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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
 * the OAI Public License, Version 1.0  (the "License"); you may not use this file
 * 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/dci.c
* \brief Implements PDCCH physical channel TX/RX procedures (36.211) and DCI encoding/decoding (36.212/36.213). Current LTE compliance V8.6 2009-03.
* \author R. Knopp
* \date 2011
* \version 0.1
* \company Eurecom
* \email: knopp@eurecom.fr
* \note
* \warning
*/
#ifdef USER_MODE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#endif
#include "PHY/defs.h"
#include "PHY/extern.h"
#include "SCHED/defs.h"
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#include "SIMULATION/TOOLS/defs.h" // for taus 
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#include "PHY/sse_intrin.h"
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#include "assertions.h" 
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#include "T.h"
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//#define DEBUG_DCI_ENCODING 1
//#define DEBUG_DCI_DECODING 1
//#define DEBUG_PHY
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//#undef ALL_AGGREGATION

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//extern uint16_t phich_reg[MAX_NUM_PHICH_GROUPS][3];
//extern uint16_t pcfich_reg[4];
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uint32_t check_phich_reg(LTE_DL_FRAME_PARMS *frame_parms,uint32_t kprime,uint8_t lprime,uint8_t mi)
{
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  uint16_t i;
  uint16_t Ngroup_PHICH = (frame_parms->phich_config_common.phich_resource*frame_parms->N_RB_DL)/48;
  uint16_t mprime;
  uint16_t *pcfich_reg = frame_parms->pcfich_reg;
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  if ((lprime>0) && (frame_parms->Ncp==0) )
    return(0);

  //  printf("check_phich_reg : mi %d\n",mi);

  // compute REG based on symbol
  if ((lprime == 0)||
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      ((lprime==1)&&(frame_parms->nb_antenna_ports_eNB == 4)))
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    mprime = kprime/6;
  else
    mprime = kprime>>2;

  // check if PCFICH uses mprime
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  if ((lprime==0) &&
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      ((mprime == pcfich_reg[0]) ||
       (mprime == pcfich_reg[1]) ||
       (mprime == pcfich_reg[2]) ||
       (mprime == pcfich_reg[3]))) {
#ifdef DEBUG_DCI_ENCODING
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    printf("[PHY] REG %d allocated to PCFICH\n",mprime);
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#endif
    return(1);
  }

  // handle Special subframe case for TDD !!!

  //  printf("Checking phich_reg %d\n",mprime);
  if (mi > 0) {
    if (((frame_parms->phich_config_common.phich_resource*frame_parms->N_RB_DL)%48) > 0)
      Ngroup_PHICH++;
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    if (frame_parms->Ncp == 1) {
      Ngroup_PHICH<<=1;
    }
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    for (i=0; i<Ngroup_PHICH; i++) {
      if ((mprime == frame_parms->phich_reg[i][0]) ||
          (mprime == frame_parms->phich_reg[i][1]) ||
          (mprime == frame_parms->phich_reg[i][2]))  {
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#ifdef DEBUG_DCI_ENCODING
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        printf("[PHY] REG %d (lprime %d) allocated to PHICH\n",mprime,lprime);
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#endif
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        return(1);
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      }
    }
  }
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  return(0);
}

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uint16_t extract_crc(uint8_t *dci,uint8_t dci_len)
{
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  uint16_t crc16;
  //  uint8_t i;
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  /*
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  uint8_t crc;
  crc = ((uint16_t *)dci)[DCI_LENGTH>>4];
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  printf("crc1: %x, shift %d (DCI_LENGTH %d)\n",crc,DCI_LENGTH&0xf,DCI_LENGTH);
  crc = (crc>>(DCI_LENGTH&0xf));
  // clear crc bits
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  ((uint16_t *)dci)[DCI_LENGTH>>4] &= (0xffff>>(16-(DCI_LENGTH&0xf)));
  printf("crc2: %x, dci0 %x\n",crc,((int16_t *)dci)[DCI_LENGTH>>4]);
  crc |= (((uint16_t *)dci)[1+(DCI_LENGTH>>4)])<<(16-(DCI_LENGTH&0xf));
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  // clear crc bits
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  (((uint16_t *)dci)[1+(DCI_LENGTH>>4)]) = 0;
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  printf("extract_crc: crc %x\n",crc);
  */
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#ifdef DEBUG_DCI_DECODING
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  LOG_I(PHY,"dci_crc (%x,%x,%x), dci_len&0x7=%d\n",dci[dci_len>>3],dci[1+(dci_len>>3)],dci[2+(dci_len>>3)],
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      dci_len&0x7);
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#endif
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  if ((dci_len&0x7) > 0) {
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    ((uint8_t *)&crc16)[0] = dci[1+(dci_len>>3)]<<(dci_len&0x7) | dci[2+(dci_len>>3)]>>(8-(dci_len&0x7));
    ((uint8_t *)&crc16)[1] = dci[(dci_len>>3)]<<(dci_len&0x7) | dci[1+(dci_len>>3)]>>(8-(dci_len&0x7));
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  } else {
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    ((uint8_t *)&crc16)[0] = dci[1+(dci_len>>3)];
    ((uint8_t *)&crc16)[1] = dci[(dci_len>>3)];
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  }

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#ifdef DEBUG_DCI_DECODING
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  LOG_I(PHY,"dci_crc =>%x\n",crc16);
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#endif

  //  dci[(dci_len>>3)]&=(0xffff<<(dci_len&0xf));
  //  dci[(dci_len>>3)+1] = 0;
  //  dci[(dci_len>>3)+2] = 0;
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  return((uint16_t)crc16);
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}



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static uint8_t d[3*(MAX_DCI_SIZE_BITS + 16) + 96];
static uint8_t w[3*3*(MAX_DCI_SIZE_BITS+16)];
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void dci_encoding(uint8_t *a,
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                  uint8_t A,
                  uint16_t E,
                  uint8_t *e,
                  uint16_t rnti)
{
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  uint8_t D = (A + 16);
  uint32_t RCC;
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#ifdef DEBUG_DCI_ENCODING
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  int32_t i;
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#endif
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  // encode dci
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#ifdef DEBUG_DCI_ENCODING
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  printf("Doing DCI encoding for %d bits, e %p, rnti %x\n",A,e,rnti);
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#endif

  memset((void *)d,LTE_NULL,96);

  ccodelte_encode(A,2,a,d+96,rnti);

#ifdef DEBUG_DCI_ENCODING
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  for (i=0; i<16+A; i++)
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    printf("%d : (%d,%d,%d)\n",i,*(d+96+(3*i)),*(d+97+(3*i)),*(d+98+(3*i)));
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#endif
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#ifdef DEBUG_DCI_ENCODING
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  printf("Doing DCI interleaving for %d coded bits, e %p\n",D*3,e);
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#endif
  RCC = sub_block_interleaving_cc(D,d+96,w);

#ifdef DEBUG_DCI_ENCODING
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  printf("Doing DCI rate matching for %d channel bits, RCC %d, e %p\n",E,RCC,e);
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#endif
  lte_rate_matching_cc(RCC,E,w,e);


}


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uint8_t *generate_dci0(uint8_t *dci,
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                       uint8_t *e,
                       uint8_t DCI_LENGTH,
                       uint8_t aggregation_level,
                       uint16_t rnti)
{

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  uint16_t coded_bits;
  uint8_t dci_flip[8];
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  if (aggregation_level>3) {
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    printf("dci.c: generate_dci FATAL, illegal aggregation_level %d\n",aggregation_level);
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    return NULL;
  }

  coded_bits = 72 * (1<<aggregation_level);

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  /*

  #ifdef DEBUG_DCI_ENCODING
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  for (i=0;i<1+((DCI_LENGTH+16)/8);i++)
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    printf("i %d : %x\n",i,dci[i]);
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  #endif
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  */
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  if (DCI_LENGTH<=32) {
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    dci_flip[0] = dci[3];
    dci_flip[1] = dci[2];
    dci_flip[2] = dci[1];
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    dci_flip[3] = dci[0];
  } else {
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    dci_flip[0] = dci[7];
    dci_flip[1] = dci[6];
    dci_flip[2] = dci[5];
    dci_flip[3] = dci[4];
    dci_flip[4] = dci[3];
    dci_flip[5] = dci[2];
    dci_flip[6] = dci[1];
    dci_flip[7] = dci[0];
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#ifdef DEBUG_DCI_ENCODING
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    printf("DCI => %x,%x,%x,%x,%x,%x,%x,%x\n",
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        dci_flip[0],dci_flip[1],dci_flip[2],dci_flip[3],
        dci_flip[4],dci_flip[5],dci_flip[6],dci_flip[7]);
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#endif
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  }
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  dci_encoding(dci_flip,DCI_LENGTH,coded_bits,e,rnti);

  return(e+coded_bits);
}

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uint32_t Y;
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#define CCEBITS 72
#define CCEPERSYMBOL 33  // This is for 1200 RE
#define CCEPERSYMBOL0 22  // This is for 1200 RE
#define DCI_BITS_MAX ((2*CCEPERSYMBOL+CCEPERSYMBOL0)*CCEBITS)
#define Msymb (DCI_BITS_MAX/2)
//#define Mquad (Msymb/4)

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static uint32_t bitrev_cc_dci[32] = {1,17,9,25,5,21,13,29,3,19,11,27,7,23,15,31,0,16,8,24,4,20,12,28,2,18,10,26,6,22,14,30};
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static int32_t wtemp[2][Msymb];
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void pdcch_interleaving(LTE_DL_FRAME_PARMS *frame_parms,int32_t **z, int32_t **wbar,uint8_t n_symbols_pdcch,uint8_t mi)
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{
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  int32_t *wptr,*wptr2,*zptr;
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  uint32_t Mquad = get_nquad(n_symbols_pdcch,frame_parms,mi);
  uint32_t RCC = (Mquad>>5), ND;
  uint32_t row,col,Kpi,index;
  int32_t i,k,a;
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#ifdef RM_DEBUG
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  int32_t nulled=0;
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#endif
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  //  printf("[PHY] PDCCH Interleaving Mquad %d (Nsymb %d)\n",Mquad,n_symbols_pdcch);
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  if ((Mquad&0x1f) > 0)
    RCC++;
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  Kpi = (RCC<<5);
  ND = Kpi - Mquad;

  k=0;
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  for (col=0; col<32; col++) {
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    index = bitrev_cc_dci[col];

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    for (row=0; row<RCC; row++) {
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      //printf("col %d, index %d, row %d\n",col,index,row);
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      if (index>=ND) {
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        for (a=0; a<frame_parms->nb_antenna_ports_eNB; a++) {
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          //printf("a %d k %d\n",a,k);
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          wptr = &wtemp[a][k<<2];
          zptr = &z[a][(index-ND)<<2];
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          //printf("wptr=%p, zptr=%p\n",wptr,zptr);
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          wptr[0] = zptr[0];
          wptr[1] = zptr[1];
          wptr[2] = zptr[2];
          wptr[3] = zptr[3];
        }
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        k++;
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      }
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      index+=32;
    }
  }

  // permutation
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  for (i=0; i<Mquad; i++) {

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    for (a=0; a<frame_parms->nb_antenna_ports_eNB; a++) {
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      //wptr  = &wtemp[a][i<<2];
      //wptr2 = &wbar[a][((i+frame_parms->Nid_cell)%Mquad)<<2];
      wptr = &wtemp[a][((i+frame_parms->Nid_cell)%Mquad)<<2];
      wptr2 = &wbar[a][i<<2];
      wptr2[0] = wptr[0];
      wptr2[1] = wptr[1];
      wptr2[2] = wptr[2];
      wptr2[3] = wptr[3];
    }
  }
}

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void pdcch_demapping(uint16_t *llr,uint16_t *wbar,LTE_DL_FRAME_PARMS *frame_parms,uint8_t num_pdcch_symbols,uint8_t mi)
{
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  uint32_t i, lprime;
  uint16_t kprime,kprime_mod12,mprime,symbol_offset,tti_offset,tti_offset0;
  int16_t re_offset,re_offset0;
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  // This is the REG allocation algorithm from 36-211, second part of Section 6.8.5

  int Msymb2;

  switch (frame_parms->N_RB_DL) {
  case 100:
    Msymb2 = Msymb;
    break;
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  case 75:
    Msymb2 = 3*Msymb/4;
    break;
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  case 50:
    Msymb2 = Msymb>>1;
    break;
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  case 25:
    Msymb2 = Msymb>>2;
    break;
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  case 15:
    Msymb2 = Msymb*15/100;
    break;
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  case 6:
    Msymb2 = Msymb*6/100;
    break;
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  default:
    Msymb2 = Msymb>>2;
    break;
  }
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  mprime=0;


  re_offset = 0;
  re_offset0 = 0; // counter for symbol with pilots (extracted outside!)
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  for (kprime=0; kprime<frame_parms->N_RB_DL*12; kprime++) {
    for (lprime=0; lprime<num_pdcch_symbols; lprime++) {
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      symbol_offset = (uint32_t)frame_parms->N_RB_DL*12*lprime;
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      tti_offset = symbol_offset + re_offset;
      tti_offset0 = symbol_offset + re_offset0;
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      // if REG is allocated to PHICH, skip it
      if (check_phich_reg(frame_parms,kprime,lprime,mi) == 1) {
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	//        printf("dci_demapping : skipping REG %d (RE %d)\n",(lprime==0)?kprime/6 : kprime>>2,kprime);
	if ((lprime == 0)&&((kprime%6)==0))
	  re_offset0+=4;
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      } else { // not allocated to PHICH/PCFICH
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	//        printf("dci_demapping: REG %d\n",(lprime==0)?kprime/6 : kprime>>2);
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        if (lprime == 0) {
          // first symbol, or second symbol+4 TX antennas skip pilots
          kprime_mod12 = kprime%12;

          if ((kprime_mod12 == 0) || (kprime_mod12 == 6)) {
            // kprime represents REG

            for (i=0; i<4; i++) {
              wbar[mprime] = llr[tti_offset0+i];
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#ifdef DEBUG_DCI_DECODING
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              LOG_I(PHY,"PDCCH demapping mprime %d.%d <= llr %d (symbol %d re %d) -> (%d,%d)\n",mprime/4,i,tti_offset0+i,symbol_offset,re_offset0,*(char*)&wbar[mprime],*(1+(char*)&wbar[mprime]));
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#endif
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              mprime++;
              re_offset0++;
            }
          }
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        } else if ((lprime==1)&&(frame_parms->nb_antenna_ports_eNB == 4)) {
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          // LATER!!!!
        } else { // no pilots in this symbol
          kprime_mod12 = kprime%12;

          if ((kprime_mod12 == 0) || (kprime_mod12 == 4) || (kprime_mod12 == 8)) {
            // kprime represents REG
            for (i=0; i<4; i++) {
              wbar[mprime] = llr[tti_offset+i];
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#ifdef DEBUG_DCI_DECODING
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              LOG_I(PHY,"PDCCH demapping mprime %d.%d <= llr %d (symbol %d re %d) -> (%d,%d)\n",mprime/4,i,tti_offset+i,symbol_offset,re_offset+i,*(char*)&wbar[mprime],*(1+(char*)&wbar[mprime]));
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#endif
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              mprime++;
            }
          }  // is representative
        } // no pilots case
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      } // not allocated to PHICH/PCFICH

      // Stop when all REGs are copied in
      if (mprime>=Msymb2)
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        break;
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    } //lprime loop
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    re_offset++;

  } // kprime loop
}

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static uint16_t wtemp_rx[Msymb];
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void pdcch_deinterleaving(LTE_DL_FRAME_PARMS *frame_parms,uint16_t *z, uint16_t *wbar,uint8_t number_pdcch_symbols,uint8_t mi)
{
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  uint16_t *wptr,*zptr,*wptr2;
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  uint16_t Mquad=get_nquad(number_pdcch_symbols,frame_parms,mi);
  uint32_t RCC = (Mquad>>5), ND;
  uint32_t row,col,Kpi,index;
  int32_t i,k;
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  //  printf("Mquad %d, RCC %d\n",Mquad,RCC);

  if (!z) {
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    printf("dci.c: pdcch_deinterleaving: FATAL z is Null\n");
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    return;
  }
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  // undo permutation
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  for (i=0; i<Mquad; i++) {
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    wptr = &wtemp_rx[((i+frame_parms->Nid_cell)%Mquad)<<2];
    wptr2 = &wbar[i<<2];

    wptr[0] = wptr2[0];
    wptr[1] = wptr2[1];
    wptr[2] = wptr2[2];
    wptr[3] = wptr2[3];
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    /*    
    printf("pdcch_deinterleaving (%p,%p): quad %d (%d) -> (%d,%d %d,%d %d,%d %d,%d)\n",wptr,wptr2,i,(i+frame_parms->Nid_cell)%Mquad,
	   ((char*)wptr2)[0],
	   ((char*)wptr2)[1],
	   ((char*)wptr2)[2],
	   ((char*)wptr2)[3],
	   ((char*)wptr2)[4],
	   ((char*)wptr2)[5],
	   ((char*)wptr2)[6],
	   ((char*)wptr2)[7]);
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    */
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  }

  if ((Mquad&0x1f) > 0)
    RCC++;
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  Kpi = (RCC<<5);
  ND = Kpi - Mquad;

  k=0;
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  for (col=0; col<32; col++) {
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    index = bitrev_cc_dci[col];

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    for (row=0; row<RCC; row++) {
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      //      printf("row %d, index %d, Nd %d\n",row,index,ND);
      if (index>=ND) {



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        wptr = &wtemp_rx[k<<2];
        zptr = &z[(index-ND)<<2];

        zptr[0] = wptr[0];
        zptr[1] = wptr[1];
        zptr[2] = wptr[2];
        zptr[3] = wptr[3];

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	/*        
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        printf("deinterleaving ; k %d, index-Nd %d  => (%d,%d,%d,%d,%d,%d,%d,%d)\n",k,(index-ND),
               ((int8_t *)wptr)[0],
               ((int8_t *)wptr)[1],
               ((int8_t *)wptr)[2],
               ((int8_t *)wptr)[3],
               ((int8_t *)wptr)[4],
               ((int8_t *)wptr)[5],
               ((int8_t *)wptr)[6],
               ((int8_t *)wptr)[7]);
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	*/
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        k++;
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      }
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      index+=32;
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    }
  }

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  for (i=0; i<Mquad; i++) {
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    zptr = &z[i<<2];
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    /*    
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    printf("deinterleaving ; quad %d  => (%d,%d,%d,%d,%d,%d,%d,%d)\n",i,
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     ((int8_t *)zptr)[0],
     ((int8_t *)zptr)[1],
     ((int8_t *)zptr)[2],
     ((int8_t *)zptr)[3],
     ((int8_t *)zptr)[4],
     ((int8_t *)zptr)[5],
     ((int8_t *)zptr)[6],
     ((int8_t *)zptr)[7]);
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    */  
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  }
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}


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int32_t pdcch_qpsk_qpsk_llr(LTE_DL_FRAME_PARMS *frame_parms,
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                            int32_t **rxdataF_comp,
                            int32_t **rxdataF_comp_i,
                            int32_t **rho_i,
                            int16_t *pdcch_llr16,
                            int16_t *pdcch_llr8in,
                            uint8_t symbol)
{
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  int16_t *rxF=(int16_t*)&rxdataF_comp[0][(symbol*frame_parms->N_RB_DL*12)];
  int16_t *rxF_i=(int16_t*)&rxdataF_comp_i[0][(symbol*frame_parms->N_RB_DL*12)];
  int16_t *rho=(int16_t*)&rho_i[0][(symbol*frame_parms->N_RB_DL*12)];
  int16_t *llr128;
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  int32_t i;
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  char *pdcch_llr8;
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  int16_t *pdcch_llr;
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  pdcch_llr8 = (char *)&pdcch_llr8in[symbol*frame_parms->N_RB_DL*12];
  pdcch_llr = &pdcch_llr16[symbol*frame_parms->N_RB_DL*12];

  //  printf("dlsch_qpsk_qpsk: symbol %d\n",symbol);
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  llr128 = (int16_t*)pdcch_llr;
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  if (!llr128) {
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    printf("dlsch_qpsk_qpsk_llr: llr is null, symbol %d\n",symbol);
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    return -1;
  }

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  qpsk_qpsk(rxF,
            rxF_i,
            llr128,
            rho,
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            frame_parms->N_RB_DL*12);
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  //prepare for Viterbi which accepts 8 bit, but prefers 4 bit, soft input.
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  for (i=0; i<(frame_parms->N_RB_DL*24); i++) {
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    if (*pdcch_llr>7)
      *pdcch_llr8=7;
    else if (*pdcch_llr<-8)
      *pdcch_llr8=-8;
    else
      *pdcch_llr8 = (char)(*pdcch_llr);

    pdcch_llr++;
    pdcch_llr8++;
  }

  return(0);
}


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int32_t pdcch_llr(LTE_DL_FRAME_PARMS *frame_parms,
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                  int32_t **rxdataF_comp,
                  char *pdcch_llr,
                  uint8_t symbol)
{
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  int16_t *rxF= (int16_t*) &rxdataF_comp[0][(symbol*frame_parms->N_RB_DL*12)];
  int32_t i;
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  char *pdcch_llr8;

  pdcch_llr8 = &pdcch_llr[2*symbol*frame_parms->N_RB_DL*12];
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  if (!pdcch_llr8) {
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    printf("pdcch_qpsk_llr: llr is null, symbol %d\n",symbol);
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    return(-1);
  }
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  //    printf("pdcch qpsk llr for symbol %d (pos %d), llr offset %d\n",symbol,(symbol*frame_parms->N_RB_DL*12),pdcch_llr8-pdcch_llr);
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  for (i=0; i<(frame_parms->N_RB_DL*((symbol==0) ? 16 : 24)); i++) {
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    if (*rxF>31)
      *pdcch_llr8=31;
    else if (*rxF<-32)
      *pdcch_llr8=-32;
    else
      *pdcch_llr8 = (char)(*rxF);

    //    printf("%d %d => %d\n",i,*rxF,*pdcch_llr8);
    rxF++;
    pdcch_llr8++;
  }

  return(0);

}

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//__m128i avg128P;
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//compute average channel_level on each (TX,RX) antenna pair
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void pdcch_channel_level(int32_t **dl_ch_estimates_ext,
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                         LTE_DL_FRAME_PARMS *frame_parms,
                         int32_t *avg,
                         uint8_t nb_rb)
{
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  int16_t rb;
  uint8_t aatx,aarx;
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#if defined(__x86_64__) || defined(__i386__)
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  __m128i *dl_ch128;
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  __m128i avg128P;
#elif defined(__arm__)
  int16x8_t *dl_ch128;
  int32x4_t *avg128P;
#endif
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  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++) {
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      //clear average level
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#if defined(__x86_64__) || defined(__i386__)
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      avg128P = _mm_setzero_si128();
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      dl_ch128=(__m128i *)&dl_ch_estimates_ext[(aatx<<1)+aarx][frame_parms->N_RB_DL*12];
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#elif defined(__arm__)
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#endif
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      for (rb=0; rb<nb_rb; rb++) {

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#if defined(__x86_64__) || defined(__i386__)
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        avg128P = _mm_add_epi32(avg128P,_mm_madd_epi16(dl_ch128[0],dl_ch128[0]));
        avg128P = _mm_add_epi32(avg128P,_mm_madd_epi16(dl_ch128[1],dl_ch128[1]));
        avg128P = _mm_add_epi32(avg128P,_mm_madd_epi16(dl_ch128[2],dl_ch128[2]));
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#elif defined(__arm__)
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#endif
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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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      DevAssert( nb_rb );
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      avg[(aatx<<1)+aarx] = (((int32_t*)&avg128P)[0] +
                             ((int32_t*)&avg128P)[1] +
                             ((int32_t*)&avg128P)[2] +
                             ((int32_t*)&avg128P)[3])/(nb_rb*12);
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      //            printf("Channel level : %d\n",avg[(aatx<<1)+aarx]);
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    }
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#if defined(__x86_64__) || defined(__i386__)
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  _mm_empty();
  _m_empty();
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#endif
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}

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#if defined(__x86_64) || defined(__i386__)
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__m128i mmtmpPD0,mmtmpPD1,mmtmpPD2,mmtmpPD3;
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#elif defined(__arm__)
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#endif
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void pdcch_dual_stream_correlation(LTE_DL_FRAME_PARMS *frame_parms,
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                                   uint8_t symbol,
                                   int32_t **dl_ch_estimates_ext,
                                   int32_t **dl_ch_estimates_ext_i,
                                   int32_t **dl_ch_rho_ext,
                                   uint8_t output_shift)
{
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  uint16_t rb;
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#if defined(__x86_64__) || defined(__i386__)
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  __m128i *dl_ch128,*dl_ch128i,*dl_ch_rho128;
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#elif defined(__arm__)

#endif
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  uint8_t aarx;
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  //  printf("dlsch_dual_stream_correlation: symbol %d\n",symbol);


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  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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#if defined(__x86_64__) || defined(__i386__)
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    dl_ch128          = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch128i         = (__m128i *)&dl_ch_estimates_ext_i[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch_rho128      = (__m128i *)&dl_ch_rho_ext[aarx][symbol*frame_parms->N_RB_DL*12];

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#elif defined(__arm__)

#endif
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    for (rb=0; rb<frame_parms->N_RB_DL; rb++) {
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      // multiply by conjugated channel
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#if defined(__x86_64__) || defined(__i386__)
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      mmtmpPD0 = _mm_madd_epi16(dl_ch128[0],dl_ch128i[0]);
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      //  print_ints("re",&mmtmpPD0);

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      // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
      mmtmpPD1 = _mm_shufflelo_epi16(dl_ch128[0],_MM_SHUFFLE(2,3,0,1));
      mmtmpPD1 = _mm_shufflehi_epi16(mmtmpPD1,_MM_SHUFFLE(2,3,0,1));
      mmtmpPD1 = _mm_sign_epi16(mmtmpPD1,*(__m128i*)&conjugate[0]);
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      //  print_ints("im",&mmtmpPD1);
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      mmtmpPD1 = _mm_madd_epi16(mmtmpPD1,dl_ch128i[0]);
      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
      mmtmpPD0 = _mm_srai_epi32(mmtmpPD0,output_shift);
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      //  print_ints("re(shift)",&mmtmpPD0);
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      mmtmpPD1 = _mm_srai_epi32(mmtmpPD1,output_shift);
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      //  print_ints("im(shift)",&mmtmpPD1);
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      mmtmpPD2 = _mm_unpacklo_epi32(mmtmpPD0,mmtmpPD1);
      mmtmpPD3 = _mm_unpackhi_epi32(mmtmpPD0,mmtmpPD1);
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      //        print_ints("c0",&mmtmpPD2);
      //  print_ints("c1",&mmtmpPD3);
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      dl_ch_rho128[0] = _mm_packs_epi32(mmtmpPD2,mmtmpPD3);
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      //print_shorts("rx:",dl_ch128_2);
      //print_shorts("ch:",dl_ch128);
      //print_shorts("pack:",rho128);
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      // multiply by conjugated channel
      mmtmpPD0 = _mm_madd_epi16(dl_ch128[1],dl_ch128i[1]);
      // mmtmpPD0 contains real part of 4 consecutive outputs (32-bit)
      mmtmpPD1 = _mm_shufflelo_epi16(dl_ch128[1],_MM_SHUFFLE(2,3,0,1));
      mmtmpPD1 = _mm_shufflehi_epi16(mmtmpPD1,_MM_SHUFFLE(2,3,0,1));
      mmtmpPD1 = _mm_sign_epi16(mmtmpPD1,*(__m128i*)conjugate);
      mmtmpPD1 = _mm_madd_epi16(mmtmpPD1,dl_ch128i[1]);
      // mmtmpPD1 contains imag part of 4 consecutive outputs (32-bit)
      mmtmpPD0 = _mm_srai_epi32(mmtmpPD0,output_shift);
      mmtmpPD1 = _mm_srai_epi32(mmtmpPD1,output_shift);
      mmtmpPD2 = _mm_unpacklo_epi32(mmtmpPD0,mmtmpPD1);
      mmtmpPD3 = _mm_unpackhi_epi32(mmtmpPD0,mmtmpPD1);
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      dl_ch_rho128[1] =_mm_packs_epi32(mmtmpPD2,mmtmpPD3);
      //print_shorts("rx:",dl_ch128_2+1);
      //print_shorts("ch:",dl_ch128+1);
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      //print_shorts("pack:",rho128+1);
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      // multiply by conjugated channel
      mmtmpPD0 = _mm_madd_epi16(dl_ch128[2],dl_ch128i[2]);
      // mmtmpPD0 contains real part of 4 consecutive outputs (32-bit)
      mmtmpPD1 = _mm_shufflelo_epi16(dl_ch128[2],_MM_SHUFFLE(2,3,0,1));
      mmtmpPD1 = _mm_shufflehi_epi16(mmtmpPD1,_MM_SHUFFLE(2,3,0,1));
      mmtmpPD1 = _mm_sign_epi16(mmtmpPD1,*(__m128i*)conjugate);
      mmtmpPD1 = _mm_madd_epi16(mmtmpPD1,dl_ch128i[2]);
      // mmtmpPD1 contains imag part of 4 consecutive outputs (32-bit)
      mmtmpPD0 = _mm_srai_epi32(mmtmpPD0,output_shift);
      mmtmpPD1 = _mm_srai_epi32(mmtmpPD1,output_shift);
      mmtmpPD2 = _mm_unpacklo_epi32(mmtmpPD0,mmtmpPD1);
      mmtmpPD3 = _mm_unpackhi_epi32(mmtmpPD0,mmtmpPD1);
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      dl_ch_rho128[2] = _mm_packs_epi32(mmtmpPD2,mmtmpPD3);
      //print_shorts("rx:",dl_ch128_2+2);
      //print_shorts("ch:",dl_ch128+2);
      //print_shorts("pack:",rho128+2);
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      dl_ch128+=3;
      dl_ch128i+=3;
      dl_ch_rho128+=3;
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#elif defined(__arm__)
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#endif
     }
  }
#if defined(__x86_64__) || defined(__i386__)
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  _mm_empty();
  _m_empty();
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#endif
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}


void pdcch_detection_mrc_i(LTE_DL_FRAME_PARMS *frame_parms,
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                           int32_t **rxdataF_comp,
                           int32_t **rxdataF_comp_i,
                           int32_t **rho,
                           int32_t **rho_i,
                           uint8_t symbol)
{
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  uint8_t aatx;
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#if defined(__x86_64__) || defined(__i386__)
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  __m128i *rxdataF_comp128_0,*rxdataF_comp128_1,*rxdataF_comp128_i0,*rxdataF_comp128_i1,*rho128_0,*rho128_1,*rho128_i0,*rho128_i1;
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#elif defined(__arm__)
  int16x8_t *rxdataF_comp128_0,*rxdataF_comp128_1,*rxdataF_comp128_i0,*rxdataF_comp128_i1,*rho128_0,*rho128_1,*rho128_i0,*rho128_i1;
#endif
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  int32_t i;
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  if (frame_parms->nb_antennas_rx>1) {
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829
    for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) {
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      //if (frame_parms->mode1_flag && (aatx>0)) break;

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#if defined(__x86_64__) || defined(__i386__)
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      rxdataF_comp128_0   = (__m128i *)&rxdataF_comp[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];
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      rxdataF_comp128_1   = (__m128i *)&rxdataF_comp[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];
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#elif defined(__arm__)
      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];
#endif
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      // MRC on each re of rb on MF output
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      for (i=0; i<frame_parms->N_RB_DL*3; i++) {
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#if defined(__x86_64__) || defined(__i386__)
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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));
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#elif defined(__arm__)
        rxdataF_comp128_0[i] = vhaddq_s16(rxdataF_comp128_0[i],rxdataF_comp128_1[i]);
#endif
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      }
    }
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#if defined(__x86_64__) || defined(__i386__)
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    rho128_0 = (__m128i *) &rho[0][symbol*frame_parms->N_RB_DL*12];
    rho128_1 = (__m128i *) &rho[1][symbol*frame_parms->N_RB_DL*12];
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#elif defined(__arm__)
    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];
#endif
856
    for (i=0; i<frame_parms->N_RB_DL*3; i++) {
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#if defined(__x86_64__) || defined(__i386__)
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      rho128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_0[i],1),_mm_srai_epi16(rho128_1[i],1));
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#elif defined(__arm__)
      rho128_0[i] = vhaddq_s16(rho128_0[i],rho128_1[i]);
#endif
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    }
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#if defined(__x86_64__) || defined(__i386__)
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    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];
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    rxdataF_comp128_i1   = (__m128i *)&rxdataF_comp_i[1][symbol*frame_parms->N_RB_DL*12];
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#elif defined(__arm__)
    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];
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#endif
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    // MRC on each re of rb on MF and rho
    for (i=0; i<frame_parms->N_RB_DL*3; i++) {
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#if defined(__x86_64__) || defined(__i386__)
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      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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#elif defined(__arm__)
      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]);

#endif
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    }
  }
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#if defined(__x86_64__) || defined(__i386__)
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  _mm_empty();
  _m_empty();
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#endif
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}


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void pdcch_extract_rbs_single(int32_t **rxdataF,
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                              int32_t **dl_ch_estimates,
                              int32_t **rxdataF_ext,
                              int32_t **dl_ch_estimates_ext,
                              uint8_t symbol,
                              uint32_t high_speed_flag,
                              LTE_DL_FRAME_PARMS *frame_parms)
{
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  uint16_t rb,nb_rb=0;
  uint8_t i,j,aarx;
  int32_t *dl_ch0,*dl_ch0_ext,*rxF,*rxF_ext;
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  int nushiftmod3 = frame_parms->nushift%3;
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  uint8_t symbol_mod;
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  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
#ifdef DEBUG_DCI_DECODING
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  LOG_I(PHY, "extract_rbs_single: symbol_mod %d\n",symbol_mod);
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#endif
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  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))];
    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)))];
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932
    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++) {

        // 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++;
        }

        if (symbol_mod>0) {
          memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int32_t));

          for (i=0; i<12; i++) {

            rxF_ext[i]=rxF[i];

          }

          nb_rb++;
          dl_ch0_ext+=12;
          rxF_ext+=12;

          dl_ch0+=12;
          rxF+=12;
        } else {
          j=0;

          for (i=0; i<12; i++) {
            if ((i!=nushiftmod3) &&
                (i!=(nushiftmod3+3)) &&
                (i!=(nushiftmod3+6)) &&
                (i!=(nushiftmod3+9))) {
              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];
              //                printf("ch %d => (%d,%d)\n",i,*(short *)&dl_ch0[i],*(1+(short*)&dl_ch0[i]));
            }
          }

          nb_rb++;
          dl_ch0_ext+=8;
          rxF_ext+=8;

          dl_ch0+=12;
          rxF+=12;
        }
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      }
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    } else { // Odd number of RBs
      for (rb=0; rb<frame_parms->N_RB_DL>>1; rb++) {

        if (symbol_mod>0) {
          memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int32_t));

          for (i=0; i<12; i++)
            rxF_ext[i]=rxF[i];

          nb_rb++;
          dl_ch0_ext+=12;
          rxF_ext+=12;

          dl_ch0+=12;
          rxF+=12;
        } else {
          j=0;

          for (i=0; i<12; i++) {
            if ((i!=nushiftmod3) &&
                (i!=(nushiftmod3+3)) &&
                (i!=(nushiftmod3+6)) &&
                (i!=(nushiftmod3+9))) {
              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];
              //                printf("ch %d => (%d,%d)\n",i,*(short *)&dl_ch0[i],*(1+(short*)&dl_ch0[i]));
            }
          }

          nb_rb++;
          dl_ch0_ext+=8;
          rxF_ext+=8;

          dl_ch0+=12;
          rxF+=12;
        }
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      }
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      // Do middle RB (around DC)
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      //  printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
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      if (symbol_mod==0) {
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        j=0;

        for (i=0; i<6; i++) {
          if ((i!=nushiftmod3) &&
              (i!=(nushiftmod3+3))) {
            dl_ch0_ext[j]=dl_ch0[i];
            rxF_ext[j++]=rxF[i];
            //              printf("**extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j-1],*(1+(short*)&rxF_ext[j-1]));
          }
        }

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

        for (; i<12; i++) {
          if ((i!=(nushiftmod3+6)) &&
              (i!=(nushiftmod3+9))) {
            dl_ch0_ext[j]=dl_ch0[i];
            rxF_ext[j++]=rxF[(1+i-6)];
            //              printf("**extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j-1],*(1+(short*)&rxF_ext[j-1]));
          }
        }


        nb_rb++;
        dl_ch0_ext+=8;
        rxF_ext+=8;
        dl_ch0+=12;
        rxF+=7;
        rb++;
      } else {
        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)];
        }


        nb_rb++;
        dl_ch0_ext+=12;
        rxF_ext+=12;
        dl_ch0+=12;
        rxF+=7;
        rb++;
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      }

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      for (; rb<frame_parms->N_RB_DL; rb++) {
        if (symbol_mod > 0) {
          memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int32_t));

          for (i=0; i<12; i++)
            rxF_ext[i]=rxF[i];

          nb_rb++;
          dl_ch0_ext+=12;
          rxF_ext+=12;

          dl_ch0+=12;
          rxF+=12;
        } else {
          j=0;

          for (i=0; i<12; i++) {
            if ((i!=(nushiftmod3)) &&
                (i!=(nushiftmod3+3)) &&
                (i!=(nushiftmod3+6)) &&
                (i!=(nushiftmod3+9))) {
              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];
            }
          }

          nb_rb++;
          dl_ch0_ext+=8;
          rxF_ext+=8;

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

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void pdcch_extract_rbs_dual(int32_t **rxdataF,
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                            int32_t **dl_ch_estimates,
                            int32_t **rxdataF_ext,
                            int32_t **dl_ch_estimates_ext,
                            uint8_t symbol,
                            uint32_t high_speed_flag,
                            LTE_DL_FRAME_PARMS *frame_parms)
{

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  uint16_t rb,nb_rb=0;
  uint8_t i,aarx,j;
  int32_t *dl_ch0,*dl_ch0_ext,*dl_ch1,*dl_ch1_ext,*rxF,*rxF_ext;
  uint8_t symbol_mod;
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  int nushiftmod3 = frame_parms->nushift%3;

  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
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#ifdef DEBUG_DCI_DECODING
  LOG_I(PHY, "extract_rbs_dual: symbol_mod %d\n",symbol_mod);
#endif
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  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];
    }
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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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    //    printf("pdcch extract_rbs: rxF_ext pos %d\n",symbol*(frame_parms->N_RB_DL*12));
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    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++) {

        // 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++;
          //dl_ch1++;
        }

        if (symbol_mod>0) {
          memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int32_t));
          memcpy(dl_ch1_ext,dl_ch1,12*sizeof(int32_t));

          /*
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            printf("rb %d\n",rb);
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            for (i=0;i<12;i++)
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            printf("(%d %d)",((int16_t *)dl_ch0)[i<<1],((int16_t*)dl_ch0)[1+(i<<1)]);
            printf("\n");
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          */
          for (i=0; i<12; i++) {
            rxF_ext[i]=rxF[i];
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            //      printf("%d : (%d,%d)\n",(rxF+(2*i)-&rxdataF[aarx][( (symbol*(frame_parms->ofdm_symbol_size)))*2])/2,
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            //  ((int16_t*)&rxF[i<<1])[0],((int16_t*)&rxF[i<<1])[0]);
          }

          nb_rb++;
          dl_ch0_ext+=12;
          dl_ch1_ext+=12;
          rxF_ext+=12;
        } else {
          j=0;

          for (i=0; i<12; i++) {
            if ((i!=nushiftmod3) &&
                (i!=nushiftmod3+3) &&
                (i!=nushiftmod3+6) &&
                (i!=nushiftmod3+9)) {
              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_ch1_ext[j++]=dl_ch1[i];
            }
          }

          nb_rb++;
          dl_ch0_ext+=8;
          dl_ch1_ext+=8;
          rxF_ext+=8;
        }

        dl_ch0+=12;
        dl_ch1+=12;
        rxF+=12;
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      }
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    else {  // Odd number of RBs
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      for (rb=0; rb<frame_parms->N_RB_DL>>1; rb++) {

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        //  printf("rb %d: %d\n",rb,rxF-&rxdataF[aarx][(symbol*(frame_parms->ofdm_symbol_size))*2]);
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        if (symbol_mod>0) {
          memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int32_t));
          memcpy(dl_ch1_ext,dl_ch1,12*sizeof(int32_t));

          for (i=0; i<12; i++)
            rxF_ext[i]=rxF[i];

          nb_rb++;
          dl_ch0_ext+=12;
          dl_ch1_ext+=12;
          rxF_ext+=12;

          dl_ch0+=12;
          dl_ch1+=12;
          rxF+=12;

        } else {
          j=0;

          for (i=0; i<12; i++) {
            if ((i!=nushiftmod3) &&
                (i!=nushiftmod3+3) &&
                (i!=nushiftmod3+6) &&
                (i!=nushiftmod3+9)) {
              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_ch1_ext[j++]=dl_ch1[i];
              //                printf("ch %d => (%d,%d)\n",i,*(short *)&dl_ch0[i],*(1+(short*)&dl_ch0[i]));
            }
          }

          nb_rb++;
          dl_ch0_ext+=8;
          dl_ch1_ext+=8;
          rxF_ext+=8;


          dl_ch0+=12;
          dl_ch1+=12;
          rxF+=12;
        }
      }

      // Do middle RB (around DC)
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      if (symbol_mod > 0) {
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        for (i=0; i<6; i++) {
          dl_ch0_ext[i]=dl_ch0[i];
          dl_ch1_ext[i]=dl_ch1[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];
          dl_ch1_ext[i]=dl_ch1[i];
          rxF_ext[i]=rxF[(1+i)];
        }

        nb_rb++;
        dl_ch0_ext+=12;
        dl_ch1_ext+=12;
        rxF_ext+=12;

        dl_ch0+=12;
        dl_ch1+=12;
        rxF+=7;
        rb++;
      } else {
        j=0;

        for (i=0; i<6; i++) {
          if ((i!=nushiftmod3) &&
              (i!=nushiftmod3+3)) {
            dl_ch0_ext[j]=dl_ch0[i];
            dl_ch1_ext[j]=dl_ch1[i];
            rxF_ext[j++]=rxF[i];
            //              printf("**extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j-1],*(1+(short*)&rxF_ext[j-1]));
          }
        }

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

        for (; i<12; i++) {
          if ((i!=nushiftmod3+6) &&
              (i!=nushiftmod3+9)) {
            dl_ch0_ext[j]=dl_ch0[i];
            dl_ch1_ext[j]=dl_ch1[i];
            rxF_ext[j++]=rxF[(1+i-6)];
            //              printf("**extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j-1],*(1+(short*)&rxF_ext[j-1]));
          }
        }


        nb_rb++;
        dl_ch0_ext+=8;
        dl_ch1_ext+=8;
        rxF_ext+=8;
        dl_ch0+=12;
        dl_ch1+=12;
        rxF+=7;
        rb++;
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      }

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      for (; rb<frame_parms->N_RB_DL; rb++) {

        if (symbol_mod>0) {
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          //  printf("rb %d: %d\n",rb,rxF-&rxdataF[aarx][(symbol*(frame_parms->ofdm_symbol_size))*2]);
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          memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int32_t));
          memcpy(dl_ch1_ext,dl_ch1,12*sizeof(int32_t));

          for (i=0; i<12; i++)
            rxF_ext[i]=rxF[i];

          nb_rb++;
          dl_ch0_ext+=12;
          dl_ch1_ext+=12;
          rxF_ext+=12;

          dl_ch0+=12;
          dl_ch1+=12;
          rxF+=12;
        } else {
          j=0;

          for (i=0; i<12; i++) {
            if ((i!=nushiftmod3) &&
                (i!=nushiftmod3+3) &&
                (i!=nushiftmod3+6) &&
                (i!=nushiftmod3+9)) {
              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_ch1_ext[j++]=dl_ch1[i];
            }
          }

          nb_rb++;
          dl_ch0_ext+=8;
          dl_ch1_ext+=8;
          rxF_ext+=8;

          dl_ch0+=12;
          dl_ch1+=12;
          rxF+=12;
        }
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      }
    }
  }
}


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void pdcch_channel_compensation(int32_t **rxdataF_ext,
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                                int32_t **dl_ch_estimates_ext,
                                int32_t **rxdataF_comp,
                                int32_t **rho,
                                LTE_DL_FRAME_PARMS *frame_parms,
                                uint8_t symbol,
                                uint8_t output_shift)
{
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  uint16_t rb;
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#if defined(__x86_64__) || defined(__i386__)
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  __m128i *dl_ch128,*rxdataF128,*rxdataF_comp128;
  __m128i *dl_ch128_2, *rho128;
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#elif defined(__arm__)

#endif
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  uint8_t aatx,aarx,pilots=0;
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#ifdef DEBUG_DCI_DECODING
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  LOG_I(PHY, "PDCCH comp: symbol %d\n",symbol);
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#endif

  if (symbol==0)
    pilots=1;

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  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) {
    //if (frame_parms->mode1_flag && aatx>0) break; //if mode1_flag is set then there is only one stream to extract, independent of nb_antenna_ports_eNB
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    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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#if defined(__x86_64__) || defined(__i386__)
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      dl_ch128          = (__m128i *)&dl_ch_estimates_ext[(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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#elif defined(__arm__)

#endif
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      for (rb=0; rb<frame_parms->N_RB_DL; rb++) {

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#if defined(__x86_64__) || defined(__i386__)
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        // multiply by conjugated channel
        mmtmpPD0 = _mm_madd_epi16(dl_ch128[0],rxdataF128[0]);
        //  print_ints("re",&mmtmpPD0);

        // mmtmpPD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpPD1 = _mm_shufflelo_epi16(dl_ch128[0],_MM_SHUFFLE(2,3,0,1));
        mmtmpPD1 = _mm_shufflehi_epi16(mmtmpPD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpPD1 = _mm_sign_epi16(mmtmpPD1,*(__m128i*)&conjugate[0]);
        //  print_ints("im",&mmtmpPD1);
        mmtmpPD1 = _mm_madd_epi16(mmtmpPD1,rxdataF128[0]);
        // mmtmpPD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpPD0 = _mm_srai_epi32(mmtmpPD0,output_shift);
        //  print_ints("re(shift)",&mmtmpPD0);
        mmtmpPD1 = _mm_srai_epi32(mmtmpPD1,output_shift);
        //  print_ints("im(shift)",&mmtmpPD1);
        mmtmpPD2 = _mm_unpacklo_epi32(mmtmpPD0,mmtmpPD1);
        mmtmpPD3 = _mm_unpackhi_epi32(mmtmpPD0,mmtmpPD1);
        //        print_ints("c0",&mmtmpPD2);
        //  print_ints("c1",&mmtmpPD3);
        rxdataF_comp128[0] = _mm_packs_epi32(mmtmpPD2,mmtmpPD3);
        //  print_shorts("rx:",rxdataF128);
        //  print_shorts("ch:",dl_ch128);
        //  print_shorts("pack:",rxdataF_comp128);

        // multiply by conjugated channel
        mmtmpPD0 = _mm_madd_epi16(dl_ch128[1],rxdataF128[1]);
        // mmtmpPD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpPD1 = _mm_shufflelo_epi16(dl_ch128[1],_MM_SHUFFLE(2,3,0,1));
        mmtmpPD1 = _mm_shufflehi_epi16(mmtmpPD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpPD1 = _mm_sign_epi16(mmtmpPD1,*(__m128i*)conjugate);
        mmtmpPD1 = _mm_madd_epi16(mmtmpPD1,rxdataF128[1]);
        // mmtmpPD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpPD0 = _mm_srai_epi32(mmtmpPD0,output_shift);
        mmtmpPD1 = _mm_srai_epi32(mmtmpPD1,output_shift);
        mmtmpPD2 = _mm_unpacklo_epi32(mmtmpPD0,mmtmpPD1);
        mmtmpPD3 = _mm_unpackhi_epi32(mmtmpPD0,mmtmpPD1);

        rxdataF_comp128[1] = _mm_packs_epi32(mmtmpPD2,mmtmpPD3);

        //  print_shorts("rx:",rxdataF128+1);
        //  print_shorts("ch:",dl_ch128+1);
        //  print_shorts("pack:",rxdataF_comp128+1);
        // multiply by conjugated channel
        if (pilots == 0) {
          mmtmpPD0 = _mm_madd_epi16(dl_ch128[2],rxdataF128[2]);
          // mmtmpPD0 contains real part of 4 consecutive outputs (32-bit)
          mmtmpPD1 = _mm_shufflelo_epi16(dl_ch128[2],_MM_SHUFFLE(2,3,0,1));
          mmtmpPD1 = _mm_shufflehi_epi16(mmtmpPD1,_MM_SHUFFLE(2,3,0,1));
          mmtmpPD1 = _mm_sign_epi16(mmtmpPD1,*(__m128i*)conjugate);
          mmtmpPD1 = _mm_madd_epi16(mmtmpPD1,rxdataF128[2]);
          // mmtmpPD1 contains imag part of 4 consecutive outputs (32-bit)
          mmtmpPD0 = _mm_srai_epi32(mmtmpPD0,output_shift);
          mmtmpPD1 = _mm_srai_epi32(mmtmpPD1,output_shift);
          mmtmpPD2 = _mm_unpacklo_epi32(mmtmpPD0,mmtmpPD1);
          mmtmpPD3 = _mm_unpackhi_epi32(mmtmpPD0,mmtmpPD1);

          rxdataF_comp128[2] = _mm_packs_epi32(mmtmpPD2,mmtmpPD3);
        }

        //  print_shorts("rx:",rxdataF128+2);
        //  print_shorts("ch:",dl_ch128+2);
        //        print_shorts("pack:",rxdataF_comp128+2);

        if (pilots==0) {
          dl_ch128+=3;
          rxdataF128+=3;
          rxdataF_comp128+=3;
        } else {
          dl_ch128+=2;
          rxdataF128+=2;
          rxdataF_comp128+=2;
        }
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#elif defined(__arm__)

#endif
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      }
    }
  }
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  if (rho) {

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    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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#if defined(__x86_64__) || defined(__i386__)
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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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#elif defined(__arm__)
      
#endif
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      for (rb=0; rb<frame_parms->N_RB_DL; rb++) {
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#if defined(__x86_64__) || defined(__i386__)

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        // multiply by conjugated channel
        mmtmpPD0 = _mm_madd_epi16(dl_ch128[0],dl_ch128_2[0]);
        //  print_ints("re",&mmtmpD0);

        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpPD1 = _mm_shufflelo_epi16(dl_ch128[0],_MM_SHUFFLE(2,3,0,1));
        mmtmpPD1 = _mm_shufflehi_epi16(mmtmpPD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpPD1 = _mm_sign_epi16(mmtmpPD1,*(__m128i*)&conjugate[0]);
        //  print_ints("im",&mmtmpPD1);
        mmtmpPD1 = _mm_madd_epi16(mmtmpPD1,dl_ch128_2[0]);
        // mmtmpPD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpPD0 = _mm_srai_epi32(mmtmpPD0,output_shift);
        //  print_ints("re(shift)",&mmtmpD0);
        mmtmpPD1 = _mm_srai_epi32(mmtmpPD1,output_shift);
        //  print_ints("im(shift)",&mmtmpD1);
        mmtmpPD2 = _mm_unpacklo_epi32(mmtmpPD0,mmtmpPD1);
        mmtmpPD3 = _mm_unpackhi_epi32(mmtmpPD0,mmtmpPD1);
        //        print_ints("c0",&mmtmpPD2);
        //  print_ints("c1",&mmtmpPD3);
        rho128[0] = _mm_packs_epi32(mmtmpPD2,mmtmpPD3);

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

        // multiply by conjugated channel
        mmtmpPD0 = _mm_madd_epi16(dl_ch128[1],dl_ch128_2[1]);
        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpPD1 = _mm_shufflelo_epi16(dl_ch128[1],_MM_SHUFFLE(2,3,0,1));
        mmtmpPD1 = _mm_shufflehi_epi16(mmtmpPD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpPD1 = _mm_sign_epi16(mmtmpPD1,*(__m128i*)conjugate);
        mmtmpPD1 = _mm_madd_epi16(mmtmpPD1,dl_ch128_2[1]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpPD0 = _mm_srai_epi32(mmtmpPD0,output_shift);
        mmtmpPD1 = _mm_srai_epi32(mmtmpPD1,output_shift);
        mmtmpPD2 = _mm_unpacklo_epi32(mmtmpPD0,mmtmpPD1);
        mmtmpPD3 = _mm_unpackhi_epi32(mmtmpPD0,mmtmpPD1);


        rho128[1] =_mm_packs_epi32(mmtmpPD2,mmtmpPD3);
        //print_shorts("rx:",dl_ch128_2+1);
        //print_shorts("ch:",dl_ch128+1);
        //print_shorts("pack:",rho128+1);
        // multiply by conjugated channel
        mmtmpPD0 = _mm_madd_epi16(dl_ch128[2],dl_ch128_2[2]);
        // mmtmpPD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpPD1 = _mm_shufflelo_epi16(dl_ch128[2],_MM_SHUFFLE(2,3,0,1));
        mmtmpPD1 = _mm_shufflehi_epi16(mmtmpPD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpPD1 = _mm_sign_epi16(mmtmpPD1,*(__m128i*)conjugate);
        mmtmpPD1 = _mm_madd_epi16(mmtmpPD1,dl_ch128_2[2]);
        // mmtmpPD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpPD0 = _mm_srai_epi32(mmtmpPD0,output_shift);
        mmtmpPD1 = _mm_srai_epi32(mmtmpPD1,output_shift);
        mmtmpPD2 = _mm_unpacklo_epi32(mmtmpPD0,mmtmpPD1);
        mmtmpPD3 = _mm_unpackhi_epi32(mmtmpPD0,mmtmpPD1);

        rho128[2] = _mm_packs_epi32(mmtmpPD2,mmtmpPD3);
        //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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#elif defined(__arm_)


#endif
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      }
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    }

  }

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#if defined(__x86_64__) || defined(__i386__)
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  _mm_empty();
  _m_empty();
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#endif
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}
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void pdcch_detection_mrc(LTE_DL_FRAME_PARMS *frame_parms,
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                         int32_t **rxdataF_comp,
                         uint8_t symbol)
{
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  uint8_t aatx;
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#if defined(__x86_64__) || defined(__i386__)
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  __m128i *rxdataF_comp128_0,*rxdataF_comp128_1;
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#elif defined(__arm__)
 int16x8_t *rxdataF_comp128_0,*rxdataF_comp128_1;
#endif
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  int32_t i;
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  if (frame_parms->nb_antennas_rx>1) {
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    for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) {
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#if defined(__x86_64__) || defined(__i386__)
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      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];
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#elif defined(__arm__)
      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];
#endif
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      // MRC on each re of rb
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      for (i=0; i<frame_parms->N_RB_DL*3; i++) {
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#if defined(__x86_64__) || defined(__i386__)
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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));
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#elif defined(__arm__)
        rxdataF_comp128_0[i] = vhaddq_s16(rxdataF_comp128_0[i],rxdataF_comp128_1[i]);
#endif
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      }
    }
  }
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#if defined(__x86_64__) || defined(__i386__)
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  _mm_empty();
  _m_empty();
1624
#endif
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}

void pdcch_siso(LTE_DL_FRAME_PARMS *frame_parms,
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                int32_t **rxdataF_comp,
                uint8_t l)
{
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1634
  uint8_t rb,re,jj,ii;
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  jj=0;
  ii=0;

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  for (rb=0; rb<frame_parms->N_RB_DL; rb++) {

    for (re=0; re<12; re++) {

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      rxdataF_comp[0][jj++] = rxdataF_comp[0][ii];
      ii++;
    }
  }
}


void pdcch_alamouti(LTE_DL_FRAME_PARMS *frame_parms,
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                    int32_t **rxdataF_comp,
                    uint8_t symbol)
{
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  int16_t *rxF0,*rxF1;
  uint8_t rb,re;
  int32_t jj=(symbol*frame_parms->N_RB_DL*12);
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  rxF0     = (int16_t*)&rxdataF_comp[0][jj];  //tx antenna 0  h0*y
  rxF1     = (int16_t*)&rxdataF_comp[2][jj];  //tx antenna 1  h1*y
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  for (rb=0; rb<frame_parms->N_RB_DL; rb++) {
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    for (re=0; re<12; re+=2) {
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      // Alamouti RX combining
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      rxF0[0] = rxF0[0] + rxF1[2];
      rxF0[1] = rxF0[1] - rxF1[3];

      rxF0[2] = rxF0[2] - rxF1[0];
      rxF0[3] = rxF0[3] + rxF1[1];
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      rxF0+=4;
      rxF1+=4;
    }
  }

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}

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int32_t avgP[4];
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int32_t rx_pdcch(PHY_VARS_UE *ue,
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                 uint32_t frame,
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                 uint8_t subframe,
                 uint8_t eNB_id,
                 MIMO_mode_t mimo_mode,
                 uint32_t high_speed_flag,
                 uint8_t is_secondary_ue)
{
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  LTE_UE_COMMON *common_vars      = &ue->common_vars;
  LTE_DL_FRAME_PARMS *frame_parms = &ue->frame_parms;
  LTE_UE_PDCCH **pdcch_vars       = ue->pdcch_vars[subframe & 0x1];

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  uint8_t log2_maxh,aatx,aarx;
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#ifdef MU_RECEIVER
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  uint8_t eNB_id_i=eNB_id+1;//add 1 to eNB_id to separate from wanted signal, chosen as the B/F'd pilots from the SeNB are shifted by 1
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#endif
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  int32_t avgs,s;
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  uint8_t n_pdcch_symbols = 3; //pdcch_vars[eNB_id]->num_pdcch_symbols;
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  uint8_t mi = get_mi(frame_parms,subframe);
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  //printf("In rx_pdcch, subframe %d, eNB_id %d, pdcch_vars %d \n",subframe,eNB_id,pdcch_vars);
1707

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  for (s=0; s<n_pdcch_symbols; s++) {
    if (is_secondary_ue == 1) {
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      pdcch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[subframe&0x1].rxdataF,
                               common_vars->common_vars_rx_data_per_thread[subframe&0x1].dl_ch_estimates[eNB_id+1], //add 1 to eNB_id to compensate for the shifted B/F'd pilots from the SeNB
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                               pdcch_vars[eNB_id]->rxdataF_ext,
                               pdcch_vars[eNB_id]->dl_ch_estimates_ext,
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                               s,
                               high_speed_flag,
                               frame_parms);
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#ifdef MU_RECEIVER
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      pdcch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[subframe&0x1].rxdataF,
                               common_vars->common_vars_rx_data_per_thread[subframe&0x1].dl_ch_estimates[eNB_id_i - 1],//subtract 1 to eNB_id_i to compensate for the non-shifted pilots from the PeNB
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                               pdcch_vars[eNB_id_i]->rxdataF_ext,//shift by two to simulate transmission from a second antenna
                               pdcch_vars[eNB_id_i]->dl_ch_estimates_ext,//shift by two to simulate transmission from a second antenna
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                               s,
                               high_speed_flag,
                               frame_parms);
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#endif //MU_RECEIVER
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    } else if (frame_parms->nb_antenna_ports_eNB>1) {
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      pdcch_extract_rbs_dual(common_vars->common_vars_rx_data_per_thread[subframe&0x1].rxdataF,
                             common_vars->common_vars_rx_data_per_thread[subframe&0x1].dl_ch_estimates[eNB_id],
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                             pdcch_vars[eNB_id]->rxdataF_ext,
                             pdcch_vars[eNB_id]->dl_ch_estimates_ext,
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                             s,
                             high_speed_flag,
                             frame_parms);
    } else {
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      pdcch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[subframe&0x1].rxdataF,
                               common_vars->common_vars_rx_data_per_thread[subframe&0x1].dl_ch_estimates[eNB_id],
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                               pdcch_vars[eNB_id]->rxdataF_ext,
                               pdcch_vars[eNB_id]->dl_ch_estimates_ext,
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                               s,
                               high_speed_flag,
                               frame_parms);
    }
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  }
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  pdcch_channel_level(pdcch_vars[eNB_id]->dl_ch_estimates_ext,
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                      frame_parms,
                      avgP,
                      frame_parms->N_RB_DL);
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  avgs = 0;
1751

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  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++)
1753
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++)
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      avgs = cmax(avgs,avgP[(aarx<<1)+aatx]);
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  log2_maxh = (log2_approx(avgs)/2) + 5;  //+frame_parms->nb_antennas_rx;
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#ifdef DEBUG_PHY
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  LOG_I(PHY,"subframe %d: pdcch log2_maxh = %d (%d,%d)\n",subframe,log2_maxh,avgP[0],avgs);
1759
#endif
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#if T_TRACER
  T(T_UE_PHY_PDCCH_ENERGY, T_INT(eNB_id),  T_INT(0), T_INT(frame%1024), T_INT(subframe),
                           T_INT(avgP[0]), T_INT(avgP[1]),    T_INT(avgP[2]),             T_INT(avgP[3]));
#endif
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  for (s=0; s<n_pdcch_symbols; s++) {
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    pdcch_channel_compensation(pdcch_vars[eNB_id]->rxdataF_ext,
                               pdcch_vars[eNB_id]->dl_ch_estimates_ext,
                               pdcch_vars[eNB_id]->rxdataF_comp,
                               (aatx>1) ? pdcch_vars[eNB_id]->rho : NULL,
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                               frame_parms,
                               s,
                               log2_maxh); // log2_maxh+I0_shift
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#ifdef DEBUG_PHY
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    if (subframe==5)
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      write_output("rxF_comp_d.m","rxF_c_d",&pdcch_vars[eNB_id]->rxdataF_comp[0][s*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
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#endif

#ifdef MU_RECEIVER
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    if (is_secondary_ue) {
      //get MF output for interfering stream
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      pdcch_channel_compensation(pdcch_vars[eNB_id_i]->rxdataF_ext,
                                 pdcch_vars[eNB_id_i]->dl_ch_estimates_ext,
                                 pdcch_vars[eNB_id_i]->rxdataF_comp,
                                 (aatx>1) ? pdcch_vars[eNB_id_i]->rho : NULL,
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                                 frame_parms,
                                 s,
                                 log2_maxh); // log2_maxh+I0_shift
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#ifdef DEBUG_PHY
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      write_output("rxF_comp_i.m","rxF_c_i",&pdcch_vars[eNB_id_i]->rxdataF_comp[0][s*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
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#endif
      pdcch_dual_stream_correlation(frame_parms,
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                                    s,
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                                    pdcch_vars[eNB_id]->dl_ch_estimates_ext,
                                    pdcch_vars[eNB_id_i]->dl_ch_estimates_ext,
                                    pdcch_vars[eNB_id]->dl_ch_rho_ext,
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                                    log2_maxh);
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    }
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1804
#endif //MU_RECEIVER
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    if (frame_parms->nb_antennas_rx > 1) {
#ifdef MU_RECEIVER
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      if (is_secondary_ue) {
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        pdcch_detection_mrc_i(frame_parms,
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                              pdcch_vars[eNB_id]->rxdataF_comp,
                              pdcch_vars[eNB_id_i]->rxdataF_comp,
                              pdcch_vars[eNB_id]->rho,
                              pdcch_vars[eNB_id]->dl_ch_rho_ext,
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                              s);
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#ifdef DEBUG_PHY
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        write_output("rxF_comp_d.m","rxF_c_d",&pdcch_vars[eNB_id]->rxdataF_comp[0][s*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
        write_output("rxF_comp_i.m","rxF_c_i",&pdcch_vars[eNB_id_i]->rxdataF_comp[0][s*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
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#endif
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      } else
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#endif //MU_RECEIVER
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        pdcch_detection_mrc(frame_parms,
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                            pdcch_vars[eNB_id]->rxdataF_comp,
1825 1826
                            s);

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    }
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    if (mimo_mode == SISO)
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      pdcch_siso(frame_parms,pdcch_vars[eNB_id]->rxdataF_comp,s);
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    else
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      pdcch_alamouti(frame_parms,pdcch_vars[eNB_id]->rxdataF_comp,s);
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#ifdef MU_RECEIVER
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    if (is_secondary_ue) {
      pdcch_qpsk_qpsk_llr(frame_parms,
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                          pdcch_vars[eNB_id]->rxdataF_comp,
                          pdcch_vars[eNB_id_i]->rxdataF_comp,
                          pdcch_vars[eNB_id]->dl_ch_rho_ext,
                          pdcch_vars[eNB_id]->llr16, //subsequent function require 16 bit llr, but output must be 8 bit (actually clipped to 4, because of the Viterbi decoder)
                          pdcch_vars[eNB_id]->llr,
1844
                          s);
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      /*
1846
      #ifdef DEBUG_PHY
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      if (subframe==5) {
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      write_output("llr8_seq.m","llr8",&pdcch_vars[eNB_id]->llr[s*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,4);
      write_output("llr16_seq.m","llr16",&pdcch_vars[eNB_id]->llr16[s*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,4);
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      }
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1851
      #endif*/
1852
    } else {
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#endif //MU_RECEIVER
      pdcch_llr(frame_parms,
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                pdcch_vars[eNB_id]->rxdataF_comp,
                (char *)pdcch_vars[eNB_id]->llr,
1857
                s);
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      /*#ifdef DEBUG_PHY
1859
      write_output("llr8_seq.m","llr8",&pdcch_vars[eNB_id]->llr[s*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,4);
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      #endif*/
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#ifdef MU_RECEIVER
    }
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#endif //MU_RECEIVER

  }

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#if T_TRACER
  T(T_UE_PHY_PDCCH_IQ, T_INT(frame_parms->N_RB_DL), T_INT(frame_parms->N_RB_DL),
    T_INT(n_pdcch_symbols),
    T_BUFFER(pdcch_vars[eNB_id]->rxdataF_comp, frame_parms->N_RB_DL*12*n_pdcch_symbols* 4));
#endif
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  // decode pcfich here
  n_pdcch_symbols = rx_pcfich(frame_parms,
1877
                              subframe,
1878
                              pdcch_vars[eNB_id],
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                              mimo_mode);

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  if (n_pdcch_symbols>3)
    n_pdcch_symbols=1;

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#ifdef DEBUG_DCI_DECODING

1888
  printf("demapping: subframe %d, mi %d, tdd_config %d\n",subframe,get_mi(frame_parms,subframe),frame_parms->tdd_config);
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#endif

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  pdcch_demapping(pdcch_vars[eNB_id]->llr,
                  pdcch_vars[eNB_id]->wbar,
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                  frame_parms,
                  n_pdcch_symbols,
                  get_mi(frame_parms,subframe));
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  pdcch_deinterleaving(frame_parms,
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                       (uint16_t*)pdcch_vars[eNB_id]->e_rx,
                       pdcch_vars[eNB_id]->wbar,
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                       n_pdcch_symbols,
                       mi);

1903
  pdcch_unscrambling(frame_parms,
1904
                     subframe,
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                     pdcch_vars[eNB_id]->e_rx,
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                     get_nCCE(n_pdcch_symbols,frame_parms,mi)*72);

1908
  pdcch_vars[eNB_id]->num_pdcch_symbols = n_pdcch_symbols;
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  return(0);
}


void pdcch_scrambling(LTE_DL_FRAME_PARMS *frame_parms,
1915 1916 1917 1918
                      uint8_t subframe,
                      uint8_t *e,
                      uint32_t length)
{
1919
  int i;
1920 1921
  uint8_t reset;
  uint32_t x1, x2, s=0;
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  reset = 1;
  // x1 is set in lte_gold_generic

  x2 = (subframe<<9) + frame_parms->Nid_cell; //this is c_init in 36.211 Sec 6.8.2

  for (i=0; i<length; i++) {
    if ((i&0x1f)==0) {
      s = lte_gold_generic(&x1, &x2, reset);
      //printf("lte_gold[%d]=%x\n",i,s);
      reset = 0;
    }
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    //    printf("scrambling %d : e %d, c %d\n",i,e[i],((s>>(i&0x1f))&1));
    if (e[i] != 2) // <NIL> element is 2
      e[i] = (e[i]&1) ^ ((s>>(i&0x1f))&1);
  }
}

void pdcch_unscrambling(LTE_DL_FRAME_PARMS *frame_parms,
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                        uint8_t subframe,
                        int8_t* llr,
                        uint32_t length)
{
1946 1947

  int i;
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  uint8_t reset;
  uint32_t x1, x2, s=0;
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  reset = 1;
  // x1 is set in first call to lte_gold_generic

  x2 = (subframe<<9) + frame_parms->Nid_cell; //this is c_init in 36.211 Sec 6.8.2

  for (i=0; i<length; i++) {
1957
    if ((i&0x1f)==0) {
1958
      s = lte_gold_generic(&x1, &x2, reset);
1959
      //      printf("lte_gold[%d]=%x\n",i,s);
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      reset = 0;
    }
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1963 1964
    
    //    printf("unscrambling %d : e %d, c %d => ",i,llr[i],((s>>(i&0x1f))&1));
1965 1966
    if (((s>>(i%32))&1)==0)
      llr[i] = -llr[i];
1967
    //    printf("%d\n",llr[i]);
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  }
}
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uint8_t get_num_pdcch_symbols(uint8_t num_dci,
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                              DCI_ALLOC_t *dci_alloc,
                              LTE_DL_FRAME_PARMS *frame_parms,
                              uint8_t subframe)
{
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  uint16_t numCCE = 0;
  uint8_t i;
  uint8_t nCCEmin = 0;
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  uint16_t CCE_max_used_index = 0;
  uint16_t firstCCE_max = dci_alloc[0].firstCCE;
  uint8_t  L = dci_alloc[0].L;
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  // check pdcch duration imposed by PHICH duration (Section 6.9 of 36-211)
  if (frame_parms->Ncp==1) { // extended prefix
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    if ((frame_parms->frame_type == TDD) &&
        ((frame_parms->tdd_config<3)||(frame_parms->tdd_config==6)) &&
        ((subframe==1) || (subframe==6))) // subframes 1 and 6 (S-subframes) for 5ms switching periodicity are 2 symbols
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      nCCEmin = 2;
    else {   // 10ms switching periodicity is always 3 symbols, any DL-only subframe is 3 symbols
      nCCEmin = 3;
    }
  }

  // compute numCCE
1998
  for (i=0; i<num_dci; i++) {
1999
    //     printf("dci %d => %d\n",i,dci_alloc[i].L);
2000
    numCCE += (1<<(dci_alloc[i].L));
2001 2002

    if(firstCCE_max < dci_alloc[i].firstCCE) {
2003 2004
      firstCCE_max = dci_alloc[i].firstCCE;
      L            = dci_alloc[i].L;
2005
    }
2006
  }
2007
  CCE_max_used_index = firstCCE_max + (1<<L) - 1;
2008 2009

  //if ((9*numCCE) <= (frame_parms->N_RB_DL*2))
2010
  if (CCE_max_used_index < get_nCCE(1, frame_parms, get_mi(frame_parms, subframe)))
2011
    return(cmax(1,nCCEmin));
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2012
  //else if ((9*numCCE) <= (frame_parms->N_RB_DL*((frame_parms->nb_antenna_ports_eNB==4) ? 4 : 5)))
2013
  else if (CCE_max_used_index < get_nCCE(2, frame_parms, get_mi(frame_parms, subframe)))
2014
    return(cmax(2,nCCEmin));
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2015
  //else if ((9*numCCE) <= (frame_parms->N_RB_DL*((frame_parms->nb_antenna_ports_eNB==4) ? 7 : 8)))
2016
  else if (CCE_max_used_index < get_nCCE(3, frame_parms, get_mi(frame_parms, subframe)))
2017
    return(cmax(3,nCCEmin));
2018
  else if (frame_parms->N_RB_DL<=10) {
2019
    if (frame_parms->Ncp == 0) { // normal CP
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2020
      printf("numCCE %d, N_RB_DL = %d : should be returning 4 PDCCH symbols (%d,%d,%d)\n",numCCE,frame_parms->N_RB_DL,
2021 2022 2023 2024
             get_nCCE(1, frame_parms, get_mi(frame_parms, subframe)),
             get_nCCE(2, frame_parms, get_mi(frame_parms, subframe)),
             get_nCCE(3, frame_parms, get_mi(frame_parms, subframe)));

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2025
      if ((9*numCCE) <= (frame_parms->N_RB_DL*((frame_parms->nb_antenna_ports_eNB==4) ? 10 : 11)))
2026 2027
        return(4);
    } else { // extended CP
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2028
      if ((9*numCCE) <= (frame_parms->N_RB_DL*((frame_parms->nb_antenna_ports_eNB==4) ? 9 : 10)))
2029
        return(4);
2030 2031 2032
    }
  }

2033

2034
  LOG_I(PHY," dci.c: get_num_pdcch_symbols subframe %d FATAL, illegal numCCE %d (num_dci %d)\n",subframe,numCCE,num_dci);
2035 2036
  //for (i=0;i<num_dci;i++) {
  //  printf("dci_alloc[%d].L = %d\n",i,dci_alloc[i].L);
2037
  //}
2038 2039 2040 2041
  //exit(-1);
  return(0);
}

2042
uint8_t generate_dci_top(uint8_t num_ue_spec_dci,
2043 2044 2045 2046 2047
                         uint8_t num_common_dci,
                         DCI_ALLOC_t *dci_alloc,
                         uint32_t n_rnti,
                         int16_t amp,
                         LTE_DL_FRAME_PARMS *frame_parms,
2048
                         int32_t **txdataF,
2049 2050
                         uint32_t subframe)
{
2051 2052 2053 2054 2055 2056 2057

  uint8_t *e_ptr,num_pdcch_symbols;
  int8_t L;
  uint32_t i, lprime;
  uint32_t gain_lin_QPSK,kprime,kprime_mod12,mprime,nsymb,symbol_offset,tti_offset;
  int16_t re_offset;
  uint8_t mi = get_mi(frame_parms,subframe);
2058
  static uint8_t e[DCI_BITS_MAX];
2059
  static int32_t yseq0[Msymb],yseq1[Msymb],wbar0[Msymb],wbar1[Msymb];
2060

2061 2062
  int32_t *y[2];
  int32_t *wbar[2];
2063

2064 2065 2066 2067 2068 2069 2070 2071 2072
  int nushiftmod3 = frame_parms->nushift%3;

  int Msymb2;
  int split_flag=0;

  switch (frame_parms->N_RB_DL) {
  case 100:
    Msymb2 = Msymb;
    break;
2073

2074 2075 2076
  case 75:
    Msymb2 = 3*Msymb/4;
    break;
2077

2078 2079 2080
  case 50:
    Msymb2 = Msymb>>1;
    break;
2081

2082 2083 2084
  case 25:
    Msymb2 = Msymb>>2;
    break;
2085

2086 2087 2088
  case 15:
    Msymb2 = Msymb*15/100;
    break;
2089

2090 2091 2092
  case 6:
    Msymb2 = Msymb*6/100;
    break;
2093

2094 2095 2096 2097 2098 2099
  default:
    Msymb2 = Msymb>>2;
    break;
  }

  num_pdcch_symbols = get_num_pdcch_symbols(num_ue_spec_dci+num_common_dci,dci_alloc,frame_parms,subframe);
2100 2101
  //  printf("subframe %d in generate_dci_top num_pdcch_symbols = %d, num_dci %d\n",
  //     subframe,num_pdcch_symbols,num_ue_spec_dci+num_common_dci);
2102
  generate_pcfich(num_pdcch_symbols,
2103 2104 2105 2106
                  amp,
                  frame_parms,
                  txdataF,
                  subframe);
2107 2108 2109 2110 2111 2112
  wbar[0] = &wbar0[0];
  wbar[1] = &wbar1[0];
  y[0] = &yseq0[0];
  y[1] = &yseq1[0];

  // reset all bits to <NIL>, here we set <NIL> elements as 2
2113 2114 2115 2116
  // memset(e, 2, DCI_BITS_MAX);
  // here we interpret NIL as a random QPSK sequence. That makes power estimation easier.
  for (i=0; i<DCI_BITS_MAX; i++)
    e[i]=taus()&1;
2117

2118 2119 2120 2121
  e_ptr = e;

  // generate DCIs in order of decreasing aggregation level, then common/ue spec
  // MAC is assumed to have ordered the UE spec DCI according to the RNTI-based randomization
2122 2123
  for (L=3; L>=0; L--) {
    for (i=0; i<num_common_dci; i++) {
2124

2125
      if (dci_alloc[i].L == (uint8_t)L) {
2126

2127
#ifdef DEBUG_DCI_ENCODING
2128
        printf("Generating common DCI %d/%d (nCCE %d) of length %d, aggregation %d (%x)\n",i,num_common_dci,dci_alloc[i].firstCCE,dci_alloc[i].dci_length,1<<dci_alloc[i].L,
2129 2130
              *(unsigned int*)dci_alloc[i].dci_pdu);
        dump_dci(frame_parms,&dci_alloc[i]);
2131
#endif
2132

2133
        if (dci_alloc[i].firstCCE>=0) {
2134
          e_ptr = generate_dci0(dci_alloc[i].dci_pdu,
2135
                                e+(72*dci_alloc[i].firstCCE),
2136 2137 2138 2139
                                dci_alloc[i].dci_length,
                                dci_alloc[i].L,
                                dci_alloc[i].rnti);
        }
2140 2141
      }
    }
2142 2143

    for (; i<num_ue_spec_dci + num_common_dci; i++) {
2144

2145
      if (dci_alloc[i].L == (uint8_t)L) {
2146

2147
#ifdef DEBUG_DCI_ENCODING
2148
        printf(" Generating UE (rnti %x) (nCCE %d) specific DCI %d of length %d, aggregation %d, format %d (%x)\n",dci_alloc[i].rnti,dci_alloc[i].firstCCE,i,dci_alloc[i].dci_length,1<<dci_alloc[i].L,dci_alloc[i].format,
2149 2150
              dci_alloc[i].dci_pdu);
        dump_dci(frame_parms,&dci_alloc[i]);
2151
#endif
2152

2153
        if (dci_alloc[i].firstCCE >= 0) {
2154
          e_ptr = generate_dci0(dci_alloc[i].dci_pdu,
2155
                                e+(72*dci_alloc[i].firstCCE),
2156 2157 2158 2159
                                dci_alloc[i].dci_length,
                                dci_alloc[i].L,
                                dci_alloc[i].rnti);
        }
2160 2161 2162
	else {
	  
	}
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      }
    }
  }

  // Scrambling
  //  printf("pdcch scrambling\n");
  pdcch_scrambling(frame_parms,
2170 2171
                   subframe,
                   e,
2172
                   8*get_nquad(num_pdcch_symbols, frame_parms, mi));
2173 2174
  //72*get_nCCE(num_pdcch_symbols,frame_parms,mi));

2175

2176

2177

2178
  // Now do modulation
2179 2180
  if (frame_parms->mode1_flag==1)
    gain_lin_QPSK = (int16_t)((amp*ONE_OVER_SQRT2_Q15)>>15);
2181
  else
2182
    gain_lin_QPSK = amp/2;
2183 2184

  e_ptr = e;
2185

2186 2187 2188 2189 2190
#ifdef DEBUG_DCI_ENCODING
  printf(" PDCCH Modulation, Msymb %d, Msymb2 %d,gain_lin_QPSK %d\n",Msymb,Msymb2,gain_lin_QPSK);
#endif


2191 2192
  if (frame_parms->mode1_flag) { //SISO

2193

2194
    for (i=0; i<Msymb2; i++) {
2195
      
2196 2197 2198 2199
      //((int16_t*)(&(y[0][i])))[0] = (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
      //((int16_t*)(&(y[1][i])))[0] = (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
      ((int16_t*)(&(y[0][i])))[0] = (*e_ptr == 2) ? 0 : (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
      ((int16_t*)(&(y[1][i])))[0] = (*e_ptr == 2) ? 0 : (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
2200
      e_ptr++;
2201 2202 2203 2204
      //((int16_t*)(&(y[0][i])))[1] = (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
      //((int16_t*)(&(y[1][i])))[1] = (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
      ((int16_t*)(&(y[0][i])))[1] = (*e_ptr == 2) ? 0 : (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
      ((int16_t*)(&(y[1][i])))[1] = (*e_ptr == 2) ? 0 : (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
2205 2206 2207

      e_ptr++;
    }
2208
  } else { //ALAMOUTI
2209

2210

2211
    for (i=0; i<Msymb2; i+=2) {
2212 2213

#ifdef DEBUG_DCI_ENCODING
2214
      printf(" PDCCH Modulation (TX diversity): REG %d\n",i>>2);
2215
#endif
2216
      // first antenna position n -> x0
2217
      ((int16_t*)&y[0][i])[0] = (*e_ptr==2) ? 0 : (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
2218
      e_ptr++;
2219
      ((int16_t*)&y[0][i])[1] = (*e_ptr==2) ? 0 : (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
2220
      e_ptr++;
2221

2222
      // second antenna position n -> -x1*
2223
      ((int16_t*)&y[1][i])[0] = (*e_ptr==2) ? 0 : (*e_ptr == 1) ? gain_lin_QPSK : -gain_lin_QPSK;
2224
      e_ptr++;
2225
      ((int16_t*)&y[1][i])[1] = (*e_ptr==2) ? 0 : (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
2226 2227 2228 2229 2230 2231 2232 2233 2234
      e_ptr++;

      // fill in the rest of the ALAMOUTI precoding
      ((int16_t*)&y[0][i+1])[0] = -((int16_t*)&y[1][i])[0];
      ((int16_t*)&y[0][i+1])[1] = ((int16_t*)&y[1][i])[1];
      ((int16_t*)&y[1][i+1])[0] = ((int16_t*)&y[0][i])[0];
      ((int16_t*)&y[1][i+1])[1] = -((int16_t*)&y[0][i])[1];

    }
2235 2236 2237 2238
  }


#ifdef DEBUG_DCI_ENCODING
2239
  printf(" PDCCH Interleaving\n");
2240 2241
#endif

2242
  //  printf("y %p (%p,%p), wbar %p (%p,%p)\n",y,y[0],y[1],wbar,wbar[0],wbar[1]);
2243 2244 2245 2246 2247 2248 2249 2250
  // This is the interleaving procedure defined in 36-211, first part of Section 6.8.5
  pdcch_interleaving(frame_parms,&y[0],&wbar[0],num_pdcch_symbols,mi);

  mprime=0;
  nsymb = (frame_parms->Ncp==0) ? 14:12;
  re_offset = frame_parms->first_carrier_offset;

  // This is the REG allocation algorithm from 36-211, second part of Section 6.8.5
2251
  //  printf("DCI (SF %d) : txdataF %p (0 %p)\n",subframe,&txdataF[0][512*14*subframe],&txdataF[0][0]);
2252 2253
  for (kprime=0; kprime<frame_parms->N_RB_DL*12; kprime++) {
    for (lprime=0; lprime<num_pdcch_symbols; lprime++) {
2254

2255
      symbol_offset = (uint32_t)frame_parms->ofdm_symbol_size*(lprime+(subframe*nsymb));
2256 2257


2258

2259 2260 2261 2262 2263 2264 2265 2266
      tti_offset = symbol_offset + re_offset;

      (re_offset==(frame_parms->ofdm_symbol_size-2)) ? (split_flag=1) : (split_flag=0);

      //            printf("kprime %d, lprime %d => REG %d (symbol %d)\n",kprime,lprime,(lprime==0)?(kprime/6) : (kprime>>2),symbol_offset);
      // if REG is allocated to PHICH, skip it
      if (check_phich_reg(frame_parms,kprime,lprime,mi) == 1) {
#ifdef DEBUG_DCI_ENCODING
2267
        printf("generate_dci: skipping REG %d (kprime %d, lprime %d)\n",(lprime==0)?(kprime/6) : (kprime>>2),kprime,lprime);
2268
#endif
2269 2270 2271 2272
      } else {
        // Copy REG to TX buffer

        if ((lprime == 0)||
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2273
            ((lprime==1)&&(frame_parms->nb_antenna_ports_eNB == 4))) {
2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284
          // first symbol, or second symbol+4 TX antennas skip pilots

          kprime_mod12 = kprime%12;

          if ((kprime_mod12 == 0) || (kprime_mod12 == 6)) {
            // kprime represents REG

            for (i=0; i<6; i++) {
              if ((i!=(nushiftmod3))&&(i!=(nushiftmod3+3))) {
                txdataF[0][tti_offset+i] = wbar[0][mprime];

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2285
                if (frame_parms->nb_antenna_ports_eNB > 1)
2286 2287
                  txdataF[1][tti_offset+i] = wbar[1][mprime];

2288
#ifdef DEBUG_DCI_ENCODING
2289
                printf(" PDCCH mapping mprime %d => %d (symbol %d re %d) -> (%d,%d)\n",mprime,tti_offset,symbol_offset,re_offset+i,*(short*)&wbar[0][mprime],*(1+(short*)&wbar[0][mprime]));
2290
#endif
2291

2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304
                mprime++;
              }
            }
          }
        } else { // no pilots in this symbol
          kprime_mod12 = kprime%12;

          if ((kprime_mod12 == 0) || (kprime_mod12 == 4) || (kprime_mod12 == 8)) {
            // kprime represents REG
            if (split_flag==0) {
              for (i=0; i<4; i++) {
                txdataF[0][tti_offset+i] = wbar[0][mprime];

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2305
                if (frame_parms->nb_antenna_ports_eNB > 1)
2306 2307
                  txdataF[1][tti_offset+i] = wbar[1][mprime];

2308
#ifdef DEBUG_DCI_ENCODING
2309
                LOG_I(PHY," PDCCH mapping mprime %d => %d (symbol %d re %d) -> (%d,%d)\n",mprime,tti_offset,symbol_offset,re_offset+i,*(short*)&wbar[0][mprime],*(1+(short*)&wbar[0][mprime]));
2310
#endif
2311 2312 2313 2314 2315
                mprime++;
              }
            } else {
              txdataF[0][tti_offset+0] = wbar[0][mprime];

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2316
              if (frame_parms->nb_antenna_ports_eNB > 1)
2317 2318
                txdataF[1][tti_offset+0] = wbar[1][mprime];

2319
#ifdef DEBUG_DCI_ENCODING
2320
              printf(" PDCCH mapping mprime %d => %d (symbol %d re %d) -> (%d,%d)\n",mprime,tti_offset,symbol_offset,re_offset,*(short*)&wbar[0][mprime],*(1+(short*)&wbar[0][mprime]));
2321
#endif
2322 2323 2324
              mprime++;
              txdataF[0][tti_offset+1] = wbar[0][mprime];

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2325
              if (frame_parms->nb_antenna_ports_eNB > 1)
2326 2327
                txdataF[1][tti_offset+1] = wbar[1][mprime];

2328
#ifdef DEBUG_DCI_ENCODING
2329
              printf("PDCCH mapping mprime %d => %d (symbol %d re %d) -> (%d,%d)\n",mprime,tti_offset,symbol_offset,re_offset+1,*(short*)&wbar[0][mprime],*(1+(short*)&wbar[0][mprime]));
2330
#endif
2331 2332 2333
              mprime++;
              txdataF[0][tti_offset-frame_parms->ofdm_symbol_size+3] = wbar[0][mprime];

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2334
              if (frame_parms->nb_antenna_ports_eNB > 1)
2335 2336
                txdataF[1][tti_offset-frame_parms->ofdm_symbol_size+3] = wbar[1][mprime];

2337
#ifdef DEBUG_DCI_ENCODING
2338
              printf(" PDCCH mapping mprime %d => %d (symbol %d re %d) -> (%d,%d)\n",mprime,tti_offset,symbol_offset,re_offset-frame_parms->ofdm_symbol_size+3,*(short*)&wbar[0][mprime],
2339
                    *(1+(short*)&wbar[0][mprime]));
2340
#endif
2341 2342 2343
              mprime++;
              txdataF[0][tti_offset-frame_parms->ofdm_symbol_size+4] = wbar[0][mprime];

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2344
              if (frame_parms->nb_antenna_ports_eNB > 1)
2345 2346
                txdataF[1][tti_offset-frame_parms->ofdm_symbol_size+4] = wbar[1][mprime];

2347
#ifdef DEBUG_DCI_ENCODING
2348
              printf(" PDCCH mapping mprime %d => %d (symbol %d re %d) -> (%d,%d)\n",mprime,tti_offset,symbol_offset,re_offset-frame_parms->ofdm_symbol_size+4,*(short*)&wbar[0][mprime],
2349
                    *(1+(short*)&wbar[0][mprime]));
2350
#endif
2351 2352 2353 2354 2355
              mprime++;

            }
          }
        }
2356

2357 2358
        if (mprime>=Msymb2)
          return(num_pdcch_symbols);
2359
      } // check_phich_reg
2360

2361
    } //lprime loop
2362

2363
    re_offset++;
2364

2365 2366 2367
    if (re_offset == (frame_parms->ofdm_symbol_size))
      re_offset = 1;
  } // kprime loop
2368

2369 2370 2371 2372
  return(num_pdcch_symbols);
}

#ifdef PHY_ABSTRACTION
2373
uint8_t generate_dci_top_emul(PHY_VARS_eNB *phy_vars_eNB,
2374 2375 2376 2377 2378
                              uint8_t num_ue_spec_dci,
                              uint8_t num_common_dci,
                              DCI_ALLOC_t *dci_alloc,
                              uint8_t subframe)
{
2379
  int n_dci, n_dci_dl;
2380
  uint8_t ue_id;
2381
  LTE_eNB_DLSCH_t *dlsch_eNB;
2382
  uint8_t num_pdcch_symbols = get_num_pdcch_symbols(num_ue_spec_dci+num_common_dci,
2383
                              dci_alloc,
2384
                              &phy_vars_eNB->frame_parms,
2385
                              subframe);
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2386
  eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].cntl.cfi=num_pdcch_symbols;
2387 2388 2389 2390

  memcpy(phy_vars_eNB->dci_alloc[subframe&1],dci_alloc,sizeof(DCI_ALLOC_t)*(num_ue_spec_dci+num_common_dci));
  phy_vars_eNB->num_ue_spec_dci[subframe&1]=num_ue_spec_dci;
  phy_vars_eNB->num_common_dci[subframe&1]=num_common_dci;
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2391 2392
  eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].num_ue_spec_dci = num_ue_spec_dci;
  eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].num_common_dci = num_common_dci;
2393

2394 2395 2396
  LOG_D(PHY,"[eNB %d][DCI][EMUL] CC id %d:  num spec dci %d num comm dci %d num PMCH %d \n",
        phy_vars_eNB->Mod_id, phy_vars_eNB->CC_id, num_ue_spec_dci,num_common_dci,
        eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].num_pmch);
2397

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2398 2399
  if (eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].cntl.pmch_flag == 1 )
    n_dci_dl = eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].num_pmch;
2400
  else
2401 2402
    n_dci_dl = 0;

2403
  for (n_dci =0 ;
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2404
       n_dci < (eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].num_ue_spec_dci+ eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].num_common_dci);
2405
       n_dci++) {
2406 2407 2408 2409

    if (dci_alloc[n_dci].format > 0) { // exclude the uplink dci

      if (dci_alloc[n_dci].rnti == SI_RNTI) {
2410
        dlsch_eNB = PHY_vars_eNB_g[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id]->dlsch_SI;
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        eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].dlsch_type[n_dci_dl] = 0;//SI;
        eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].harq_pid[n_dci_dl] = 0;
        eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].tbs[n_dci_dl] = dlsch_eNB->harq_processes[0]->TBS>>3;
        LOG_D(PHY,"[DCI][EMUL]SI tbs is %d and dci index %d harq pid is %d \n",eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].tbs[n_dci_dl],n_dci_dl,
              eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].harq_pid[n_dci_dl]);
      } else if (dci_alloc[n_dci_dl].ra_flag == 1) {
2417
        dlsch_eNB = PHY_vars_eNB_g[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id]->dlsch_ra;
2418 2419 2420 2421 2422 2423 2424 2425
        eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].dlsch_type[n_dci_dl] = 1;//RA;
        eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].harq_pid[n_dci_dl] = 0;
        eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].tbs[n_dci_dl] = dlsch_eNB->harq_processes[0]->TBS>>3;
        LOG_D(PHY,"[DCI][EMUL] RA  tbs is %d and dci index %d harq pid is %d \n",eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].tbs[n_dci_dl],n_dci_dl,
              eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].harq_pid[n_dci_dl]);
      } else {
        ue_id = find_ue(dci_alloc[n_dci_dl].rnti,PHY_vars_eNB_g[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id]);
        DevAssert( ue_id != (uint8_t)-1 );
2426
        dlsch_eNB = PHY_vars_eNB_g[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id]->dlsch[ue_id][0];
2427 2428 2429 2430 2431 2432 2433 2434 2435

        eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].dlsch_type[n_dci_dl] = 2;//TB0;
        eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].harq_pid[n_dci_dl] = dlsch_eNB->current_harq_pid;
        eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].ue_id[n_dci_dl] = ue_id;
        eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].tbs[n_dci_dl] = dlsch_eNB->harq_processes[dlsch_eNB->current_harq_pid]->TBS>>3;
        LOG_D(PHY,"[DCI][EMUL] TB1 tbs is %d and dci index %d harq pid is %d \n",eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].tbs[n_dci_dl],n_dci_dl,
              eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].harq_pid[n_dci_dl]);
        // check for TB1 later

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      }
    }
2438

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    n_dci_dl++;
  }
2441

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Raymond Knopp committed
2442
  memcpy((void *)&eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].dci_alloc,
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         (void *)dci_alloc,
         n_dci*sizeof(DCI_ALLOC_t));
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  return(num_pdcch_symbols);
}
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#endif

2450

2451
void dci_decoding(uint8_t DCI_LENGTH,
2452 2453 2454 2455
                  uint8_t aggregation_level,
                  int8_t *e,
                  uint8_t *decoded_output)
{
2456 2457 2458 2459

  uint8_t dummy_w_rx[3*(MAX_DCI_SIZE_BITS+16+64)];
  int8_t w_rx[3*(MAX_DCI_SIZE_BITS+16+32)],d_rx[96+(3*(MAX_DCI_SIZE_BITS+16))];

2460
  uint16_t RCC;
2461

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  uint16_t D=(DCI_LENGTH+16+64);
  uint16_t coded_bits;
2464
#ifdef DEBUG_DCI_DECODING
2465
  int32_t i;
2466
#endif
2467

2468
  if (aggregation_level>3) {
2469
    LOG_I(PHY," dci.c: dci_decoding FATAL, illegal aggregation_level %d\n",aggregation_level);
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    return;
  }

  coded_bits = 72 * (1<<aggregation_level);

#ifdef DEBUG_DCI_DECODING
2476
  LOG_I(PHY," Doing DCI decoding for %d bits, DCI_LENGTH %d,coded_bits %d, e %p\n",3*(DCI_LENGTH+16),DCI_LENGTH,coded_bits,e);
2477
#endif
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  // now do decoding
  memset((void*)dummy_w_rx,0,3*D);
  RCC = generate_dummy_w_cc(DCI_LENGTH+16,
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                            dummy_w_rx);

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#ifdef DEBUG_DCI_DECODING
2487
  LOG_I(PHY," Doing DCI Rate Matching RCC %d, w %p\n",RCC,w);
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#endif

  lte_rate_matching_cc_rx(RCC,coded_bits,w_rx,dummy_w_rx,e);
2491 2492 2493 2494 2495

  sub_block_deinterleaving_cc((uint32_t)(DCI_LENGTH+16),
                              &d_rx[96],
                              &w_rx[0]);

2496
#ifdef DEBUG_DCI_DECODING
2497 2498

  for (i=0; i<16+DCI_LENGTH; i++)
2499
    LOG_I(PHY," DCI %d : (%d,%d,%d)\n",i,*(d_rx+96+(3*i)),*(d_rx+97+(3*i)),*(d_rx+98+(3*i)));
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#endif
2502
  memset(decoded_output,0,2+((16+DCI_LENGTH)>>3));
2503

2504
#ifdef DEBUG_DCI_DECODING
2505
  printf("Before Viterbi\n");
2506

2507
  for (i=0; i<16+DCI_LENGTH; i++)
2508
    printf("%d : (%d,%d,%d)\n",i,*(d_rx+96+(3*i)),*(d_rx+97+(3*i)),*(d_rx+98+(3*i)));
2509 2510

#endif
2511
  //debug_printf("Doing DCI Viterbi \n");
2512
  phy_viterbi_lte_sse2(d_rx+96,decoded_output,16+DCI_LENGTH);
2513
  //debug_printf("Done DCI Viterbi \n");
2514 2515 2516
}


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2517
static uint8_t dci_decoded_output[2][(MAX_DCI_SIZE_BITS+64)/8];
2518

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uint16_t get_nCCE(uint8_t num_pdcch_symbols,LTE_DL_FRAME_PARMS *frame_parms,uint8_t mi)
{
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  return(get_nquad(num_pdcch_symbols,frame_parms,mi)/9);
}

2524 2525
uint16_t get_nquad(uint8_t num_pdcch_symbols,LTE_DL_FRAME_PARMS *frame_parms,uint8_t mi)
{
2526

2527
  uint16_t Nreg=0;
2528
  uint8_t Ngroup_PHICH = (frame_parms->phich_config_common.phich_resource*frame_parms->N_RB_DL)/48;
2529 2530 2531 2532 2533 2534 2535

  if (((frame_parms->phich_config_common.phich_resource*frame_parms->N_RB_DL)%48) > 0)
    Ngroup_PHICH++;

  if (frame_parms->Ncp == 1) {
    Ngroup_PHICH<<=1;
  }
2536

2537 2538 2539 2540 2541 2542 2543
  Ngroup_PHICH*=mi;

  if ((num_pdcch_symbols>0) && (num_pdcch_symbols<4))
    switch (frame_parms->N_RB_DL) {
    case 6:
      Nreg=12+(num_pdcch_symbols-1)*18;
      break;
2544

2545 2546 2547
    case 25:
      Nreg=50+(num_pdcch_symbols-1)*75;
      break;
2548

2549 2550 2551
    case 50:
      Nreg=100+(num_pdcch_symbols-1)*150;
      break;
2552

2553 2554 2555
    case 100:
      Nreg=200+(num_pdcch_symbols-1)*300;
      break;
2556

2557 2558 2559
    default:
      return(0);
    }
2560

2561 2562 2563 2564
  //   printf("Nreg %d (%d)\n",Nreg,Nreg - 4 - (3*Ngroup_PHICH));
  return(Nreg - 4 - (3*Ngroup_PHICH));
}

2565
uint16_t get_nCCE_mac(uint8_t Mod_id,uint8_t CC_id,int num_pdcch_symbols,int subframe)
2566
{
2567 2568

  // check for eNB only !
2569
  return(get_nCCE(num_pdcch_symbols,
2570 2571
		  &PHY_vars_eNB_g[Mod_id][CC_id]->frame_parms,
		  get_mi(&PHY_vars_eNB_g[Mod_id][CC_id]->frame_parms,subframe))); 
2572 2573
}

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int get_nCCE_offset_l1(int *CCE_table,
		       const unsigned char L, 
		       const int nCCE, 
		       const int common_dci, 
		       const unsigned short rnti, 
		       const unsigned char subframe)
{

  int search_space_free,m,nb_candidates = 0,l,i;
  unsigned int Yk;
   /*
    printf("CCE Allocation: ");
    for (i=0;i<nCCE;i++)
    printf("%d.",CCE_table[i]);
    printf("\n");
  */
  if (common_dci == 1) {
    // check CCE(0 ... L-1)
    nb_candidates = (L==4) ? 4 : 2;
    nb_candidates = min(nb_candidates,nCCE/L);

    //    printf("Common DCI nb_candidates %d, L %d\n",nb_candidates,L);

    for (m = nb_candidates-1 ; m >=0 ; m--) {

      search_space_free = 1;
      for (l=0; l<L; l++) {

	//	printf("CCE_table[%d] %d\n",(m*L)+l,CCE_table[(m*L)+l]);
        if (CCE_table[(m*L) + l] == 1) {
          search_space_free = 0;
          break;
        }
      }
     
      if (search_space_free == 1) {

	//	printf("returning %d\n",m*L);

        for (l=0; l<L; l++)
          CCE_table[(m*L)+l]=1;
        return(m*L);
      }
    }

    return(-1);

  } else { // Find first available in ue specific search space
    // according to procedure in Section 9.1.1 of 36.213 (v. 8.6)
    // compute Yk
    Yk = (unsigned int)rnti;

    for (i=0; i<=subframe; i++)
      Yk = (Yk*39827)%65537;

    Yk = Yk % (nCCE/L);


    switch (L) {
    case 1:
    case 2:
      nb_candidates = 6;
      break;

    case 4:
    case 8:
      nb_candidates = 2;
      break;

    default:
      DevParam(L, nCCE, rnti);
      break;
    }


    LOG_D(MAC,"rnti %x, Yk = %d, nCCE %d (nCCE/L %d),nb_cand %d\n",rnti,Yk,nCCE,nCCE/L,nb_candidates);

    for (m = 0 ; m < nb_candidates ; m++) {
      search_space_free = 1;

      for (l=0; l<L; l++) {
        if (CCE_table[(((Yk+m)%(nCCE/L))*L) + l] == 1) {
          search_space_free = 0;
          break;
        }
      }

      if (search_space_free == 1) {
        for (l=0; l<L; l++)
          CCE_table[(((Yk+m)%(nCCE/L))*L)+l]=1;

        return(((Yk+m)%(nCCE/L))*L);
      }
    }

    return(-1);
  }
}


2675
void dci_decoding_procedure0(LTE_UE_PDCCH **pdcch_vars,
2676
			     int do_common,
2677
			     dci_detect_mode_t mode,
2678
			     uint8_t subframe,
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                             DCI_ALLOC_t *dci_alloc,
                             int16_t eNB_id,
                             LTE_DL_FRAME_PARMS *frame_parms,
                             uint8_t mi,
                             uint16_t si_rnti,
                             uint16_t ra_rnti,
2685
                             uint16_t p_rnti,
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                             uint8_t L,
                             uint8_t format_si,
2688
                             uint8_t format_p,
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                             uint8_t format_ra,
                             uint8_t format_c,
                             uint8_t sizeof_bits,
                             uint8_t sizeof_bytes,
                             uint8_t *dci_cnt,
                             uint8_t *format0_found,
                             uint8_t *format_c_found,
                             uint32_t *CCEmap0,
                             uint32_t *CCEmap1,
                             uint32_t *CCEmap2)
{

2701 2702
  uint16_t crc,CCEind,nCCE;
  uint32_t *CCEmap=NULL,CCEmap_mask=0;
2703
  int L2=(1<<L);
2704
  unsigned int Yk,nb_candidates = 0,i,m;
2705 2706
  unsigned int CCEmap_cand;

2707
  nCCE = get_nCCE(pdcch_vars[eNB_id]->num_pdcch_symbols,frame_parms,mi);
2708

2709 2710
  if (nCCE > get_nCCE(3,frame_parms,1)) {
    LOG_D(PHY,"skip DCI decoding: nCCE=%d > get_nCCE(3,frame_parms,1)=%d\n", nCCE, get_nCCE(3,frame_parms,1));
2711
    return;
2712
  }
2713

2714 2715
  if (nCCE<L2) {
    LOG_D(PHY,"skip DCI decoding: nCCE=%d < L2=%d\n", nCCE, L2);
2716
    return;
2717
  }
2718

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  if (mode == NO_DCI) {
    LOG_D(PHY, "skip DCI decoding: expect no DCIs at subframe %d\n", subframe);
    return;
  }

2724 2725 2726
  if (do_common == 1) {
    nb_candidates = (L2==4) ? 4 : 2;
    Yk=0;
2727
  } else {
2728 2729 2730
    // Find first available in ue specific search space
    // according to procedure in Section 9.1.1 of 36.213 (v. 8.6)
    // compute Yk
2731
    Yk = (unsigned int)pdcch_vars[eNB_id]->crnti;
2732

2733
    for (i=0; i<=subframe; i++)
2734 2735 2736 2737 2738 2739 2740 2741 2742
      Yk = (Yk*39827)%65537;

    Yk = Yk % (nCCE/L2);

    switch (L2) {
    case 1:
    case 2:
      nb_candidates = 6;
      break;
2743

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    case 4:
    case 8:
      nb_candidates = 2;
      break;
2748

2749 2750 2751
    default:
      DevParam(L2, do_common, eNB_id);
      break;
2752
    }
2753
  }
2754

2755 2756 2757 2758 2759 2760 2761
  /*  for (CCEind=0;
       CCEind<nCCE2;
       CCEind+=(1<<L)) {*/

  if (nb_candidates*L2 > nCCE)
    nb_candidates = nCCE/L2;

2762
  for (m=0; m<nb_candidates; m++) {
2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773

    CCEind = (((Yk+m)%(nCCE/L2))*L2);

    if (CCEind<32)
      CCEmap = CCEmap0;
    else if (CCEind<64)
      CCEmap = CCEmap1;
    else if (CCEind<96)
      CCEmap = CCEmap2;
    else {
      LOG_E(PHY,"Illegal CCEind %d (Yk %d, m %d, nCCE %d, L2 %d\n",CCEind,Yk,m,nCCE,L2);
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Florian Kaltenberger committed
2774
      mac_xface->macphy_exit("Illegal CCEind\n");
2775
      return; // not reached
2776
    }
2777

2778 2779 2780 2781
    switch (L2) {
    case 1:
      CCEmap_mask = (1<<(CCEind&0x1f));
      break;
2782

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    case 2:
      CCEmap_mask = (3<<(CCEind&0x1f));
      break;
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    case 4:
      CCEmap_mask = (0xf<<(CCEind&0x1f));
      break;
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    case 8:
      CCEmap_mask = (0xff<<(CCEind&0x1f));
      break;
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    default:
      LOG_E( PHY, "Illegal L2 value %d\n", L2 );
      mac_xface->macphy_exit( "Illegal L2\n" );
      return; // not reached
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    }

2801
    CCEmap_cand = (*CCEmap)&CCEmap_mask;
2802 2803

    // CCE is not allocated yet
2804 2805 2806

    if (CCEmap_cand == 0) {
#ifdef DEBUG_DCI_DECODING
2807 2808

      if (do_common == 1)
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2809 2810
        LOG_I(PHY,"[DCI search nPdcch %d - common] Attempting candidate %d Aggregation Level %d DCI length %d at CCE %d/%d (CCEmap %x,CCEmap_cand %x)\n",
                pdcch_vars[eNB_id]->num_pdcch_symbols,m,L2,sizeof_bits,CCEind,nCCE,*CCEmap,CCEmap_mask);
2811
      else
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        LOG_I(PHY,"[DCI search nPdcch %d - ue spec] Attempting candidate %d Aggregation Level %d DCI length %d at CCE %d/%d (CCEmap %x,CCEmap_cand %x)\n",
                pdcch_vars[eNB_id]->num_pdcch_symbols,m,L2,sizeof_bits,CCEind,nCCE,*CCEmap,CCEmap_mask);
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#endif

      dci_decoding(sizeof_bits,
                   L,
2819
                   &pdcch_vars[eNB_id]->e_rx[CCEind*72],
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2820
                   &dci_decoded_output[subframe&0x1][0]);
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      /*
        for (i=0;i<3+(sizeof_bits>>3);i++)
        printf("dci_decoded_output[%d] => %x\n",i,dci_decoded_output[i]);
      */
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2825
      crc = (crc16(&dci_decoded_output[subframe&0x1][0],sizeof_bits)>>16) ^ extract_crc(&dci_decoded_output[subframe&0x1][0],sizeof_bits);
2826
#ifdef DEBUG_DCI_DECODING
2827
      printf("crc =>%x\n",crc);
2828
#endif
2829 2830

      if (((L>1) && ((crc == si_rnti)||
2831
		     (crc == p_rnti)||
2832
                     (crc == ra_rnti)))||
2833
          (crc == pdcch_vars[eNB_id]->crnti))   {
2834 2835 2836
        dci_alloc[*dci_cnt].dci_length = sizeof_bits;
        dci_alloc[*dci_cnt].rnti       = crc;
        dci_alloc[*dci_cnt].L          = L;
2837
        dci_alloc[*dci_cnt].firstCCE   = CCEind;
2838

hbilel's avatar
hbilel committed
2839
        //printf("DCI FOUND !!! crc =>%x,  sizeof_bits %d, sizeof_bytes %d \n",crc, sizeof_bits, sizeof_bytes);
2840
        if (sizeof_bytes<=4) {
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          dci_alloc[*dci_cnt].dci_pdu[3] = dci_decoded_output[subframe&0x1][0];
          dci_alloc[*dci_cnt].dci_pdu[2] = dci_decoded_output[subframe&0x1][1];
          dci_alloc[*dci_cnt].dci_pdu[1] = dci_decoded_output[subframe&0x1][2];
          dci_alloc[*dci_cnt].dci_pdu[0] = dci_decoded_output[subframe&0x1][3];
2845
#ifdef DEBUG_DCI_DECODING
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          printf("DCI => %x,%x,%x,%x\n",dci_decoded_output[subframe&0x1][0],
                  dci_decoded_output[subframe&0x1][1],
                  dci_decoded_output[subframe&0x1][2],
                  dci_decoded_output[subframe&0x1][3]);
2850
#endif
2851
        } else {
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          dci_alloc[*dci_cnt].dci_pdu[7] = dci_decoded_output[subframe&0x1][0];
          dci_alloc[*dci_cnt].dci_pdu[6] = dci_decoded_output[subframe&0x1][1];
          dci_alloc[*dci_cnt].dci_pdu[5] = dci_decoded_output[subframe&0x1][2];
          dci_alloc[*dci_cnt].dci_pdu[4] = dci_decoded_output[subframe&0x1][3];
          dci_alloc[*dci_cnt].dci_pdu[3] = dci_decoded_output[subframe&0x1][4];
          dci_alloc[*dci_cnt].dci_pdu[2] = dci_decoded_output[subframe&0x1][5];
          dci_alloc[*dci_cnt].dci_pdu[1] = dci_decoded_output[subframe&0x1][6];
          dci_alloc[*dci_cnt].dci_pdu[0] = dci_decoded_output[subframe&0x1][7];
2860
#ifdef DEBUG_DCI_DECODING
2861
          printf("DCI => %x,%x,%x,%x,%x,%x,%x,%x\n",
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              dci_decoded_output[subframe&0x1][0],dci_decoded_output[subframe&0x1][1],dci_decoded_output[subframe&0x1][2],dci_decoded_output[subframe&0x1][3],
              dci_decoded_output[subframe&0x1][4],dci_decoded_output[subframe&0x1][5],dci_decoded_output[subframe&0x1][6],dci_decoded_output[subframe&0x1][7]);
2864
#endif
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        }

        if (crc==si_rnti) {
          dci_alloc[*dci_cnt].format     = format_si;
          *dci_cnt = *dci_cnt+1;
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        } else if (crc==p_rnti) {
          dci_alloc[*dci_cnt].format     = format_p;
          *dci_cnt = *dci_cnt+1;
2873 2874 2875
        } else if (crc==ra_rnti) {
          dci_alloc[*dci_cnt].format     = format_ra;
          // store first nCCE of group for PUCCH transmission of ACK/NAK
2876
          pdcch_vars[eNB_id]->nCCE[subframe]=CCEind;
2877
          *dci_cnt = *dci_cnt+1;
2878
        } else if (crc==pdcch_vars[eNB_id]->crnti) {
2879

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2880
          if ((mode&UL_DCI)&&(format_c == format0)&&((dci_decoded_output[subframe&0x1][0]&0x80)==0)) {// check if pdu is format 0 or 1A
2881 2882 2883 2884
            if (*format0_found == 0) {
              dci_alloc[*dci_cnt].format     = format0;
              *format0_found = 1;
              *dci_cnt = *dci_cnt+1;
2885
              pdcch_vars[eNB_id]->nCCE[subframe]=CCEind;
2886 2887 2888 2889
            }
          } else if (format_c == format0) { // this is a format 1A DCI
            dci_alloc[*dci_cnt].format     = format1A;
            *dci_cnt = *dci_cnt+1;
2890
            pdcch_vars[eNB_id]->nCCE[subframe]=CCEind;
2891 2892 2893 2894 2895 2896
          } else {
            // store first nCCE of group for PUCCH transmission of ACK/NAK
            if (*format_c_found == 0) {
              dci_alloc[*dci_cnt].format     = format_c;
              *dci_cnt = *dci_cnt+1;
              *format_c_found = 1;
2897
              pdcch_vars[eNB_id]->nCCE[subframe]=CCEind;
2898 2899 2900 2901
            }
          }
        }

2902
        LOG_D(PHY,"DCI decoding CRNTI  [format: %d, nCCE[subframe: %d]: %d ], AggregationLevel %d \n",format_c, subframe, pdcch_vars[eNB_id]->nCCE[subframe],L2);
2903 2904 2905 2906 2907 2908 2909 2910 2911 2912
        //  memcpy(&dci_alloc[*dci_cnt].dci_pdu[0],dci_decoded_output,sizeof_bytes);



        switch (1<<L) {
        case 1:
          *CCEmap|=(1<<(CCEind&0x1f));
          break;

        case 2:
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          *CCEmap|=(1<<(CCEind&0x1f));
2914 2915 2916
          break;

        case 4:
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2917
          *CCEmap|=(1<<(CCEind&0x1f));
2918 2919 2920
          break;

        case 8:
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2921
          *CCEmap|=(1<<(CCEind&0x1f));
2922 2923 2924
          break;
        }

2925
#ifdef DEBUG_DCI_DECODING
2926 2927 2928 2929
        LOG_I(PHY,"[DCI search] Found DCI %d rnti %x Aggregation %d length %d format %s in CCE %d (CCEmap %x)\n",
              *dci_cnt,crc,1<<L,sizeof_bits,dci_format_strings[dci_alloc[*dci_cnt-1].format],CCEind,*CCEmap);
        dump_dci(frame_parms,&dci_alloc[*dci_cnt-1]);

2930
#endif
2931

2932
        //  if (crc==pdcch_vars[eNB_id]->crnti)
2933 2934 2935
        //    return;
      } // rnti match
    }  // CCEmap_cand == 0
2936 2937 2938
  } // candidate loop
}

2939
uint16_t dci_decoding_procedure(PHY_VARS_UE *ue,
2940 2941 2942 2943 2944 2945
                                DCI_ALLOC_t *dci_alloc,
                                int do_common,
                                int16_t eNB_id,
                                uint8_t subframe)
{

2946 2947
  uint8_t  dci_cnt=0,old_dci_cnt=0;
  uint32_t CCEmap0=0,CCEmap1=0,CCEmap2=0;
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  LTE_UE_PDCCH **pdcch_vars = ue->pdcch_vars[subframe & 0x1];
2949 2950
  LTE_DL_FRAME_PARMS *frame_parms  = &ue->frame_parms;
  uint8_t mi = get_mi(&ue->frame_parms,subframe);
2951 2952
  uint16_t ra_rnti=99;
  uint8_t format0_found=0,format_c_found=0;
2953
  uint8_t tmode = ue->transmission_mode[eNB_id];
2954
  uint8_t frame_type = frame_parms->frame_type;
2955
  uint8_t format1A_size_bits=0,format1A_size_bytes=0;
2956
  uint8_t format1C_size_bits=0,format1C_size_bytes=0;
2957 2958 2959 2960
  uint8_t format0_size_bits=0,format0_size_bytes=0;
  uint8_t format1_size_bits=0,format1_size_bytes=0;
  uint8_t format2_size_bits=0,format2_size_bytes=0;
  uint8_t format2A_size_bits=0,format2A_size_bytes=0;
2961
  dci_detect_mode_t mode = dci_detect_mode_select(&ue->frame_parms,subframe);
2962 2963 2964 2965 2966 2967

  switch (frame_parms->N_RB_DL) {
  case 6:
    if (frame_type == TDD) {
      format1A_size_bits  = sizeof_DCI1A_1_5MHz_TDD_1_6_t;
      format1A_size_bytes = sizeof(DCI1A_1_5MHz_TDD_1_6_t);
2968 2969
      format1C_size_bits  = sizeof_DCI1C_1_5MHz_t;
      format1C_size_bytes = sizeof(DCI1C_1_5MHz_t);
2970 2971 2972 2973
      format0_size_bits  = sizeof_DCI0_1_5MHz_TDD_1_6_t;
      format0_size_bytes = sizeof(DCI0_1_5MHz_TDD_1_6_t);
      format1_size_bits  = sizeof_DCI1_1_5MHz_TDD_t;
      format1_size_bytes = sizeof(DCI1_1_5MHz_TDD_t);
2974

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      if (frame_parms->nb_antenna_ports_eNB == 2) {
2976 2977 2978 2979
        format2_size_bits  = sizeof_DCI2_1_5MHz_2A_TDD_t;
        format2_size_bytes = sizeof(DCI2_1_5MHz_2A_TDD_t);
        format2A_size_bits  = sizeof_DCI2A_1_5MHz_2A_TDD_t;
        format2A_size_bytes = sizeof(DCI2A_1_5MHz_2A_TDD_t);
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      } else if (frame_parms->nb_antenna_ports_eNB == 4) {
2981 2982 2983 2984
        format2_size_bits  = sizeof_DCI2_1_5MHz_4A_TDD_t;
        format2_size_bytes = sizeof(DCI2_1_5MHz_4A_TDD_t);
        format2A_size_bits  = sizeof_DCI2A_1_5MHz_4A_TDD_t;
        format2A_size_bytes = sizeof(DCI2A_1_5MHz_4A_TDD_t);
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2985
      }
2986
    } else {
2987 2988
      format1A_size_bits  = sizeof_DCI1A_1_5MHz_FDD_t;
      format1A_size_bytes = sizeof(DCI1A_1_5MHz_FDD_t);
2989 2990
      format1C_size_bits  = sizeof_DCI1C_1_5MHz_t;
      format1C_size_bytes = sizeof(DCI1C_1_5MHz_t);
2991 2992 2993 2994
      format0_size_bits  = sizeof_DCI0_1_5MHz_FDD_t;
      format0_size_bytes = sizeof(DCI0_1_5MHz_FDD_t);
      format1_size_bits  = sizeof_DCI1_1_5MHz_FDD_t;
      format1_size_bytes = sizeof(DCI1_1_5MHz_FDD_t);
2995

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2996
      if (frame_parms->nb_antenna_ports_eNB == 2) {
2997 2998 2999 3000
        format2_size_bits  = sizeof_DCI2_1_5MHz_2A_FDD_t;
        format2_size_bytes = sizeof(DCI2_1_5MHz_2A_FDD_t);
        format2A_size_bits  = sizeof_DCI2A_1_5MHz_2A_FDD_t;
        format2A_size_bytes = sizeof(DCI2A_1_5MHz_2A_FDD_t);
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      } else if (frame_parms->nb_antenna_ports_eNB == 4) {
3002 3003 3004 3005
        format2_size_bits  = sizeof_DCI2_1_5MHz_4A_FDD_t;
        format2_size_bytes = sizeof(DCI2_1_5MHz_4A_FDD_t);
        format2A_size_bits  = sizeof_DCI2A_1_5MHz_4A_FDD_t;
        format2A_size_bytes = sizeof(DCI2A_1_5MHz_4A_FDD_t);
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      }
3007
    }
3008

3009
    break;
3010

3011
  case 25:
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3012
  default:
3013 3014 3015
    if (frame_type == TDD) {
      format1A_size_bits  = sizeof_DCI1A_5MHz_TDD_1_6_t;
      format1A_size_bytes = sizeof(DCI1A_5MHz_TDD_1_6_t);
3016 3017
      format1C_size_bits  = sizeof_DCI1C_5MHz_t;
      format1C_size_bytes = sizeof(DCI1C_5MHz_t);
3018 3019 3020 3021
      format0_size_bits  = sizeof_DCI0_5MHz_TDD_1_6_t;
      format0_size_bytes = sizeof(DCI0_5MHz_TDD_1_6_t);
      format1_size_bits  = sizeof_DCI1_5MHz_TDD_t;
      format1_size_bytes = sizeof(DCI1_5MHz_TDD_t);
3022

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      if (frame_parms->nb_antenna_ports_eNB == 2) {
3024 3025 3026 3027
        format2_size_bits  = sizeof_DCI2_5MHz_2A_TDD_t;
        format2_size_bytes = sizeof(DCI2_5MHz_2A_TDD_t);
        format2A_size_bits  = sizeof_DCI2A_5MHz_2A_TDD_t;
        format2A_size_bytes = sizeof(DCI2A_5MHz_2A_TDD_t);
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      } else if (frame_parms->nb_antenna_ports_eNB == 4) {
3029 3030 3031 3032
        format2_size_bits  = sizeof_DCI2_5MHz_4A_TDD_t;
        format2_size_bytes = sizeof(DCI2_5MHz_4A_TDD_t);
        format2A_size_bits  = sizeof_DCI2A_5MHz_4A_TDD_t;
        format2A_size_bytes = sizeof(DCI2A_5MHz_4A_TDD_t);
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      }
3034
    } else {
3035 3036
      format1A_size_bits  = sizeof_DCI1A_5MHz_FDD_t;
      format1A_size_bytes = sizeof(DCI1A_5MHz_FDD_t);
3037 3038
      format1C_size_bits  = sizeof_DCI1C_5MHz_t;
      format1C_size_bytes = sizeof(DCI1C_5MHz_t);
3039 3040 3041 3042
      format0_size_bits  = sizeof_DCI0_5MHz_FDD_t;
      format0_size_bytes = sizeof(DCI0_5MHz_FDD_t);
      format1_size_bits  = sizeof_DCI1_5MHz_FDD_t;
      format1_size_bytes = sizeof(DCI1_5MHz_FDD_t);
3043

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      if (frame_parms->nb_antenna_ports_eNB == 2) {
3045 3046 3047 3048
        format2_size_bits  = sizeof_DCI2_5MHz_2A_FDD_t;
        format2_size_bytes = sizeof(DCI2_5MHz_2A_FDD_t);
        format2A_size_bits  = sizeof_DCI2A_5MHz_2A_FDD_t;
        format2A_size_bytes = sizeof(DCI2A_5MHz_2A_FDD_t);
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      } else if (frame_parms->nb_antenna_ports_eNB == 4) {
3050 3051 3052 3053
        format2_size_bits  = sizeof_DCI2_5MHz_4A_FDD_t;
        format2_size_bytes = sizeof(DCI2_5MHz_4A_FDD_t);
        format2A_size_bits  = sizeof_DCI2A_5MHz_4A_FDD_t;
        format2A_size_bytes = sizeof(DCI2A_5MHz_4A_FDD_t);
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3054
      }
3055
    }
3056

3057
    break;
3058

3059 3060 3061 3062
  case 50:
    if (frame_type == TDD) {
      format1A_size_bits  = sizeof_DCI1A_10MHz_TDD_1_6_t;
      format1A_size_bytes = sizeof(DCI1A_10MHz_TDD_1_6_t);
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3063 3064
      format1C_size_bits  = sizeof_DCI1C_10MHz_t;
      format1C_size_bytes = sizeof(DCI1C_10MHz_t);
3065 3066 3067 3068
      format0_size_bits  = sizeof_DCI0_10MHz_TDD_1_6_t;
      format0_size_bytes = sizeof(DCI0_10MHz_TDD_1_6_t);
      format1_size_bits  = sizeof_DCI1_10MHz_TDD_t;
      format1_size_bytes = sizeof(DCI1_10MHz_TDD_t);
3069

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3070
      if (frame_parms->nb_antenna_ports_eNB == 2) {
3071 3072 3073 3074
        format2_size_bits  = sizeof_DCI2_10MHz_2A_TDD_t;
        format2_size_bytes = sizeof(DCI2_10MHz_2A_TDD_t);
        format2A_size_bits  = sizeof_DCI2A_10MHz_2A_TDD_t;
        format2A_size_bytes = sizeof(DCI2A_10MHz_2A_TDD_t);
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      } else if (frame_parms->nb_antenna_ports_eNB == 4) {
3076 3077 3078 3079
        format2_size_bits  = sizeof_DCI2_10MHz_4A_TDD_t;
        format2_size_bytes = sizeof(DCI2_10MHz_4A_TDD_t);
        format2A_size_bits  = sizeof_DCI2A_10MHz_4A_TDD_t;
        format2A_size_bytes = sizeof(DCI2A_10MHz_4A_TDD_t);
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      }
3081
    } else {
3082 3083
      format1A_size_bits  = sizeof_DCI1A_10MHz_FDD_t;
      format1A_size_bytes = sizeof(DCI1A_10MHz_FDD_t);
3084 3085
      format1C_size_bits  = sizeof_DCI1C_10MHz_t;
      format1C_size_bytes = sizeof(DCI1C_10MHz_t);
3086 3087 3088 3089
      format0_size_bits  = sizeof_DCI0_10MHz_FDD_t;
      format0_size_bytes = sizeof(DCI0_10MHz_FDD_t);
      format1_size_bits  = sizeof_DCI1_10MHz_FDD_t;
      format1_size_bytes = sizeof(DCI1_10MHz_FDD_t);
3090

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3091
      if (frame_parms->nb_antenna_ports_eNB == 2) {
3092 3093 3094 3095
        format2_size_bits  = sizeof_DCI2_10MHz_2A_FDD_t;
        format2_size_bytes = sizeof(DCI2_10MHz_2A_FDD_t);
        format2A_size_bits  = sizeof_DCI2A_10MHz_2A_FDD_t;
        format2A_size_bytes = sizeof(DCI2A_10MHz_2A_FDD_t);
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      } else if (frame_parms->nb_antenna_ports_eNB == 4) {
3097 3098 3099 3100
        format2_size_bits  = sizeof_DCI2_10MHz_4A_FDD_t;
        format2_size_bytes = sizeof(DCI2_10MHz_4A_FDD_t);
        format2A_size_bits  = sizeof_DCI2A_10MHz_4A_FDD_t;
        format2A_size_bytes = sizeof(DCI2A_10MHz_4A_FDD_t);
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3101
      }
3102
    }
3103

3104 3105 3106 3107 3108 3109
    break;

  case 100:
    if (frame_type == TDD) {
      format1A_size_bits  = sizeof_DCI1A_20MHz_TDD_1_6_t;
      format1A_size_bytes = sizeof(DCI1A_20MHz_TDD_1_6_t);
3110 3111
      format1C_size_bits  = sizeof_DCI1C_20MHz_t;
      format1C_size_bytes = sizeof(DCI1C_20MHz_t);
3112 3113 3114 3115
      format0_size_bits  = sizeof_DCI0_20MHz_TDD_1_6_t;
      format0_size_bytes = sizeof(DCI0_20MHz_TDD_1_6_t);
      format1_size_bits  = sizeof_DCI1_20MHz_TDD_t;
      format1_size_bytes = sizeof(DCI1_20MHz_TDD_t);
3116

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3117
      if (frame_parms->nb_antenna_ports_eNB == 2) {
3118 3119 3120 3121
        format2_size_bits  = sizeof_DCI2_20MHz_2A_TDD_t;
        format2_size_bytes = sizeof(DCI2_20MHz_2A_TDD_t);
        format2A_size_bits  = sizeof_DCI2A_20MHz_2A_TDD_t;
        format2A_size_bytes = sizeof(DCI2A_20MHz_2A_TDD_t);
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3122
      } else if (frame_parms->nb_antenna_ports_eNB == 4) {
3123 3124 3125 3126
        format2_size_bits  = sizeof_DCI2_20MHz_4A_TDD_t;
        format2_size_bytes = sizeof(DCI2_20MHz_4A_TDD_t);
        format2A_size_bits  = sizeof_DCI2A_20MHz_4A_TDD_t;
        format2A_size_bytes = sizeof(DCI2A_20MHz_4A_TDD_t);
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      }
3128
    } else {
3129 3130
      format1A_size_bits  = sizeof_DCI1A_20MHz_FDD_t;
      format1A_size_bytes = sizeof(DCI1A_20MHz_FDD_t);
3131 3132
      format1C_size_bits  = sizeof_DCI1C_20MHz_t;
      format1C_size_bytes = sizeof(DCI1C_20MHz_t);
3133 3134 3135 3136
      format0_size_bits  = sizeof_DCI0_20MHz_FDD_t;
      format0_size_bytes = sizeof(DCI0_20MHz_FDD_t);
      format1_size_bits  = sizeof_DCI1_20MHz_FDD_t;
      format1_size_bytes = sizeof(DCI1_20MHz_FDD_t);
3137

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3138
      if (frame_parms->nb_antenna_ports_eNB == 2) {
3139 3140 3141 3142
        format2_size_bits  = sizeof_DCI2_20MHz_2A_FDD_t;
        format2_size_bytes = sizeof(DCI2_20MHz_2A_FDD_t);
        format2A_size_bits  = sizeof_DCI2A_20MHz_2A_FDD_t;
        format2A_size_bytes = sizeof(DCI2A_20MHz_2A_FDD_t);
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      } else if (frame_parms->nb_antenna_ports_eNB == 4) {
3144 3145 3146 3147
        format2_size_bits  = sizeof_DCI2_20MHz_4A_FDD_t;
        format2_size_bytes = sizeof(DCI2_20MHz_4A_FDD_t);
        format2A_size_bits  = sizeof_DCI2A_20MHz_4A_FDD_t;
        format2A_size_bytes = sizeof(DCI2A_20MHz_4A_FDD_t);
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3148
      }
3149
    }
3150

3151 3152 3153
    break;
  }

3154
  if (do_common == 1) {
3155 3156 3157
#ifdef DEBUG_DCI_DECODING
    printf("[DCI search] doing common search/format0 aggregation 4\n");
#endif
3158

3159 3160
    if (ue->prach_resources[eNB_id])
      ra_rnti = ue->prach_resources[eNB_id]->ra_RNTI;
3161

3162
    // First check common search spaces at aggregation 4 (SI_RNTI, P_RNTI and RA_RNTI format 0/1A),
3163
    // and UE_SPEC format0 (PUSCH) too while we're at it
3164
    dci_decoding_procedure0(pdcch_vars,1,mode,subframe,
3165 3166 3167 3168
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3169
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0) ,
3170
                            ra_rnti,
3171
			    P_RNTI,
3172 3173 3174
                            2,
                            format1A,
                            format1A,
3175
                            format1A,
3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187
                            format0,
                            format1A_size_bits,
                            format1A_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);

    if ((CCEmap0==0xffff) ||
        ((format0_found==1)&&(format_c_found==1)))
3188
      return(dci_cnt);
3189

3190
    // Now check common search spaces at aggregation 4 (SI_RNTI,P_RNTI and RA_RNTI and C-RNTI format 1C),
3191
    // and UE_SPEC format0 (PUSCH) too while we're at it
3192
    dci_decoding_procedure0(pdcch_vars,1,mode,subframe,
3193 3194 3195 3196
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3197
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3198
                            ra_rnti,
3199
			    P_RNTI,
3200 3201 3202 3203
                            2,
                            format1C,
                            format1C,
                            format1C,
3204
                            format1C,
3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217
                            format1C_size_bits,
                            format1C_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);

    if ((CCEmap0==0xffff) ||
        ((format0_found==1)&&(format_c_found==1)))
      return(dci_cnt);

3218
    // Now check common search spaces at aggregation 8 (SI_RNTI,P_RNTI and RA_RNTI format 1A),
3219 3220 3221 3222 3223
    // and UE_SPEC format0 (PUSCH) too while we're at it
    //  printf("[DCI search] doing common search/format0 aggregation 3\n");
#ifdef DEBUG_DCI_DECODING
    printf("[DCI search] doing common search/format0 aggregation 8\n");
#endif
3224
    dci_decoding_procedure0(pdcch_vars,1,mode,subframe,
3225 3226 3227 3228
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3229
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3230
			    P_RNTI,
3231 3232 3233 3234
                            ra_rnti,
                            3,
                            format1A,
                            format1A,
3235
                            format1A,
3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247
                            format0,
                            format1A_size_bits,
                            format1A_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);

    if ((CCEmap0==0xffff)||
        ((format0_found==1)&&(format_c_found==1)))
3248
      return(dci_cnt);
3249

3250 3251
    // Now check common search spaces at aggregation 8 (SI_RNTI and RA_RNTI and C-RNTI format 1C),
    // and UE_SPEC format0 (PUSCH) too while we're at it
3252
    dci_decoding_procedure0(pdcch_vars,1,mode,subframe,
3253 3254 3255 3256
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3257
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3258
                            ra_rnti,
3259 3260 3261
			    P_RNTI,
			    3,
                            format1C,
3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272
                            format1C,
                            format1C,
                            format1C,
                            format1C_size_bits,
                            format1C_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);
3273 3274 3275 3276
    //#endif

  }

3277
  if (ue->UE_mode[eNB_id] <= PRACH)
3278 3279
    return(dci_cnt);

3280 3281
  if (ue->prach_resources[eNB_id])
    ra_rnti = ue->prach_resources[eNB_id]->ra_RNTI;
3282

3283
  // Now check UE_SPEC format0/1A ue_spec search spaces at aggregation 8
3284
  //  printf("[DCI search] Format 0/1A aggregation 8\n");
3285
  dci_decoding_procedure0(pdcch_vars,0,mode,
3286 3287 3288 3289 3290
                          subframe,
                          dci_alloc,
                          eNB_id,
                          frame_parms,
                          mi,
3291
                          ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3292
                          ra_rnti,
3293
			  P_RNTI,
3294
			  0,
3295
                          format1A,
3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308
                          format1A,
                          format1A,
                          format0,
                          format0_size_bits,
                          format0_size_bytes,
                          &dci_cnt,
                          &format0_found,
                          &format_c_found,
                          &CCEmap0,
                          &CCEmap1,
                          &CCEmap2);

  if ((CCEmap0==0xffff)||
3309 3310
      ((format0_found==1)&&(format_c_found==1)))
    return(dci_cnt);
3311

3312
  //  printf("[DCI search] Format 0 aggregation 4\n");
3313
  // Now check UE_SPEC format 0 search spaces at aggregation 4
3314
  dci_decoding_procedure0(pdcch_vars,0,mode,
3315 3316 3317 3318 3319
                          subframe,
                          dci_alloc,
                          eNB_id,
                          frame_parms,
                          mi,
3320
                          ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3321
                          ra_rnti,
3322
			  P_RNTI,
3323
			  1,
3324
                          format1A,
3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337
                          format1A,
                          format1A,
                          format0,
                          format0_size_bits,
                          format0_size_bytes,
                          &dci_cnt,
                          &format0_found,
                          &format_c_found,
                          &CCEmap0,
                          &CCEmap1,
                          &CCEmap2);

  if ((CCEmap0==0xffff)||
3338 3339 3340
      ((format0_found==1)&&(format_c_found==1)))
    return(dci_cnt);

3341
  if ((CCEmap0==0xffff)||
3342 3343
      ((format0_found==1)&&(format_c_found==1)))
    return(dci_cnt);
3344

3345
  //  printf("[DCI search] Format 0 aggregation 2\n");
3346
  // Now check UE_SPEC format 0 search spaces at aggregation 2
3347
  dci_decoding_procedure0(pdcch_vars,0,mode,
3348 3349 3350 3351 3352
                          subframe,
                          dci_alloc,
                          eNB_id,
                          frame_parms,
                          mi,
3353
                          ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3354
                          ra_rnti,
3355
			  P_RNTI,
3356
                          2,
3357 3358
                          format1A,
                          format1A,
3359
                          format1A,
3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370
                          format0,
                          format0_size_bits,
                          format0_size_bytes,
                          &dci_cnt,
                          &format0_found,
                          &format_c_found,
                          &CCEmap0,
                          &CCEmap1,
                          &CCEmap2);

  if ((CCEmap0==0xffff)||
3371 3372 3373 3374
      ((format0_found==1)&&(format_c_found==1)))
    return(dci_cnt);

  //  printf("[DCI search] Format 0 aggregation 4\n");
3375
  // Now check UE_SPEC format 0 search spaces at aggregation 1
3376
  dci_decoding_procedure0(pdcch_vars,0,mode,
3377 3378 3379 3380 3381
                          subframe,
                          dci_alloc,
                          eNB_id,
                          frame_parms,
                          mi,
3382
                          ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3383
                          ra_rnti,
3384
			  P_RNTI,
3385
                          3,
3386 3387
                          format1A,
                          format1A,
3388
                          format1A,
3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399
                          format0,
                          format0_size_bits,
                          format0_size_bytes,
                          &dci_cnt,
                          &format0_found,
                          &format_c_found,
                          &CCEmap0,
                          &CCEmap1,
                          &CCEmap2);

  if ((CCEmap0==0xffff)||
3400 3401 3402 3403 3404 3405 3406
      ((format0_found==1)&&(format_c_found==1)))
    return(dci_cnt);




  // These are for CRNTI based on transmission mode
Xiwen JIANG's avatar
Xiwen JIANG committed
3407
  if ((tmode < 3) || (tmode == 7)) {
3408
    // Now check UE_SPEC format 1 search spaces at aggregation 1
3409
    old_dci_cnt=dci_cnt;
3410
    dci_decoding_procedure0(pdcch_vars,0,mode,subframe,
3411 3412 3413 3414
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3415
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3416
                            ra_rnti,
3417
			    P_RNTI,
3418 3419 3420
                            0,
                            format1A,
                            format1A,
3421
                            format1A,
3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433
                            format1,
                            format1_size_bits,
                            format1_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);

    if ((CCEmap0==0xffff) ||
        (format_c_found==1))
3434
      return(dci_cnt);
3435

3436 3437
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);
3438 3439

    // Now check UE_SPEC format 1 search spaces at aggregation 2
3440
    old_dci_cnt=dci_cnt;
3441
    dci_decoding_procedure0(pdcch_vars,0,mode,subframe,
3442 3443 3444 3445
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3446
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3447
                            ra_rnti,
3448
			    P_RNTI,
3449 3450 3451
                            1,
                            format1A,
                            format1A,
3452
                            format1A,
3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465
                            format1,
                            format1_size_bits,
                            format1_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);


    if ((CCEmap0==0xffff)||
        (format_c_found==1))
3466
      return(dci_cnt);
3467

3468
    if (dci_cnt>old_dci_cnt)
3469
      return(dci_cnt);
3470

3471
    // Now check UE_SPEC format 1 search spaces at aggregation 4
3472
    old_dci_cnt=dci_cnt;
3473
    dci_decoding_procedure0(pdcch_vars,0,mode,subframe,
3474 3475 3476 3477
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3478
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3479
                            ra_rnti,
3480 3481 3482
			    P_RNTI,
			    2,
                            format1A,
3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496
                            format1A,
                            format1A,
                            format1,
                            format1_size_bits,
                            format1_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);

    if ((CCEmap0==0xffff)||
        ((format0_found==1)&&(format_c_found==1)))
3497
      return(dci_cnt);
3498

3499 3500 3501 3502 3503 3504
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

    //#ifdef ALL_AGGREGATION
    // Now check UE_SPEC format 1 search spaces at aggregation 8
    old_dci_cnt=dci_cnt;
3505
    dci_decoding_procedure0(pdcch_vars,0,mode,subframe,
3506 3507 3508 3509
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3510
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3511
                            ra_rnti,
3512
			    P_RNTI,
3513 3514 3515
                            3,
                            format1A,
                            format1A,
3516
                            format1A,
3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528
                            format1,
                            format1_size_bits,
                            format1_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);

    if ((CCEmap0==0xffff)||
        ((format0_found==1)&&(format_c_found==1)))
3529
      return(dci_cnt);
3530

3531 3532
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);
3533 3534 3535

    //#endif //ALL_AGGREGATION
  } else if (tmode == 3) {
3536 3537


hbilel's avatar
hbilel committed
3538
    LOG_D(PHY," Now check UE_SPEC format 2A_2A search aggregation 1 dci length: %d[bits] %d[bytes]\n",format2A_size_bits,format2A_size_bytes);
3539
    // Now check UE_SPEC format 2A_2A search spaces at aggregation 1
hbilel's avatar
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3540
    old_dci_cnt=dci_cnt;
3541
    dci_decoding_procedure0(pdcch_vars,0,mode,
3542 3543 3544 3545 3546
                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3547
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3548
                            ra_rnti,
hbilel's avatar
hbilel committed
3549
                            P_RNTI,
3550 3551 3552
                            0,
                            format1A,
                            format1A,
3553
                            format1A,
3554 3555 3556 3557 3558 3559 3560 3561 3562 3563
                            format2A,
                            format2A_size_bits,
                            format2A_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);

hbilel's avatar
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3564
    LOG_D(PHY," format 2A_2A search CCEmap0 %x, format0_found %d, format_c_found %d \n", CCEmap0, format0_found, format_c_found);
3565 3566
    if ((CCEmap0==0xffff)||
        ((format0_found==1)&&(format_c_found==1)))
3567
      return(dci_cnt);
3568

hbilel's avatar
hbilel committed
3569
    LOG_D(PHY," format 2A_2A search dci_cnt %d, old_dci_cn t%d \n", dci_cnt, old_dci_cnt);
3570 3571 3572
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

3573
    // Now check UE_SPEC format 2 search spaces at aggregation 2
hbilel's avatar
hbilel committed
3574
    LOG_D(PHY," Now check UE_SPEC format 2A_2A search aggregation 2 dci length: %d[bits] %d[bytes]\n",format2A_size_bits,format2A_size_bytes);
hbilel's avatar
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3575
    old_dci_cnt=dci_cnt;
3576
    dci_decoding_procedure0(pdcch_vars,0,mode,
3577 3578 3579 3580 3581
                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3582
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3583
                            ra_rnti,
3584
			    P_RNTI,
3585 3586 3587
                            1,
                            format1A,
                            format1A,
3588
                            format1A,
3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600
                            format2A,
                            format2A_size_bits,
                            format2A_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);

    if ((CCEmap0==0xffff)||
        ((format0_found==1)&&(format_c_found==1)))
3601
      return(dci_cnt);
3602

hbilel's avatar
hbilel committed
3603
    LOG_D(PHY," format 2A_2A search dci_cnt %d, old_dci_cn t%d \n", dci_cnt, old_dci_cnt);
3604 3605 3606
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

3607
    // Now check UE_SPEC format 2_2A search spaces at aggregation 4
hbilel's avatar
hbilel committed
3608 3609
    LOG_D(PHY," Now check UE_SPEC format 2_2A search spaces at aggregation 4 \n");
    old_dci_cnt=dci_cnt;
3610
    dci_decoding_procedure0(pdcch_vars,0,mode,
3611 3612 3613 3614 3615
                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3616
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3617
                            ra_rnti,
hbilel's avatar
hbilel committed
3618
                            P_RNTI,
3619 3620 3621
                            2,
                            format1A,
                            format1A,
3622
                            format1A,
3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634
                            format2A,
                            format2A_size_bits,
                            format2A_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);

    if ((CCEmap0==0xffff)||
        ((format0_found==1)&&(format_c_found==1)))
3635
      return(dci_cnt);
3636

hbilel's avatar
hbilel committed
3637
    LOG_D(PHY," format 2A_2A search dci_cnt %d, old_dci_cn t%d \n", dci_cnt, old_dci_cnt);
3638 3639 3640 3641
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

    //#ifdef ALL_AGGREGATION
3642
    // Now check UE_SPEC format 2_2A search spaces at aggregation 8
hbilel's avatar
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3643
    LOG_D(PHY," Now check UE_SPEC format 2_2A search spaces at aggregation 8 dci length: %d[bits] %d[bytes]\n",format2A_size_bits,format2A_size_bytes);
hbilel's avatar
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3644
    old_dci_cnt=dci_cnt;
3645
    dci_decoding_procedure0(pdcch_vars,0,mode,
3646 3647 3648 3649 3650
                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3651
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3652
                            ra_rnti,
3653
			    P_RNTI,
3654 3655 3656
                            3,
                            format1A,
                            format1A,
3657
                            format1A,
3658 3659 3660 3661 3662 3663 3664 3665 3666
                            format2A,
                            format2A_size_bits,
                            format2A_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);
3667
    //#endif
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hbilel committed
3668 3669 3670 3671 3672 3673 3674
    if ((CCEmap0==0xffff)||
        ((format0_found==1)&&(format_c_found==1)))
      return(dci_cnt);

    LOG_D(PHY," format 2A_2A search dci_cnt %d, old_dci_cn t%d \n", dci_cnt, old_dci_cnt);
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);
3675
  } else if (tmode == 4) {
3676

3677
    // Now check UE_SPEC format 2_2A search spaces at aggregation 1
hbilel's avatar
hbilel committed
3678
    old_dci_cnt=dci_cnt;
3679
    dci_decoding_procedure0(pdcch_vars,0,mode,
3680 3681 3682 3683 3684
                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3685
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3686
                            ra_rnti,
3687
			    P_RNTI,
3688 3689 3690
                            0,
                            format1A,
                            format1A,
3691
                            format1A,
3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703
                            format2,
                            format2_size_bits,
                            format2_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);

    if ((CCEmap0==0xffff)||
        ((format0_found==1)&&(format_c_found==1)))
3704
      return(dci_cnt);
3705

3706 3707 3708
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

3709
    // Now check UE_SPEC format 2 search spaces at aggregation 2
hbilel's avatar
hbilel committed
3710
    old_dci_cnt=dci_cnt;
3711
    dci_decoding_procedure0(pdcch_vars,0,mode,
3712 3713 3714 3715 3716
                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3717
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3718
                            ra_rnti,
3719
			    P_RNTI,
3720 3721 3722
                            1,
                            format1A,
                            format1A,
3723
                            format1A,
3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735
                            format2,
                            format2_size_bits,
                            format2_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);

    if ((CCEmap0==0xffff)||
        ((format0_found==1)&&(format_c_found==1)))
3736
      return(dci_cnt);
3737

3738 3739 3740
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

3741
    // Now check UE_SPEC format 2_2A search spaces at aggregation 4
hbilel's avatar
hbilel committed
3742
    old_dci_cnt=dci_cnt;
3743
    dci_decoding_procedure0(pdcch_vars,0,mode,
3744 3745 3746 3747 3748
                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3749
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3750
                            ra_rnti,
3751
			    P_RNTI,
3752 3753 3754
                            2,
                            format1A,
                            format1A,
3755
                            format1A,
3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767
                            format2,
                            format2_size_bits,
                            format2_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);

    if ((CCEmap0==0xffff)||
        ((format0_found==1)&&(format_c_found==1)))
3768
      return(dci_cnt);
3769

3770 3771 3772 3773
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

    //#ifdef ALL_AGGREGATION
3774
    // Now check UE_SPEC format 2_2A search spaces at aggregation 8
hbilel's avatar
hbilel committed
3775
    old_dci_cnt=dci_cnt;
3776
    dci_decoding_procedure0(pdcch_vars,0,mode,
3777 3778 3779 3780 3781
                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3782
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3783
                            ra_rnti,
3784
			    P_RNTI,
3785 3786 3787
                            3,
                            format1A,
                            format1A,
3788
                            format1A,
3789 3790 3791 3792 3793 3794 3795 3796 3797
                            format2,
                            format2_size_bits,
                            format2_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);
3798
    //#endif
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Xiwen JIANG committed
3799
  } else if ((tmode==5) || (tmode==6)) { // This is MU-MIMO
3800

3801
    // Now check UE_SPEC format 1E_2A_M10PRB search spaces aggregation 1
3802
#ifdef DEBUG_DCI_DECODING
3803
    LOG_I(PHY," MU-MIMO check UE_SPEC format 1E_2A_M10PRB\n");
3804
#endif
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hbilel committed
3805
    old_dci_cnt=dci_cnt;
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    dci_decoding_procedure0(pdcch_vars,0,mode,
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                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
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                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
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                            ra_rnti,
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			    P_RNTI,
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                            0,
                            format1A,
                            format1A,
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                            format1A,
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                            format1E_2A_M10PRB,
                            sizeof_DCI1E_5MHz_2A_M10PRB_TDD_t,
                            sizeof(DCI1E_5MHz_2A_M10PRB_TDD_t),
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);


    if ((CCEmap0==0xffff)||
        ((format0_found==1)&&(format_c_found==1)))
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      return(dci_cnt);
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    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);
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    // Now check UE_SPEC format 1E_2A_M10PRB search spaces aggregation 2
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3838
    old_dci_cnt=dci_cnt;
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    dci_decoding_procedure0(pdcch_vars,0,mode,
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                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
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                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
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                            ra_rnti,
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			    P_RNTI,
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                            1,
                            format1A,
                            format1A,
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                            format1A,
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                            format1E_2A_M10PRB,
                            sizeof_DCI1E_5MHz_2A_M10PRB_TDD_t,
                            sizeof(DCI1E_5MHz_2A_M10PRB_TDD_t),
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);

    if ((CCEmap0==0xffff)||
        ((format0_found==1)&&(format_c_found==1)))
      return(dci_cnt);
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    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);
3868

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    // Now check UE_SPEC format 1E_2A_M10PRB search spaces aggregation 4
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    old_dci_cnt=dci_cnt;
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    dci_decoding_procedure0(pdcch_vars,0,mode,
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                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
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                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
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                            ra_rnti,
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			    P_RNTI,
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                            2,
                            format1A,
                            format1A,
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                            format1A,
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                            format1E_2A_M10PRB,
                            sizeof_DCI1E_5MHz_2A_M10PRB_TDD_t,
                            sizeof(DCI1E_5MHz_2A_M10PRB_TDD_t),
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);

    if ((CCEmap0==0xffff)||
        ((format0_found==1)&&(format_c_found==1)))
      return(dci_cnt);
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    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);
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    //#ifdef ALL_AGGREGATION

    // Now check UE_SPEC format 1E_2A_M10PRB search spaces at aggregation 8
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3904
    old_dci_cnt=dci_cnt;
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    dci_decoding_procedure0(pdcch_vars,0,mode,
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                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
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                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
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                            ra_rnti,
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			    P_RNTI,
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                            3,
                            format1A,
                            format1A,
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                            format1A,
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                            format1E_2A_M10PRB,
                            sizeof_DCI1E_5MHz_2A_M10PRB_TDD_t,
                            sizeof(DCI1E_5MHz_2A_M10PRB_TDD_t),
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);

    if ((CCEmap0==0xffff)||
        ((format0_found==1)&&(format_c_found==1)))
      return(dci_cnt);

    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

    //#endif  //ALL_AGGREGATION

  }
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  return(dci_cnt);
}

#ifdef PHY_ABSTRACTION
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uint16_t dci_decoding_procedure_emul(LTE_UE_PDCCH **pdcch_vars,
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                                     uint8_t num_ue_spec_dci,
                                     uint8_t num_common_dci,
                                     DCI_ALLOC_t *dci_alloc_tx,
                                     DCI_ALLOC_t *dci_alloc_rx,
                                     int16_t eNB_id)
{

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  uint8_t  dci_cnt=0,i;
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  memcpy(dci_alloc_rx,dci_alloc_tx,num_common_dci*sizeof(DCI_ALLOC_t));
  dci_cnt = num_common_dci;
  LOG_D(PHY,"[DCI][EMUL] : num_common_dci %d\n",num_common_dci);

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  for (i=num_common_dci; i<(num_ue_spec_dci+num_common_dci); i++) {
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    LOG_D(PHY,"[DCI][EMUL] Checking dci %d => %x format %d (bit 0 %d)\n",i,pdcch_vars[eNB_id]->crnti,dci_alloc_tx[i].format,
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          dci_alloc_tx[i].dci_pdu[0]&0x80);

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    if (dci_alloc_tx[i].rnti == pdcch_vars[eNB_id]->crnti) {
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      memcpy(dci_alloc_rx+dci_cnt,dci_alloc_tx+i,sizeof(DCI_ALLOC_t));
      dci_cnt++;
    }
  }


  return(dci_cnt);
}
#endif