rxF+i-&rxdataF[aarx][( (symbol*(frame_parms->ofdm_symbol_size)))]),
                ((short*)&rxF[i])[0],((short*)&rxF[i])[1]);*/
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            }

            dl_ch0_ext+=12;
            rxF_ext+=12;
          } else {
            j=0;

            for (i=0; i<12; i++) {
              if ((i!=(frame_parms->nushift+poffset)) &&
                  (i!=((frame_parms->nushift+poffset+6)%12))) {
                rxF_ext[j]=rxF[i];
                //            printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
                dl_ch0_ext[j++]=dl_ch0[i];

              }
            }

            dl_ch0_ext+=10;
            rxF_ext+=10;
          }

4484

4485 4486 4487 4488
        }

        dl_ch0+=12;
        rxF+=12;
4489 4490 4491

      }
    else {  // Odd number of RBs
4492
      for (rb=0; rb<frame_parms->N_RB_DL>>1; rb++) {
4493
#ifdef DEBUG_DLSCH_DEMOD
4494
        printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
4495
#endif
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        skip_half=0;

        if (rb < 32)
          rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
        else if (rb < 64)
          rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
        else if (rb < 96)
          rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
        else if (rb < 100)
          rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
        else
          rb_alloc_ind = 0;

4509 4510
        if (rb_alloc_ind == 1)
          nb_rb++;
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        // PBCH
        if ((subframe==0) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4))) {
          rb_alloc_ind = 0;
        }

        //PBCH subframe 0, symbols nsymb>>1 ... nsymb>>1 + 3
        if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
          skip_half=1;
        else if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
          skip_half=2;

        //SSS

        if (((subframe==0)||(subframe==5)) &&
            (rb>((frame_parms->N_RB_DL>>1)-3)) &&
            (rb<((frame_parms->N_RB_DL>>1)+3)) &&
            (l==sss_symb) ) {
          rb_alloc_ind = 0;
        }
        //SSS
        if (((subframe==0)||(subframe==5)) &&
            (rb==((frame_parms->N_RB_DL>>1)-3)) &&
            (l==sss_symb))
          skip_half=1;
        else if (((subframe==0)||(subframe==5)) &&
                 (rb==((frame_parms->N_RB_DL>>1)+3)) &&
                 (l==sss_symb))
          skip_half=2;

        //PSS in subframe 0/5 if FDD
        if (frame_parms->frame_type == FDD) {  //FDD
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4545
          if (((subframe==0)||(subframe==5)) &&
4546 4547 4548
              (rb>((frame_parms->N_RB_DL>>1)-3)) &&
              (rb<((frame_parms->N_RB_DL>>1)+3)) &&
              (l==pss_symb) ) {
4549 4550 4551 4552 4553 4554 4555 4556 4557 4558
            rb_alloc_ind = 0;
          }

          if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
            skip_half=1;
          else if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
            skip_half=2;
        }

        if ((frame_parms->frame_type == TDD) &&
4559
            (subframe==6)){  //TDD Subframe 6
4560 4561 4562 4563 4564 4565 4566 4567 4568 4569 4570
          if ((rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }
          if ((rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
            skip_half=1;
          else if ((rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
            skip_half=2;
        }


        if (rb_alloc_ind==1) {
4571

4572
#ifdef DEBUG_DLSCH_DEMOD
4573
          printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
4574
#endif
4575
          if (pilots==0) {
4576
            //      printf("Extracting w/o pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
4577 4578 4579
            if (skip_half==1) {
              memcpy(dl_ch0_ext,dl_ch0,6*sizeof(int));

4580
              for (i=0; i<6; i++) {
4581
                rxF_ext[i]=rxF[i];
4582
#ifdef DEBUG_DLSCH_DEMOD
4583
                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
4584
#endif
4585
              }
4586 4587 4588 4589 4590
              dl_ch0_ext+=6;
              rxF_ext+=6;
            } else if (skip_half==2) {
              memcpy(dl_ch0_ext,dl_ch0+6,6*sizeof(int));

4591
              for (i=0; i<6; i++) {
4592
                rxF_ext[i]=rxF[(i+6)];
4593
#ifdef DEBUG_DLSCH_DEMOD
4594
                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
4595
#endif
4596
              }
4597 4598 4599 4600 4601
              dl_ch0_ext+=6;
              rxF_ext+=6;
            } else {
              memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));

4602
              for (i=0; i<12; i++) {
4603
                rxF_ext[i]=rxF[i];
4604 4605 4606
#ifdef DEBUG_DLSCH_DEMOD
                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
4607
              }
4608 4609 4610 4611
              dl_ch0_ext+=12;
              rxF_ext+=12;
            }
          } else {
4612
            //      printf("Extracting with pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
4613 4614 4615 4616 4617 4618
            j=0;

            if (skip_half==1) {
              for (i=0; i<6; i++) {
                if (i!=((frame_parms->nushift+poffset)%6)) {
                  rxF_ext[j]=rxF[i];
4619 4620 4621
#ifdef DEBUG_DLSCH_DEMOD
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
#endif
4622 4623 4624
                  dl_ch0_ext[j++]=dl_ch0[i];
                }
              }
4625
              rxF_ext+=5;
4626 4627 4628 4629 4630
              dl_ch0_ext+=5;
            } else if (skip_half==2) {
              for (i=0; i<6; i++) {
                if (i!=((frame_parms->nushift+poffset)%6)) {
                  rxF_ext[j]=rxF[(i+6)];
4631
#ifdef DEBUG_DLSCH_DEMOD
4632
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
4633
#endif
4634 4635 4636 4637 4638 4639 4640 4641 4642 4643 4644
                  dl_ch0_ext[j++]=dl_ch0[i+6];
                }
              }

              dl_ch0_ext+=5;
              rxF_ext+=5;
            } else {
              for (i=0; i<12; i++) {
                if ((i!=(frame_parms->nushift+poffset)) &&
                    (i!=((frame_parms->nushift+poffset+6)%12))) {
                  rxF_ext[j]=rxF[i];
4645
#ifdef DEBUG_DLSCH_DEMOD
4646
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
4647
#endif
4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659
                  dl_ch0_ext[j++]=dl_ch0[i];

                }
              }

              dl_ch0_ext+=10;
              rxF_ext+=10;
            }
          }
        }
        dl_ch0+=12;
        rxF+=12;
4660 4661 4662 4663 4664
      } // first half loop


      // Do middle RB (around DC)
      if (rb < 32)
4665
        rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
4666
      else if (rb < 64)
4667
        rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
4668
      else if (rb < 96)
4669
        rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
4670
      else if (rb < 100)
4671
        rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
4672
      else
4673
        rb_alloc_ind = 0;
4674

4675

4676
      if (rb_alloc_ind == 1)
4677
        nb_rb++;
4678 4679

      // PBCH
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4680

4681
      if ((subframe==0) &&
4682 4683
          (l>=(nsymb>>1)) &&
          (l<((nsymb>>1) + 4))) {
4684
        rb_alloc_ind = 0;
4685
      }
4686

4687
      //SSS
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4688
      if (((subframe==0)||(subframe==5)) && (l==sss_symb) ) {
4689
        rb_alloc_ind = 0;
4690
      }
4691

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      if (frame_parms->frame_type == FDD) {
4693
        //PSS
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4694
        if (((subframe==0)||(subframe==5)) && (l==pss_symb) ) {
4695 4696
          rb_alloc_ind = 0;
        }
4697 4698
      }

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4699
      //PSS
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4700
      if ((frame_parms->frame_type == TDD) &&
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4701
          (subframe==6) &&
4702 4703
          (l==pss_symb) ) {
        rb_alloc_ind = 0;
4704
      }
4705

4706 4707

      //  printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
4708 4709
      //      printf("DC rb %d (%p)\n",rb,rxF);
      if (rb_alloc_ind==1) {
4710
#ifdef DEBUG_DLSCH_DEMOD
4711
        printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
4712
#endif
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        if (pilots==0) {
          for (i=0; i<6; i++) {
            dl_ch0_ext[i]=dl_ch0[i];
            rxF_ext[i]=rxF[i];
          }

          rxF       = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];

          for (; i<12; i++) {
            dl_ch0_ext[i]=dl_ch0[i];
            rxF_ext[i]=rxF[(1+i-6)];
          }

          dl_ch0_ext+=12;
          rxF_ext+=12;
        } else { // pilots==1
          j=0;

          for (i=0; i<6; i++) {
            if (i!=((frame_parms->nushift+poffset)%6)) {
              dl_ch0_ext[j]=dl_ch0[i];
              rxF_ext[j++]=rxF[i];
4735 4736 4737
#ifdef DEBUG_DLSCH_DEMOD
              printf("**extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j-1],*(1+(short*)&rxF_ext[j-1]));
#endif
4738 4739 4740 4741 4742 4743 4744 4745 4746
            }
          }

          rxF       = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];

          for (; i<12; i++) {
            if (i!=((frame_parms->nushift+6+poffset)%12)) {
              dl_ch0_ext[j]=dl_ch0[i];
              rxF_ext[j++]=rxF[(1+i-6)];
4747 4748
#ifdef DEBUG_DLSCH_DEMOD
              printf("**extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j-1],*(1+(short*)&rxF_ext[j-1]));
4749
#endif
4750 4751 4752 4753 4754 4755
            }
          }

          dl_ch0_ext+=10;
          rxF_ext+=10;
        } // symbol_mod==0
4756 4757
      } // rballoc==1
      else {
4758
        rxF       = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];
4759
      }
4760

4761 4762 4763
      dl_ch0+=12;
      rxF+=7;
      rb++;
4764

4765
      for (;rb<frame_parms->N_RB_DL;rb++) {
4766
        //      printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
4767
        //      printf("rb %d (%p)\n",rb,rxF);
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        skip_half=0;

        if (rb < 32)
          rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
        else if (rb < 64)
          rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
        else if (rb < 96)
          rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
        else if (rb < 100)
          rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
        else
          rb_alloc_ind = 0;

4781 4782
        if (rb_alloc_ind == 1)
          nb_rb++;
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        // PBCH
        if ((subframe==0) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l>=nsymb>>1) && (l<((nsymb>>1) + 4))) {
          rb_alloc_ind = 0;
        }
        //PBCH subframe 0, symbols nsymb>>1 ... nsymb>>1 + 3
        if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
          skip_half=1;
        else if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
          skip_half=2;

        //SSS
        if (((subframe==0)||(subframe==5)) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==sss_symb) ) {
          rb_alloc_ind = 0;
        }
        //SSS
        if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l==sss_symb))
          skip_half=1;
        else if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l==sss_symb))
          skip_half=2;
        if (frame_parms->frame_type == FDD) {
          //PSS
          if (((subframe==0)||(subframe==5)) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }

          //PSS
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          if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
            skip_half=1;
          else if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
            skip_half=2;
        }

        if ((frame_parms->frame_type == TDD) &&
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4818

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            (subframe==6)) { //TDD Subframe 6
          if ((rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }

          if ((rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
            skip_half=1;
          else if ((rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
            skip_half=2;
        }

        if (rb_alloc_ind==1) {
4831
#ifdef DEBUG_DLSCH_DEMOD
4832
          printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
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#endif
4834
          /*
4835
            printf("rb %d\n",rb);
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            for (i=0;i<12;i++)
            printf("(%d %d)",((short *)dl_ch0)[i<<1],((short*)dl_ch0)[1+(i<<1)]);
            printf("\n");
          */
          if (pilots==0) {
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            //      printf("Extracting w/o pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
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            if (skip_half==1) {
              memcpy(dl_ch0_ext,dl_ch0,6*sizeof(int));

4845
              for (i=0; i<6; i++) {
4846
                rxF_ext[i]=rxF[i];
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#ifdef DEBUG_DLSCH_DEMOD
4848
                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
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#endif
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              }
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              dl_ch0_ext+=6;
              rxF_ext+=6;

            } else if (skip_half==2) {
              memcpy(dl_ch0_ext,dl_ch0+6,6*sizeof(int));

4857
              for (i=0; i<6; i++) {
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                rxF_ext[i]=rxF[(i+6)];
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#ifdef DEBUG_DLSCH_DEMOD
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                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
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#endif
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              }
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              dl_ch0_ext+=6;
              rxF_ext+=6;

            } else {
              memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));

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              for (i=0; i<12; i++) {
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                rxF_ext[i]=rxF[i];
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#ifdef DEBUG_DLSCH_DEMOD
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                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
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#endif
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              }
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              dl_ch0_ext+=12;
              rxF_ext+=12;
            }
          } else {
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            //      printf("Extracting with pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
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            j=0;

            if (skip_half==1) {
              for (i=0; i<6; i++) {
                if (i!=((frame_parms->nushift+poffset)%6)) {
                  rxF_ext[j]=rxF[i];
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#ifdef DEBUG_DLSCH_DEMOD
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                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
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#endif
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                  dl_ch0_ext[j++]=dl_ch0[i];
                }
              }

              dl_ch0_ext+=5;
              rxF_ext+=5;
            } else if (skip_half==2) {
              for (i=0; i<6; i++) {
                if (i!=((frame_parms->nushift+poffset)%6)) {
                  rxF_ext[j]=rxF[(i+6)];
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#ifdef DEBUG_DLSCH_DEMOD
4900
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
4901
#endif
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                  dl_ch0_ext[j++]=dl_ch0[i+6];
                }
              }

              dl_ch0_ext+=5;
              rxF_ext+=5;
            } else {
              for (i=0; i<12; i++) {
                if ((i!=(frame_parms->nushift+poffset)) &&
                    (i!=((frame_parms->nushift+poffset+6)%12))) {
                  rxF_ext[j]=rxF[i];
4913
#ifdef DEBUG_DLSCH_DEMOD
4914
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
4915
#endif
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                  dl_ch0_ext[j++]=dl_ch0[i];
                }
              }
              dl_ch0_ext+=10;
              rxF_ext+=10;
            }
          } // pilots=0
        }

        dl_ch0+=12;
        rxF+=12;
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      }
    }
  }
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  return(nb_rb/frame_parms->nb_antennas_rx);
}

unsigned short dlsch_extract_rbs_dual(int **rxdataF,
                                      int **dl_ch_estimates,
                                      int **rxdataF_ext,
                                      int **dl_ch_estimates_ext,
                                      unsigned short pmi,
                                      unsigned char *pmi_ext,
                                      unsigned int *rb_alloc,
                                      unsigned char symbol,
                                      unsigned char subframe,
4944
                                      uint32_t high_speed_flag,
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4945
                                      LTE_DL_FRAME_PARMS *frame_parms,
4946
                                      MIMO_mode_t mimo_mode) {
4947

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  int prb,nb_rb=0;
  int prb_off,prb_off2;
  int rb_alloc_ind,skip_half=0,sss_symb,pss_symb=0,nsymb,l;
  int i,aarx;
  int32_t *dl_ch0,*dl_ch0p,*dl_ch0_ext,*dl_ch1,*dl_ch1p,*dl_ch1_ext,*rxF,*rxF_ext;
  int symbol_mod,pilots=0,j=0;
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  unsigned char *pmi_loc;

  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
  //  printf("extract_rbs: symbol_mod %d\n",symbol_mod);

  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp)))
    pilots=1;
4961

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4962
  nsymb = (frame_parms->Ncp==NORMAL) ? 14:12;
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  l=symbol;

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4965
  if (frame_parms->frame_type == TDD) {  // TDD
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    sss_symb = nsymb-1;
    pss_symb = 2;
4968
  } else {
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    sss_symb = (nsymb>>1)-2;
    pss_symb = (nsymb>>1)-1;
  }

4973
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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    if (high_speed_flag==1) {
      dl_ch0     = &dl_ch_estimates[aarx][5+(symbol*(frame_parms->ofdm_symbol_size))];
      dl_ch1     = &dl_ch_estimates[2+aarx][5+(symbol*(frame_parms->ofdm_symbol_size))];
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    } else {
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      dl_ch0     = &dl_ch_estimates[aarx][5];
      dl_ch1     = &dl_ch_estimates[2+aarx][5];
    }
4982

4983
    pmi_loc = pmi_ext;
4984

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    // pointers to extracted RX signals and channel estimates
    rxF_ext    = &rxdataF_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];
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    dl_ch0_ext = &dl_ch_estimates_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];
    dl_ch1_ext = &dl_ch_estimates_ext[2+aarx][symbol*(frame_parms->N_RB_DL*12)];

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    for (prb=0; prb<frame_parms->N_RB_DL; prb++) {
      skip_half=0;
4992

4993
      if (prb < 32)
4994
        rb_alloc_ind = (rb_alloc[0]>>prb) & 1;
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      else if (prb < 64)
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        rb_alloc_ind = (rb_alloc[1]>>(prb-32)) & 1;
4997
      else if (prb < 96)
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        rb_alloc_ind = (rb_alloc[2]>>(prb-64)) & 1;
4999
      else if (prb < 100)
5000
        rb_alloc_ind = (rb_alloc[3]>>(prb-96)) & 1;
5001
      else
5002
        rb_alloc_ind = 0;
5003 5004 5005

      if (rb_alloc_ind == 1)
          nb_rb++;
5006

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5007 5008 5009

      if ((frame_parms->N_RB_DL&1) == 0) {  // even number of RBs

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        // PBCH
        if ((subframe==0) &&
            (prb>=((frame_parms->N_RB_DL>>1)-3)) &&
            (prb<((frame_parms->N_RB_DL>>1)+3)) &&
            (l>=(nsymb>>1)) &&
            (l<((nsymb>>1) + 4))) {
          rb_alloc_ind = 0;
          //    printf("symbol %d / rb %d: skipping PBCH REs\n",symbol,prb);
        }

        //SSS

        if (((subframe==0)||(subframe==5)) &&
            (prb>=((frame_parms->N_RB_DL>>1)-3)) &&
            (prb<((frame_parms->N_RB_DL>>1)+3)) &&
            (l==sss_symb) ) {
          rb_alloc_ind = 0;
          //    printf("symbol %d / rb %d: skipping SSS REs\n",symbol,prb);
        }



        //PSS in subframe 0/5 if FDD
        if (frame_parms->frame_type == FDD) {  //FDD
          if (((subframe==0)||(subframe==5)) &&
              (prb>=((frame_parms->N_RB_DL>>1)-3)) &&
              (prb<((frame_parms->N_RB_DL>>1)+3)) &&
              (l==pss_symb) ) {
            rb_alloc_ind = 0;
            //    printf("symbol %d / rb %d: skipping PSS REs\n",symbol,prb);
          }
        }

        if ((frame_parms->frame_type == TDD) &&
            (subframe==6)) { //TDD Subframe 6
          if ((prb>=((frame_parms->N_RB_DL>>1)-3)) &&
              (prb<((frame_parms->N_RB_DL>>1)+3)) &&
              (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }
        }

        if (rb_alloc_ind==1) {              // PRB is allocated



          prb_off      = 12*prb;
          prb_off2     = 1+(12*(prb-(frame_parms->N_RB_DL>>1)));
          dl_ch0p    = dl_ch0+(12*prb);
          dl_ch1p    = dl_ch1+(12*prb);
          if (prb<(frame_parms->N_RB_DL>>1)){
            rxF      = &rxdataF[aarx][prb_off+
                                      frame_parms->first_carrier_offset +
                                      (symbol*(frame_parms->ofdm_symbol_size))];
          }
          else {
            rxF      = &rxdataF[aarx][prb_off2+
                                      (symbol*(frame_parms->ofdm_symbol_size))];
          }

         /*
         if (mimo_mode <= PUSCH_PRECODING1)
5072
          *pmi_loc = (pmi>>((prb>>2)<<1))&3;
5073 5074
         else
          *pmi_loc=(pmi>>prb)&1;*/
5075

5076
         *pmi_loc = get_pmi(frame_parms->N_RB_DL,mimo_mode,pmi,prb);
5077
          pmi_loc++;
5078 5079


5080
          if (pilots == 0) {
5081

5082 5083 5084
            memcpy(dl_ch0_ext,dl_ch0p,12*sizeof(int));
            memcpy(dl_ch1_ext,dl_ch1p,12*sizeof(int));
            memcpy(rxF_ext,rxF,12*sizeof(int));
5085 5086 5087
            dl_ch0_ext +=12;
            dl_ch1_ext +=12;
            rxF_ext    +=12;
5088
          } else { // pilots==1
5089 5090 5091 5092 5093 5094 5095 5096
            j=0;
            for (i=0; i<12; i++) {
              if ((i!=frame_parms->nushift) &&
                  (i!=frame_parms->nushift+3) &&
                  (i!=frame_parms->nushift+6) &&
                  (i!=((frame_parms->nushift+9)%12))) {
                rxF_ext[j]=rxF[i];
                //        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
5097 5098
                dl_ch0_ext[j]=dl_ch0p[i];
                dl_ch1_ext[j++]=dl_ch1p[i];
5099 5100
              }
            }
5101 5102 5103
            dl_ch0_ext+=8;
            dl_ch1_ext+=8;
            rxF_ext+=8;
5104 5105
          } // pilots==1

5106
        }
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5107
      } else {  // Odd number of RBs
5108

5109

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5110
      // PBCH
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        if ((subframe==0) &&
            (prb>((frame_parms->N_RB_DL>>1)-3)) &&
            (prb<((frame_parms->N_RB_DL>>1)+3)) &&
            (l>=(nsymb>>1)) &&
            (l<((nsymb>>1) + 4))) {
          rb_alloc_ind = 0;
          //    printf("symbol %d / rb %d: skipping PBCH REs\n",symbol,prb);
        }

        //SSS

        if (((subframe==0)||(subframe==5)) &&
            (prb>((frame_parms->N_RB_DL>>1)-3)) &&
            (prb<((frame_parms->N_RB_DL>>1)+3)) &&
            (l==sss_symb) ) {
          rb_alloc_ind = 0;
          //    printf("symbol %d / rb %d: skipping SSS REs\n",symbol,prb);
        }



        //PSS in subframe 0/5 if FDD
        if (frame_parms->frame_type == FDD) {  //FDD
          if (((subframe==0)||(subframe==5)) &&
              (prb>((frame_parms->N_RB_DL>>1)-3)) &&
              (prb<((frame_parms->N_RB_DL>>1)+3)) &&
              (l==pss_symb) ) {
            rb_alloc_ind = 0;
            //    printf("symbol %d / rb %d: skipping PSS REs\n",symbol,prb);
          }
        }

        if ((frame_parms->frame_type == TDD) &&
            ((subframe==1) || (subframe==6))) { //TDD Subframe 1-6
          if ((prb>((frame_parms->N_RB_DL>>1)-3)) &&
              (prb<((frame_parms->N_RB_DL>>1)+3)) &&
              (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }
        }

        if (rb_alloc_ind == 1) {
          skip_half=0;

          //Check if we have to drop half a PRB due to PSS/SSS/PBCH
          // skip_half == 0 means full PRB
          // skip_half == 1 means first half is used (leftmost half-PRB from PSS/SSS/PBCH)
          // skip_half == 2 means second half is used (rightmost half-PRB from PSS/SSS/PBCH)
          //PBCH subframe 0, symbols nsymb>>1 ... nsymb>>1 + 3
          if ((subframe==0) &&
              (prb==((frame_parms->N_RB_DL>>1)-3)) &&
              (l>=(nsymb>>1)) &&
              (l<((nsymb>>1) + 4)))
            skip_half=1;
          else if ((subframe==0) &&
                   (prb==((frame_parms->N_RB_DL>>1)+3)) &&
                   (l>=(nsymb>>1)) &&
                   (l<((nsymb>>1) + 4)))
            skip_half=2;

          //SSS
          if (((subframe==0)||(subframe==5)) &&
              (prb==((frame_parms->N_RB_DL>>1)-3)) &&
              (l==sss_symb))
            skip_half=1;
          else if (((subframe==0)||(subframe==5)) &&
                   (prb==((frame_parms->N_RB_DL>>1)+3)) &&
                   (l==sss_symb))
            skip_half=2;

          //PSS Subframe 0,5
          if (((frame_parms->frame_type == FDD) &&
               (((subframe==0)||(subframe==5)))) ||  //FDD Subframes 0,5
              ((frame_parms->frame_type == TDD) &&
               (((subframe==1) || (subframe==6))))) { //TDD Subframes 1,6

            if ((prb==((frame_parms->N_RB_DL>>1)-3)) &&
                (l==pss_symb))
              skip_half=1;
            else if ((prb==((frame_parms->N_RB_DL>>1)+3)) &&
                     (l==pss_symb))
              skip_half=2;
          }


          prb_off      = 12*prb;
          prb_off2     = 7+(12*(prb-(frame_parms->N_RB_DL>>1)-1));
          dl_ch0p      = dl_ch0+(12*prb);
          dl_ch1p      = dl_ch1+(12*prb);

          if (prb<=(frame_parms->N_RB_DL>>1)){
            rxF      = &rxdataF[aarx][prb_off+
                                      frame_parms->first_carrier_offset +
                                      (symbol*(frame_parms->ofdm_symbol_size))];
          }
          else {
            rxF      = &rxdataF[aarx][prb_off2+
                                      (symbol*(frame_parms->ofdm_symbol_size))];
          }
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5210
#ifdef DEBUG_DLSCH_DEMOD
5211
          printf("symbol %d / rb %d: alloc %d skip_half %d (rxF %p, rxF_ext %p) prb_off (%d,%d)\n",symbol,prb,rb_alloc_ind,skip_half,rxF,rxF_ext,prb_off,prb_off2);
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5212
#endif
5213
         /* if (mimo_mode <= PUSCH_PRECODING1)
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5214
           *pmi_loc = (pmi>>((prb>>2)<<1))&3;
5215 5216
          else
           *pmi_loc=(pmi>>prb)&1;
5217
         // printf("symbol_mod %d (pilots %d) rb %d, sb %d, pmi %d (pmi_loc %p,rxF %p, ch00 %p, ch01 %p, rxF_ext %p dl_ch0_ext %p dl_ch1_ext %p)\n",symbol_mod,pilots,prb,prb>>2,*pmi_loc,pmi_loc,rxF,dl_ch0, dl_ch1, rxF_ext,dl_ch0_ext,dl_ch1_ext);
5218
*/
5219
         *pmi_loc = get_pmi(frame_parms->N_RB_DL,mimo_mode,pmi,prb);
5220 5221
          pmi_loc++;

5222 5223 5224 5225 5226 5227
          if (prb != (frame_parms->N_RB_DL>>1)) { // This PRB is not around DC
            if (pilots==0) {
              if (skip_half==1) {
                memcpy(dl_ch0_ext,dl_ch0p,6*sizeof(int32_t));
                memcpy(dl_ch1_ext,dl_ch1p,6*sizeof(int32_t));
                memcpy(rxF_ext,rxF,6*sizeof(int32_t));
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5228
#ifdef DEBUG_DLSCH_DEMOD
5229 5230
                for (i=0;i<6;i++)
                  printf("extract rb %d, re %d => (%d,%d)\n",prb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
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#endif
5232 5233 5234 5235 5236 5237 5238
                dl_ch0_ext+=6;
                dl_ch1_ext+=6;
                rxF_ext+=6;
              } else if (skip_half==2) {
                memcpy(dl_ch0_ext,dl_ch0p+6,6*sizeof(int32_t));
                memcpy(dl_ch1_ext,dl_ch1p+6,6*sizeof(int32_t));
                memcpy(rxF_ext,rxF+6,6*sizeof(int32_t));
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5239
#ifdef DEBUG_DLSCH_DEMOD
5240 5241
                for (i=0;i<6;i++)
                  printf("extract rb %d, re %d => (%d,%d)\n",prb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
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5242
#endif
5243 5244 5245 5246 5247 5248 5249
                dl_ch0_ext+=6;
                dl_ch1_ext+=6;
                rxF_ext+=6;
              } else {  // skip_half==0
                memcpy(dl_ch0_ext,dl_ch0p,12*sizeof(int32_t));
                memcpy(dl_ch1_ext,dl_ch1p,12*sizeof(int32_t));
                memcpy(rxF_ext,rxF,12*sizeof(int32_t));
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5250
#ifdef DEBUG_DLSCH_DEMOD
5251 5252
                for (i=0;i<12;i++)
                  printf("extract rb %d, re %d => (%d,%d)\n",prb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
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5253
#endif
5254 5255 5256 5257 5258 5259 5260 5261 5262 5263 5264 5265
                dl_ch0_ext+=12;
                dl_ch1_ext+=12;
                rxF_ext+=12;
              }
            } else { // pilots=1
              j=0;

              if (skip_half==1) {
                for (i=0; i<6; i++) {
                  if ((i!=frame_parms->nushift) &&
                      (i!=((frame_parms->nushift+3)%6))) {
                    rxF_ext[j]=rxF[i];
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5266
#ifdef DEBUG_DLSCH_DEMOD
5267
                    printf("(pilots,skip1)extract rb %d, re %d (%d)=> (%d,%d)\n",prb,i,j,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
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#endif
5269 5270 5271 5272 5273 5274 5275 5276 5277 5278 5279 5280
                    dl_ch0_ext[j]=dl_ch0p[i];
                    dl_ch1_ext[j++]=dl_ch1p[i];
                  }
                }
                dl_ch0_ext+=4;
                dl_ch1_ext+=4;
                rxF_ext+=4;
              } else if (skip_half==2) {
                for (i=0; i<6; i++) {
                  if ((i!=frame_parms->nushift) &&
                      (i!=((frame_parms->nushift+3)%6))) {
                    rxF_ext[j]=rxF[(i+6)];
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5281
#ifdef DEBUG_DLSCH_DEMOD
5282
                    printf("(pilots,skip2)extract rb %d, re %d (%d) => (%d,%d)\n",prb,i,j,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
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#endif
5284 5285 5286 5287 5288 5289 5290 5291 5292 5293 5294 5295 5296 5297 5298
                    dl_ch0_ext[j]=dl_ch0p[i+6];
                    dl_ch1_ext[j++]=dl_ch1p[i+6];
                  }
                }
                dl_ch0_ext+=4;
                dl_ch1_ext+=4;
                rxF_ext+=4;

              } else { //skip_half==0
                for (i=0; i<12; i++) {
                  if ((i!=frame_parms->nushift) &&
                      (i!=frame_parms->nushift+3) &&
                      (i!=frame_parms->nushift+6) &&
                      (i!=((frame_parms->nushift+9)%12))) {
                    rxF_ext[j]=rxF[i];
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5299
#ifdef DEBUG_DLSCH_DEMOD
5300
                    printf("(pilots)extract rb %d, re %d => (%d,%d)\n",prb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
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5301
#endif
5302 5303 5304 5305 5306 5307 5308 5309 5310 5311 5312 5313 5314 5315 5316
                    dl_ch0_ext[j]  =dl_ch0p[i];
                    dl_ch1_ext[j++]=dl_ch1p[i];
                  }
                }
                dl_ch0_ext+=8;
                dl_ch1_ext+=8;
                rxF_ext+=8;
              } //skip_half==0
            } //pilots==1
          } else {       // Do middle RB (around DC)

            if (pilots==0) {
              memcpy(dl_ch0_ext,dl_ch0p,6*sizeof(int32_t));
              memcpy(dl_ch1_ext,dl_ch1p,6*sizeof(int32_t));
              memcpy(rxF_ext,rxF,6*sizeof(int32_t));
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5317
#ifdef DEBUG_DLSCH_DEMOD
5318 5319 5320
              for (i=0; i<6; i++) {
                printf("extract rb %d, re %d => (%d,%d)\n",prb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
              }
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#endif
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              rxF_ext+=6;
              dl_ch0_ext+=6;
              dl_ch1_ext+=6;
              dl_ch0p+=6;
              dl_ch1p+=6;
5327

5328
              rxF       = &rxdataF[aarx][1+((symbol*(frame_parms->ofdm_symbol_size)))];
5329

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              memcpy(dl_ch0_ext,dl_ch0p,6*sizeof(int32_t));
              memcpy(dl_ch1_ext,dl_ch1p,6*sizeof(int32_t));
              memcpy(rxF_ext,rxF,6*sizeof(int32_t));
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5333
#ifdef DEBUG_DLSCH_DEMOD
5334 5335 5336
              for (i=0; i<6; i++) {
                printf("extract rb %d, re %d => (%d,%d)\n",prb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
              }
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5337
#endif
5338 5339 5340 5341 5342 5343 5344 5345 5346 5347 5348 5349
              rxF_ext+=6;
              dl_ch0_ext+=6;
              dl_ch1_ext+=6;
            } else { // pilots==1
              j=0;

              for (i=0; i<6; i++) {
                if ((i!=frame_parms->nushift) &&
                    (i!=((frame_parms->nushift+3)%6))) {
                  dl_ch0_ext[j]=dl_ch0p[i];
                  dl_ch1_ext[j]=dl_ch1p[i];
                  rxF_ext[j++]=rxF[i];
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5350
#ifdef DEBUG_DLSCH_DEMOD
5351
                  printf("(pilots)extract rb %d, re %d (%d) => (%d,%d)\n",prb,i,j,*(short *)&rxF[i],*(1+(short*)&rxF[i]));
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5352
#endif
5353 5354 5355 5356 5357 5358 5359 5360 5361 5362
                }
              }
              rxF       = &rxdataF[aarx][1+symbol*(frame_parms->ofdm_symbol_size)];

              for (; i<12; i++) {
                if ((i!=((frame_parms->nushift+6)%12)) &&
                    (i!=((frame_parms->nushift+9)%12))) {
                  dl_ch0_ext[j]=dl_ch0p[i];
                  dl_ch1_ext[j]=dl_ch1p[i];
                  rxF_ext[j++]=rxF[i-6];
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5363
#ifdef DEBUG_DLSCH_DEMOD
5364
                  printf("(pilots)extract rb %d, re %d (%d) => (%d,%d)\n",prb,i,j,*(short *)&rxF[1+i-6],*(1+(short*)&rxF[1+i-6]));
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5365
#endif
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                }
              }

              dl_ch0_ext+=8;
              dl_ch1_ext+=8;
              rxF_ext+=8;
            } //pilots==1
          }  // if Middle PRB
        } // if odd PRB
5375
      } // if rballoc==1
5376
    } // for prb
5377
  } // for aarx
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  return(nb_rb/frame_parms->nb_antennas_rx);
}

5381 5382 5383 5384 5385 5386 5387 5388 5389 5390
unsigned short dlsch_extract_rbs_TM7(int **rxdataF,
                                     int **dl_bf_ch_estimates,
                                     int **rxdataF_ext,
                                     int **dl_bf_ch_estimates_ext,
                                     unsigned int *rb_alloc,
                                     unsigned char symbol,
                                     unsigned char subframe,
                                     uint32_t high_speed_flag,
                                     LTE_DL_FRAME_PARMS *frame_parms)
{
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  unsigned short rb,nb_rb=0;
  unsigned char rb_alloc_ind;
  unsigned char i,aarx,l,nsymb,skip_half=0,sss_symb,pss_symb=0;
  int *dl_ch0,*dl_ch0_ext,*rxF,*rxF_ext;
5396

5397 5398
  unsigned char symbol_mod,pilots=0,uespec_pilots=0,j=0,poffset=0,uespec_poffset=0;
  int8_t uespec_nushift = frame_parms->Nid_cell%3;
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  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
  pilots = ((symbol_mod==0)||(symbol_mod==(4-frame_parms->Ncp))) ? 1 : 0;
  l=symbol;
  nsymb = (frame_parms->Ncp==NORMAL) ? 14:12;
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  if (frame_parms->Ncp==0){
    if (symbol==3 || symbol==6 || symbol==9 || symbol==12)
      uespec_pilots = 1;
  } else{
    if (symbol==4 || symbol==7 || symbol==10)
      uespec_pilots = 1;
  }
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  if (frame_parms->frame_type == TDD) {// TDD
    sss_symb = nsymb-1;
    pss_symb = 2;
  } else {
    sss_symb = (nsymb>>1)-2;
    pss_symb = (nsymb>>1)-1;
5419
  }
5420

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  if (symbol_mod==(4-frame_parms->Ncp))
    poffset=3;
5423

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  if ((frame_parms->Ncp==0 && (symbol==6 ||symbol ==12)) || (frame_parms->Ncp==1 && symbol==7))
    uespec_poffset=2;
5426

5427
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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    if (high_speed_flag == 1)
      dl_ch0     = &dl_bf_ch_estimates[aarx][symbol*(frame_parms->ofdm_symbol_size)];
    else
      dl_ch0     = &dl_bf_ch_estimates[aarx][0];

    dl_ch0_ext = &dl_bf_ch_estimates_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];

    rxF_ext    = &rxdataF_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];
    rxF        = &rxdataF[aarx][(frame_parms->first_carrier_offset + (symbol*(frame_parms->ofdm_symbol_size)))];
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    if ((frame_parms->N_RB_DL&1) == 0)  // even number of RBs
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      for (rb=0; rb<frame_parms->N_RB_DL; rb++) {

        if (rb < 32)
          rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
        else if (rb < 64)
          rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
        else if (rb < 96)
          rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
        else if (rb < 100)
          rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
        else
          rb_alloc_ind = 0;

5453
  if (rb_alloc_ind == 1)
5454 5455
          nb_rb++;

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        // For second half of RBs skip DC carrier
        if (rb==(frame_parms->N_RB_DL>>1)) {
          rxF       = &rxdataF[aarx][(1 + (symbol*(frame_parms->ofdm_symbol_size)))];
          //dl_ch0++;
        }
5461

5462 5463 5464 5465 5466 5467 5468 5469 5470 5471 5472 5473 5474 5475 5476 5477 5478 5479 5480 5481 5482 5483 5484 5485
        // PBCH
        if ((subframe==0) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l>=nsymb>>1) && (l<((nsymb>>1) + 4))) {
          rb_alloc_ind = 0;
        }

        //SSS
        if (((subframe==0)||(subframe==5)) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==sss_symb) ) {
          rb_alloc_ind = 0;
        }


        if (frame_parms->frame_type == FDD) {
          //PSS
          if (((subframe==0)||(subframe==5)) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }
        }

        if ((frame_parms->frame_type == TDD) &&
            (subframe==6)) { //TDD Subframe 6
          if ((rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }
        }
5486

5487
        if (rb_alloc_ind==1) {
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5489 5490 5491 5492 5493 5494 5495 5496
          /*
              printf("rb %d\n",rb);
              for (i=0;i<12;i++)
              printf("(%d %d)",((short *)dl_ch0)[i<<1],((short*)dl_ch0)[1+(i<<1)]);
              printf("\n");
          */
          if (pilots==0 && uespec_pilots==0) {
            memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));
5497

5498 5499 5500
            for (i=0; i<12; i++) {
              rxF_ext[i]=rxF[i];
            }
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5502 5503 5504 5505
            dl_ch0_ext+=12;
            rxF_ext+=12;
          } else if(pilots==1 && uespec_pilots==0) {
            j=0;
5506 5507 5508 5509 5510 5511 5512 5513 5514 5515 5516 5517 5518 5519

            for (i=0; i<12; i++) {
              if ((i!=(frame_parms->nushift+poffset)) &&
                  (i!=((frame_parms->nushift+poffset+6)%12))) {
                rxF_ext[j]=rxF[i];
                dl_ch0_ext[j++]=dl_ch0[i];
              }
            }

            dl_ch0_ext+=10;
            rxF_ext+=10;

          } else if (pilots==0 && uespec_pilots==1) {
            j=0;
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5520

5521

5522
      for (i=0; i<12; i++){
5523
              if (frame_parms->Ncp==0){
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                if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
      rxF_ext[j] = rxF[i];
                  dl_ch0_ext[j++]=dl_ch0[i];
5527 5528
                }
              } else{
5529 5530
                if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
      rxF_ext[j] = rxF[i];
5531
                  dl_ch0_ext[j++]=dl_ch0[i];
5532
                }
5533
              }
5534 5535 5536

      }

5537
            dl_ch0_ext+=9-frame_parms->Ncp;
5538
            rxF_ext+=9-frame_parms->Ncp;
5539 5540

          } else {
5541
            LOG_E(PHY,"dlsch_extract_rbs_TM7(dl_demodulation.c):pilot or ue spec pilot detection error\n");
5542 5543 5544 5545 5546 5547 5548 5549 5550 5551 5552 5553 5554 5555 5556 5557 5558 5559 5560 5561 5562 5563 5564 5565
            exit(-1);
          }

        }

        dl_ch0+=12;
        rxF+=12;

      }
    else {  // Odd number of RBs
      for (rb=0; rb<frame_parms->N_RB_DL>>1; rb++) {
        skip_half=0;

        if (rb < 32)
          rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
        else if (rb < 64)
          rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
        else if (rb < 96)
          rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
        else if (rb < 100)
          rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
        else
          rb_alloc_ind = 0;

5566 5567
        if (rb_alloc_ind == 1)
          nb_rb++;
5568 5569 5570 5571 5572 5573 5574 5575 5576 5577 5578 5579 5580 5581 5582 5583 5584 5585 5586 5587 5588 5589 5590 5591 5592 5593 5594 5595 5596 5597 5598 5599 5600 5601 5602 5603 5604 5605 5606 5607 5608 5609 5610

        // PBCH
        if ((subframe==0) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4))) {
          rb_alloc_ind = 0;
        }

        //PBCH subframe 0, symbols nsymb>>1 ... nsymb>>1 + 3
        if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
          skip_half=1;
        else if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
          skip_half=2;

        //SSS

        if (((subframe==0)||(subframe==5)) &&
            (rb>((frame_parms->N_RB_DL>>1)-3)) &&
            (rb<((frame_parms->N_RB_DL>>1)+3)) &&
            (l==sss_symb) ) {
          rb_alloc_ind = 0;
        }

        //SSS
        if (((subframe==0)||(subframe==5)) &&
            (rb==((frame_parms->N_RB_DL>>1)-3)) &&
            (l==sss_symb))
          skip_half=1;
        else if (((subframe==0)||(subframe==5)) &&
                 (rb==((frame_parms->N_RB_DL>>1)+3)) &&
                 (l==sss_symb))
          skip_half=2;

        //PSS in subframe 0/5 if FDD
        if (frame_parms->frame_type == FDD) {  //FDD
          if (((subframe==0)||(subframe==5)) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }

          if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
            skip_half=1;
          else if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
            skip_half=2;
        }

5611
        if ((frame_parms->frame_type == TDD) && ((subframe==1)||(subframe==6))) { //TDD Subframe 1 and 6
5612 5613 5614 5615 5616 5617 5618 5619 5620 5621 5622 5623
          if ((rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }

          if ((rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
            skip_half=1;
          else if ((rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
            skip_half=2;
        }


        if (rb_alloc_ind==1) {
5624 5625 5626
#ifdef DEBUG_DLSCH_DEMOD
          printf("rb %d/symbol %d pilots %d, uespec_pilots %d, (skip_half %d)\n",rb,l,pilots,uespec_pilots,skip_half);
#endif
5627 5628

          if (pilots==0 && uespec_pilots==0) {
5629
            //printf("Extracting w/o pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
5630 5631 5632 5633

            if (skip_half==1) {
              memcpy(dl_ch0_ext,dl_ch0,6*sizeof(int));

5634
              for (i=0; i<6; i++) {
5635
                rxF_ext[i]=rxF[i];
5636
#ifdef DEBUG_DLSCH_DEMOD
5637
    printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5638 5639
#endif
              }
5640 5641 5642 5643 5644 5645

              dl_ch0_ext+=6;
              rxF_ext+=6;
            } else if (skip_half==2) {
              memcpy(dl_ch0_ext,dl_ch0+6,6*sizeof(int));

5646
              for (i=0; i<6; i++) {
5647
                rxF_ext[i]=rxF[(i+6)];
5648
#ifdef DEBUG_DLSCH_DEMOD
5649
    printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5650 5651
#endif
              }
5652 5653 5654 5655 5656 5657

              dl_ch0_ext+=6;
              rxF_ext+=6;
            } else {
              memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));

5658
              for (i=0; i<12; i++){
5659
                rxF_ext[i]=rxF[i];
5660 5661 5662
#ifdef DEBUG_DLSCH_DEMOD
                printf("extract rb %d, re %d => (%d,%d)\n",symbol,rb,i,*(short *)&rxF[i],*(1+(short*)&rxF[i]));
#endif
5663
              }
5664 5665 5666
              dl_ch0_ext+=12;
              rxF_ext+=12;
            }
5667
          } else if (pilots==1 && uespec_pilots==0) {
5668 5669 5670 5671 5672 5673 5674 5675
            // printf("Extracting with pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
            j=0;

            if (skip_half==1) {
              for (i=0; i<6; i++) {
                if (i!=((frame_parms->nushift+poffset)%6)) {
                  rxF_ext[j]=rxF[i];
                  dl_ch0_ext[j++]=dl_ch0[i];
5676
#ifdef DEBUG_DLSCH_DEMOD
5677
    printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5678
#endif
5679 5680 5681 5682 5683 5684 5685 5686 5687 5688
                }
              }

              dl_ch0_ext+=5;
              rxF_ext+=5;
            } else if (skip_half==2) {
              for (i=0; i<6; i++) {
                if (i!=((frame_parms->nushift+poffset)%6)) {
                  rxF_ext[j]=rxF[(i+6)];
                  dl_ch0_ext[j++]=dl_ch0[i+6];
5689
#ifdef DEBUG_DLSCH_DEMOD
5690
    printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5691
#endif
5692 5693 5694 5695 5696 5697 5698 5699 5700 5701
                }
              }

              dl_ch0_ext+=5;
              rxF_ext+=5;
            } else {
              for (i=0; i<12; i++) {
                if ((i!=(frame_parms->nushift+poffset)) &&
                    (i!=((frame_parms->nushift+poffset+6)%12))) {
                  rxF_ext[j]=rxF[i];
5702 5703 5704
#ifdef DEBUG_DLSCH_DEMOD
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
#endif
5705 5706 5707 5708 5709 5710 5711 5712 5713 5714 5715 5716 5717 5718 5719 5720 5721 5722
                  dl_ch0_ext[j++]=dl_ch0[i];

                }
              }

              dl_ch0_ext+=10;
              rxF_ext+=10;
            }
          } else if(pilots==0 && uespec_pilots==1){
            //printf("Extracting with uespec pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
            j=0;

            if (skip_half==1) {
              if (frame_parms->Ncp==0){
                for (i=0; i<6; i++) {
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
                    rxF_ext[j]=rxF[i];
                    dl_ch0_ext[j++]=dl_ch0[i];
5723
#ifdef DEBUG_DLSCH_DEMOD
5724
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5725
#endif
5726 5727 5728 5729 5730 5731 5732
                  }
                }
                dl_ch0_ext+=6-(uespec_nushift+uespec_poffset<6)-(uespec_nushift+uespec_poffset+4<6)-((uespec_nushift+uespec_poffset+8)%12<6);
                rxF_ext+=6-(uespec_nushift+uespec_poffset<6)-(uespec_nushift+uespec_poffset+4<6)-((uespec_nushift+uespec_poffset+8)%12<6);

              } else{
                for (i=0; i<6; i++) {
5733
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
5734 5735
                    rxF_ext[j]=rxF[i];
                    dl_ch0_ext[j++]=dl_ch0[i];
5736
#ifdef DEBUG_DLSCH_DEMOD
5737
        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5738
#endif
5739 5740 5741 5742 5743 5744 5745 5746 5747 5748 5749 5750
                  }
                }
                dl_ch0_ext+=4;
                rxF_ext+=4;
              }

            } else if (skip_half==2) {
              if(frame_parms->Ncp==0){
                for (i=0; i<6; i++) {
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
                    rxF_ext[j]=rxF[(i+6)];
                    dl_ch0_ext[j++]=dl_ch0[i+6];
5751
#ifdef DEBUG_DLSCH_DEMOD
5752
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5753
#endif
5754 5755 5756 5757 5758 5759 5760
                  }
                }
                dl_ch0_ext+=6-(uespec_nushift+uespec_poffset>6)-(uespec_nushift+uespec_poffset+4>6)-((uespec_nushift+uespec_poffset+8)%12>6);
                rxF_ext+=6-(uespec_nushift+uespec_poffset>6)-(uespec_nushift+uespec_poffset+4>6)-((uespec_nushift+uespec_poffset+8)%12>6);

              } else {
                for (i=0; i<6; i++) {
5761
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
5762 5763
                    rxF_ext[j]=rxF[(i+6)];
                    dl_ch0_ext[j++]=dl_ch0[i+6];
5764
#ifdef DEBUG_DLSCH_DEMOD
5765
        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5766
#endif
5767 5768 5769 5770 5771 5772 5773 5774
                  }
                }
                dl_ch0_ext+=4;
                rxF_ext+=4;
              }

            } else {

5775
        for (i=0; i<12; i++){
5776 5777
                if (frame_parms->Ncp==0){
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
5778 5779
              rxF_ext[j] = rxF[i];
                    dl_ch0_ext[j++] = dl_ch0[i];
5780 5781 5782
#ifdef DEBUG_DLSCH_DEMOD
                    printf("extract rb %d, re %d, j %d => (%d,%d)\n",symbol,rb,i,j-1,*(short *)&dl_ch0[j],*(1+(short*)&dl_ch0[i]));
#endif
5783 5784
                  }
                } else{
5785 5786 5787
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
              rxF_ext[j] = rxF[i];
                    dl_ch0_ext[j++]=dl_ch0[i];
5788
#ifdef DEBUG_DLSCH_DEMOD
5789
        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5790
#endif
5791
                  }
5792
                }
5793 5794 5795

        }

5796
              dl_ch0_ext+=9-frame_parms->Ncp;
5797 5798 5799
              rxF_ext+=9-frame_parms->Ncp;
      }

5800
          } else {
5801
            LOG_E(PHY,"dlsch_extract_rbs_TM7(dl_demodulation.c):pilot or ue spec pilot detection error\n");
5802
            exit(-1);
5803

5804 5805 5806 5807 5808 5809 5810 5811 5812 5813 5814 5815 5816 5817 5818 5819 5820 5821 5822 5823
          }
        }

        dl_ch0+=12;
        rxF+=12;
      } // first half loop


      // Do middle RB (around DC)
      if (rb < 32)
        rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
      else if (rb < 64)
        rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
      else if (rb < 96)
        rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
      else if (rb < 100)
        rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
      else
        rb_alloc_ind = 0;

5824 5825
      if (rb_alloc_ind == 1)
        nb_rb++;
5826 5827 5828 5829 5830 5831 5832 5833 5834 5835 5836 5837 5838 5839 5840 5841 5842 5843

      // PBCH
      if ((subframe==0) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4))) {
        rb_alloc_ind = 0;
      }

      //SSS
      if (((subframe==0)||(subframe==5)) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==sss_symb) ) {
        rb_alloc_ind = 0;
      }

      if (frame_parms->frame_type == FDD) {
        //PSS
        if (((subframe==0)||(subframe==5)) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
          rb_alloc_ind = 0;
        }
      }

5844
      if ((frame_parms->frame_type == TDD) && ((subframe==1)||(subframe==6))) {
5845 5846 5847 5848 5849 5850 5851 5852 5853 5854 5855 5856 5857 5858
        //PSS
        if ((rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
          rb_alloc_ind = 0;
        }
      }

      //printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
      //printf("DC rb %d (%p)\n",rb,rxF);
      if (rb_alloc_ind==1) {
        //printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
        if (pilots==0 && uespec_pilots==0) {
          for (i=0; i<6; i++) {
            dl_ch0_ext[i]=dl_ch0[i];
            rxF_ext[i]=rxF[i];
5859
#ifdef DEBUG_DLSCH_DEMOD
5860
      printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5861
#endif
5862 5863 5864 5865 5866 5867 5868
          }

          rxF       = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];

          for (; i<12; i++) {
            dl_ch0_ext[i]=dl_ch0[i];
            rxF_ext[i]=rxF[(1+i-6)];
5869
#ifdef DEBUG_DLSCH_DEMOD
5870
      printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5871
#endif
5872 5873 5874 5875 5876 5877 5878 5879 5880 5881 5882
          }

          dl_ch0_ext+=12;
          rxF_ext+=12;
        } else if(pilots==1 && uespec_pilots==0){ // pilots==1
          j=0;

          for (i=0; i<6; i++) {
            if (i!=((frame_parms->nushift+poffset)%6)) {
              dl_ch0_ext[j]=dl_ch0[i];
              rxF_ext[j++]=rxF[i];
5883
#ifdef DEBUG_DLSCH_DEMOD
5884
        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5885
#endif
5886 5887 5888 5889 5890 5891 5892 5893 5894
            }
          }

          rxF       = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];

          for (; i<12; i++) {
            if (i!=((frame_parms->nushift+6+poffset)%12)) {
              dl_ch0_ext[j]=dl_ch0[i];
              rxF_ext[j++]=rxF[(1+i-6)];
5895
#ifdef DEBUG_DLSCH_DEMOD
5896
        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5897
#endif
5898 5899 5900 5901 5902 5903 5904 5905
            }
          }

          dl_ch0_ext+=10;
          rxF_ext+=10;
        } else if(pilots==0 && uespec_pilots==1) {
          j=0;

5906
    for (i=0; i<6; i++) {
5907
            if (frame_parms->Ncp==0){
5908 5909 5910
              if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
                dl_ch0_ext[j]=dl_ch0[i];
          rxF_ext[j++] = rxF[i];
5911
#ifdef DEBUG_DLSCH_DEMOD
5912
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5913
#endif
5914 5915 5916
              }
            } else {
              if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
5917 5918
                dl_ch0_ext[j]=dl_ch0[i];
          rxF_ext[j++] = rxF[i];
5919
#ifdef DEBUG_DLSCH_DEMOD
5920
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5921
#endif
5922 5923
              }
            }
5924 5925
    }

5926 5927 5928 5929
          rxF       = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];

          for (; i<12; i++) {
            if (frame_parms->Ncp==0){
5930
              if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
5931 5932
                dl_ch0_ext[j]=dl_ch0[i];
                rxF_ext[j++]=rxF[(1+i-6)];
5933
#ifdef DEBUG_DLSCH_DEMOD
5934
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5935
#endif
5936 5937 5938
              }
            } else {
              if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
5939 5940
                dl_ch0_ext[j]=dl_ch0[i];
          rxF_ext[j++] = rxF[(1+i-6)];
5941
#ifdef DEBUG_DLSCH_DEMOD
5942
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5943
#endif
5944 5945 5946
              }
            }
          }
5947

5948
          dl_ch0_ext+=9-frame_parms->Ncp;
5949 5950 5951
          rxF_ext+=9-frame_parms->Ncp;

  }// symbol_mod==0
5952 5953 5954 5955 5956 5957 5958 5959 5960 5961 5962 5963 5964 5965 5966 5967 5968 5969 5970 5971 5972 5973 5974 5975 5976 5977

      } // rballoc==1
      else {
        rxF       = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];
      }

      dl_ch0+=12;
      rxF+=7;
      rb++;

      for (; rb<frame_parms->N_RB_DL; rb++) {
        //  printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
        //  printf("rb %d (%p)\n",rb,rxF);
        skip_half=0;

        if (rb < 32)
          rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
        else if (rb < 64)
          rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
        else if (rb < 96)
          rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
        else if (rb < 100)
          rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
        else
          rb_alloc_ind = 0;

5978 5979
        if (rb_alloc_ind==1)
          nb_rb++;
5980 5981 5982 5983 5984 5985 5986 5987 5988 5989 5990 5991 5992 5993 5994 5995 5996 5997 5998 5999 6000 6001 6002

        // PBCH
        if ((subframe==0) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l>=nsymb>>1) && (l<((nsymb>>1) + 4))) {
          rb_alloc_ind = 0;
        }

        //PBCH subframe 0, symbols nsymb>>1 ... nsymb>>1 + 3
        if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
          skip_half=1;
        else if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
          skip_half=2;

        //SSS
        if (((subframe==0)||(subframe==5)) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==sss_symb) ) {
          rb_alloc_ind = 0;
        }

        //SSS
        if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l==sss_symb))
          skip_half=1;
        else if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l==sss_symb))
          skip_half=2;

6003
        //PSS
6004 6005 6006 6007 6008 6009 6010 6011 6012 6013 6014
        if (frame_parms->frame_type == FDD) {
          if (((subframe==0)||(subframe==5)) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }

          if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
            skip_half=1;
          else if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
            skip_half=2;
        }

6015
        if ((frame_parms->frame_type == TDD) && ((subframe==1)||(subframe==6))) { //TDD Subframe 1 and 6
6016 6017 6018 6019 6020 6021 6022 6023 6024 6025 6026
          if ((rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }

          if ((rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
            skip_half=1;
          else if ((rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
            skip_half=2;
        }

        if (rb_alloc_ind==1) {
6027 6028 6029
#ifdef DEBUG_DLSCH_DEMOD
           printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
#endif
6030 6031 6032 6033 6034 6035 6036 6037 6038 6039 6040
          /*
              printf("rb %d\n",rb);
            for (i=0;i<12;i++)
            printf("(%d %d)",((short *)dl_ch0)[i<<1],((short*)dl_ch0)[1+(i<<1)]);
            printf("\n");
          */
          if (pilots==0 && uespec_pilots==0) {
            //printf("Extracting w/o pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
            if (skip_half==1) {
              memcpy(dl_ch0_ext,dl_ch0,6*sizeof(int));

6041
              for (i=0; i<6; i++) {
6042
                rxF_ext[i]=rxF[i];
6043
#ifdef DEBUG_DLSCH_DEMOD
6044
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6045 6046
#endif
              }
6047 6048 6049 6050 6051 6052 6053

              dl_ch0_ext+=6;
              rxF_ext+=6;

            } else if (skip_half==2) {
              memcpy(dl_ch0_ext,dl_ch0+6,6*sizeof(int));

6054
              for (i=0; i<6; i++) {
6055
                rxF_ext[i]=rxF[i+6];
6056
#ifdef DEBUG_DLSCH_DEMOD
6057
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6058 6059
#endif
              }
6060 6061 6062 6063 6064 6065

              dl_ch0_ext+=6;
              rxF_ext+=6;

            } else {
              memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));
6066
              //printf("symbol %d, extract rb %d, => (%d,%d)\n",symbol,rb,*(short *)&dl_ch0[j],*(1+(short*)&dl_ch0[i]));
6067

6068
              for (i=0; i<12; i++) {
6069
                rxF_ext[i]=rxF[i];
6070
#ifdef DEBUG_DLSCH_DEMOD
6071
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6072 6073
#endif
              }
6074 6075 6076 6077 6078 6079 6080 6081 6082 6083 6084 6085 6086

              dl_ch0_ext+=12;
              rxF_ext+=12;
            }
          } else if (pilots==1 && uespec_pilots==0){
            //printf("Extracting with pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
            j=0;

            if (skip_half==1) {
              for (i=0; i<6; i++) {
                if (i!=((frame_parms->nushift+poffset)%6)) {
                  rxF_ext[j]=rxF[i];
                  dl_ch0_ext[j++]=dl_ch0[i];
6087
#ifdef DEBUG_DLSCH_DEMOD
6088
            printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6089
#endif
6090 6091 6092 6093 6094 6095 6096 6097 6098 6099
                }
              }

              dl_ch0_ext+=5;
              rxF_ext+=5;
            } else if (skip_half==2) {
              for (i=0; i<6; i++) {
                if (i!=((frame_parms->nushift+poffset)%6)) {
                  rxF_ext[j]=rxF[(i+6)];
                  dl_ch0_ext[j++]=dl_ch0[i+6];
6100
#ifdef DEBUG_DLSCH_DEMOD
6101
            printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6102
#endif
6103 6104 6105 6106 6107 6108 6109 6110 6111 6112
                }
              }

              dl_ch0_ext+=5;
              rxF_ext+=5;
            } else {
              for (i=0; i<12; i++) {
                if ((i!=(frame_parms->nushift+poffset)) &&
                    (i!=((frame_parms->nushift+poffset+6)%12))) {
                  rxF_ext[j]=rxF[i];
6113 6114 6115
#ifdef DEBUG_DLSCH_DEMOD
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
#endif
6116 6117 6118 6119 6120 6121 6122 6123 6124 6125 6126 6127 6128 6129 6130 6131
                  dl_ch0_ext[j++]=dl_ch0[i];
                }
              }

              dl_ch0_ext+=10;
              rxF_ext+=10;
            }
          } else if(pilots==0 && uespec_pilots==1) {
            j=0;

            if (skip_half==1) {
              if (frame_parms->Ncp==0){
                for (i=0; i<6; i++) {
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
                    rxF_ext[j]=rxF[i];
                    dl_ch0_ext[j++]=dl_ch0[i];
6132
#ifdef DEBUG_DLSCH_DEMOD
6133
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6134
#endif
6135 6136 6137 6138 6139 6140 6141
                  }
                }
                dl_ch0_ext+=6-(uespec_nushift+uespec_poffset<6)-(uespec_nushift+uespec_poffset+4<6)-((uespec_nushift+uespec_poffset+8)%12<6);
                rxF_ext+=6-(uespec_nushift+uespec_poffset<6)-(uespec_nushift+uespec_poffset+4<6)-((uespec_nushift+uespec_poffset+8)%12<6);

              } else{
                for (i=0; i<6; i++) {
6142
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
6143 6144
                    rxF_ext[j]=rxF[i];
                    dl_ch0_ext[j++]=dl_ch0[i];
6145
#ifdef DEBUG_DLSCH_DEMOD
6146
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6147
#endif
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                  }
                }
                dl_ch0_ext+=4;
                rxF_ext+=4;
              }

            } else if (skip_half==2) {
              if(frame_parms->Ncp==0){
                for (i=0; i<6; i++) {
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
6158
                    rxF_ext[j]=rxF[i+6];
6159
                    dl_ch0_ext[j++]=dl_ch0[i+6];
6160
#ifdef DEBUG_DLSCH_DEMOD
6161
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6162
#endif
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                  }
                }
                dl_ch0_ext+=6-(uespec_nushift+uespec_poffset>6)-(uespec_nushift+uespec_poffset+4>6)-((uespec_nushift+uespec_poffset+8)%12>6);
                rxF_ext+=6-(uespec_nushift+uespec_poffset>6)-(uespec_nushift+uespec_poffset+4>6)-((uespec_nushift+uespec_poffset+8)%12>6);

              } else {
                for (i=0; i<6; i++) {
6170
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
6171 6172
                    rxF_ext[j]=rxF[(i+6)];
                    dl_ch0_ext[j++]=dl_ch0[i+6];
6173
#ifdef DEBUG_DLSCH_DEMOD
6174
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6175
#endif
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                  }
                }
                dl_ch0_ext+=4;
                rxF_ext+=4;
              }

            } else {
6183
        for (i=0; i<12; i++){
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                if (frame_parms->Ncp==0){
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
6186 6187
              rxF_ext[j] = rxF[i];
                    dl_ch0_ext[j++]=dl_ch0[i];
6188
#ifdef DEBUG_DLSCH_DEMOD
6189
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6190
#endif
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                  }
                } else{
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                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
              rxF_ext[j] = rxF[i];
                    dl_ch0_ext[j++]=dl_ch0[i];
6196
#ifdef DEBUG_DLSCH_DEMOD
6197
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6198
#endif
6199 6200
                  }
                }
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        }

6203
              dl_ch0_ext+=9-frame_parms->Ncp;
6204
              rxF_ext+=9-frame_parms->Ncp;
6205 6206

            }
6207

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          }// pilots=0
        }

        dl_ch0+=12;
        rxF+=12;
      }
    }
  }

  _mm_empty();
  _m_empty();

  return(nb_rb/frame_parms->nb_antennas_rx);
}

//==============================================================================================

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6225
void dump_dlsch2(PHY_VARS_UE *ue,uint8_t eNB_id,uint8_t subframe,unsigned int *coded_bits_per_codeword,int round,  unsigned char harq_pid)
6226
{
6227
  unsigned int nsymb = (ue->frame_parms.Ncp == 0) ? 14 : 12;
6228
  char fname[32],vname[32];
6229
  int N_RB_DL=ue->frame_parms.N_RB_DL;
6230 6231 6232

  sprintf(fname,"dlsch%d_rxF_r%d_ext0.m",eNB_id,round);
  sprintf(vname,"dl%d_rxF_r%d_ext0",eNB_id,round);
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6233
  LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->rxdataF_ext[0],12*N_RB_DL*nsymb,1,1);
6234

6235
  if (ue->frame_parms.nb_antennas_rx >1) {
6236 6237
    sprintf(fname,"dlsch%d_rxF_r%d_ext1.m",eNB_id,round);
    sprintf(vname,"dl%d_rxF_r%d_ext1",eNB_id,round);
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6238
    LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->rxdataF_ext[1],12*N_RB_DL*nsymb,1,1);
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  }

  sprintf(fname,"dlsch%d_ch_r%d_ext00.m",eNB_id,round);
  sprintf(vname,"dl%d_ch_r%d_ext00",eNB_id,round);
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6243
  LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_ch_estimates_ext[0],12*N_RB_DL*nsymb,1,1);
6244

6245
  if (ue->transmission_mode[eNB_id]==7){
6246 6247
    sprintf(fname,"dlsch%d_bf_ch_r%d.m",eNB_id,round);
    sprintf(vname,"dl%d_bf_ch_r%d",eNB_id,round);
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6248 6249
    LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_bf_ch_estimates[0],512*nsymb,1,1);
    //LOG_M(fname,vname,phy_vars_ue->lte_ue_pdsch_vars[eNB_id]->dl_bf_ch_estimates[0],512,1,1);
6250 6251 6252

    sprintf(fname,"dlsch%d_bf_ch_r%d_ext00.m",eNB_id,round);
    sprintf(vname,"dl%d_bf_ch_r%d_ext00",eNB_id,round);
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6253
    LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_bf_ch_estimates_ext[0],12*N_RB_DL*nsymb,1,1);
6254 6255
  }

6256
  if (ue->frame_parms.nb_antennas_rx == 2) {
6257 6258
    sprintf(fname,"dlsch%d_ch_r%d_ext01.m",eNB_id,round);
    sprintf(vname,"dl%d_ch_r%d_ext01",eNB_id,round);
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6259
    LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_ch_estimates_ext[1],12*N_RB_DL*nsymb,1,1);
6260 6261
  }

6262
  if (ue->frame_parms.nb_antenna_ports_eNB == 2) {
6263 6264
    sprintf(fname,"dlsch%d_ch_r%d_ext10.m",eNB_id,round);
    sprintf(vname,"dl%d_ch_r%d_ext10",eNB_id,round);
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6265
    LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_ch_estimates_ext[2],12*N_RB_DL*nsymb,1,1);
6266

6267
    if (ue->frame_parms.nb_antennas_rx == 2) {
6268 6269
      sprintf(fname,"dlsch%d_ch_r%d_ext11.m",eNB_id,round);
      sprintf(vname,"dl%d_ch_r%d_ext11",eNB_id,round);
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6270
      LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_ch_estimates_ext[3],12*N_RB_DL*nsymb,1,1);
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    }
  }

  sprintf(fname,"dlsch%d_rxF_r%d_uespec0.m",eNB_id,round);
  sprintf(vname,"dl%d_rxF_r%d_uespec0",eNB_id,round);
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6276
  LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->rxdataF_uespec_pilots[0],12*N_RB_DL,1,1);
6277

6278
  /*
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6279 6280 6281
    LOG_M("dlsch%d_ch_ext01.m","dl01_ch0_ext",pdsch_vars[eNB_id]->dl_ch_estimates_ext[1],12*N_RB_DL*nsymb,1,1);
    LOG_M("dlsch%d_ch_ext10.m","dl10_ch0_ext",pdsch_vars[eNB_id]->dl_ch_estimates_ext[2],12*N_RB_DL*nsymb,1,1);
    LOG_M("dlsch%d_ch_ext11.m","dl11_ch0_ext",pdsch_vars[eNB_id]->dl_ch_estimates_ext[3],12*N_RB_DL*nsymb,1,1);
6282
  */
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6283 6284
  sprintf(fname,"dlsch%d_r%d_rho.m",eNB_id,round);
  sprintf(vname,"dl_rho_r%d_%d",eNB_id,round);
6285

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6286
  LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_ch_rho_ext[harq_pid][round][0],12*N_RB_DL*nsymb,1,1);
6287

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6288 6289
  sprintf(fname,"dlsch%d_r%d_rho2.m",eNB_id,round);
  sprintf(vname,"dl_rho2_r%d_%d",eNB_id,round);
6290

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6291
  LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_ch_rho2_ext[0],12*N_RB_DL*nsymb,1,1);
6292

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6293 6294
  sprintf(fname,"dlsch%d_rxF_r%d_comp0.m",eNB_id,round);
  sprintf(vname,"dl%d_rxF_r%d_comp0",eNB_id,round);
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6295
  LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->rxdataF_comp0[0],12*N_RB_DL*nsymb,1,1);
6296
  if (ue->frame_parms.nb_antenna_ports_eNB == 2) {
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6297 6298
    sprintf(fname,"dlsch%d_rxF_r%d_comp1.m",eNB_id,round);
    sprintf(vname,"dl%d_rxF_r%d_comp1",eNB_id,round);
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6299
    LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->rxdataF_comp1[harq_pid][round][0],12*N_RB_DL*nsymb,1,1);
6300 6301
  }

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6302 6303
  sprintf(fname,"dlsch%d_rxF_r%d_llr.m",eNB_id,round);
  sprintf(vname,"dl%d_r%d_llr",eNB_id,round);
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6304
  LOG_M(fname,vname, ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->llr[0],coded_bits_per_codeword[0],1,0);
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6305 6306
  sprintf(fname,"dlsch%d_r%d_mag1.m",eNB_id,round);
  sprintf(vname,"dl%d_r%d_mag1",eNB_id,round);
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6307
  LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_ch_mag0[0],12*N_RB_DL*nsymb,1,1);
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6308 6309
  sprintf(fname,"dlsch%d_r%d_mag2.m",eNB_id,round);
  sprintf(vname,"dl%d_r%d_mag2",eNB_id,round);
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6310
  LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_ch_magb0[0],12*N_RB_DL*nsymb,1,1);
6311

6312
  //  printf("log2_maxh = %d\n",ue->pdsch_vars[eNB_id]->log2_maxh);
6313 6314 6315
}

#ifdef DEBUG_DLSCH_DEMOD
6316
/*
6317 6318
void print_bytes(char *s,__m128i *x)
{
6319 6320 6321 6322 6323 6324

  char *tempb = (char *)x;

  printf("%s  : %d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d\n",s,
         tempb[0],tempb[1],tempb[2],tempb[3],tempb[4],tempb[5],tempb[6],tempb[7],
         tempb[8],tempb[9],tempb[10],tempb[11],tempb[12],tempb[13],tempb[14],tempb[15]
6325
         );
6326 6327 6328

}

6329 6330
void print_shorts(char *s,__m128i *x)
{
6331 6332 6333 6334 6335 6336 6337

  short *tempb = (short *)x;
  printf("%s  : %d,%d,%d,%d,%d,%d,%d,%d\n",s,
         tempb[0],tempb[1],tempb[2],tempb[3],tempb[4],tempb[5],tempb[6],tempb[7]);

}

6338 6339
void print_shorts2(char *s,__m64 *x)
{
6340 6341 6342 6343 6344 6345 6346

  short *tempb = (short *)x;
  printf("%s  : %d,%d,%d,%d\n",s,
         tempb[0],tempb[1],tempb[2],tempb[3]);

}

6347 6348
void print_ints(char *s,__m128i *x)
{
6349 6350 6351 6352 6353

  int *tempb = (int *)x;
  printf("%s  : %d,%d,%d,%d\n",s,
         tempb[0],tempb[1],tempb[2],tempb[3]);

6354
}*/
6355
#endif