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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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#include "UTIL/LOG/log.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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  AssertFatal((aggregation_level==1) || 
	      (aggregation_level==2) || 
	      (aggregation_level==4) || 
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	      (aggregation_level==8) 
#ifdef Rel14 // Added for EPDCCH/MPDCCH
	      ||
	      (aggregation_level==16) ||
	      (aggregation_level==24) ||
	      (aggregation_level==32)
#endif
	      ,
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	      "generate_dci FATAL, illegal aggregation_level %d\n",aggregation_level);
  
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  coded_bits = 72 * 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);

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  AssertFatal(z!=NULL,"dci.c: pdcch_deinterleaving: FATAL z is Null\n");
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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][0];
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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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836
    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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856
#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
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    for (i=0; i<frame_parms->N_RB_DL*3; i++) {
864
#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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938

939
    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();
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#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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  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;
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  LTE_UE_PDCCH **pdcch_vars       = ue->pdcch_vars[ue->current_thread_id[subframe]];
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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;
  uint8_t n_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);
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  // procress ofdm symbol 0
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    if (is_secondary_ue == 1) {
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      pdcch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
                               common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id+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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                               0,
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                               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[ue->current_thread_id[subframe]].rxdataF,
                               common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id_i - 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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                               0,
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                               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[ue->current_thread_id[subframe]].rxdataF,
                             common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id],
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                             pdcch_vars[eNB_id]->rxdataF_ext,
                             pdcch_vars[eNB_id]->dl_ch_estimates_ext,
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                             0,
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                             high_speed_flag,
                             frame_parms);
    } else {
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      pdcch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
                               common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id],
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                               pdcch_vars[eNB_id]->rxdataF_ext,
                               pdcch_vars[eNB_id]->dl_ch_estimates_ext,
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                               0,
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                               high_speed_flag,
                               frame_parms);
    }

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  // compute channel level based on ofdm symbol 0
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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;
1758

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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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      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 UE_DEBUG_TRACE
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  LOG_D(PHY,"subframe %d: pdcch log2_maxh = %d (%d,%d)\n",subframe,log2_maxh,avgP[0],avgs);
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#endif
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  T(T_UE_PHY_PDCCH_ENERGY, T_INT(eNB_id),  T_INT(frame%1024), T_INT(subframe),
                           T_INT(avgP[0]), T_INT(avgP[1]),    T_INT(avgP[2]),  T_INT(avgP[3]));
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  // compute LLRs for ofdm symbol 0 only
  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,
                  frame_parms,
                  0,
                  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) {
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      //get MF output for interfering stream
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      pdcch_channel_compensation(pdcch_vars[eNB_id_i]->rxdataF_ext,
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              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,
                      frame_parms,
                      0,
                      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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              0,
              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,
              log2_maxh);
  }
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#endif //MU_RECEIVER
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  if (frame_parms->nb_antennas_rx > 1) {
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#ifdef MU_RECEIVER
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      if (is_secondary_ue) {
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          pdcch_detection_mrc_i(frame_parms,
                  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,
                  0);
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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,
                  pdcch_vars[eNB_id]->rxdataF_comp,
                  0);
  }
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  if (mimo_mode == SISO)
      pdcch_siso(frame_parms,pdcch_vars[eNB_id]->rxdataF_comp,0);
  else
      pdcch_alamouti(frame_parms,pdcch_vars[eNB_id]->rxdataF_comp,0);
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#ifdef MU_RECEIVER
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  if (is_secondary_ue) {
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      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,
              0);
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      /*
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      #ifdef DEBUG_PHY
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1852
      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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      #endif*/
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  } 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,
              0);
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      /*#ifdef DEBUG_PHY
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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);
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      #endif*/
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#ifdef MU_RECEIVER
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  }
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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 and find out pdcch ofdm symbol number
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  n_pdcch_symbols = rx_pcfich(frame_parms,
1881
                              subframe,
1882
                              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

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  LOG_I(PHY,"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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  // process pdcch ofdm symbol 1 and 2 if necessary
  for (int s=1; 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[ue->current_thread_id[subframe]].rxdataF,
                  common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].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,
                  s,
                  high_speed_flag,
                  frame_parms);
#ifdef MU_RECEIVER
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pdcch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
        common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id_i - 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
        s,
        high_speed_flag,
        frame_parms);
#endif //MU_RECEIVER
      } 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[ue->current_thread_id[subframe]].rxdataF,
                  common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id],
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                  pdcch_vars[eNB_id]->rxdataF_ext,
                  pdcch_vars[eNB_id]->dl_ch_estimates_ext,
                  s,
                  high_speed_flag,
                  frame_parms);
      } else {
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          pdcch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
                  common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id],
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                  pdcch_vars[eNB_id]->rxdataF_ext,
                  pdcch_vars[eNB_id]->dl_ch_estimates_ext,
                  s,
                  high_speed_flag,
                  frame_parms);
      }


      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,
                      frame_parms,
                      s,
                      log2_maxh); // log2_maxh+I0_shift


#ifdef DEBUG_PHY

if (subframe==5)
    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);

#endif

#ifdef MU_RECEIVER

if (is_secondary_ue) {
    //get MF output for interfering stream
    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,
                    frame_parms,
                    s,
                    log2_maxh); // log2_maxh+I0_shift
#ifdef DEBUG_PHY
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);
#endif
pdcch_dual_stream_correlation(frame_parms,
        s,
        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,
        log2_maxh);
}

#endif //MU_RECEIVER


if (frame_parms->nb_antennas_rx > 1) {
#ifdef MU_RECEIVER

    if (is_secondary_ue) {
        pdcch_detection_mrc_i(frame_parms,
                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,
                s);
#ifdef DEBUG_PHY
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);
#endif
    } else
#endif //MU_RECEIVER
        pdcch_detection_mrc(frame_parms,
                pdcch_vars[eNB_id]->rxdataF_comp,
                s);

}

if (mimo_mode == SISO)
    pdcch_siso(frame_parms,pdcch_vars[eNB_id]->rxdataF_comp,s);
else
    pdcch_alamouti(frame_parms,pdcch_vars[eNB_id]->rxdataF_comp,s);


#ifdef MU_RECEIVER

if (is_secondary_ue) {
    pdcch_qpsk_qpsk_llr(frame_parms,
            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,
            s);
    /*
        #ifdef DEBUG_PHY
        if (subframe==5) {
        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);
        }
        #endif*/
} else {
#endif //MU_RECEIVER
    pdcch_llr(frame_parms,
            pdcch_vars[eNB_id]->rxdataF_comp,
            (char *)pdcch_vars[eNB_id]->llr,
            s);
    /*#ifdef DEBUG_PHY
        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);
        #endif*/

#ifdef MU_RECEIVER
}

#endif //MU_RECEIVER

  }

2036 2037
  pdcch_demapping(pdcch_vars[eNB_id]->llr,
                  pdcch_vars[eNB_id]->wbar,
2038 2039 2040
                  frame_parms,
                  n_pdcch_symbols,
                  get_mi(frame_parms,subframe));
2041 2042

  pdcch_deinterleaving(frame_parms,
2043 2044
                       (uint16_t*)pdcch_vars[eNB_id]->e_rx,
                       pdcch_vars[eNB_id]->wbar,
2045 2046 2047
                       n_pdcch_symbols,
                       mi);

2048
  pdcch_unscrambling(frame_parms,
2049
                     subframe,
2050
                     pdcch_vars[eNB_id]->e_rx,
2051 2052
                     get_nCCE(n_pdcch_symbols,frame_parms,mi)*72);

2053
  pdcch_vars[eNB_id]->num_pdcch_symbols = n_pdcch_symbols;
2054 2055 2056 2057 2058 2059

  return(0);
}


void pdcch_scrambling(LTE_DL_FRAME_PARMS *frame_parms,
2060 2061 2062 2063
                      uint8_t subframe,
                      uint8_t *e,
                      uint32_t length)
{
2064
  int i;
2065 2066
  uint8_t reset;
  uint32_t x1, x2, s=0;
2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078

  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;
    }
2079

2080 2081 2082 2083 2084 2085 2086
    //    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,
2087 2088 2089 2090
                        uint8_t subframe,
                        int8_t* llr,
                        uint32_t length)
{
2091 2092

  int i;
2093 2094
  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++) {
2102
    if ((i&0x1f)==0) {
2103
      s = lte_gold_generic(&x1, &x2, reset);
2104
      //      printf("lte_gold[%d]=%x\n",i,s);
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      reset = 0;
    }
2107

2108 2109
    
    //    printf("unscrambling %d : e %d, c %d => ",i,llr[i],((s>>(i&0x1f))&1));
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    if (((s>>(i%32))&1)==0)
      llr[i] = -llr[i];
2112
    //    printf("%d\n",llr[i]);
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  }
}
2116

2117
/*
2118
uint8_t get_num_pdcch_symbols(uint8_t num_dci,
2119 2120 2121 2122
                              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;
2130 2131 2132

  // 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
2143
  for (i=0; i<num_dci; i++) {
2144
    //     printf("dci %d => %d\n",i,dci_alloc[i].L);
2145
    numCCE += (1<<(dci_alloc[i].L));
2146 2147

    if(firstCCE_max < dci_alloc[i].firstCCE) {
2148 2149
      firstCCE_max = dci_alloc[i].firstCCE;
      L            = dci_alloc[i].L;
2150
    }
2151
  }
2152
  CCE_max_used_index = firstCCE_max + (1<<L) - 1;
2153 2154

  //if ((9*numCCE) <= (frame_parms->N_RB_DL*2))
2155
  if (CCE_max_used_index < get_nCCE(1, frame_parms, get_mi(frame_parms, subframe)))
2156
    return(cmax(1,nCCEmin));
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2157
  //else if ((9*numCCE) <= (frame_parms->N_RB_DL*((frame_parms->nb_antenna_ports_eNB==4) ? 4 : 5)))
2158
  else if (CCE_max_used_index < get_nCCE(2, frame_parms, get_mi(frame_parms, subframe)))
2159
    return(cmax(2,nCCEmin));
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2160
  //else if ((9*numCCE) <= (frame_parms->N_RB_DL*((frame_parms->nb_antenna_ports_eNB==4) ? 7 : 8)))
2161
  else if (CCE_max_used_index < get_nCCE(3, frame_parms, get_mi(frame_parms, subframe)))
2162
    return(cmax(3,nCCEmin));
2163
  else if (frame_parms->N_RB_DL<=10) {
2164
    if (frame_parms->Ncp == 0) { // normal CP
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2165
      printf("numCCE %d, N_RB_DL = %d : should be returning 4 PDCCH symbols (%d,%d,%d)\n",numCCE,frame_parms->N_RB_DL,
2166 2167 2168 2169
             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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      if ((9*numCCE) <= (frame_parms->N_RB_DL*((frame_parms->nb_antenna_ports_eNB==4) ? 10 : 11)))
2171 2172
        return(4);
    } else { // extended CP
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      if ((9*numCCE) <= (frame_parms->N_RB_DL*((frame_parms->nb_antenna_ports_eNB==4) ? 9 : 10)))
2174
        return(4);
2175 2176 2177
    }
  }

2178

2179

2180
  //  LOG_I(PHY," dci.c: get_num_pdcch_symbols subframe %d FATAL, illegal numCCE %d (num_dci %d)\n",subframe,numCCE,num_dci);
2181 2182
  //for (i=0;i<num_dci;i++) {
  //  printf("dci_alloc[%d].L = %d\n",i,dci_alloc[i].L);
2183
  //}
2184
  //exit(-1);
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2185
exit(1);
2186 2187
  return(0);
}
2188
*/
2189

2190

2191 2192
uint8_t generate_dci_top(uint8_t num_pdcch_symbols,
			 uint8_t num_dci,
2193 2194 2195 2196
                         DCI_ALLOC_t *dci_alloc,
                         uint32_t n_rnti,
                         int16_t amp,
                         LTE_DL_FRAME_PARMS *frame_parms,
2197
                         int32_t **txdataF,
2198 2199
                         uint32_t subframe)
{
2200

2201

2202
  uint8_t *e_ptr;
2203 2204 2205 2206 2207
  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);
2208
  static uint8_t e[DCI_BITS_MAX];
2209
  static int32_t yseq0[Msymb],yseq1[Msymb],wbar0[Msymb],wbar1[Msymb];
2210

2211 2212
  int32_t *y[2];
  int32_t *wbar[2];
2213

2214 2215 2216 2217 2218 2219 2220 2221 2222
  int nushiftmod3 = frame_parms->nushift%3;

  int Msymb2;
  int split_flag=0;

  switch (frame_parms->N_RB_DL) {
  case 100:
    Msymb2 = Msymb;
    break;
2223

2224 2225 2226
  case 75:
    Msymb2 = 3*Msymb/4;
    break;
2227

2228 2229 2230
  case 50:
    Msymb2 = Msymb>>1;
    break;
2231

2232 2233 2234
  case 25:
    Msymb2 = Msymb>>2;
    break;
2235

2236 2237 2238
  case 15:
    Msymb2 = Msymb*15/100;
    break;
2239

2240 2241 2242
  case 6:
    Msymb2 = Msymb*6/100;
    break;
2243

2244 2245 2246 2247 2248
  default:
    Msymb2 = Msymb>>2;
    break;
  }

2249

2250
  generate_pcfich(num_pdcch_symbols,
2251 2252 2253 2254
                  amp,
                  frame_parms,
                  txdataF,
                  subframe);
2255 2256 2257 2258 2259 2260
  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
2261 2262 2263 2264
  // 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;
2265

2266 2267
  e_ptr = e;

2268

2269 2270
  // 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
2271
  for (L=8; L>=1; L>>=1) {
2272
    for (i=0; i<num_dci; i++) {
2273

2274
      if (dci_alloc[i].L == (uint8_t)L) {
2275

2276
	#ifdef DEBUG_DCI_ENCODING
2277 2278
	if (dci_alloc[i].rnti==0x02)
	  LOG_I(PHY,"Generating DCI %d/%d (nCCE %d) of length %d, aggregation %d (%x), rnti %x\n",i,num_dci,dci_alloc[i].firstCCE,dci_alloc[i].dci_length,dci_alloc[i].L,
2279 2280
		*(unsigned int*)dci_alloc[i].dci_pdu,
		dci_alloc[i].rnti);
2281 2282
       //dump_dci(frame_parms,&dci_alloc[i]);
	#endif
2283

2284
        if (dci_alloc[i].firstCCE>=0) {
2285
          e_ptr = generate_dci0(dci_alloc[i].dci_pdu,
2286
                                e+(72*dci_alloc[i].firstCCE),
2287 2288 2289 2290
                                dci_alloc[i].dci_length,
                                dci_alloc[i].L,
                                dci_alloc[i].rnti);
        }
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      }
    }
  }

  // Scrambling
  //  printf("pdcch scrambling\n");
  pdcch_scrambling(frame_parms,
2298 2299
                   subframe,
                   e,
2300
                   8*get_nquad(num_pdcch_symbols, frame_parms, mi));
2301 2302
  //72*get_nCCE(num_pdcch_symbols,frame_parms,mi));

2303

2304

2305

2306
  // Now do modulation
2307
  if (frame_parms->nb_antenna_ports_eNB==1)
2308
    gain_lin_QPSK = (int16_t)((amp*ONE_OVER_SQRT2_Q15)>>15);
2309
  else
2310
    gain_lin_QPSK = amp/2;
2311 2312

  e_ptr = e;
2313

2314 2315 2316 2317 2318
#ifdef DEBUG_DCI_ENCODING
  printf(" PDCCH Modulation, Msymb %d, Msymb2 %d,gain_lin_QPSK %d\n",Msymb,Msymb2,gain_lin_QPSK);
#endif


2319
  if (frame_parms->nb_antenna_ports_eNB==1) { //SISO
2320

2321

2322
    for (i=0; i<Msymb2; i++) {
2323
      
2324 2325 2326 2327
      //((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;
2328
      e_ptr++;
2329 2330 2331 2332
      //((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;
2333 2334 2335

      e_ptr++;
    }
2336
  } else { //ALAMOUTI
2337

2338

2339
    for (i=0; i<Msymb2; i+=2) {
2340 2341

#ifdef DEBUG_DCI_ENCODING
2342
      printf(" PDCCH Modulation (TX diversity): REG %d\n",i>>2);
2343
#endif
2344
      // first antenna position n -> x0
2345
      ((int16_t*)&y[0][i])[0] = (*e_ptr==2) ? 0 : (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
2346
      e_ptr++;
2347
      ((int16_t*)&y[0][i])[1] = (*e_ptr==2) ? 0 : (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
2348
      e_ptr++;
2349

2350
      // second antenna position n -> -x1*
2351
      ((int16_t*)&y[1][i])[0] = (*e_ptr==2) ? 0 : (*e_ptr == 1) ? gain_lin_QPSK : -gain_lin_QPSK;
2352
      e_ptr++;
2353
      ((int16_t*)&y[1][i])[1] = (*e_ptr==2) ? 0 : (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
2354 2355 2356 2357 2358 2359 2360 2361 2362
      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];

    }
2363 2364 2365 2366
  }


#ifdef DEBUG_DCI_ENCODING
2367
  printf(" PDCCH Interleaving\n");
2368 2369
#endif

2370
  //  printf("y %p (%p,%p), wbar %p (%p,%p)\n",y,y[0],y[1],wbar,wbar[0],wbar[1]);
2371 2372 2373 2374 2375 2376 2377 2378
  // 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
2379
  //  printf("DCI (SF %d) : txdataF %p (0 %p)\n",subframe,&txdataF[0][512*14*subframe],&txdataF[0][0]);
2380 2381
  for (kprime=0; kprime<frame_parms->N_RB_DL*12; kprime++) {
    for (lprime=0; lprime<num_pdcch_symbols; lprime++) {
2382

2383
      symbol_offset = (uint32_t)frame_parms->ofdm_symbol_size*(lprime+(subframe*nsymb));
2384 2385


2386

2387 2388 2389 2390 2391 2392 2393 2394
      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
2395
        printf("generate_dci: skipping REG %d (kprime %d, lprime %d)\n",(lprime==0)?(kprime/6) : (kprime>>2),kprime,lprime);
2396
#endif
2397 2398 2399 2400
      } else {
        // Copy REG to TX buffer

        if ((lprime == 0)||
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            ((lprime==1)&&(frame_parms->nb_antenna_ports_eNB == 4))) {
2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412
          // 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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                if (frame_parms->nb_antenna_ports_eNB > 1)
2414 2415
                  txdataF[1][tti_offset+i] = wbar[1][mprime];

2416
#ifdef DEBUG_DCI_ENCODING
2417
                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]));
2418
#endif
2419

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                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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                if (frame_parms->nb_antenna_ports_eNB > 1)
2434 2435
                  txdataF[1][tti_offset+i] = wbar[1][mprime];

2436
#ifdef DEBUG_DCI_ENCODING
2437
                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]));
2438
#endif
2439 2440 2441 2442 2443
                mprime++;
              }
            } else {
              txdataF[0][tti_offset+0] = wbar[0][mprime];

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2444
              if (frame_parms->nb_antenna_ports_eNB > 1)
2445 2446
                txdataF[1][tti_offset+0] = wbar[1][mprime];

2447
#ifdef DEBUG_DCI_ENCODING
2448
              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]));
2449
#endif
2450 2451 2452
              mprime++;
              txdataF[0][tti_offset+1] = wbar[0][mprime];

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2453
              if (frame_parms->nb_antenna_ports_eNB > 1)
2454 2455
                txdataF[1][tti_offset+1] = wbar[1][mprime];

2456
#ifdef DEBUG_DCI_ENCODING
2457
              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]));
2458
#endif
2459 2460 2461
              mprime++;
              txdataF[0][tti_offset-frame_parms->ofdm_symbol_size+3] = wbar[0][mprime];

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2462
              if (frame_parms->nb_antenna_ports_eNB > 1)
2463 2464
                txdataF[1][tti_offset-frame_parms->ofdm_symbol_size+3] = wbar[1][mprime];

2465
#ifdef DEBUG_DCI_ENCODING
2466
              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],
2467
                    *(1+(short*)&wbar[0][mprime]));
2468
#endif
2469 2470 2471
              mprime++;
              txdataF[0][tti_offset-frame_parms->ofdm_symbol_size+4] = wbar[0][mprime];

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2472
              if (frame_parms->nb_antenna_ports_eNB > 1)
2473 2474
                txdataF[1][tti_offset-frame_parms->ofdm_symbol_size+4] = wbar[1][mprime];

2475
#ifdef DEBUG_DCI_ENCODING
2476
              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],
2477
                    *(1+(short*)&wbar[0][mprime]));
2478
#endif
2479 2480 2481 2482 2483
              mprime++;

            }
          }
        }
2484

2485 2486
        if (mprime>=Msymb2)
          return(num_pdcch_symbols);
2487
      } // check_phich_reg
2488

2489
    } //lprime loop
2490

2491
    re_offset++;
2492

2493 2494 2495
    if (re_offset == (frame_parms->ofdm_symbol_size))
      re_offset = 1;
  } // kprime loop
2496

2497 2498 2499 2500 2501
  return(num_pdcch_symbols);
}



2502
void dci_decoding(uint8_t DCI_LENGTH,
2503 2504 2505 2506
                  uint8_t aggregation_level,
                  int8_t *e,
                  uint8_t *decoded_output)
{
2507 2508 2509 2510

  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))];

2511
  uint16_t RCC;
2512

2513 2514
  uint16_t D=(DCI_LENGTH+16+64);
  uint16_t coded_bits;
2515
#ifdef DEBUG_DCI_DECODING
2516
  int32_t i;
2517
#endif
2518

2519 2520
  AssertFatal(aggregation_level<4,
	      "dci_decoding FATAL, illegal aggregation_level %d\n",aggregation_level);
2521 2522 2523 2524

  coded_bits = 72 * (1<<aggregation_level);

#ifdef DEBUG_DCI_DECODING
2525
  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);
2526
#endif
2527

2528 2529 2530
  // now do decoding
  memset((void*)dummy_w_rx,0,3*D);
  RCC = generate_dummy_w_cc(DCI_LENGTH+16,
2531 2532
                            dummy_w_rx);

2533 2534 2535


#ifdef DEBUG_DCI_DECODING
2536
  LOG_I(PHY," Doing DCI Rate Matching RCC %d, w %p\n",RCC,w);
2537 2538 2539
#endif

  lte_rate_matching_cc_rx(RCC,coded_bits,w_rx,dummy_w_rx,e);
2540 2541 2542 2543 2544

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

2545
#ifdef DEBUG_DCI_DECODING
2546 2547

  for (i=0; i<16+DCI_LENGTH; i++)
2548
    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)));
2549 2550

#endif
2551
  memset(decoded_output,0,2+((16+DCI_LENGTH)>>3));
2552

2553
#ifdef DEBUG_DCI_DECODING
2554
  printf("Before Viterbi\n");
2555

2556
  for (i=0; i<16+DCI_LENGTH; i++)
2557
    printf("%d : (%d,%d,%d)\n",i,*(d_rx+96+(3*i)),*(d_rx+97+(3*i)),*(d_rx+98+(3*i)));
2558 2559

#endif
2560
  //debug_printf("Doing DCI Viterbi \n");
2561
  phy_viterbi_lte_sse2(d_rx+96,decoded_output,16+DCI_LENGTH);
2562
  //debug_printf("Done DCI Viterbi \n");
2563 2564 2565
}


2566
static uint8_t dci_decoded_output[RX_NB_TH][(MAX_DCI_SIZE_BITS+64)/8];
2567

2568 2569
uint16_t get_nCCE(uint8_t num_pdcch_symbols,LTE_DL_FRAME_PARMS *frame_parms,uint8_t mi)
{
2570 2571 2572
  return(get_nquad(num_pdcch_symbols,frame_parms,mi)/9);
}

2573 2574
uint16_t get_nquad(uint8_t num_pdcch_symbols,LTE_DL_FRAME_PARMS *frame_parms,uint8_t mi)
{
2575

2576
  uint16_t Nreg=0;
2577
  uint8_t Ngroup_PHICH = (frame_parms->phich_config_common.phich_resource*frame_parms->N_RB_DL)/48;
2578 2579 2580 2581 2582 2583 2584

  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;
  }
2585

2586 2587 2588 2589 2590 2591 2592
  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;
2593

2594 2595 2596
    case 25:
      Nreg=50+(num_pdcch_symbols-1)*75;
      break;
2597

2598 2599 2600
    case 50:
      Nreg=100+(num_pdcch_symbols-1)*150;
      break;
2601

2602 2603 2604
    case 100:
      Nreg=200+(num_pdcch_symbols-1)*300;
      break;
2605

2606 2607 2608
    default:
      return(0);
    }
2609

2610 2611 2612 2613
  //   printf("Nreg %d (%d)\n",Nreg,Nreg - 4 - (3*Ngroup_PHICH));
  return(Nreg - 4 - (3*Ngroup_PHICH));
}

2614
uint16_t get_nCCE_mac(uint8_t Mod_id,uint8_t CC_id,int num_pdcch_symbols,int subframe)
2615
{
2616 2617

  // check for eNB only !
2618
  return(get_nCCE(num_pdcch_symbols,
2619 2620
		  &RC.eNB[Mod_id][CC_id]->frame_parms,
		  get_mi(&RC.eNB[Mod_id][CC_id]->frame_parms,subframe))); 
2621 2622
}

2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704

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++) {
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2705 2706
        int cce = (((Yk+m)%(nCCE/L))*L) + l;
        if (cce >= nCCE || CCE_table[cce] == 1) {
2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724
          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);
  }
}


2725
void dci_decoding_procedure0(LTE_UE_PDCCH **pdcch_vars,
2726
			     int do_common,
2727
			     dci_detect_mode_t mode,
2728
			     uint8_t subframe,
2729 2730
                             DCI_ALLOC_t *dci_alloc,
                             int16_t eNB_id,
2731
                             uint8_t current_thread_id,
2732 2733 2734 2735
                             LTE_DL_FRAME_PARMS *frame_parms,
                             uint8_t mi,
                             uint16_t si_rnti,
                             uint16_t ra_rnti,
2736
                             uint16_t p_rnti,
2737 2738
                             uint8_t L,
                             uint8_t format_si,
2739
                             uint8_t format_p,
2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751
                             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)
{

2752 2753
  uint16_t crc,CCEind,nCCE;
  uint32_t *CCEmap=NULL,CCEmap_mask=0;
2754
  int L2=(1<<L);
2755
  unsigned int Yk,nb_candidates = 0,i,m;
2756 2757
  unsigned int CCEmap_cand;

2758
  nCCE = get_nCCE(pdcch_vars[eNB_id]->num_pdcch_symbols,frame_parms,mi);
2759

2760 2761
  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));
2762
    return;
2763
  }
2764

2765 2766
  if (nCCE<L2) {
    LOG_D(PHY,"skip DCI decoding: nCCE=%d < L2=%d\n", nCCE, L2);
2767
    return;
2768
  }
2769

2770 2771 2772 2773 2774
  if (mode == NO_DCI) {
    LOG_D(PHY, "skip DCI decoding: expect no DCIs at subframe %d\n", subframe);
    return;
  }

2775 2776 2777
  if (do_common == 1) {
    nb_candidates = (L2==4) ? 4 : 2;
    Yk=0;
2778
  } else {
2779 2780 2781
    // Find first available in ue specific search space
    // according to procedure in Section 9.1.1 of 36.213 (v. 8.6)
    // compute Yk
2782
    Yk = (unsigned int)pdcch_vars[eNB_id]->crnti;
2783

2784
    for (i=0; i<=subframe; i++)
2785 2786 2787 2788 2789 2790 2791 2792 2793
      Yk = (Yk*39827)%65537;

    Yk = Yk % (nCCE/L2);

    switch (L2) {
    case 1:
    case 2:
      nb_candidates = 6;
      break;
2794

2795 2796 2797 2798
    case 4:
    case 8:
      nb_candidates = 2;
      break;
2799

2800 2801 2802
    default:
      DevParam(L2, do_common, eNB_id);
      break;
2803
    }
2804
  }
2805

2806 2807 2808 2809 2810 2811 2812
  /*  for (CCEind=0;
       CCEind<nCCE2;
       CCEind+=(1<<L)) {*/

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

2813
  for (m=0; m<nb_candidates; m++) {
2814 2815 2816 2817 2818 2819 2820 2821 2822 2823

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

    if (CCEind<32)
      CCEmap = CCEmap0;
    else if (CCEind<64)
      CCEmap = CCEmap1;
    else if (CCEind<96)
      CCEmap = CCEmap2;
    else {
2824 2825
      AssertFatal(1==0,
		  "Illegal CCEind %d (Yk %d, m %d, nCCE %d, L2 %d\n",CCEind,Yk,m,nCCE,L2);
2826
    }
2827

2828 2829 2830 2831
    switch (L2) {
    case 1:
      CCEmap_mask = (1<<(CCEind&0x1f));
      break;
2832

2833 2834 2835
    case 2:
      CCEmap_mask = (3<<(CCEind&0x1f));
      break;
2836

2837 2838 2839
    case 4:
      CCEmap_mask = (0xf<<(CCEind&0x1f));
      break;
2840

2841 2842 2843
    case 8:
      CCEmap_mask = (0xff<<(CCEind&0x1f));
      break;
2844 2845

    default:
2846 2847
      AssertFatal(1==0,
		  "Illegal L2 value %d\n", L2 );
2848 2849
    }

2850
    CCEmap_cand = (*CCEmap)&CCEmap_mask;
2851 2852

    // CCE is not allocated yet
2853 2854

    if (CCEmap_cand == 0) {
2855 2856

      if (do_common == 1)
2857
        LOG_D(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",
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2858
                pdcch_vars[eNB_id]->num_pdcch_symbols,m,L2,sizeof_bits,CCEind,nCCE,*CCEmap,CCEmap_mask);
2859
      else
2860
        LOG_D(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) format %d\n",
2861
                pdcch_vars[eNB_id]->num_pdcch_symbols,m,L2,sizeof_bits,CCEind,nCCE,*CCEmap,CCEmap_mask,format_c);
2862

2863
       dci_decoding(sizeof_bits,
2864
                   L,
2865
                   &pdcch_vars[eNB_id]->e_rx[CCEind*72],
2866
                   &dci_decoded_output[current_thread_id][0]);
2867 2868 2869 2870
      /*
        for (i=0;i<3+(sizeof_bits>>3);i++)
        printf("dci_decoded_output[%d] => %x\n",i,dci_decoded_output[i]);
      */
2871

2872
      crc = (crc16(&dci_decoded_output[current_thread_id][0],sizeof_bits)>>16) ^ extract_crc(&dci_decoded_output[current_thread_id][0],sizeof_bits);
2873
#ifdef DEBUG_DCI_DECODING
2874
      printf("crc =>%x\n",crc);
2875
#endif
2876 2877

      if (((L>1) && ((crc == si_rnti)||
2878
		     (crc == p_rnti)||
2879
                     (crc == ra_rnti)))||
2880
          (crc == pdcch_vars[eNB_id]->crnti))   {
2881 2882 2883
        dci_alloc[*dci_cnt].dci_length = sizeof_bits;
        dci_alloc[*dci_cnt].rnti       = crc;
        dci_alloc[*dci_cnt].L          = L;
2884
        dci_alloc[*dci_cnt].firstCCE   = CCEind;
2885

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hbilel committed
2886
        //printf("DCI FOUND !!! crc =>%x,  sizeof_bits %d, sizeof_bytes %d \n",crc, sizeof_bits, sizeof_bytes);
2887
        if (sizeof_bytes<=4) {
2888 2889 2890 2891
          dci_alloc[*dci_cnt].dci_pdu[3] = dci_decoded_output[current_thread_id][0];
          dci_alloc[*dci_cnt].dci_pdu[2] = dci_decoded_output[current_thread_id][1];
          dci_alloc[*dci_cnt].dci_pdu[1] = dci_decoded_output[current_thread_id][2];
          dci_alloc[*dci_cnt].dci_pdu[0] = dci_decoded_output[current_thread_id][3];
2892
#ifdef DEBUG_DCI_DECODING
2893 2894 2895 2896
          printf("DCI => %x,%x,%x,%x\n",dci_decoded_output[current_thread_id][0],
                  dci_decoded_output[current_thread_id][1],
                  dci_decoded_output[current_thread_id][2],
                  dci_decoded_output[current_thread_id][3]);
2897
#endif
2898
        } else {
2899 2900 2901 2902 2903 2904 2905 2906
          dci_alloc[*dci_cnt].dci_pdu[7] = dci_decoded_output[current_thread_id][0];
          dci_alloc[*dci_cnt].dci_pdu[6] = dci_decoded_output[current_thread_id][1];
          dci_alloc[*dci_cnt].dci_pdu[5] = dci_decoded_output[current_thread_id][2];
          dci_alloc[*dci_cnt].dci_pdu[4] = dci_decoded_output[current_thread_id][3];
          dci_alloc[*dci_cnt].dci_pdu[3] = dci_decoded_output[current_thread_id][4];
          dci_alloc[*dci_cnt].dci_pdu[2] = dci_decoded_output[current_thread_id][5];
          dci_alloc[*dci_cnt].dci_pdu[1] = dci_decoded_output[current_thread_id][6];
          dci_alloc[*dci_cnt].dci_pdu[0] = dci_decoded_output[current_thread_id][7];
2907
#ifdef DEBUG_DCI_DECODING
2908
          printf("DCI => %x,%x,%x,%x,%x,%x,%x,%x\n",
2909 2910
              dci_decoded_output[current_thread_id][0],dci_decoded_output[current_thread_id][1],dci_decoded_output[current_thread_id][2],dci_decoded_output[current_thread_id][3],
              dci_decoded_output[current_thread_id][4],dci_decoded_output[current_thread_id][5],dci_decoded_output[current_thread_id][6],dci_decoded_output[current_thread_id][7]);
2911
#endif
2912 2913 2914 2915 2916
        }

        if (crc==si_rnti) {
          dci_alloc[*dci_cnt].format     = format_si;
          *dci_cnt = *dci_cnt+1;
2917 2918 2919
        } else if (crc==p_rnti) {
          dci_alloc[*dci_cnt].format     = format_p;
          *dci_cnt = *dci_cnt+1;
2920 2921 2922
        } else if (crc==ra_rnti) {
          dci_alloc[*dci_cnt].format     = format_ra;
          // store first nCCE of group for PUCCH transmission of ACK/NAK
2923
          pdcch_vars[eNB_id]->nCCE[subframe]=CCEind;
2924
          *dci_cnt = *dci_cnt+1;
2925
        } else if (crc==pdcch_vars[eNB_id]->crnti) {
2926

2927
          if ((mode&UL_DCI)&&(format_c == format0)&&((dci_decoded_output[current_thread_id][0]&0x80)==0)) {// check if pdu is format 0 or 1A
2928 2929 2930 2931
            if (*format0_found == 0) {
              dci_alloc[*dci_cnt].format     = format0;
              *format0_found = 1;
              *dci_cnt = *dci_cnt+1;
2932
              pdcch_vars[eNB_id]->nCCE[subframe]=CCEind;
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            }
          } else if (format_c == format0) { // this is a format 1A DCI
            dci_alloc[*dci_cnt].format     = format1A;
            *dci_cnt = *dci_cnt+1;
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            pdcch_vars[eNB_id]->nCCE[subframe]=CCEind;
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          } 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;
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              pdcch_vars[eNB_id]->nCCE[subframe]=CCEind;
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            }
          }
        }

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        //LOG_I(PHY,"DCI decoding CRNTI  [format: %d, nCCE[subframe: %d]: %d ], AggregationLevel %d \n",format_c, subframe, pdcch_vars[eNB_id]->nCCE[subframe],L2);
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        //  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));
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          break;

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

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

2972
#ifdef DEBUG_DCI_DECODING
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        LOG_I(PHY,"[DCI search] Found DCI %d rnti %x Aggregation %d length %d format %s in CCE %d (CCEmap %x) candidate %d / %d \n",
              *dci_cnt,crc,1<<L,sizeof_bits,dci_format_strings[dci_alloc[*dci_cnt-1].format],CCEind,*CCEmap,m,nb_candidates );
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        dump_dci(frame_parms,&dci_alloc[*dci_cnt-1]);

2977
#endif
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         return;
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      } // rnti match
    }  // CCEmap_cand == 0
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/*    
	if ( agregationLevel != 0xFF &&
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        (format_c == format0 && m==0 && si_rnti != SI_RNTI))
    {
      //Only valid for OAI : Save some processing time when looking for DCI format0. From the log we see the DCI only on candidate 0.
      return;
    }
2988
*/
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  } // candidate loop
}

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uint16_t dci_CRNTI_decoding_procedure(PHY_VARS_UE *ue,
                                DCI_ALLOC_t *dci_alloc,
                                uint8_t DCIFormat,
                                uint8_t agregationLevel,
                                int16_t eNB_id,
                                uint8_t subframe)
{

  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[ue->current_thread_id[subframe]];
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  LTE_DL_FRAME_PARMS *frame_parms  = &ue->frame_parms;
  uint8_t mi = get_mi(&ue->frame_parms,subframe);
  uint16_t ra_rnti=99;
  uint8_t format0_found=0,format_c_found=0;
  uint8_t tmode = ue->transmission_mode[eNB_id];
  uint8_t frame_type = frame_parms->frame_type;
  uint8_t format0_size_bits=0,format0_size_bytes=0;
  uint8_t format1_size_bits=0,format1_size_bytes=0;
  dci_detect_mode_t mode = dci_detect_mode_select(&ue->frame_parms,subframe);

  switch (frame_parms->N_RB_DL) {
  case 6:
    if (frame_type == TDD) {
      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);

    } else {
      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);
    }

    break;

  case 25:
  default:
    if (frame_type == TDD) {
      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);
    } else {
      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);
    }

    break;

  case 50:
    if (frame_type == TDD) {
      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);

    } else {
      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);
    }

    break;

  case 100:
    if (frame_type == TDD) {
      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);
    } else {
      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);
    }

    break;
  }

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

  // Now check UE_SPEC format0/1A ue_spec search spaces at aggregation 8
  dci_decoding_procedure0(pdcch_vars,0,mode,
                          subframe,
                          dci_alloc,
                          eNB_id,
3086
                          ue->current_thread_id[subframe],
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                          frame_parms,
                          mi,
                          ((ue->decode_SIB == 1) ? SI_RNTI : 0),
                          ra_rnti,
              P_RNTI,
              agregationLevel,
                          format1A,
                          format1A,
                          format1A,
                          format0,
                          format0_size_bits,
                          format0_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);

  if (DCIFormat == 1)
  {
      if ((tmode < 3) || (tmode == 7)) {
          //printf("Crnti decoding frame param agregation %d DCI %d \n",agregationLevel,DCIFormat);

          // Now check UE_SPEC format 1 search spaces at aggregation 1

           //printf("[DCI search] Format 1/1A aggregation 1\n");

          old_dci_cnt=dci_cnt;
          dci_decoding_procedure0(pdcch_vars,0,mode,subframe,
                                  dci_alloc,
                                  eNB_id,
3123
                                  ue->current_thread_id[subframe],
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                                  frame_parms,
                                  mi,
                                  ((ue->decode_SIB == 1) ? SI_RNTI : 0),
                                  ra_rnti,
                                  P_RNTI,
                                  0,
                                  format1A,
                                  format1A,
                                  format1A,
                                  format1,
                                  format1_size_bits,
                                  format1_size_bytes,
                                  &dci_cnt,
                                  &format0_found,
                                  &format_c_found,
                                  &CCEmap0,
                                  &CCEmap1,
                                  &CCEmap2);

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

          if (dci_cnt>old_dci_cnt)
            return(dci_cnt);

          //printf("Crnti 1 decoding frame param agregation %d DCI %d \n",agregationLevel,DCIFormat);

      }
      else
      {
          AssertFatal(0,"Other Transmission mode not yet coded\n");
      }
  }
  else
  {
     AssertFatal(0,"DCI format %d not yet implemented \n",DCIFormat);
  }

  return(dci_cnt);

}

3167
uint16_t dci_decoding_procedure(PHY_VARS_UE *ue,
3168 3169 3170 3171 3172 3173
                                DCI_ALLOC_t *dci_alloc,
                                int do_common,
                                int16_t eNB_id,
                                uint8_t subframe)
{

3174 3175
  uint8_t  dci_cnt=0,old_dci_cnt=0;
  uint32_t CCEmap0=0,CCEmap1=0,CCEmap2=0;
3176
  LTE_UE_PDCCH **pdcch_vars = ue->pdcch_vars[ue->current_thread_id[subframe]];
3177 3178
  LTE_DL_FRAME_PARMS *frame_parms  = &ue->frame_parms;
  uint8_t mi = get_mi(&ue->frame_parms,subframe);
3179 3180
  uint16_t ra_rnti=99;
  uint8_t format0_found=0,format_c_found=0;
3181
  uint8_t tmode = ue->transmission_mode[eNB_id];
3182
  uint8_t frame_type = frame_parms->frame_type;
3183
  uint8_t format1A_size_bits=0,format1A_size_bytes=0;
3184
  uint8_t format1C_size_bits=0,format1C_size_bytes=0;
3185 3186 3187 3188
  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;
3189
  dci_detect_mode_t mode = dci_detect_mode_select(&ue->frame_parms,subframe);
3190 3191 3192 3193 3194 3195

  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);
3196 3197
      format1C_size_bits  = sizeof_DCI1C_1_5MHz_t;
      format1C_size_bytes = sizeof(DCI1C_1_5MHz_t);
3198 3199 3200 3201
      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);
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      if (frame_parms->nb_antenna_ports_eNB == 2) {
3204 3205 3206 3207
        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) {
3209 3210 3211 3212
        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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      }
3214
    } else {
3215 3216
      format1A_size_bits  = sizeof_DCI1A_1_5MHz_FDD_t;
      format1A_size_bytes = sizeof(DCI1A_1_5MHz_FDD_t);
3217 3218
      format1C_size_bits  = sizeof_DCI1C_1_5MHz_t;
      format1C_size_bytes = sizeof(DCI1C_1_5MHz_t);
3219 3220 3221 3222
      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);
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      if (frame_parms->nb_antenna_ports_eNB == 2) {
3225 3226 3227 3228
        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) {
3230 3231 3232 3233
        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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      }
3235
    }
3236

3237
    break;
3238

3239
  case 25:
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  default:
3241 3242 3243
    if (frame_type == TDD) {
      format1A_size_bits  = sizeof_DCI1A_5MHz_TDD_1_6_t;
      format1A_size_bytes = sizeof(DCI1A_5MHz_TDD_1_6_t);
3244 3245
      format1C_size_bits  = sizeof_DCI1C_5MHz_t;
      format1C_size_bytes = sizeof(DCI1C_5MHz_t);
3246 3247 3248 3249
      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);
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      if (frame_parms->nb_antenna_ports_eNB == 2) {
3252 3253 3254 3255
        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) {
3257 3258 3259 3260
        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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      }
3262
    } else {
3263 3264
      format1A_size_bits  = sizeof_DCI1A_5MHz_FDD_t;
      format1A_size_bytes = sizeof(DCI1A_5MHz_FDD_t);
3265 3266
      format1C_size_bits  = sizeof_DCI1C_5MHz_t;
      format1C_size_bytes = sizeof(DCI1C_5MHz_t);
3267 3268 3269 3270
      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);
3271

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      if (frame_parms->nb_antenna_ports_eNB == 2) {
3273 3274 3275 3276
        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) {
3278 3279 3280 3281
        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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      }
3283
    }
3284

3285
    break;
3286

3287 3288 3289 3290
  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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      format1C_size_bits  = sizeof_DCI1C_10MHz_t;
      format1C_size_bytes = sizeof(DCI1C_10MHz_t);
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      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);
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      if (frame_parms->nb_antenna_ports_eNB == 2) {
3299 3300 3301 3302
        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) {
3304 3305 3306 3307
        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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      }
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    } else {
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      format1A_size_bits  = sizeof_DCI1A_10MHz_FDD_t;
      format1A_size_bytes = sizeof(DCI1A_10MHz_FDD_t);
3312 3313
      format1C_size_bits  = sizeof_DCI1C_10MHz_t;
      format1C_size_bytes = sizeof(DCI1C_10MHz_t);
3314 3315 3316 3317
      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);
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      if (frame_parms->nb_antenna_ports_eNB == 2) {
3320 3321 3322 3323
        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) {
3325 3326 3327 3328
        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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      }
3330
    }
3331

3332 3333 3334 3335 3336 3337
    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);
3338 3339
      format1C_size_bits  = sizeof_DCI1C_20MHz_t;
      format1C_size_bytes = sizeof(DCI1C_20MHz_t);
3340 3341 3342 3343
      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);
3344

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3345
      if (frame_parms->nb_antenna_ports_eNB == 2) {
3346 3347 3348 3349
        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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3350
      } else if (frame_parms->nb_antenna_ports_eNB == 4) {
3351 3352 3353 3354
        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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Raymond Knopp committed
3355
      }
3356
    } else {
3357 3358
      format1A_size_bits  = sizeof_DCI1A_20MHz_FDD_t;
      format1A_size_bytes = sizeof(DCI1A_20MHz_FDD_t);
3359 3360
      format1C_size_bits  = sizeof_DCI1C_20MHz_t;
      format1C_size_bytes = sizeof(DCI1C_20MHz_t);
3361 3362 3363 3364
      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);
3365

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3366
      if (frame_parms->nb_antenna_ports_eNB == 2) {
3367 3368 3369 3370
        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);
Xiwen JIANG's avatar
Xiwen JIANG committed
3371
      } else if (frame_parms->nb_antenna_ports_eNB == 4) {
3372 3373 3374 3375
        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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Raymond Knopp committed
3376
      }
3377
    }
3378

3379 3380 3381
    break;
  }

3382
  if (do_common == 1) {
3383 3384 3385
#ifdef DEBUG_DCI_DECODING
    printf("[DCI search] doing common search/format0 aggregation 4\n");
#endif
3386

3387 3388
    if (ue->prach_resources[eNB_id])
      ra_rnti = ue->prach_resources[eNB_id]->ra_RNTI;
3389

3390
    // First check common search spaces at aggregation 4 (SI_RNTI, P_RNTI and RA_RNTI format 0/1A),
3391
    // and UE_SPEC format0 (PUSCH) too while we're at it
3392
    dci_decoding_procedure0(pdcch_vars,1,mode,subframe,
3393 3394
                            dci_alloc,
                            eNB_id,
3395
                            ue->current_thread_id[subframe],
3396 3397
                            frame_parms,
                            mi,
3398
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0) ,
3399
                            ra_rnti,
3400
			    P_RNTI,
3401 3402 3403
                            2,
                            format1A,
                            format1A,
3404
                            format1A,
3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416
                            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)))
3417
      return(dci_cnt);
3418

3419
    // Now check common search spaces at aggregation 4 (SI_RNTI,P_RNTI and RA_RNTI and C-RNTI format 1C),
3420
    // and UE_SPEC format0 (PUSCH) too while we're at it
3421
    dci_decoding_procedure0(pdcch_vars,1,mode,subframe,
3422 3423
                            dci_alloc,
                            eNB_id,
3424
                            ue->current_thread_id[subframe],
3425 3426
                            frame_parms,
                            mi,
3427
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3428
                            ra_rnti,
3429
			    P_RNTI,
3430 3431 3432 3433
                            2,
                            format1C,
                            format1C,
                            format1C,
3434
                            format1C,
3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447
                            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);

3448
    // Now check common search spaces at aggregation 8 (SI_RNTI,P_RNTI and RA_RNTI format 1A),
3449 3450 3451 3452 3453
    // 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
3454
    dci_decoding_procedure0(pdcch_vars,1,mode,subframe,
3455 3456
                            dci_alloc,
                            eNB_id,
3457
                            ue->current_thread_id[subframe],
3458 3459
                            frame_parms,
                            mi,
3460
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3461
			    P_RNTI,
3462 3463 3464 3465
                            ra_rnti,
                            3,
                            format1A,
                            format1A,
3466
                            format1A,
3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478
                            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)))
3479
      return(dci_cnt);
3480

3481 3482
    // 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
3483
    dci_decoding_procedure0(pdcch_vars,1,mode,subframe,
3484 3485
                            dci_alloc,
                            eNB_id,
3486
                            ue->current_thread_id[subframe],
3487 3488
                            frame_parms,
                            mi,
3489
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3490
                            ra_rnti,
3491 3492 3493
			    P_RNTI,
			    3,
                            format1C,
3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504
                            format1C,
                            format1C,
                            format1C,
                            format1C_size_bits,
                            format1C_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);
3505 3506 3507 3508
    //#endif

  }

3509
  if (ue->UE_mode[eNB_id] <= PRACH)
3510 3511
    return(dci_cnt);

3512 3513
  if (ue->prach_resources[eNB_id])
    ra_rnti = ue->prach_resources[eNB_id]->ra_RNTI;
3514

3515
  // Now check UE_SPEC format0/1A ue_spec search spaces at aggregation 8
3516
  //  printf("[DCI search] Format 0/1A aggregation 8\n");
3517
  dci_decoding_procedure0(pdcch_vars,0,mode,
3518 3519 3520
                          subframe,
                          dci_alloc,
                          eNB_id,
3521
                          ue->current_thread_id[subframe],
3522 3523
                          frame_parms,
                          mi,
3524
                          ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3525
                          ra_rnti,
3526
			  P_RNTI,
3527
			  0,
3528
                          format1A,
3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541
                          format1A,
                          format1A,
                          format0,
                          format0_size_bits,
                          format0_size_bytes,
                          &dci_cnt,
                          &format0_found,
                          &format_c_found,
                          &CCEmap0,
                          &CCEmap1,
                          &CCEmap2);

  if ((CCEmap0==0xffff)||
3542 3543
      ((format0_found==1)&&(format_c_found==1)))
    return(dci_cnt);
3544

3545 3546 3547 3548
  //printf("[DCI search] Format 0 aggregation 1 dci_cnt %d\n",dci_cnt);

  if (dci_cnt == 0)
  {
3549
  // Now check UE_SPEC format 0 search spaces at aggregation 4
3550
  dci_decoding_procedure0(pdcch_vars,0,mode,
3551 3552 3553
                          subframe,
                          dci_alloc,
                          eNB_id,
3554
                          ue->current_thread_id[subframe],
3555 3556
                          frame_parms,
                          mi,
3557
                          ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3558
                          ra_rnti,
3559
			  P_RNTI,
3560
			  1,
3561
                          format1A,
3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574
                          format1A,
                          format1A,
                          format0,
                          format0_size_bits,
                          format0_size_bytes,
                          &dci_cnt,
                          &format0_found,
                          &format_c_found,
                          &CCEmap0,
                          &CCEmap1,
                          &CCEmap2);

  if ((CCEmap0==0xffff)||
3575 3576 3577
      ((format0_found==1)&&(format_c_found==1)))
    return(dci_cnt);

3578

3579 3580 3581 3582 3583
  //printf("[DCI search] Format 0 aggregation 2 dci_cnt %d\n",dci_cnt);
  }

  if (dci_cnt == 0)
  {
3584
  // Now check UE_SPEC format 0 search spaces at aggregation 2
3585
  dci_decoding_procedure0(pdcch_vars,0,mode,
3586 3587 3588
                          subframe,
                          dci_alloc,
                          eNB_id,
3589
                          ue->current_thread_id[subframe],
3590 3591
                          frame_parms,
                          mi,
3592
                          ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3593
                          ra_rnti,
3594
			  P_RNTI,
3595
                          2,
3596 3597
                          format1A,
                          format1A,
3598
                          format1A,
3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609
                          format0,
                          format0_size_bits,
                          format0_size_bytes,
                          &dci_cnt,
                          &format0_found,
                          &format_c_found,
                          &CCEmap0,
                          &CCEmap1,
                          &CCEmap2);

  if ((CCEmap0==0xffff)||
3610 3611 3612
      ((format0_found==1)&&(format_c_found==1)))
    return(dci_cnt);

3613 3614 3615 3616 3617
  //printf("[DCI search] Format 0 aggregation 4 dci_cnt %d\n",dci_cnt);
  }

  if (dci_cnt == 0)
  {
3618
  // Now check UE_SPEC format 0 search spaces at aggregation 1
3619
  dci_decoding_procedure0(pdcch_vars,0,mode,
3620 3621 3622
                          subframe,
                          dci_alloc,
                          eNB_id,
3623
                          ue->current_thread_id[subframe],
3624 3625
                          frame_parms,
                          mi,
3626
                          ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3627
                          ra_rnti,
3628
			  P_RNTI,
3629
                          3,
3630 3631
                          format1A,
                          format1A,
3632
                          format1A,
3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643
                          format0,
                          format0_size_bits,
                          format0_size_bytes,
                          &dci_cnt,
                          &format0_found,
                          &format_c_found,
                          &CCEmap0,
                          &CCEmap1,
                          &CCEmap2);

  if ((CCEmap0==0xffff)||
3644 3645 3646
      ((format0_found==1)&&(format_c_found==1)))
    return(dci_cnt);

3647
  //printf("[DCI search] Format 0 aggregation 8 dci_cnt %d\n",dci_cnt);
3648

3649
  }
3650
  // These are for CRNTI based on transmission mode
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3651
  if ((tmode < 3) || (tmode == 7)) {
3652
    // Now check UE_SPEC format 1 search spaces at aggregation 1
3653
    old_dci_cnt=dci_cnt;
3654
    dci_decoding_procedure0(pdcch_vars,0,mode,subframe,
3655 3656
                            dci_alloc,
                            eNB_id,
3657
                            ue->current_thread_id[subframe],
3658 3659
                            frame_parms,
                            mi,
3660
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3661
                            ra_rnti,
3662
			    P_RNTI,
3663 3664 3665
                            0,
                            format1A,
                            format1A,
3666
                            format1A,
3667 3668 3669 3670 3671 3672 3673 3674 3675
                            format1,
                            format1_size_bits,
                            format1_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);
3676
    //printf("[DCI search] Format 1 aggregation 1 dci_cnt %d\n",dci_cnt);
3677 3678 3679

    if ((CCEmap0==0xffff) ||
        (format_c_found==1))
3680
      return(dci_cnt);
3681

3682 3683
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);
3684 3685

    // Now check UE_SPEC format 1 search spaces at aggregation 2
3686
    old_dci_cnt=dci_cnt;
3687
    dci_decoding_procedure0(pdcch_vars,0,mode,subframe,
3688 3689
                            dci_alloc,
                            eNB_id,
3690
                            ue->current_thread_id[subframe],
3691 3692
                            frame_parms,
                            mi,
3693
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3694
                            ra_rnti,
3695
			    P_RNTI,
3696 3697 3698
                            1,
                            format1A,
                            format1A,
3699
                            format1A,
3700 3701 3702 3703 3704 3705 3706 3707 3708
                            format1,
                            format1_size_bits,
                            format1_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);
3709
    //printf("[DCI search] Format 1 aggregation 2 dci_cnt %d\n",dci_cnt);
3710 3711 3712

    if ((CCEmap0==0xffff)||
        (format_c_found==1))
3713
      return(dci_cnt);
3714

3715
    if (dci_cnt>old_dci_cnt)
3716
      return(dci_cnt);
3717

3718
    // Now check UE_SPEC format 1 search spaces at aggregation 4
3719
    old_dci_cnt=dci_cnt;
3720
    dci_decoding_procedure0(pdcch_vars,0,mode,subframe,
3721 3722
                            dci_alloc,
                            eNB_id,
3723
                            ue->current_thread_id[subframe],
3724 3725
                            frame_parms,
                            mi,
3726
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3727
                            ra_rnti,
3728 3729 3730
			    P_RNTI,
			    2,
                            format1A,
3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741
                            format1A,
                            format1A,
                            format1,
                            format1_size_bits,
                            format1_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);
3742
    //printf("[DCI search] Format 1 aggregation 4 dci_cnt %d\n",dci_cnt);
3743 3744 3745

    if ((CCEmap0==0xffff)||
        ((format0_found==1)&&(format_c_found==1)))
3746
      return(dci_cnt);
3747

3748 3749 3750 3751 3752 3753
    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;
3754
    dci_decoding_procedure0(pdcch_vars,0,mode,subframe,
3755 3756
                            dci_alloc,
                            eNB_id,
3757
                            ue->current_thread_id[subframe],
3758 3759
                            frame_parms,
                            mi,
3760
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3761
                            ra_rnti,
3762
			    P_RNTI,
3763 3764 3765
                            3,
                            format1A,
                            format1A,
3766
                            format1A,
3767 3768 3769 3770 3771 3772 3773 3774 3775
                            format1,
                            format1_size_bits,
                            format1_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);
3776
    //printf("[DCI search] Format 1 aggregation 8 dci_cnt %d\n",dci_cnt);
3777 3778 3779

    if ((CCEmap0==0xffff)||
        ((format0_found==1)&&(format_c_found==1)))
3780
      return(dci_cnt);
3781

3782 3783
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);
3784 3785 3786

    //#endif //ALL_AGGREGATION
  } else if (tmode == 3) {
3787 3788


hbilel's avatar
hbilel committed
3789
    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);
3790
    // Now check UE_SPEC format 2A_2A search spaces at aggregation 1
hbilel's avatar
hbilel committed
3791
    old_dci_cnt=dci_cnt;
3792
    dci_decoding_procedure0(pdcch_vars,0,mode,
3793 3794 3795
                            subframe,
                            dci_alloc,
                            eNB_id,
3796
                            ue->current_thread_id[subframe],
3797 3798
                            frame_parms,
                            mi,
3799
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3800
                            ra_rnti,
hbilel's avatar
hbilel committed
3801
                            P_RNTI,
3802 3803 3804
                            0,
                            format1A,
                            format1A,
3805
                            format1A,
3806 3807 3808 3809 3810 3811 3812 3813 3814 3815
                            format2A,
                            format2A_size_bits,
                            format2A_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);

hbilel's avatar
hbilel committed
3816
    LOG_D(PHY," format 2A_2A search CCEmap0 %x, format0_found %d, format_c_found %d \n", CCEmap0, format0_found, format_c_found);
3817 3818
    if ((CCEmap0==0xffff)||
        ((format0_found==1)&&(format_c_found==1)))
3819
      return(dci_cnt);
3820

hbilel's avatar
hbilel committed
3821
    LOG_D(PHY," format 2A_2A search dci_cnt %d, old_dci_cn t%d \n", dci_cnt, old_dci_cnt);
3822 3823 3824
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

3825
    // Now check UE_SPEC format 2 search spaces at aggregation 2
hbilel's avatar
hbilel committed
3826
    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
hbilel committed
3827
    old_dci_cnt=dci_cnt;
3828
    dci_decoding_procedure0(pdcch_vars,0,mode,
3829 3830 3831
                            subframe,
                            dci_alloc,
                            eNB_id,
3832
                            ue->current_thread_id[subframe],
3833 3834
                            frame_parms,
                            mi,
3835
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3836
                            ra_rnti,
3837
			    P_RNTI,
3838 3839 3840
                            1,
                            format1A,
                            format1A,
3841
                            format1A,
3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853
                            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)))
3854
      return(dci_cnt);
3855

hbilel's avatar
hbilel committed
3856
    LOG_D(PHY," format 2A_2A search dci_cnt %d, old_dci_cn t%d \n", dci_cnt, old_dci_cnt);
3857 3858 3859
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

3860
    // Now check UE_SPEC format 2_2A search spaces at aggregation 4
hbilel's avatar
hbilel committed
3861 3862
    LOG_D(PHY," Now check UE_SPEC format 2_2A search spaces at aggregation 4 \n");
    old_dci_cnt=dci_cnt;
3863
    dci_decoding_procedure0(pdcch_vars,0,mode,
3864 3865 3866
                            subframe,
                            dci_alloc,
                            eNB_id,
3867
                            ue->current_thread_id[subframe],
3868 3869
                            frame_parms,
                            mi,
3870
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3871
                            ra_rnti,
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hbilel committed
3872
                            P_RNTI,
3873 3874 3875
                            2,
                            format1A,
                            format1A,
3876
                            format1A,
3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888
                            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)))
3889
      return(dci_cnt);
3890

hbilel's avatar
hbilel committed
3891
    LOG_D(PHY," format 2A_2A search dci_cnt %d, old_dci_cn t%d \n", dci_cnt, old_dci_cnt);
3892 3893 3894 3895
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

    //#ifdef ALL_AGGREGATION
3896
    // Now check UE_SPEC format 2_2A search spaces at aggregation 8
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hbilel committed
3897
    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
hbilel committed
3898
    old_dci_cnt=dci_cnt;
3899
    dci_decoding_procedure0(pdcch_vars,0,mode,
3900 3901 3902
                            subframe,
                            dci_alloc,
                            eNB_id,
3903
                            ue->current_thread_id[subframe],
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                            frame_parms,
                            mi,
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                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3907
                            ra_rnti,
3908
			    P_RNTI,
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                            3,
                            format1A,
                            format1A,
3912
                            format1A,
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                            format2A,
                            format2A_size_bits,
                            format2A_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);
3922
    //#endif
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hbilel committed
3923 3924 3925 3926 3927 3928 3929
    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);
3930
  } else if (tmode == 4) {
3931

3932
    // Now check UE_SPEC format 2_2A search spaces at aggregation 1
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hbilel committed
3933
    old_dci_cnt=dci_cnt;
3934
    dci_decoding_procedure0(pdcch_vars,0,mode,
3935 3936 3937
                            subframe,
                            dci_alloc,
                            eNB_id,
3938
                            ue->current_thread_id[subframe],
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                            frame_parms,
                            mi,
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                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3942
                            ra_rnti,
3943
			    P_RNTI,
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                            0,
                            format1A,
                            format1A,
3947
                            format1A,
3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959
                            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)))
3960
      return(dci_cnt);
3961

3962 3963 3964
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

3965
    // Now check UE_SPEC format 2 search spaces at aggregation 2
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hbilel committed
3966
    old_dci_cnt=dci_cnt;
3967
    dci_decoding_procedure0(pdcch_vars,0,mode,
3968 3969 3970
                            subframe,
                            dci_alloc,
                            eNB_id,
3971
                            ue->current_thread_id[subframe],
3972 3973
                            frame_parms,
                            mi,
3974
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3975
                            ra_rnti,
3976
			    P_RNTI,
3977 3978 3979
                            1,
                            format1A,
                            format1A,
3980
                            format1A,
3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992
                            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)))
3993
      return(dci_cnt);
3994

3995 3996 3997
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

3998
    // Now check UE_SPEC format 2_2A search spaces at aggregation 4
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hbilel committed
3999
    old_dci_cnt=dci_cnt;
4000
    dci_decoding_procedure0(pdcch_vars,0,mode,
4001 4002 4003
                            subframe,
                            dci_alloc,
                            eNB_id,
4004
                            ue->current_thread_id[subframe],
4005 4006
                            frame_parms,
                            mi,
4007
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
4008
                            ra_rnti,
4009
			    P_RNTI,
4010 4011 4012
                            2,
                            format1A,
                            format1A,
4013
                            format1A,
4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025
                            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)))
4026
      return(dci_cnt);
4027

4028 4029 4030 4031
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

    //#ifdef ALL_AGGREGATION
4032
    // Now check UE_SPEC format 2_2A search spaces at aggregation 8
hbilel's avatar
hbilel committed
4033
    old_dci_cnt=dci_cnt;
4034
    dci_decoding_procedure0(pdcch_vars,0,mode,
4035 4036 4037
                            subframe,
                            dci_alloc,
                            eNB_id,
4038
                            ue->current_thread_id[subframe],
4039 4040
                            frame_parms,
                            mi,
4041
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
4042
                            ra_rnti,
4043
			    P_RNTI,
4044 4045 4046
                            3,
                            format1A,
                            format1A,
4047
                            format1A,
4048 4049 4050 4051 4052 4053 4054 4055 4056
                            format2,
                            format2_size_bits,
                            format2_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);
4057
    //#endif
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Xiwen JIANG committed
4058
  } else if ((tmode==5) || (tmode==6)) { // This is MU-MIMO
4059

4060
    // Now check UE_SPEC format 1E_2A_M10PRB search spaces aggregation 1
4061
#ifdef DEBUG_DCI_DECODING
4062
    LOG_I(PHY," MU-MIMO check UE_SPEC format 1E_2A_M10PRB\n");
4063
#endif
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hbilel committed
4064
    old_dci_cnt=dci_cnt;
4065
    dci_decoding_procedure0(pdcch_vars,0,mode,
4066 4067 4068
                            subframe,
                            dci_alloc,
                            eNB_id,
4069
                            ue->current_thread_id[subframe],
4070 4071
                            frame_parms,
                            mi,
4072
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
4073
                            ra_rnti,
4074
			    P_RNTI,
4075 4076 4077
                            0,
                            format1A,
                            format1A,
4078
                            format1A,
4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091
                            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)))
4092
      return(dci_cnt);
4093

4094 4095
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);
4096 4097

    // Now check UE_SPEC format 1E_2A_M10PRB search spaces aggregation 2
hbilel's avatar
hbilel committed
4098
    old_dci_cnt=dci_cnt;
4099
    dci_decoding_procedure0(pdcch_vars,0,mode,
4100 4101 4102
                            subframe,
                            dci_alloc,
                            eNB_id,
4103
                            ue->current_thread_id[subframe],
4104 4105
                            frame_parms,
                            mi,
4106
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
4107
                            ra_rnti,
4108
			    P_RNTI,
4109 4110 4111
                            1,
                            format1A,
                            format1A,
4112
                            format1A,
4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125
                            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);
4126

4127 4128
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);
4129

4130
    // Now check UE_SPEC format 1E_2A_M10PRB search spaces aggregation 4
hbilel's avatar
hbilel committed
4131
    old_dci_cnt=dci_cnt;
4132
    dci_decoding_procedure0(pdcch_vars,0,mode,
4133 4134 4135
                            subframe,
                            dci_alloc,
                            eNB_id,
4136
                            ue->current_thread_id[subframe],
4137 4138
                            frame_parms,
                            mi,
4139
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
4140
                            ra_rnti,
4141
			    P_RNTI,
4142 4143 4144
                            2,
                            format1A,
                            format1A,
4145
                            format1A,
4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158
                            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);
4159

4160 4161
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);
4162

4163 4164 4165
    //#ifdef ALL_AGGREGATION

    // Now check UE_SPEC format 1E_2A_M10PRB search spaces at aggregation 8
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hbilel committed
4166
    old_dci_cnt=dci_cnt;
4167
    dci_decoding_procedure0(pdcch_vars,0,mode,
4168 4169 4170
                            subframe,
                            dci_alloc,
                            eNB_id,
4171
                            ue->current_thread_id[subframe],
4172 4173
                            frame_parms,
                            mi,
4174
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
4175
                            ra_rnti,
4176
			    P_RNTI,
4177 4178 4179
                            3,
                            format1A,
                            format1A,
4180
                            format1A,
4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200
                            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

  }
4201 4202 4203 4204 4205

  return(dci_cnt);
}

#ifdef PHY_ABSTRACTION
4206
uint16_t dci_decoding_procedure_emul(LTE_UE_PDCCH **pdcch_vars,
4207 4208 4209 4210 4211 4212 4213
                                     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)
{

4214
  uint8_t  dci_cnt=0,i;
4215

4216 4217 4218 4219
  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);

4220
  for (i=num_common_dci; i<(num_ue_spec_dci+num_common_dci); i++) {
4221
    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,
4222 4223
          dci_alloc_tx[i].dci_pdu[0]&0x80);

4224
    if (dci_alloc_tx[i].rnti == pdcch_vars[eNB_id]->crnti) {
4225 4226 4227 4228 4229 4230 4231 4232 4233
      memcpy(dci_alloc_rx+dci_cnt,dci_alloc_tx+i,sizeof(DCI_ALLOC_t));
      dci_cnt++;
    }
  }


  return(dci_cnt);
}
#endif