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/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
 * the OAI Public License, Version 1.0  (the "License"); you may not use this file
 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.openairinterface.org/?page_id=698
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */
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/*! \file PHY/LTE_TRANSPORT/dci.c
* \brief Implements PDCCH physical channel TX/RX procedures (36.211) and DCI encoding/decoding (36.212/36.213). Current LTE compliance V8.6 2009-03.
* \author R. Knopp
* \date 2011
* \version 0.1
* \company Eurecom
* \email: knopp@eurecom.fr
* \note
* \warning
*/
#ifdef USER_MODE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#endif
#include "PHY/defs.h"
#include "PHY/extern.h"
#include "SCHED/defs.h"
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#include "SIMULATION/TOOLS/defs.h" // for taus 
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#include "PHY/sse_intrin.h"
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#include "assertions.h" 
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#include "T.h"
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//#define DEBUG_DCI_ENCODING 1
//#define DEBUG_DCI_DECODING 1
//#define DEBUG_PHY
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//#undef ALL_AGGREGATION

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

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

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

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

  // handle Special subframe case for TDD !!!

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

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

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

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



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

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

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

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

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


}


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

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

  coded_bits = 72 * (1<<aggregation_level);

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  /*

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

  return(e+coded_bits);
}

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

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

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

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

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

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

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

  int Msymb2;

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


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

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

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

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

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

  } // kprime loop
}

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

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

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

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

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

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



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

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

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

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


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

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

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

    pdcch_llr++;
    pdcch_llr8++;
  }

  return(0);
}


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

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

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

  return(0);

}

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

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#if defined(__x86_64__) || defined(__i386__)
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        avg128P = _mm_add_epi32(avg128P,_mm_madd_epi16(dl_ch128[0],dl_ch128[0]));
        avg128P = _mm_add_epi32(avg128P,_mm_madd_epi16(dl_ch128[1],dl_ch128[1]));
        avg128P = _mm_add_epi32(avg128P,_mm_madd_epi16(dl_ch128[2],dl_ch128[2]));
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#elif defined(__arm__)
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#endif
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        dl_ch128+=3;
        /*
          if (rb==0) {
          print_shorts("dl_ch128",&dl_ch128[0]);
          print_shorts("dl_ch128",&dl_ch128[1]);
          print_shorts("dl_ch128",&dl_ch128[2]);
          }
        */
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      }

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

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

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


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

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#elif defined(__arm__)

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

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


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

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#if defined(__x86_64__) || defined(__i386__)
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      rxdataF_comp128_0   = (__m128i *)&rxdataF_comp[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];
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      rxdataF_comp128_1   = (__m128i *)&rxdataF_comp[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];
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#elif defined(__arm__)
      rxdataF_comp128_0   = (int16x8_t *)&rxdataF_comp[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];
      rxdataF_comp128_1   = (int16x8_t *)&rxdataF_comp[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];
#endif
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      // MRC on each re of rb on MF output
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      for (i=0; i<frame_parms->N_RB_DL*3; i++) {
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#if defined(__x86_64__) || defined(__i386__)
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        rxdataF_comp128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rxdataF_comp128_0[i],1),_mm_srai_epi16(rxdataF_comp128_1[i],1));
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#elif defined(__arm__)
        rxdataF_comp128_0[i] = vhaddq_s16(rxdataF_comp128_0[i],rxdataF_comp128_1[i]);
#endif
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      }
    }
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#if defined(__x86_64__) || defined(__i386__)
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    rho128_0 = (__m128i *) &rho[0][symbol*frame_parms->N_RB_DL*12];
    rho128_1 = (__m128i *) &rho[1][symbol*frame_parms->N_RB_DL*12];
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#elif defined(__arm__)
    rho128_0 = (int16x8_t *) &rho[0][symbol*frame_parms->N_RB_DL*12];
    rho128_1 = (int16x8_t *) &rho[1][symbol*frame_parms->N_RB_DL*12];
#endif
856
    for (i=0; i<frame_parms->N_RB_DL*3; i++) {
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#if defined(__x86_64__) || defined(__i386__)
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      rho128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_0[i],1),_mm_srai_epi16(rho128_1[i],1));
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#elif defined(__arm__)
      rho128_0[i] = vhaddq_s16(rho128_0[i],rho128_1[i]);
#endif
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    }
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#if defined(__x86_64__) || defined(__i386__)
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    rho128_i0 = (__m128i *) &rho_i[0][symbol*frame_parms->N_RB_DL*12];
    rho128_i1 = (__m128i *) &rho_i[1][symbol*frame_parms->N_RB_DL*12];
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    rxdataF_comp128_i0   = (__m128i *)&rxdataF_comp_i[0][symbol*frame_parms->N_RB_DL*12];
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    rxdataF_comp128_i1   = (__m128i *)&rxdataF_comp_i[1][symbol*frame_parms->N_RB_DL*12];
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#elif defined(__arm__)
    rho128_i0 = (int16x8_t*) &rho_i[0][symbol*frame_parms->N_RB_DL*12];
    rho128_i1 = (int16x8_t*) &rho_i[1][symbol*frame_parms->N_RB_DL*12];
    rxdataF_comp128_i0   = (int16x8_t *)&rxdataF_comp_i[0][symbol*frame_parms->N_RB_DL*12];
    rxdataF_comp128_i1   = (int16x8_t *)&rxdataF_comp_i[1][symbol*frame_parms->N_RB_DL*12];
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#endif
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    // MRC on each re of rb on MF and rho
    for (i=0; i<frame_parms->N_RB_DL*3; i++) {
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#if defined(__x86_64__) || defined(__i386__)
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      rxdataF_comp128_i0[i] = _mm_adds_epi16(_mm_srai_epi16(rxdataF_comp128_i0[i],1),_mm_srai_epi16(rxdataF_comp128_i1[i],1));
      rho128_i0[i]          = _mm_adds_epi16(_mm_srai_epi16(rho128_i0[i],1),_mm_srai_epi16(rho128_i1[i],1));
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#elif defined(__arm__)
      rxdataF_comp128_i0[i] = vhaddq_s16(rxdataF_comp128_i0[i],rxdataF_comp128_i1[i]);
      rho128_i0[i]          = vhaddq_s16(rho128_i0[i],rho128_i1[i]);

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


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void pdcch_extract_rbs_single(int32_t **rxdataF,
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                              int32_t **dl_ch_estimates,
                              int32_t **rxdataF_ext,
                              int32_t **dl_ch_estimates_ext,
                              uint8_t symbol,
                              uint32_t high_speed_flag,
                              LTE_DL_FRAME_PARMS *frame_parms)
{
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  uint16_t rb,nb_rb=0;
  uint8_t i,j,aarx;
  int32_t *dl_ch0,*dl_ch0_ext,*rxF,*rxF_ext;
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  int nushiftmod3 = frame_parms->nushift%3;
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  uint8_t symbol_mod;
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  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
#ifdef DEBUG_DCI_DECODING
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  LOG_I(PHY, "extract_rbs_single: symbol_mod %d\n",symbol_mod);
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#endif
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  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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    if (high_speed_flag == 1)
      dl_ch0     = &dl_ch_estimates[aarx][5+(symbol*(frame_parms->ofdm_symbol_size))];
    else
      dl_ch0     = &dl_ch_estimates[aarx][5];
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    dl_ch0_ext = &dl_ch_estimates_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];

    rxF_ext   = &rxdataF_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];

    rxF       = &rxdataF[aarx][(frame_parms->first_carrier_offset + (symbol*(frame_parms->ofdm_symbol_size)))];
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932
    if ((frame_parms->N_RB_DL&1) == 0)  { // even number of RBs
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      for (rb=0; rb<frame_parms->N_RB_DL; rb++) {

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

          //dl_ch0++;
        }

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

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

            rxF_ext[i]=rxF[i];

          }

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

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

          for (i=0; i<12; i++) {
            if ((i!=nushiftmod3) &&
                (i!=(nushiftmod3+3)) &&
                (i!=(nushiftmod3+6)) &&
                (i!=(nushiftmod3+9))) {
              rxF_ext[j]=rxF[i];
              //                        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
              dl_ch0_ext[j++]=dl_ch0[i];
              //                printf("ch %d => (%d,%d)\n",i,*(short *)&dl_ch0[i],*(1+(short*)&dl_ch0[i]));
            }
          }

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

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

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

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

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

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

          for (i=0; i<12; i++) {
            if ((i!=nushiftmod3) &&
                (i!=(nushiftmod3+3)) &&
                (i!=(nushiftmod3+6)) &&
                (i!=(nushiftmod3+9))) {
              rxF_ext[j]=rxF[i];
              //                        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
              dl_ch0_ext[j++]=dl_ch0[i];
              //                printf("ch %d => (%d,%d)\n",i,*(short *)&dl_ch0[i],*(1+(short*)&dl_ch0[i]));
            }
          }

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

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

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

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

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


        nb_rb++;
        dl_ch0_ext+=8;
        rxF_ext+=8;
        dl_ch0+=12;
        rxF+=7;
        rb++;
      } else {
        for (i=0; i<6; i++) {
          dl_ch0_ext[i]=dl_ch0[i];
          rxF_ext[i]=rxF[i];
        }

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

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


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

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

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

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

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

          for (i=0; i<12; i++) {
            if ((i!=(nushiftmod3)) &&
                (i!=(nushiftmod3+3)) &&
                (i!=(nushiftmod3+6)) &&
                (i!=(nushiftmod3+9))) {
              rxF_ext[j]=rxF[i];
              //                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
              dl_ch0_ext[j++]=dl_ch0[i];
            }
          }

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

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

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

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

  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
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#ifdef DEBUG_DCI_DECODING
  LOG_I(PHY, "extract_rbs_dual: symbol_mod %d\n",symbol_mod);
#endif
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  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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    if (high_speed_flag==1) {
      dl_ch0     = &dl_ch_estimates[aarx][5+(symbol*(frame_parms->ofdm_symbol_size))];
      dl_ch1     = &dl_ch_estimates[2+aarx][5+(symbol*(frame_parms->ofdm_symbol_size))];
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    } else {
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      dl_ch0     = &dl_ch_estimates[aarx][5];
      dl_ch1     = &dl_ch_estimates[2+aarx][5];
    }
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    dl_ch0_ext = &dl_ch_estimates_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];
    dl_ch1_ext = &dl_ch_estimates_ext[2+aarx][symbol*(frame_parms->N_RB_DL*12)];

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    //    printf("pdcch extract_rbs: rxF_ext pos %d\n",symbol*(frame_parms->N_RB_DL*12));
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    rxF_ext   = &rxdataF_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];

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

        // For second half of RBs skip DC carrier
        if (rb==(frame_parms->N_RB_DL>>1)) {
          rxF       = &rxdataF[aarx][(1 + (symbol*(frame_parms->ofdm_symbol_size)))];
          //    dl_ch0++;
          //dl_ch1++;
        }

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

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

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

          for (i=0; i<12; i++) {
            if ((i!=nushiftmod3) &&
                (i!=nushiftmod3+3) &&
                (i!=nushiftmod3+6) &&
                (i!=nushiftmod3+9)) {
              rxF_ext[j]=rxF[i];
              //                            printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
              dl_ch0_ext[j]  =dl_ch0[i];
              dl_ch1_ext[j++]=dl_ch1[i];
            }
          }

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

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

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

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

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

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

        } else {
          j=0;

          for (i=0; i<12; i++) {
            if ((i!=nushiftmod3) &&
                (i!=nushiftmod3+3) &&
                (i!=nushiftmod3+6) &&
                (i!=nushiftmod3+9)) {
              rxF_ext[j]=rxF[i];
              //                        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
              dl_ch0_ext[j]=dl_ch0[i];
              dl_ch1_ext[j++]=dl_ch1[i];
              //                printf("ch %d => (%d,%d)\n",i,*(short *)&dl_ch0[i],*(1+(short*)&dl_ch0[i]));
            }
          }

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


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

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

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

        for (; i<12; i++) {
          dl_ch0_ext[i]=dl_ch0[i];
          dl_ch1_ext[i]=dl_ch1[i];
          rxF_ext[i]=rxF[(1+i)];
        }

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

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

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

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

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


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

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

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

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

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

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

          for (i=0; i<12; i++) {
            if ((i!=nushiftmod3) &&
                (i!=nushiftmod3+3) &&
                (i!=nushiftmod3+6) &&
                (i!=nushiftmod3+9)) {
              rxF_ext[j]=rxF[i];
              //                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
              dl_ch0_ext[j]=dl_ch0[i];
              dl_ch1_ext[j++]=dl_ch1[i];
            }
          }

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

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


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

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

  if (symbol==0)
    pilots=1;

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  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) {
    //if (frame_parms->mode1_flag && aatx>0) break; //if mode1_flag is set then there is only one stream to extract, independent of nb_antenna_ports_eNB
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    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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#if defined(__x86_64__) || defined(__i386__)
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      dl_ch128          = (__m128i *)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
      rxdataF128        = (__m128i *)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12];
      rxdataF_comp128   = (__m128i *)&rxdataF_comp[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];

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#elif defined(__arm__)

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

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

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

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

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

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

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

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

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

#endif
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      }
    }
  }
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  if (rho) {

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    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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#if defined(__x86_64__) || defined(__i386__)
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      rho128        = (__m128i *)&rho[aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch128      = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch128_2    = (__m128i *)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];

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

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

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

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

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


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

        rho128[2] = _mm_packs_epi32(mmtmpPD2,mmtmpPD3);
        //print_shorts("rx:",dl_ch128_2+2);
        //print_shorts("ch:",dl_ch128+2);
        //print_shorts("pack:",rho128+2);

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

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#elif defined(__arm_)


#endif
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      }
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    }

  }

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#if defined(__x86_64__) || defined(__i386__)
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  _mm_empty();
  _m_empty();
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#endif
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}
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void pdcch_detection_mrc(LTE_DL_FRAME_PARMS *frame_parms,
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                         int32_t **rxdataF_comp,
                         uint8_t symbol)
{
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  uint8_t aatx;
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1594
#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++) {
1603
#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__)
1613
        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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1634
  uint8_t rb,re,jj,ii;
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  jj=0;
  ii=0;

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

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

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


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

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

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}

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int32_t avgP[4];
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int32_t rx_pdcch(PHY_VARS_UE *ue,
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                 uint32_t frame,
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                 uint8_t subframe,
                 uint8_t eNB_id,
                 MIMO_mode_t mimo_mode,
                 uint32_t high_speed_flag,
                 uint8_t is_secondary_ue)
{
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  LTE_UE_COMMON *common_vars      = &ue->common_vars;
  LTE_DL_FRAME_PARMS *frame_parms = &ue->frame_parms;
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  LTE_UE_PDCCH **pdcch_vars       = ue->pdcch_vars[subframe%RX_NB_TH];
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1697

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  uint8_t log2_maxh,aatx,aarx;
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#ifdef MU_RECEIVER
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  uint8_t eNB_id_i=eNB_id+1;//add 1 to eNB_id to separate from wanted signal, chosen as the B/F'd pilots from the SeNB are shifted by 1
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#endif
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  int32_t avgs,s;
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  uint8_t n_pdcch_symbols = 3; //pdcch_vars[eNB_id]->num_pdcch_symbols;
1704
  uint8_t mi = get_mi(frame_parms,subframe);
1705

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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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  for (s=0; s<n_pdcch_symbols; s++) {
    if (is_secondary_ue == 1) {
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      pdcch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[subframe%RX_NB_TH].rxdataF,
                               common_vars->common_vars_rx_data_per_thread[subframe%RX_NB_TH].dl_ch_estimates[eNB_id+1], //add 1 to eNB_id to compensate for the shifted B/F'd pilots from the SeNB
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                               pdcch_vars[eNB_id]->rxdataF_ext,
                               pdcch_vars[eNB_id]->dl_ch_estimates_ext,
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                               s,
                               high_speed_flag,
                               frame_parms);
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#ifdef MU_RECEIVER
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      pdcch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[subframe%RX_NB_TH].rxdataF,
                               common_vars->common_vars_rx_data_per_thread[subframe%RX_NB_TH].dl_ch_estimates[eNB_id_i - 1],//subtract 1 to eNB_id_i to compensate for the non-shifted pilots from the PeNB
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                               pdcch_vars[eNB_id_i]->rxdataF_ext,//shift by two to simulate transmission from a second antenna
                               pdcch_vars[eNB_id_i]->dl_ch_estimates_ext,//shift by two to simulate transmission from a second antenna
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                               s,
                               high_speed_flag,
                               frame_parms);
1725
#endif //MU_RECEIVER
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1726
    } else if (frame_parms->nb_antenna_ports_eNB>1) {
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      pdcch_extract_rbs_dual(common_vars->common_vars_rx_data_per_thread[subframe%RX_NB_TH].rxdataF,
                             common_vars->common_vars_rx_data_per_thread[subframe%RX_NB_TH].dl_ch_estimates[eNB_id],
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                             pdcch_vars[eNB_id]->rxdataF_ext,
                             pdcch_vars[eNB_id]->dl_ch_estimates_ext,
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                             s,
                             high_speed_flag,
                             frame_parms);
    } else {
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      pdcch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[subframe%RX_NB_TH].rxdataF,
                               common_vars->common_vars_rx_data_per_thread[subframe%RX_NB_TH].dl_ch_estimates[eNB_id],
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                               pdcch_vars[eNB_id]->rxdataF_ext,
                               pdcch_vars[eNB_id]->dl_ch_estimates_ext,
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                               s,
                               high_speed_flag,
                               frame_parms);
    }
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  }
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  pdcch_channel_level(pdcch_vars[eNB_id]->dl_ch_estimates_ext,
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                      frame_parms,
                      avgP,
                      frame_parms->N_RB_DL);
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  avgs = 0;
1751

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1752
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++)
1753
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++)
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      avgs = cmax(avgs,avgP[(aarx<<1)+aatx]);
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1756
  log2_maxh = (log2_approx(avgs)/2) + 5;  //+frame_parms->nb_antennas_rx;
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1757
#ifdef UE_DEBUG_TRACE
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1758
  LOG_D(PHY,"subframe %d: pdcch log2_maxh = %d (%d,%d)\n",subframe,log2_maxh,avgP[0],avgs);
1759
#endif
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#if T_TRACER
  T(T_UE_PHY_PDCCH_ENERGY, T_INT(eNB_id),  T_INT(0), T_INT(frame%1024), T_INT(subframe),
                           T_INT(avgP[0]), T_INT(avgP[1]),    T_INT(avgP[2]),             T_INT(avgP[3]));
#endif
1765
  for (s=0; s<n_pdcch_symbols; s++) {
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    pdcch_channel_compensation(pdcch_vars[eNB_id]->rxdataF_ext,
                               pdcch_vars[eNB_id]->dl_ch_estimates_ext,
                               pdcch_vars[eNB_id]->rxdataF_comp,
                               (aatx>1) ? pdcch_vars[eNB_id]->rho : NULL,
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                               frame_parms,
                               s,
                               log2_maxh); // log2_maxh+I0_shift
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#ifdef DEBUG_PHY
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1777
    if (subframe==5)
1778
      write_output("rxF_comp_d.m","rxF_c_d",&pdcch_vars[eNB_id]->rxdataF_comp[0][s*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
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#endif

#ifdef MU_RECEIVER
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    if (is_secondary_ue) {
      //get MF output for interfering stream
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      pdcch_channel_compensation(pdcch_vars[eNB_id_i]->rxdataF_ext,
                                 pdcch_vars[eNB_id_i]->dl_ch_estimates_ext,
                                 pdcch_vars[eNB_id_i]->rxdataF_comp,
                                 (aatx>1) ? pdcch_vars[eNB_id_i]->rho : NULL,
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                                 frame_parms,
                                 s,
                                 log2_maxh); // log2_maxh+I0_shift
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#ifdef DEBUG_PHY
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      write_output("rxF_comp_i.m","rxF_c_i",&pdcch_vars[eNB_id_i]->rxdataF_comp[0][s*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
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#endif
      pdcch_dual_stream_correlation(frame_parms,
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                                    s,
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                                    pdcch_vars[eNB_id]->dl_ch_estimates_ext,
                                    pdcch_vars[eNB_id_i]->dl_ch_estimates_ext,
                                    pdcch_vars[eNB_id]->dl_ch_rho_ext,
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                                    log2_maxh);
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    }
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1804
#endif //MU_RECEIVER
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    if (frame_parms->nb_antennas_rx > 1) {
#ifdef MU_RECEIVER
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1810
      if (is_secondary_ue) {
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        pdcch_detection_mrc_i(frame_parms,
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                              pdcch_vars[eNB_id]->rxdataF_comp,
                              pdcch_vars[eNB_id_i]->rxdataF_comp,
                              pdcch_vars[eNB_id]->rho,
                              pdcch_vars[eNB_id]->dl_ch_rho_ext,
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                              s);
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#ifdef DEBUG_PHY
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        write_output("rxF_comp_d.m","rxF_c_d",&pdcch_vars[eNB_id]->rxdataF_comp[0][s*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
        write_output("rxF_comp_i.m","rxF_c_i",&pdcch_vars[eNB_id_i]->rxdataF_comp[0][s*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
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#endif
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      } else
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#endif //MU_RECEIVER
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        pdcch_detection_mrc(frame_parms,
1824
                            pdcch_vars[eNB_id]->rxdataF_comp,
1825 1826
                            s);

1827
    }
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    if (mimo_mode == SISO)
1830
      pdcch_siso(frame_parms,pdcch_vars[eNB_id]->rxdataF_comp,s);
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    else
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      pdcch_alamouti(frame_parms,pdcch_vars[eNB_id]->rxdataF_comp,s);
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1835
#ifdef MU_RECEIVER
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1837 1838
    if (is_secondary_ue) {
      pdcch_qpsk_qpsk_llr(frame_parms,
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                          pdcch_vars[eNB_id]->rxdataF_comp,
                          pdcch_vars[eNB_id_i]->rxdataF_comp,
                          pdcch_vars[eNB_id]->dl_ch_rho_ext,
                          pdcch_vars[eNB_id]->llr16, //subsequent function require 16 bit llr, but output must be 8 bit (actually clipped to 4, because of the Viterbi decoder)
                          pdcch_vars[eNB_id]->llr,
1844
                          s);
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1845
      /*
1846
      #ifdef DEBUG_PHY
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1847
      if (subframe==5) {
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      write_output("llr8_seq.m","llr8",&pdcch_vars[eNB_id]->llr[s*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,4);
      write_output("llr16_seq.m","llr16",&pdcch_vars[eNB_id]->llr16[s*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,4);
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      }
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1851
      #endif*/
1852
    } else {
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#endif //MU_RECEIVER
      pdcch_llr(frame_parms,
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                pdcch_vars[eNB_id]->rxdataF_comp,
                (char *)pdcch_vars[eNB_id]->llr,
1857
                s);
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      /*#ifdef DEBUG_PHY
1859
      write_output("llr8_seq.m","llr8",&pdcch_vars[eNB_id]->llr[s*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,4);
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1860
      #endif*/
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#ifdef MU_RECEIVER
    }
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#endif //MU_RECEIVER

  }

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

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1882 1883 1884
  if (n_pdcch_symbols>3)
    n_pdcch_symbols=1;

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1886 1887
#ifdef DEBUG_DCI_DECODING

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

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  pdcch_demapping(pdcch_vars[eNB_id]->llr,
                  pdcch_vars[eNB_id]->wbar,
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                  frame_parms,
                  n_pdcch_symbols,
                  get_mi(frame_parms,subframe));
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  pdcch_deinterleaving(frame_parms,
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                       (uint16_t*)pdcch_vars[eNB_id]->e_rx,
                       pdcch_vars[eNB_id]->wbar,
1900 1901 1902
                       n_pdcch_symbols,
                       mi);

1903
  pdcch_unscrambling(frame_parms,
1904
                     subframe,
1905
                     pdcch_vars[eNB_id]->e_rx,
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                     get_nCCE(n_pdcch_symbols,frame_parms,mi)*72);

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


void pdcch_scrambling(LTE_DL_FRAME_PARMS *frame_parms,
1915 1916 1917 1918
                      uint8_t subframe,
                      uint8_t *e,
                      uint32_t length)
{
1919
  int i;
1920 1921
  uint8_t reset;
  uint32_t x1, x2, s=0;
1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933

  reset = 1;
  // x1 is set in lte_gold_generic

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

  for (i=0; i<length; i++) {
    if ((i&0x1f)==0) {
      s = lte_gold_generic(&x1, &x2, reset);
      //printf("lte_gold[%d]=%x\n",i,s);
      reset = 0;
    }
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1935 1936 1937 1938 1939 1940 1941
    //    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,
1942 1943 1944 1945
                        uint8_t subframe,
                        int8_t* llr,
                        uint32_t length)
{
1946 1947

  int i;
1948 1949
  uint8_t reset;
  uint32_t x1, x2, s=0;
1950 1951 1952 1953 1954 1955 1956

  reset = 1;
  // x1 is set in first call to lte_gold_generic

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

  for (i=0; i<length; i++) {
1957
    if ((i&0x1f)==0) {
1958
      s = lte_gold_generic(&x1, &x2, reset);
1959
      //      printf("lte_gold[%d]=%x\n",i,s);
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      reset = 0;
    }
1962

1963 1964
    
    //    printf("unscrambling %d : e %d, c %d => ",i,llr[i],((s>>(i&0x1f))&1));
1965 1966
    if (((s>>(i%32))&1)==0)
      llr[i] = -llr[i];
1967
    //    printf("%d\n",llr[i]);
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  }
}
1971

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1973
uint8_t get_num_pdcch_symbols(uint8_t num_dci,
1974 1975 1976 1977
                              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;
1982 1983 1984
  uint16_t CCE_max_used_index = 0;
  uint16_t firstCCE_max = dci_alloc[0].firstCCE;
  uint8_t  L = dci_alloc[0].L;
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  // check pdcch duration imposed by PHICH duration (Section 6.9 of 36-211)
  if (frame_parms->Ncp==1) { // extended prefix
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    if ((frame_parms->frame_type == TDD) &&
        ((frame_parms->tdd_config<3)||(frame_parms->tdd_config==6)) &&
        ((subframe==1) || (subframe==6))) // subframes 1 and 6 (S-subframes) for 5ms switching periodicity are 2 symbols
1991 1992 1993 1994 1995 1996 1997
      nCCEmin = 2;
    else {   // 10ms switching periodicity is always 3 symbols, any DL-only subframe is 3 symbols
      nCCEmin = 3;
    }
  }

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

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

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

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

2033

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

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

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

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

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  int nushiftmod3 = frame_parms->nushift%3;

  int Msymb2;
  int split_flag=0;

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

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

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

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

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

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

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  default:
    Msymb2 = Msymb>>2;
    break;
  }

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

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

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

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

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

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

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

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

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

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

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

2175

2176

2177

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

  e_ptr = e;
2185

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


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

2193

2194
    for (i=0; i<Msymb2; i++) {
2195
      
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      //((int16_t*)(&(y[0][i])))[0] = (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
      //((int16_t*)(&(y[1][i])))[0] = (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
      ((int16_t*)(&(y[0][i])))[0] = (*e_ptr == 2) ? 0 : (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
      ((int16_t*)(&(y[1][i])))[0] = (*e_ptr == 2) ? 0 : (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
2200
      e_ptr++;
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      //((int16_t*)(&(y[0][i])))[1] = (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
      //((int16_t*)(&(y[1][i])))[1] = (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
      ((int16_t*)(&(y[0][i])))[1] = (*e_ptr == 2) ? 0 : (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
      ((int16_t*)(&(y[1][i])))[1] = (*e_ptr == 2) ? 0 : (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
2205 2206 2207

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

2210

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

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

2222
      // second antenna position n -> -x1*
2223
      ((int16_t*)&y[1][i])[0] = (*e_ptr==2) ? 0 : (*e_ptr == 1) ? gain_lin_QPSK : -gain_lin_QPSK;
2224
      e_ptr++;
2225
      ((int16_t*)&y[1][i])[1] = (*e_ptr==2) ? 0 : (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
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      e_ptr++;

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

    }
2235 2236 2237 2238
  }


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

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

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

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

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


2258

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

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

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

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

          kprime_mod12 = kprime%12;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

            }
          }
        }
2356

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

2361
    } //lprime loop
2362

2363
    re_offset++;
2364

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

2369 2370 2371 2372
  return(num_pdcch_symbols);
}

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

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

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

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

2403
  for (n_dci =0 ;
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2404
       n_dci < (eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].num_ue_spec_dci+ eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].num_common_dci);
2405
       n_dci++) {
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    if (dci_alloc[n_dci].format > 0) { // exclude the uplink dci

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

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

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      }
    }
2438

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    n_dci_dl++;
  }
2441

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

2450

2451
void dci_decoding(uint8_t DCI_LENGTH,
2452 2453 2454 2455
                  uint8_t aggregation_level,
                  int8_t *e,
                  uint8_t *decoded_output)
{
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  uint8_t dummy_w_rx[3*(MAX_DCI_SIZE_BITS+16+64)];
  int8_t w_rx[3*(MAX_DCI_SIZE_BITS+16+32)],d_rx[96+(3*(MAX_DCI_SIZE_BITS+16))];

2460
  uint16_t RCC;
2461

2462 2463
  uint16_t D=(DCI_LENGTH+16+64);
  uint16_t coded_bits;
2464
#ifdef DEBUG_DCI_DECODING
2465
  int32_t i;
2466
#endif
2467

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

  coded_bits = 72 * (1<<aggregation_level);

#ifdef DEBUG_DCI_DECODING
2476
  LOG_I(PHY," Doing DCI decoding for %d bits, DCI_LENGTH %d,coded_bits %d, e %p\n",3*(DCI_LENGTH+16),DCI_LENGTH,coded_bits,e);
2477
#endif
2478

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

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

  lte_rate_matching_cc_rx(RCC,coded_bits,w_rx,dummy_w_rx,e);
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  sub_block_deinterleaving_cc((uint32_t)(DCI_LENGTH+16),
                              &d_rx[96],
                              &w_rx[0]);

2496
#ifdef DEBUG_DCI_DECODING
2497 2498

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

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

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

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


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

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uint16_t get_nCCE(uint8_t num_pdcch_symbols,LTE_DL_FRAME_PARMS *frame_parms,uint8_t mi)
{
2521 2522 2523
  return(get_nquad(num_pdcch_symbols,frame_parms,mi)/9);
}

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    return(-1);

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

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

    Yk = Yk % (nCCE/L);


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

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

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


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

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

      for (l=0; l<L; l++) {
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2656 2657
        int cce = (((Yk+m)%(nCCE/L))*L) + l;
        if (cce >= nCCE || CCE_table[cce] == 1) {
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          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);
  }
}


2676
void dci_decoding_procedure0(LTE_UE_PDCCH **pdcch_vars,
2677
			     int do_common,
2678
			     dci_detect_mode_t mode,
2679
			     uint8_t subframe,
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                             DCI_ALLOC_t *dci_alloc,
                             int16_t eNB_id,
                             LTE_DL_FRAME_PARMS *frame_parms,
                             uint8_t mi,
                             uint16_t si_rnti,
                             uint16_t ra_rnti,
2686
                             uint16_t p_rnti,
2687 2688
                             uint8_t L,
                             uint8_t format_si,
2689
                             uint8_t format_p,
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                             uint8_t format_ra,
                             uint8_t format_c,
                             uint8_t sizeof_bits,
                             uint8_t sizeof_bytes,
                             uint8_t *dci_cnt,
                             uint8_t *format0_found,
                             uint8_t *format_c_found,
                             uint32_t *CCEmap0,
                             uint32_t *CCEmap1,
                             uint32_t *CCEmap2)
{

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

2708
  nCCE = get_nCCE(pdcch_vars[eNB_id]->num_pdcch_symbols,frame_parms,mi);
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2710 2711
  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));
2712
    return;
2713
  }
2714

2715 2716
  if (nCCE<L2) {
    LOG_D(PHY,"skip DCI decoding: nCCE=%d < L2=%d\n", nCCE, L2);
2717
    return;
2718
  }
2719

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

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  if (do_common == 1) {
    nb_candidates = (L2==4) ? 4 : 2;
    Yk=0;
2728
  } else {
2729 2730 2731
    // Find first available in ue specific search space
    // according to procedure in Section 9.1.1 of 36.213 (v. 8.6)
    // compute Yk
2732
    Yk = (unsigned int)pdcch_vars[eNB_id]->crnti;
2733

2734
    for (i=0; i<=subframe; i++)
2735 2736 2737 2738 2739 2740 2741 2742 2743
      Yk = (Yk*39827)%65537;

    Yk = Yk % (nCCE/L2);

    switch (L2) {
    case 1:
    case 2:
      nb_candidates = 6;
      break;
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    case 4:
    case 8:
      nb_candidates = 2;
      break;
2749

2750 2751 2752
    default:
      DevParam(L2, do_common, eNB_id);
      break;
2753
    }
2754
  }
2755

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  /*  for (CCEind=0;
       CCEind<nCCE2;
       CCEind+=(1<<L)) {*/

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

2763
  for (m=0; m<nb_candidates; m++) {
2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774

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

    if (CCEind<32)
      CCEmap = CCEmap0;
    else if (CCEind<64)
      CCEmap = CCEmap1;
    else if (CCEind<96)
      CCEmap = CCEmap2;
    else {
      LOG_E(PHY,"Illegal CCEind %d (Yk %d, m %d, nCCE %d, L2 %d\n",CCEind,Yk,m,nCCE,L2);
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2775
      mac_xface->macphy_exit("Illegal CCEind\n");
2776
      return; // not reached
2777
    }
2778

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    switch (L2) {
    case 1:
      CCEmap_mask = (1<<(CCEind&0x1f));
      break;
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    case 2:
      CCEmap_mask = (3<<(CCEind&0x1f));
      break;
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    case 4:
      CCEmap_mask = (0xf<<(CCEind&0x1f));
      break;
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    case 8:
      CCEmap_mask = (0xff<<(CCEind&0x1f));
      break;
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    default:
      LOG_E( PHY, "Illegal L2 value %d\n", L2 );
      mac_xface->macphy_exit( "Illegal L2\n" );
      return; // not reached
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    }

2802
    CCEmap_cand = (*CCEmap)&CCEmap_mask;
2803 2804

    // CCE is not allocated yet
2805 2806 2807

    if (CCEmap_cand == 0) {
#ifdef DEBUG_DCI_DECODING
2808 2809

      if (do_common == 1)
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        LOG_I(PHY,"[DCI search nPdcch %d - common] Attempting candidate %d Aggregation Level %d DCI length %d at CCE %d/%d (CCEmap %x,CCEmap_cand %x)\n",
                pdcch_vars[eNB_id]->num_pdcch_symbols,m,L2,sizeof_bits,CCEind,nCCE,*CCEmap,CCEmap_mask);
2812
      else
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        LOG_I(PHY,"[DCI search nPdcch %d - ue spec] Attempting candidate %d Aggregation Level %d DCI length %d at CCE %d/%d (CCEmap %x,CCEmap_cand %x)\n",
                pdcch_vars[eNB_id]->num_pdcch_symbols,m,L2,sizeof_bits,CCEind,nCCE,*CCEmap,CCEmap_mask);
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#endif

      dci_decoding(sizeof_bits,
                   L,
2820
                   &pdcch_vars[eNB_id]->e_rx[CCEind*72],
2821
                   &dci_decoded_output[subframe%RX_NB_TH][0]);
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      /*
        for (i=0;i<3+(sizeof_bits>>3);i++)
        printf("dci_decoded_output[%d] => %x\n",i,dci_decoded_output[i]);
      */
2826
      crc = (crc16(&dci_decoded_output[subframe%RX_NB_TH][0],sizeof_bits)>>16) ^ extract_crc(&dci_decoded_output[subframe%RX_NB_TH][0],sizeof_bits);
2827
#ifdef DEBUG_DCI_DECODING
2828
      printf("crc =>%x\n",crc);
2829
#endif
2830 2831

      if (((L>1) && ((crc == si_rnti)||
2832
		     (crc == p_rnti)||
2833
                     (crc == ra_rnti)))||
2834
          (crc == pdcch_vars[eNB_id]->crnti))   {
2835 2836 2837
        dci_alloc[*dci_cnt].dci_length = sizeof_bits;
        dci_alloc[*dci_cnt].rnti       = crc;
        dci_alloc[*dci_cnt].L          = L;
2838
        dci_alloc[*dci_cnt].firstCCE   = CCEind;
2839

hbilel's avatar
hbilel committed
2840
        //printf("DCI FOUND !!! crc =>%x,  sizeof_bits %d, sizeof_bytes %d \n",crc, sizeof_bits, sizeof_bytes);
2841
        if (sizeof_bytes<=4) {
2842 2843 2844 2845
          dci_alloc[*dci_cnt].dci_pdu[3] = dci_decoded_output[subframe%RX_NB_TH][0];
          dci_alloc[*dci_cnt].dci_pdu[2] = dci_decoded_output[subframe%RX_NB_TH][1];
          dci_alloc[*dci_cnt].dci_pdu[1] = dci_decoded_output[subframe%RX_NB_TH][2];
          dci_alloc[*dci_cnt].dci_pdu[0] = dci_decoded_output[subframe%RX_NB_TH][3];
2846
#ifdef DEBUG_DCI_DECODING
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          printf("DCI => %x,%x,%x,%x\n",dci_decoded_output[subframe%RX_NB_TH][0],
                  dci_decoded_output[subframe%RX_NB_TH][1],
                  dci_decoded_output[subframe%RX_NB_TH][2],
                  dci_decoded_output[subframe%RX_NB_TH][3]);
2851
#endif
2852
        } else {
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          dci_alloc[*dci_cnt].dci_pdu[7] = dci_decoded_output[subframe%RX_NB_TH][0];
          dci_alloc[*dci_cnt].dci_pdu[6] = dci_decoded_output[subframe%RX_NB_TH][1];
          dci_alloc[*dci_cnt].dci_pdu[5] = dci_decoded_output[subframe%RX_NB_TH][2];
          dci_alloc[*dci_cnt].dci_pdu[4] = dci_decoded_output[subframe%RX_NB_TH][3];
          dci_alloc[*dci_cnt].dci_pdu[3] = dci_decoded_output[subframe%RX_NB_TH][4];
          dci_alloc[*dci_cnt].dci_pdu[2] = dci_decoded_output[subframe%RX_NB_TH][5];
          dci_alloc[*dci_cnt].dci_pdu[1] = dci_decoded_output[subframe%RX_NB_TH][6];
          dci_alloc[*dci_cnt].dci_pdu[0] = dci_decoded_output[subframe%RX_NB_TH][7];
2861
#ifdef DEBUG_DCI_DECODING
2862
          printf("DCI => %x,%x,%x,%x,%x,%x,%x,%x\n",
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              dci_decoded_output[subframe%RX_NB_TH][0],dci_decoded_output[subframe%RX_NB_TH][1],dci_decoded_output[subframe%RX_NB_TH][2],dci_decoded_output[subframe%RX_NB_TH][3],
              dci_decoded_output[subframe%RX_NB_TH][4],dci_decoded_output[subframe%RX_NB_TH][5],dci_decoded_output[subframe%RX_NB_TH][6],dci_decoded_output[subframe%RX_NB_TH][7]);
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#endif
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        }

        if (crc==si_rnti) {
          dci_alloc[*dci_cnt].format     = format_si;
          *dci_cnt = *dci_cnt+1;
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        } else if (crc==p_rnti) {
          dci_alloc[*dci_cnt].format     = format_p;
          *dci_cnt = *dci_cnt+1;
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        } else if (crc==ra_rnti) {
          dci_alloc[*dci_cnt].format     = format_ra;
          // store first nCCE of group for PUCCH transmission of ACK/NAK
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          pdcch_vars[eNB_id]->nCCE[subframe]=CCEind;
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          *dci_cnt = *dci_cnt+1;
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        } else if (crc==pdcch_vars[eNB_id]->crnti) {
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          if ((mode&UL_DCI)&&(format_c == format0)&&((dci_decoded_output[subframe%RX_NB_TH][0]&0x80)==0)) {// check if pdu is format 0 or 1A
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            if (*format0_found == 0) {
              dci_alloc[*dci_cnt].format     = format0;
              *format0_found = 1;
              *dci_cnt = *dci_cnt+1;
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              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_D(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;
        }

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#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)\n",
              *dci_cnt,crc,1<<L,sizeof_bits,dci_format_strings[dci_alloc[*dci_cnt-1].format],CCEind,*CCEmap);
        dump_dci(frame_parms,&dci_alloc[*dci_cnt-1]);

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#endif
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        //  if (crc==pdcch_vars[eNB_id]->crnti)
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        //    return;
      } // rnti match
    }  // CCEmap_cand == 0
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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;
  LTE_UE_PDCCH **pdcch_vars = ue->pdcch_vars[subframe%RX_NB_TH];
  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 format1A_size_bits=0,format1A_size_bytes=0;
  uint8_t format1C_size_bits=0,format1C_size_bytes=0;
  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;
  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) {
      format1A_size_bits  = sizeof_DCI1A_1_5MHz_TDD_1_6_t;
      format1A_size_bytes = sizeof(DCI1A_1_5MHz_TDD_1_6_t);
      format1C_size_bits  = sizeof_DCI1C_1_5MHz_t;
      format1C_size_bytes = sizeof(DCI1C_1_5MHz_t);
      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);

      if (frame_parms->nb_antenna_ports_eNB == 2) {
        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);
      } else if (frame_parms->nb_antenna_ports_eNB == 4) {
        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);
      }
    } else {
      format1A_size_bits  = sizeof_DCI1A_1_5MHz_FDD_t;
      format1A_size_bytes = sizeof(DCI1A_1_5MHz_FDD_t);
      format1C_size_bits  = sizeof_DCI1C_1_5MHz_t;
      format1C_size_bytes = sizeof(DCI1C_1_5MHz_t);
      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);

      if (frame_parms->nb_antenna_ports_eNB == 2) {
        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);
      } else if (frame_parms->nb_antenna_ports_eNB == 4) {
        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);
      }
    }

    break;

  case 25:
  default:
    if (frame_type == TDD) {
      format1A_size_bits  = sizeof_DCI1A_5MHz_TDD_1_6_t;
      format1A_size_bytes = sizeof(DCI1A_5MHz_TDD_1_6_t);
      format1C_size_bits  = sizeof_DCI1C_5MHz_t;
      format1C_size_bytes = sizeof(DCI1C_5MHz_t);
      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);

      if (frame_parms->nb_antenna_ports_eNB == 2) {
        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);
      } else if (frame_parms->nb_antenna_ports_eNB == 4) {
        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);
      }
    } else {
      format1A_size_bits  = sizeof_DCI1A_5MHz_FDD_t;
      format1A_size_bytes = sizeof(DCI1A_5MHz_FDD_t);
      format1C_size_bits  = sizeof_DCI1C_5MHz_t;
      format1C_size_bytes = sizeof(DCI1C_5MHz_t);
      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);

      if (frame_parms->nb_antenna_ports_eNB == 2) {
        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);
      } else if (frame_parms->nb_antenna_ports_eNB == 4) {
        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);
      }
    }

    break;

  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);
      format1C_size_bits  = sizeof_DCI1C_10MHz_t;
      format1C_size_bytes = sizeof(DCI1C_10MHz_t);
      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);

      if (frame_parms->nb_antenna_ports_eNB == 2) {
        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);
      } else if (frame_parms->nb_antenna_ports_eNB == 4) {
        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);
      }
    } else {
      format1A_size_bits  = sizeof_DCI1A_10MHz_FDD_t;
      format1A_size_bytes = sizeof(DCI1A_10MHz_FDD_t);
      format1C_size_bits  = sizeof_DCI1C_10MHz_t;
      format1C_size_bytes = sizeof(DCI1C_10MHz_t);
      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);

      if (frame_parms->nb_antenna_ports_eNB == 2) {
        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);
      } else if (frame_parms->nb_antenna_ports_eNB == 4) {
        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);
      }
    }

    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);
      format1C_size_bits  = sizeof_DCI1C_20MHz_t;
      format1C_size_bytes = sizeof(DCI1C_20MHz_t);
      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);

      if (frame_parms->nb_antenna_ports_eNB == 2) {
        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);
      } else if (frame_parms->nb_antenna_ports_eNB == 4) {
        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);
      }
    } else {
      format1A_size_bits  = sizeof_DCI1A_20MHz_FDD_t;
      format1A_size_bytes = sizeof(DCI1A_20MHz_FDD_t);
      format1C_size_bits  = sizeof_DCI1C_20MHz_t;
      format1C_size_bytes = sizeof(DCI1C_20MHz_t);
      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);

      if (frame_parms->nb_antenna_ports_eNB == 2) {
        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);
      } else if (frame_parms->nb_antenna_ports_eNB == 4) {
        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);
      }
    }

    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,
                          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,
                                  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);

}

3243
uint16_t dci_decoding_procedure(PHY_VARS_UE *ue,
3244 3245 3246 3247 3248 3249
                                DCI_ALLOC_t *dci_alloc,
                                int do_common,
                                int16_t eNB_id,
                                uint8_t subframe)
{

3250 3251
  uint8_t  dci_cnt=0,old_dci_cnt=0;
  uint32_t CCEmap0=0,CCEmap1=0,CCEmap2=0;
3252
  LTE_UE_PDCCH **pdcch_vars = ue->pdcch_vars[subframe%RX_NB_TH];
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  LTE_DL_FRAME_PARMS *frame_parms  = &ue->frame_parms;
  uint8_t mi = get_mi(&ue->frame_parms,subframe);
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  uint16_t ra_rnti=99;
  uint8_t format0_found=0,format_c_found=0;
3257
  uint8_t tmode = ue->transmission_mode[eNB_id];
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  uint8_t frame_type = frame_parms->frame_type;
3259
  uint8_t format1A_size_bits=0,format1A_size_bytes=0;
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  uint8_t format1C_size_bits=0,format1C_size_bytes=0;
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  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;
3265
  dci_detect_mode_t mode = dci_detect_mode_select(&ue->frame_parms,subframe);
3266 3267 3268 3269 3270 3271

  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);
3272 3273
      format1C_size_bits  = sizeof_DCI1C_1_5MHz_t;
      format1C_size_bytes = sizeof(DCI1C_1_5MHz_t);
3274 3275 3276 3277
      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);
3278

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      if (frame_parms->nb_antenna_ports_eNB == 2) {
3280 3281 3282 3283
        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) {
3285 3286 3287 3288
        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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3289
      }
3290
    } else {
3291 3292
      format1A_size_bits  = sizeof_DCI1A_1_5MHz_FDD_t;
      format1A_size_bytes = sizeof(DCI1A_1_5MHz_FDD_t);
3293 3294
      format1C_size_bits  = sizeof_DCI1C_1_5MHz_t;
      format1C_size_bytes = sizeof(DCI1C_1_5MHz_t);
3295 3296 3297 3298
      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);
3299

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      if (frame_parms->nb_antenna_ports_eNB == 2) {
3301 3302 3303 3304
        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) {
3306 3307 3308 3309
        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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      }
3311
    }
3312

3313
    break;
3314

3315
  case 25:
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3316
  default:
3317 3318 3319
    if (frame_type == TDD) {
      format1A_size_bits  = sizeof_DCI1A_5MHz_TDD_1_6_t;
      format1A_size_bytes = sizeof(DCI1A_5MHz_TDD_1_6_t);
3320 3321
      format1C_size_bits  = sizeof_DCI1C_5MHz_t;
      format1C_size_bytes = sizeof(DCI1C_5MHz_t);
3322 3323 3324 3325
      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);
3326

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      if (frame_parms->nb_antenna_ports_eNB == 2) {
3328 3329 3330 3331
        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) {
3333 3334 3335 3336
        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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      }
3338
    } else {
3339 3340
      format1A_size_bits  = sizeof_DCI1A_5MHz_FDD_t;
      format1A_size_bytes = sizeof(DCI1A_5MHz_FDD_t);
3341 3342
      format1C_size_bits  = sizeof_DCI1C_5MHz_t;
      format1C_size_bytes = sizeof(DCI1C_5MHz_t);
3343 3344 3345 3346
      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);
3347

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      if (frame_parms->nb_antenna_ports_eNB == 2) {
3349 3350 3351 3352
        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) {
3354 3355 3356 3357
        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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      }
3359
    }
3360

3361
    break;
3362

3363 3364 3365 3366
  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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3367 3368
      format1C_size_bits  = sizeof_DCI1C_10MHz_t;
      format1C_size_bytes = sizeof(DCI1C_10MHz_t);
3369 3370 3371 3372
      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);
3373

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      if (frame_parms->nb_antenna_ports_eNB == 2) {
3375 3376 3377 3378
        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) {
3380 3381 3382 3383
        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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      }
3385
    } else {
3386 3387
      format1A_size_bits  = sizeof_DCI1A_10MHz_FDD_t;
      format1A_size_bytes = sizeof(DCI1A_10MHz_FDD_t);
3388 3389
      format1C_size_bits  = sizeof_DCI1C_10MHz_t;
      format1C_size_bytes = sizeof(DCI1C_10MHz_t);
3390 3391 3392 3393
      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);
3394

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      if (frame_parms->nb_antenna_ports_eNB == 2) {
3396 3397 3398 3399
        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) {
3401 3402 3403 3404
        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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      }
3406
    }
3407

3408 3409 3410 3411 3412 3413
    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);
3414 3415
      format1C_size_bits  = sizeof_DCI1C_20MHz_t;
      format1C_size_bytes = sizeof(DCI1C_20MHz_t);
3416 3417 3418 3419
      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);
3420

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3421
      if (frame_parms->nb_antenna_ports_eNB == 2) {
3422 3423 3424 3425
        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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      } else if (frame_parms->nb_antenna_ports_eNB == 4) {
3427 3428 3429 3430
        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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3431
      }
3432
    } else {
3433 3434
      format1A_size_bits  = sizeof_DCI1A_20MHz_FDD_t;
      format1A_size_bytes = sizeof(DCI1A_20MHz_FDD_t);
3435 3436
      format1C_size_bits  = sizeof_DCI1C_20MHz_t;
      format1C_size_bytes = sizeof(DCI1C_20MHz_t);
3437 3438 3439 3440
      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);
3441

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3442
      if (frame_parms->nb_antenna_ports_eNB == 2) {
3443 3444 3445 3446
        format2_size_bits  = sizeof_DCI2_20MHz_2A_FDD_t;
        format2_size_bytes = sizeof(DCI2_20MHz_2A_FDD_t);
        format2A_size_bits  = sizeof_DCI2A_20MHz_2A_FDD_t;
        format2A_size_bytes = sizeof(DCI2A_20MHz_2A_FDD_t);
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      } else if (frame_parms->nb_antenna_ports_eNB == 4) {
3448 3449 3450 3451
        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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3452
      }
3453
    }
3454

3455 3456 3457
    break;
  }

3458
  if (do_common == 1) {
3459 3460 3461
#ifdef DEBUG_DCI_DECODING
    printf("[DCI search] doing common search/format0 aggregation 4\n");
#endif
3462

3463 3464
    if (ue->prach_resources[eNB_id])
      ra_rnti = ue->prach_resources[eNB_id]->ra_RNTI;
3465

3466
    // First check common search spaces at aggregation 4 (SI_RNTI, P_RNTI and RA_RNTI format 0/1A),
3467
    // and UE_SPEC format0 (PUSCH) too while we're at it
3468
    dci_decoding_procedure0(pdcch_vars,1,mode,subframe,
3469 3470 3471 3472
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3473
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0) ,
3474
                            ra_rnti,
3475
			    P_RNTI,
3476 3477 3478
                            2,
                            format1A,
                            format1A,
3479
                            format1A,
3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491
                            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)))
3492
      return(dci_cnt);
3493

3494
    // Now check common search spaces at aggregation 4 (SI_RNTI,P_RNTI and RA_RNTI and C-RNTI format 1C),
3495
    // and UE_SPEC format0 (PUSCH) too while we're at it
3496
    dci_decoding_procedure0(pdcch_vars,1,mode,subframe,
3497 3498 3499 3500
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3501
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3502
                            ra_rnti,
3503
			    P_RNTI,
3504 3505 3506 3507
                            2,
                            format1C,
                            format1C,
                            format1C,
3508
                            format1C,
3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521
                            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);

3522
    // Now check common search spaces at aggregation 8 (SI_RNTI,P_RNTI and RA_RNTI format 1A),
3523 3524 3525 3526 3527
    // 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
3528
    dci_decoding_procedure0(pdcch_vars,1,mode,subframe,
3529 3530 3531 3532
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3533
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3534
			    P_RNTI,
3535 3536 3537 3538
                            ra_rnti,
                            3,
                            format1A,
                            format1A,
3539
                            format1A,
3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551
                            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)))
3552
      return(dci_cnt);
3553

3554 3555
    // 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
3556
    dci_decoding_procedure0(pdcch_vars,1,mode,subframe,
3557 3558 3559 3560
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3561
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3562
                            ra_rnti,
3563 3564 3565
			    P_RNTI,
			    3,
                            format1C,
3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576
                            format1C,
                            format1C,
                            format1C,
                            format1C_size_bits,
                            format1C_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);
3577 3578 3579 3580
    //#endif

  }

3581
  if (ue->UE_mode[eNB_id] <= PRACH)
3582 3583
    return(dci_cnt);

3584 3585
  if (ue->prach_resources[eNB_id])
    ra_rnti = ue->prach_resources[eNB_id]->ra_RNTI;
3586

3587
  // Now check UE_SPEC format0/1A ue_spec search spaces at aggregation 8
3588
  //  printf("[DCI search] Format 0/1A aggregation 8\n");
3589
  dci_decoding_procedure0(pdcch_vars,0,mode,
3590 3591 3592 3593 3594
                          subframe,
                          dci_alloc,
                          eNB_id,
                          frame_parms,
                          mi,
3595
                          ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3596
                          ra_rnti,
3597
			  P_RNTI,
3598
			  0,
3599
                          format1A,
3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612
                          format1A,
                          format1A,
                          format0,
                          format0_size_bits,
                          format0_size_bytes,
                          &dci_cnt,
                          &format0_found,
                          &format_c_found,
                          &CCEmap0,
                          &CCEmap1,
                          &CCEmap2);

  if ((CCEmap0==0xffff)||
3613 3614
      ((format0_found==1)&&(format_c_found==1)))
    return(dci_cnt);
3615

3616
  //  printf("[DCI search] Format 0 aggregation 4\n");
3617
  // Now check UE_SPEC format 0 search spaces at aggregation 4
3618
  dci_decoding_procedure0(pdcch_vars,0,mode,
3619 3620 3621 3622 3623
                          subframe,
                          dci_alloc,
                          eNB_id,
                          frame_parms,
                          mi,
3624
                          ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3625
                          ra_rnti,
3626
			  P_RNTI,
3627
			  1,
3628
                          format1A,
3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641
                          format1A,
                          format1A,
                          format0,
                          format0_size_bits,
                          format0_size_bytes,
                          &dci_cnt,
                          &format0_found,
                          &format_c_found,
                          &CCEmap0,
                          &CCEmap1,
                          &CCEmap2);

  if ((CCEmap0==0xffff)||
3642 3643 3644
      ((format0_found==1)&&(format_c_found==1)))
    return(dci_cnt);

3645
  if ((CCEmap0==0xffff)||
3646 3647
      ((format0_found==1)&&(format_c_found==1)))
    return(dci_cnt);
3648

3649
  //  printf("[DCI search] Format 0 aggregation 2\n");
3650
  // Now check UE_SPEC format 0 search spaces at aggregation 2
3651
  dci_decoding_procedure0(pdcch_vars,0,mode,
3652 3653 3654 3655 3656
                          subframe,
                          dci_alloc,
                          eNB_id,
                          frame_parms,
                          mi,
3657
                          ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3658
                          ra_rnti,
3659
			  P_RNTI,
3660
                          2,
3661 3662
                          format1A,
                          format1A,
3663
                          format1A,
3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674
                          format0,
                          format0_size_bits,
                          format0_size_bytes,
                          &dci_cnt,
                          &format0_found,
                          &format_c_found,
                          &CCEmap0,
                          &CCEmap1,
                          &CCEmap2);

  if ((CCEmap0==0xffff)||
3675 3676 3677 3678
      ((format0_found==1)&&(format_c_found==1)))
    return(dci_cnt);

  //  printf("[DCI search] Format 0 aggregation 4\n");
3679
  // Now check UE_SPEC format 0 search spaces at aggregation 1
3680
  dci_decoding_procedure0(pdcch_vars,0,mode,
3681 3682 3683 3684 3685
                          subframe,
                          dci_alloc,
                          eNB_id,
                          frame_parms,
                          mi,
3686
                          ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3687
                          ra_rnti,
3688
			  P_RNTI,
3689
                          3,
3690 3691
                          format1A,
                          format1A,
3692
                          format1A,
3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703
                          format0,
                          format0_size_bits,
                          format0_size_bytes,
                          &dci_cnt,
                          &format0_found,
                          &format_c_found,
                          &CCEmap0,
                          &CCEmap1,
                          &CCEmap2);

  if ((CCEmap0==0xffff)||
3704 3705 3706 3707 3708 3709 3710
      ((format0_found==1)&&(format_c_found==1)))
    return(dci_cnt);




  // These are for CRNTI based on transmission mode
Xiwen JIANG's avatar
Xiwen JIANG committed
3711
  if ((tmode < 3) || (tmode == 7)) {
3712
    // Now check UE_SPEC format 1 search spaces at aggregation 1
3713
    old_dci_cnt=dci_cnt;
3714
    dci_decoding_procedure0(pdcch_vars,0,mode,subframe,
3715 3716 3717 3718
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3719
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3720
                            ra_rnti,
3721
			    P_RNTI,
3722 3723 3724
                            0,
                            format1A,
                            format1A,
3725
                            format1A,
3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737
                            format1,
                            format1_size_bits,
                            format1_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);

    if ((CCEmap0==0xffff) ||
        (format_c_found==1))
3738
      return(dci_cnt);
3739

3740 3741
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);
3742 3743

    // Now check UE_SPEC format 1 search spaces at aggregation 2
3744
    old_dci_cnt=dci_cnt;
3745
    dci_decoding_procedure0(pdcch_vars,0,mode,subframe,
3746 3747 3748 3749
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3750
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3751
                            ra_rnti,
3752
			    P_RNTI,
3753 3754 3755
                            1,
                            format1A,
                            format1A,
3756
                            format1A,
3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769
                            format1,
                            format1_size_bits,
                            format1_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);


    if ((CCEmap0==0xffff)||
        (format_c_found==1))
3770
      return(dci_cnt);
3771

3772
    if (dci_cnt>old_dci_cnt)
3773
      return(dci_cnt);
3774

3775
    // Now check UE_SPEC format 1 search spaces at aggregation 4
3776
    old_dci_cnt=dci_cnt;
3777
    dci_decoding_procedure0(pdcch_vars,0,mode,subframe,
3778 3779 3780 3781
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3782
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3783
                            ra_rnti,
3784 3785 3786
			    P_RNTI,
			    2,
                            format1A,
3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800
                            format1A,
                            format1A,
                            format1,
                            format1_size_bits,
                            format1_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);

    if ((CCEmap0==0xffff)||
        ((format0_found==1)&&(format_c_found==1)))
3801
      return(dci_cnt);
3802

3803 3804 3805 3806 3807 3808
    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;
3809
    dci_decoding_procedure0(pdcch_vars,0,mode,subframe,
3810 3811 3812 3813
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3814
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3815
                            ra_rnti,
3816
			    P_RNTI,
3817 3818 3819
                            3,
                            format1A,
                            format1A,
3820
                            format1A,
3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832
                            format1,
                            format1_size_bits,
                            format1_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);

    if ((CCEmap0==0xffff)||
        ((format0_found==1)&&(format_c_found==1)))
3833
      return(dci_cnt);
3834

3835 3836
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);
3837 3838 3839

    //#endif //ALL_AGGREGATION
  } else if (tmode == 3) {
3840 3841


hbilel's avatar
hbilel committed
3842
    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);
3843
    // Now check UE_SPEC format 2A_2A search spaces at aggregation 1
hbilel's avatar
hbilel committed
3844
    old_dci_cnt=dci_cnt;
3845
    dci_decoding_procedure0(pdcch_vars,0,mode,
3846 3847 3848 3849 3850
                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3851
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3852
                            ra_rnti,
hbilel's avatar
hbilel committed
3853
                            P_RNTI,
3854 3855 3856
                            0,
                            format1A,
                            format1A,
3857
                            format1A,
3858 3859 3860 3861 3862 3863 3864 3865 3866 3867
                            format2A,
                            format2A_size_bits,
                            format2A_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);

hbilel's avatar
hbilel committed
3868
    LOG_D(PHY," format 2A_2A search CCEmap0 %x, format0_found %d, format_c_found %d \n", CCEmap0, format0_found, format_c_found);
3869 3870
    if ((CCEmap0==0xffff)||
        ((format0_found==1)&&(format_c_found==1)))
3871
      return(dci_cnt);
3872

hbilel's avatar
hbilel committed
3873
    LOG_D(PHY," format 2A_2A search dci_cnt %d, old_dci_cn t%d \n", dci_cnt, old_dci_cnt);
3874 3875 3876
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

3877
    // Now check UE_SPEC format 2 search spaces at aggregation 2
hbilel's avatar
hbilel committed
3878
    LOG_D(PHY," Now check UE_SPEC format 2A_2A search aggregation 2 dci length: %d[bits] %d[bytes]\n",format2A_size_bits,format2A_size_bytes);
hbilel's avatar
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3879
    old_dci_cnt=dci_cnt;
3880
    dci_decoding_procedure0(pdcch_vars,0,mode,
3881 3882 3883 3884 3885
                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3886
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3887
                            ra_rnti,
3888
			    P_RNTI,
3889 3890 3891
                            1,
                            format1A,
                            format1A,
3892
                            format1A,
3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904
                            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)))
3905
      return(dci_cnt);
3906

hbilel's avatar
hbilel committed
3907
    LOG_D(PHY," format 2A_2A search dci_cnt %d, old_dci_cn t%d \n", dci_cnt, old_dci_cnt);
3908 3909 3910
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

3911
    // Now check UE_SPEC format 2_2A search spaces at aggregation 4
hbilel's avatar
hbilel committed
3912 3913
    LOG_D(PHY," Now check UE_SPEC format 2_2A search spaces at aggregation 4 \n");
    old_dci_cnt=dci_cnt;
3914
    dci_decoding_procedure0(pdcch_vars,0,mode,
3915 3916 3917 3918 3919
                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3920
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3921
                            ra_rnti,
hbilel's avatar
hbilel committed
3922
                            P_RNTI,
3923 3924 3925
                            2,
                            format1A,
                            format1A,
3926
                            format1A,
3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938
                            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)))
3939
      return(dci_cnt);
3940

hbilel's avatar
hbilel committed
3941
    LOG_D(PHY," format 2A_2A search dci_cnt %d, old_dci_cn t%d \n", dci_cnt, old_dci_cnt);
3942 3943 3944 3945
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

    //#ifdef ALL_AGGREGATION
3946
    // Now check UE_SPEC format 2_2A search spaces at aggregation 8
hbilel's avatar
hbilel committed
3947
    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
3948
    old_dci_cnt=dci_cnt;
3949
    dci_decoding_procedure0(pdcch_vars,0,mode,
3950 3951 3952 3953 3954
                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3955
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3956
                            ra_rnti,
3957
			    P_RNTI,
3958 3959 3960
                            3,
                            format1A,
                            format1A,
3961
                            format1A,
3962 3963 3964 3965 3966 3967 3968 3969 3970
                            format2A,
                            format2A_size_bits,
                            format2A_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);
3971
    //#endif
hbilel's avatar
hbilel committed
3972 3973 3974 3975 3976 3977 3978
    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);
3979
  } else if (tmode == 4) {
3980

3981
    // Now check UE_SPEC format 2_2A search spaces at aggregation 1
hbilel's avatar
hbilel committed
3982
    old_dci_cnt=dci_cnt;
3983
    dci_decoding_procedure0(pdcch_vars,0,mode,
3984 3985 3986 3987 3988
                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
3989
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3990
                            ra_rnti,
3991
			    P_RNTI,
3992 3993 3994
                            0,
                            format1A,
                            format1A,
3995
                            format1A,
3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007
                            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)))
4008
      return(dci_cnt);
4009

4010 4011 4012
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

4013
    // Now check UE_SPEC format 2 search spaces at aggregation 2
hbilel's avatar
hbilel committed
4014
    old_dci_cnt=dci_cnt;
4015
    dci_decoding_procedure0(pdcch_vars,0,mode,
4016 4017 4018 4019 4020
                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
4021
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
4022
                            ra_rnti,
4023
			    P_RNTI,
4024 4025 4026
                            1,
                            format1A,
                            format1A,
4027
                            format1A,
4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039
                            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)))
4040
      return(dci_cnt);
4041

4042 4043 4044
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

4045
    // Now check UE_SPEC format 2_2A search spaces at aggregation 4
hbilel's avatar
hbilel committed
4046
    old_dci_cnt=dci_cnt;
4047
    dci_decoding_procedure0(pdcch_vars,0,mode,
4048 4049 4050 4051 4052
                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
4053
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
4054
                            ra_rnti,
4055
			    P_RNTI,
4056 4057 4058
                            2,
                            format1A,
                            format1A,
4059
                            format1A,
4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071
                            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)))
4072
      return(dci_cnt);
4073

4074 4075 4076 4077
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

    //#ifdef ALL_AGGREGATION
4078
    // Now check UE_SPEC format 2_2A search spaces at aggregation 8
hbilel's avatar
hbilel committed
4079
    old_dci_cnt=dci_cnt;
4080
    dci_decoding_procedure0(pdcch_vars,0,mode,
4081 4082 4083 4084 4085
                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
4086
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
4087
                            ra_rnti,
4088
			    P_RNTI,
4089 4090 4091
                            3,
                            format1A,
                            format1A,
4092
                            format1A,
4093 4094 4095 4096 4097 4098 4099 4100 4101
                            format2,
                            format2_size_bits,
                            format2_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);
4102
    //#endif
Xiwen JIANG's avatar
Xiwen JIANG committed
4103
  } else if ((tmode==5) || (tmode==6)) { // This is MU-MIMO
4104

4105
    // Now check UE_SPEC format 1E_2A_M10PRB search spaces aggregation 1
4106
#ifdef DEBUG_DCI_DECODING
4107
    LOG_I(PHY," MU-MIMO check UE_SPEC format 1E_2A_M10PRB\n");
4108
#endif
hbilel's avatar
hbilel committed
4109
    old_dci_cnt=dci_cnt;
4110
    dci_decoding_procedure0(pdcch_vars,0,mode,
4111 4112 4113 4114 4115
                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
4116
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
4117
                            ra_rnti,
4118
			    P_RNTI,
4119 4120 4121
                            0,
                            format1A,
                            format1A,
4122
                            format1A,
4123 4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134 4135
                            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)))
4136
      return(dci_cnt);
4137

4138 4139
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);
4140 4141

    // Now check UE_SPEC format 1E_2A_M10PRB search spaces aggregation 2
hbilel's avatar
hbilel committed
4142
    old_dci_cnt=dci_cnt;
4143
    dci_decoding_procedure0(pdcch_vars,0,mode,
4144 4145 4146 4147 4148
                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
4149
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
4150
                            ra_rnti,
4151
			    P_RNTI,
4152 4153 4154
                            1,
                            format1A,
                            format1A,
4155
                            format1A,
4156 4157 4158 4159 4160 4161 4162 4163 4164 4165 4166 4167 4168
                            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);
4169

4170 4171
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);
4172

4173
    // Now check UE_SPEC format 1E_2A_M10PRB search spaces aggregation 4
hbilel's avatar
hbilel committed
4174
    old_dci_cnt=dci_cnt;
4175
    dci_decoding_procedure0(pdcch_vars,0,mode,
4176 4177 4178 4179 4180
                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
4181
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
4182
                            ra_rnti,
4183
			    P_RNTI,
4184 4185 4186
                            2,
                            format1A,
                            format1A,
4187
                            format1A,
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);
4201

4202 4203
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);
4204

4205 4206 4207
    //#ifdef ALL_AGGREGATION

    // Now check UE_SPEC format 1E_2A_M10PRB search spaces at aggregation 8
hbilel's avatar
hbilel committed
4208
    old_dci_cnt=dci_cnt;
4209
    dci_decoding_procedure0(pdcch_vars,0,mode,
4210 4211 4212 4213 4214
                            subframe,
                            dci_alloc,
                            eNB_id,
                            frame_parms,
                            mi,
4215
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
4216
                            ra_rnti,
4217
			    P_RNTI,
4218 4219 4220
                            3,
                            format1A,
                            format1A,
4221
                            format1A,
4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241
                            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

  }
4242 4243 4244 4245 4246

  return(dci_cnt);
}

#ifdef PHY_ABSTRACTION
4247
uint16_t dci_decoding_procedure_emul(LTE_UE_PDCCH **pdcch_vars,
4248 4249 4250 4251 4252 4253 4254
                                     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)
{

4255
  uint8_t  dci_cnt=0,i;
4256

4257 4258 4259 4260
  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);

4261
  for (i=num_common_dci; i<(num_ue_spec_dci+num_common_dci); i++) {
4262
    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,
4263 4264
          dci_alloc_tx[i].dci_pdu[0]&0x80);

4265
    if (dci_alloc_tx[i].rnti == pdcch_vars[eNB_id]->crnti) {
4266 4267 4268 4269 4270 4271 4272 4273 4274
      memcpy(dci_alloc_rx+dci_cnt,dci_alloc_tx+i,sizeof(DCI_ALLOC_t));
      dci_cnt++;
    }
  }


  return(dci_cnt);
}
#endif