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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][0];
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#elif defined(__arm__)
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#endif
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      for (rb=0; rb<nb_rb; rb++) {

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

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

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

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


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

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#elif defined(__arm__)

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

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


void pdcch_detection_mrc_i(LTE_DL_FRAME_PARMS *frame_parms,
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                           int32_t **rxdataF_comp,
                           int32_t **rxdataF_comp_i,
                           int32_t **rho,
                           int32_t **rho_i,
                           uint8_t symbol)
{
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  uint8_t aatx;
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#if defined(__x86_64__) || defined(__i386__)
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  __m128i *rxdataF_comp128_0,*rxdataF_comp128_1,*rxdataF_comp128_i0,*rxdataF_comp128_i1,*rho128_0,*rho128_1,*rho128_i0,*rho128_i1;
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#elif defined(__arm__)
  int16x8_t *rxdataF_comp128_0,*rxdataF_comp128_1,*rxdataF_comp128_i0,*rxdataF_comp128_i1,*rho128_0,*rho128_1,*rho128_i0,*rho128_i1;
#endif
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  int32_t i;
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  if (frame_parms->nb_antennas_rx>1) {
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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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931

932
    if ((frame_parms->N_RB_DL&1) == 0)  { // even number of RBs
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      for (rb=0; rb<frame_parms->N_RB_DL; rb++) {

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

          //dl_ch0++;
        }

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

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

            rxF_ext[i]=rxF[i];

          }

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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


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

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

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


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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

        } else {
          j=0;

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

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


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

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

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

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

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

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

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

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

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


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

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

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

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

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

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

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

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

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


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

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

  if (symbol==0)
    pilots=1;

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

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#elif defined(__arm__)

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

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

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

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

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

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

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

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

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

#endif
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      }
    }
  }
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  if (rho) {

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

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

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

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

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

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


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

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

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

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#elif defined(__arm_)


#endif
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      }
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    }

  }

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#if defined(__x86_64__) || defined(__i386__)
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  _mm_empty();
  _m_empty();
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#endif
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}
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void pdcch_detection_mrc(LTE_DL_FRAME_PARMS *frame_parms,
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                         int32_t **rxdataF_comp,
                         uint8_t symbol)
{
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  uint8_t aatx;
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#if defined(__x86_64__) || defined(__i386__)
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  __m128i *rxdataF_comp128_0,*rxdataF_comp128_1;
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#elif defined(__arm__)
 int16x8_t *rxdataF_comp128_0,*rxdataF_comp128_1;
#endif
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  int32_t i;
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  if (frame_parms->nb_antennas_rx>1) {
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    for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) {
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#if defined(__x86_64__) || defined(__i386__)
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      rxdataF_comp128_0   = (__m128i *)&rxdataF_comp[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];
      rxdataF_comp128_1   = (__m128i *)&rxdataF_comp[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];
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#elif defined(__arm__)
      rxdataF_comp128_0   = (int16x8_t *)&rxdataF_comp[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];
      rxdataF_comp128_1   = (int16x8_t *)&rxdataF_comp[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];
#endif
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      // MRC on each re of rb
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      for (i=0; i<frame_parms->N_RB_DL*3; i++) {
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#if defined(__x86_64__) || defined(__i386__)
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        rxdataF_comp128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rxdataF_comp128_0[i],1),_mm_srai_epi16(rxdataF_comp128_1[i],1));
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#elif defined(__arm__)
        rxdataF_comp128_0[i] = vhaddq_s16(rxdataF_comp128_0[i],rxdataF_comp128_1[i]);
#endif
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      }
    }
  }
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#if defined(__x86_64__) || defined(__i386__)
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  _mm_empty();
  _m_empty();
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#endif
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}

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

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

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

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


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

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

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}

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int32_t avgP[4];
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int32_t rx_pdcch(PHY_VARS_UE *ue,
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                 uint32_t frame,
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                 uint8_t subframe,
                 uint8_t eNB_id,
                 MIMO_mode_t mimo_mode,
                 uint32_t high_speed_flag,
                 uint8_t is_secondary_ue)
{
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  LTE_UE_COMMON *common_vars      = &ue->common_vars;
  LTE_DL_FRAME_PARMS *frame_parms = &ue->frame_parms;
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  LTE_UE_PDCCH **pdcch_vars       = ue->pdcch_vars[ue->current_thread_id[subframe]];
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  uint8_t log2_maxh,aatx,aarx;
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#ifdef MU_RECEIVER
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  uint8_t eNB_id_i=eNB_id+1;//add 1 to eNB_id to separate from wanted signal, chosen as the B/F'd pilots from the SeNB are shifted by 1
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#endif
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  int32_t avgs;
  uint8_t n_pdcch_symbols;
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  uint8_t mi = get_mi(frame_parms,subframe);
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  //printf("In rx_pdcch, subframe %d, eNB_id %d, pdcch_vars %d \n",subframe,eNB_id,pdcch_vars);
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  // procress ofdm symbol 0
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    if (is_secondary_ue == 1) {
      pdcch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
                               common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id+1], //add 1 to eNB_id to compensate for the shifted B/F'd pilots from the SeNB
                               pdcch_vars[eNB_id]->rxdataF_ext,
                               pdcch_vars[eNB_id]->dl_ch_estimates_ext,
                               0,
                               high_speed_flag,
                               frame_parms);
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#ifdef MU_RECEIVER
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      pdcch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
                               common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id_i - 1],//subtract 1 to eNB_id_i to compensate for the non-shifted pilots from the PeNB
                               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
                               0,
                               high_speed_flag,
                               frame_parms);
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#endif //MU_RECEIVER
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    } else if (frame_parms->nb_antenna_ports_eNB>1) {
      pdcch_extract_rbs_dual(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
                             common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id],
                             pdcch_vars[eNB_id]->rxdataF_ext,
                             pdcch_vars[eNB_id]->dl_ch_estimates_ext,
                             0,
                             high_speed_flag,
                             frame_parms);
    } else {
      pdcch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
                               common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id],
                               pdcch_vars[eNB_id]->rxdataF_ext,
                               pdcch_vars[eNB_id]->dl_ch_estimates_ext,
                               0,
                               high_speed_flag,
                               frame_parms);
    }
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  // compute channel level based on ofdm symbol 0
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  pdcch_channel_level(pdcch_vars[eNB_id]->dl_ch_estimates_ext,
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                      frame_parms,
                      avgP,
                      frame_parms->N_RB_DL);
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  avgs = 0;
1751

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

#ifdef MU_RECEIVER
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  if (is_secondary_ue) {
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      //get MF output for interfering stream
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      pdcch_channel_compensation(pdcch_vars[eNB_id_i]->rxdataF_ext,
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              pdcch_vars[eNB_id_i]->dl_ch_estimates_ext,
              pdcch_vars[eNB_id_i]->rxdataF_comp,
              (aatx>1) ? pdcch_vars[eNB_id_i]->rho : NULL,
                      frame_parms,
                      0,
                      log2_maxh); // log2_maxh+I0_shift
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#ifdef DEBUG_PHY
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      write_output("rxF_comp_i.m","rxF_c_i",&pdcch_vars[eNB_id_i]->rxdataF_comp[0][s*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
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#endif
      pdcch_dual_stream_correlation(frame_parms,
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              0,
              pdcch_vars[eNB_id]->dl_ch_estimates_ext,
              pdcch_vars[eNB_id_i]->dl_ch_estimates_ext,
              pdcch_vars[eNB_id]->dl_ch_rho_ext,
              log2_maxh);
  }
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#endif //MU_RECEIVER
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  if (frame_parms->nb_antennas_rx > 1) {
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#ifdef MU_RECEIVER
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      if (is_secondary_ue) {
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          pdcch_detection_mrc_i(frame_parms,
                  pdcch_vars[eNB_id]->rxdataF_comp,
                  pdcch_vars[eNB_id_i]->rxdataF_comp,
                  pdcch_vars[eNB_id]->rho,
                  pdcch_vars[eNB_id]->dl_ch_rho_ext,
                  0);
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#ifdef DEBUG_PHY
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          write_output("rxF_comp_d.m","rxF_c_d",&pdcch_vars[eNB_id]->rxdataF_comp[0][s*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
          write_output("rxF_comp_i.m","rxF_c_i",&pdcch_vars[eNB_id_i]->rxdataF_comp[0][s*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
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#endif
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      } else
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#endif //MU_RECEIVER
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          pdcch_detection_mrc(frame_parms,
                  pdcch_vars[eNB_id]->rxdataF_comp,
                  0);
  }
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  if (mimo_mode == SISO)
      pdcch_siso(frame_parms,pdcch_vars[eNB_id]->rxdataF_comp,0);
  else
      pdcch_alamouti(frame_parms,pdcch_vars[eNB_id]->rxdataF_comp,0);
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#ifdef MU_RECEIVER
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  if (is_secondary_ue) {
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      pdcch_qpsk_qpsk_llr(frame_parms,
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              pdcch_vars[eNB_id]->rxdataF_comp,
              pdcch_vars[eNB_id_i]->rxdataF_comp,
              pdcch_vars[eNB_id]->dl_ch_rho_ext,
              pdcch_vars[eNB_id]->llr16, //subsequent function require 16 bit llr, but output must be 8 bit (actually clipped to 4, because of the Viterbi decoder)
              pdcch_vars[eNB_id]->llr,
              0);
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      /*
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      #ifdef DEBUG_PHY
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      if (subframe==5) {
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      write_output("llr8_seq.m","llr8",&pdcch_vars[eNB_id]->llr[s*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,4);
      write_output("llr16_seq.m","llr16",&pdcch_vars[eNB_id]->llr16[s*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,4);
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      }
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      #endif*/
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  } else {
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#endif //MU_RECEIVER
      pdcch_llr(frame_parms,
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              pdcch_vars[eNB_id]->rxdataF_comp,
              (char *)pdcch_vars[eNB_id]->llr,
              0);
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      /*#ifdef DEBUG_PHY
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      write_output("llr8_seq.m","llr8",&pdcch_vars[eNB_id]->llr[s*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,4);
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      #endif*/
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#ifdef MU_RECEIVER
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  }
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#endif //MU_RECEIVER


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#if T_TRACER
  T(T_UE_PHY_PDCCH_IQ, T_INT(frame_parms->N_RB_DL), T_INT(frame_parms->N_RB_DL),
    T_INT(n_pdcch_symbols),
    T_BUFFER(pdcch_vars[eNB_id]->rxdataF_comp, frame_parms->N_RB_DL*12*n_pdcch_symbols* 4));
#endif
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  // decode pcfich here and find out pdcch ofdm symbol number
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  n_pdcch_symbols = rx_pcfich(frame_parms,
1876
                              subframe,
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                              pdcch_vars[eNB_id],
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                              mimo_mode);

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  if (n_pdcch_symbols>3)
    n_pdcch_symbols=1;

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#ifdef DEBUG_DCI_DECODING

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  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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  // process pdcch ofdm symbol 1 and 2 if necessary
  for (int s=1; s<n_pdcch_symbols; s++){
      if (is_secondary_ue == 1) {
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          pdcch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
                  common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id+1], //add 1 to eNB_id to compensate for the shifted B/F'd pilots from the SeNB
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                  pdcch_vars[eNB_id]->rxdataF_ext,
                  pdcch_vars[eNB_id]->dl_ch_estimates_ext,
                  s,
                  high_speed_flag,
                  frame_parms);
#ifdef MU_RECEIVER
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pdcch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
        common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id_i - 1],//subtract 1 to eNB_id_i to compensate for the non-shifted pilots from the PeNB
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        pdcch_vars[eNB_id_i]->rxdataF_ext,//shift by two to simulate transmission from a second antenna
        pdcch_vars[eNB_id_i]->dl_ch_estimates_ext,//shift by two to simulate transmission from a second antenna
        s,
        high_speed_flag,
        frame_parms);
#endif //MU_RECEIVER
      } else if (frame_parms->nb_antenna_ports_eNB>1) {
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          pdcch_extract_rbs_dual(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
                  common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id],
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                  pdcch_vars[eNB_id]->rxdataF_ext,
                  pdcch_vars[eNB_id]->dl_ch_estimates_ext,
                  s,
                  high_speed_flag,
                  frame_parms);
      } else {
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          pdcch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
                  common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id],
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                  pdcch_vars[eNB_id]->rxdataF_ext,
                  pdcch_vars[eNB_id]->dl_ch_estimates_ext,
                  s,
                  high_speed_flag,
                  frame_parms);
      }


      pdcch_channel_compensation(pdcch_vars[eNB_id]->rxdataF_ext,
              pdcch_vars[eNB_id]->dl_ch_estimates_ext,
              pdcch_vars[eNB_id]->rxdataF_comp,
              (aatx>1) ? pdcch_vars[eNB_id]->rho : NULL,
                      frame_parms,
                      s,
                      log2_maxh); // log2_maxh+I0_shift


#ifdef DEBUG_PHY

if (subframe==5)
    write_output("rxF_comp_d.m","rxF_c_d",&pdcch_vars[eNB_id]->rxdataF_comp[0][s*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);

#endif

#ifdef MU_RECEIVER

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

#endif //MU_RECEIVER


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

    if (is_secondary_ue) {
        pdcch_detection_mrc_i(frame_parms,
                pdcch_vars[eNB_id]->rxdataF_comp,
                pdcch_vars[eNB_id_i]->rxdataF_comp,
                pdcch_vars[eNB_id]->rho,
                pdcch_vars[eNB_id]->dl_ch_rho_ext,
                s);
#ifdef DEBUG_PHY
write_output("rxF_comp_d.m","rxF_c_d",&pdcch_vars[eNB_id]->rxdataF_comp[0][s*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
write_output("rxF_comp_i.m","rxF_c_i",&pdcch_vars[eNB_id_i]->rxdataF_comp[0][s*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
#endif
    } else
#endif //MU_RECEIVER
        pdcch_detection_mrc(frame_parms,
                pdcch_vars[eNB_id]->rxdataF_comp,
                s);

}

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


#ifdef MU_RECEIVER

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

#ifdef MU_RECEIVER
}

#endif //MU_RECEIVER

  }

2031 2032
  pdcch_demapping(pdcch_vars[eNB_id]->llr,
                  pdcch_vars[eNB_id]->wbar,
2033 2034 2035
                  frame_parms,
                  n_pdcch_symbols,
                  get_mi(frame_parms,subframe));
2036 2037

  pdcch_deinterleaving(frame_parms,
2038 2039
                       (uint16_t*)pdcch_vars[eNB_id]->e_rx,
                       pdcch_vars[eNB_id]->wbar,
2040 2041 2042
                       n_pdcch_symbols,
                       mi);

2043
  pdcch_unscrambling(frame_parms,
2044
                     subframe,
2045
                     pdcch_vars[eNB_id]->e_rx,
2046 2047
                     get_nCCE(n_pdcch_symbols,frame_parms,mi)*72);

2048
  pdcch_vars[eNB_id]->num_pdcch_symbols = n_pdcch_symbols;
2049 2050 2051 2052 2053 2054

  return(0);
}


void pdcch_scrambling(LTE_DL_FRAME_PARMS *frame_parms,
2055 2056 2057 2058
                      uint8_t subframe,
                      uint8_t *e,
                      uint32_t length)
{
2059
  int i;
2060 2061
  uint8_t reset;
  uint32_t x1, x2, s=0;
2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073

  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;
    }
2074

2075 2076 2077 2078 2079 2080 2081
    //    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,
2082 2083 2084 2085
                        uint8_t subframe,
                        int8_t* llr,
                        uint32_t length)
{
2086 2087

  int i;
2088 2089
  uint8_t reset;
  uint32_t x1, x2, s=0;
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  reset = 1;
  // x1 is set in first call to lte_gold_generic

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

  for (i=0; i<length; i++) {
2097
    if ((i&0x1f)==0) {
2098
      s = lte_gold_generic(&x1, &x2, reset);
2099
      //      printf("lte_gold[%d]=%x\n",i,s);
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      reset = 0;
    }
2102

2103 2104
    
    //    printf("unscrambling %d : e %d, c %d => ",i,llr[i],((s>>(i&0x1f))&1));
2105 2106
    if (((s>>(i%32))&1)==0)
      llr[i] = -llr[i];
2107
    //    printf("%d\n",llr[i]);
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  }
}
2111

2112

2113
uint8_t get_num_pdcch_symbols(uint8_t num_dci,
2114 2115 2116 2117
                              DCI_ALLOC_t *dci_alloc,
                              LTE_DL_FRAME_PARMS *frame_parms,
                              uint8_t subframe)
{
2118

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  uint16_t numCCE = 0;
  uint8_t i;
  uint8_t nCCEmin = 0;
2122 2123 2124
  uint16_t CCE_max_used_index = 0;
  uint16_t firstCCE_max = dci_alloc[0].firstCCE;
  uint8_t  L = dci_alloc[0].L;
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  // check pdcch duration imposed by PHICH duration (Section 6.9 of 36-211)
  if (frame_parms->Ncp==1) { // extended prefix
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    if ((frame_parms->frame_type == TDD) &&
        ((frame_parms->tdd_config<3)||(frame_parms->tdd_config==6)) &&
        ((subframe==1) || (subframe==6))) // subframes 1 and 6 (S-subframes) for 5ms switching periodicity are 2 symbols
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      nCCEmin = 2;
    else {   // 10ms switching periodicity is always 3 symbols, any DL-only subframe is 3 symbols
      nCCEmin = 3;
    }
  }

  // compute numCCE
2138
  for (i=0; i<num_dci; i++) {
2139
    //     printf("dci %d => %d\n",i,dci_alloc[i].L);
2140
    numCCE += (1<<(dci_alloc[i].L));
2141 2142

    if(firstCCE_max < dci_alloc[i].firstCCE) {
2143 2144
      firstCCE_max = dci_alloc[i].firstCCE;
      L            = dci_alloc[i].L;
2145
    }
2146
  }
2147
  CCE_max_used_index = firstCCE_max + (1<<L) - 1;
2148 2149

  //if ((9*numCCE) <= (frame_parms->N_RB_DL*2))
2150
  if (CCE_max_used_index < get_nCCE(1, frame_parms, get_mi(frame_parms, subframe)))
2151
    return(cmax(1,nCCEmin));
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2152
  //else if ((9*numCCE) <= (frame_parms->N_RB_DL*((frame_parms->nb_antenna_ports_eNB==4) ? 4 : 5)))
2153
  else if (CCE_max_used_index < get_nCCE(2, frame_parms, get_mi(frame_parms, subframe)))
2154
    return(cmax(2,nCCEmin));
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2155
  //else if ((9*numCCE) <= (frame_parms->N_RB_DL*((frame_parms->nb_antenna_ports_eNB==4) ? 7 : 8)))
2156
  else if (CCE_max_used_index < get_nCCE(3, frame_parms, get_mi(frame_parms, subframe)))
2157
    return(cmax(3,nCCEmin));
2158
  else if (frame_parms->N_RB_DL<=10) {
2159
    if (frame_parms->Ncp == 0) { // normal CP
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      printf("numCCE %d, N_RB_DL = %d : should be returning 4 PDCCH symbols (%d,%d,%d)\n",numCCE,frame_parms->N_RB_DL,
2161 2162 2163 2164
             get_nCCE(1, frame_parms, get_mi(frame_parms, subframe)),
             get_nCCE(2, frame_parms, get_mi(frame_parms, subframe)),
             get_nCCE(3, frame_parms, get_mi(frame_parms, subframe)));

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      if ((9*numCCE) <= (frame_parms->N_RB_DL*((frame_parms->nb_antenna_ports_eNB==4) ? 10 : 11)))
2166 2167
        return(4);
    } else { // extended CP
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2168
      if ((9*numCCE) <= (frame_parms->N_RB_DL*((frame_parms->nb_antenna_ports_eNB==4) ? 9 : 10)))
2169
        return(4);
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    }
  }

2173

2174
  LOG_D(PHY," dci.c: get_num_pdcch_symbols subframe %d FATAL, illegal numCCE %d (num_dci %d)\n",subframe,numCCE,num_dci);
2175 2176
  //for (i=0;i<num_dci;i++) {
  //  printf("dci_alloc[%d].L = %d\n",i,dci_alloc[i].L);
2177
  //}
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  //exit(-1);
  return(0);
}

2182
uint8_t generate_dci_top(int num_dci,
2183 2184 2185 2186
                         DCI_ALLOC_t *dci_alloc,
                         uint32_t n_rnti,
                         int16_t amp,
                         LTE_DL_FRAME_PARMS *frame_parms,
2187
                         int32_t **txdataF,
2188 2189
                         uint32_t subframe)
{
2190 2191 2192 2193 2194 2195

  uint8_t *e_ptr,num_pdcch_symbols;
  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);
2196
  static uint8_t e[DCI_BITS_MAX];
2197
  static int32_t yseq0[Msymb],yseq1[Msymb],wbar0[Msymb],wbar1[Msymb];
2198

2199 2200
  int32_t *y[2];
  int32_t *wbar[2];
2201

2202 2203 2204 2205 2206 2207 2208 2209 2210
  int nushiftmod3 = frame_parms->nushift%3;

  int Msymb2;
  int split_flag=0;

  switch (frame_parms->N_RB_DL) {
  case 100:
    Msymb2 = Msymb;
    break;
2211

2212 2213 2214
  case 75:
    Msymb2 = 3*Msymb/4;
    break;
2215

2216 2217 2218
  case 50:
    Msymb2 = Msymb>>1;
    break;
2219

2220 2221 2222
  case 25:
    Msymb2 = Msymb>>2;
    break;
2223

2224 2225 2226
  case 15:
    Msymb2 = Msymb*15/100;
    break;
2227

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  case 6:
    Msymb2 = Msymb*6/100;
    break;
2231

2232 2233 2234 2235 2236
  default:
    Msymb2 = Msymb>>2;
    break;
  }

2237
  num_pdcch_symbols = get_num_pdcch_symbols(num_dci,dci_alloc,frame_parms,subframe);
2238
  //  printf("subframe %d in generate_dci_top num_pdcch_symbols = %d, num_dci %d\n",
2239
  //     subframe,num_pdcch_symbols,num_dci);
2240
  generate_pcfich(num_pdcch_symbols,
2241 2242 2243 2244
                  amp,
                  frame_parms,
                  txdataF,
                  subframe);
2245 2246 2247 2248 2249 2250
  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
2251 2252 2253 2254
  // 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;
2255

2256 2257
  e_ptr = e;

2258 2259
  // generate DCIs
  for (i=0; i<num_dci; i++) {
2260
#ifdef DEBUG_DCI_ENCODING
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    printf("Generating %s DCI %d/%d (nCCE %d) of length %d, aggregation %d (%x)\n",
           dci_alloc[i].search_space == DCI_COMMON_SPACE ? "common" : "UE",
           i,num_dci,dci_alloc[i].firstCCE,dci_alloc[i].dci_length,1<<dci_alloc[i].L,
          *(unsigned int*)dci_alloc[i].dci_pdu);
    dump_dci(frame_parms,&dci_alloc[i]);
#endif

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

  // Scrambling
  //  printf("pdcch scrambling\n");
  pdcch_scrambling(frame_parms,
2280 2281
                   subframe,
                   e,
2282
                   8*get_nquad(num_pdcch_symbols, frame_parms, mi));
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  //72*get_nCCE(num_pdcch_symbols,frame_parms,mi));

2285

2286

2287

2288
  // Now do modulation
2289 2290
  if (frame_parms->mode1_flag==1)
    gain_lin_QPSK = (int16_t)((amp*ONE_OVER_SQRT2_Q15)>>15);
2291
  else
2292
    gain_lin_QPSK = amp/2;
2293 2294

  e_ptr = e;
2295

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#ifdef DEBUG_DCI_ENCODING
  printf(" PDCCH Modulation, Msymb %d, Msymb2 %d,gain_lin_QPSK %d\n",Msymb,Msymb2,gain_lin_QPSK);
#endif


2301 2302
  if (frame_parms->mode1_flag) { //SISO

2303

2304
    for (i=0; i<Msymb2; i++) {
2305
      
2306 2307 2308 2309
      //((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;
2310
      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;
2315 2316 2317

      e_ptr++;
    }
2318
  } else { //ALAMOUTI
2319

2320

2321
    for (i=0; i<Msymb2; i+=2) {
2322 2323

#ifdef DEBUG_DCI_ENCODING
2324
      printf(" PDCCH Modulation (TX diversity): REG %d\n",i>>2);
2325
#endif
2326
      // first antenna position n -> x0
2327
      ((int16_t*)&y[0][i])[0] = (*e_ptr==2) ? 0 : (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
2328
      e_ptr++;
2329
      ((int16_t*)&y[0][i])[1] = (*e_ptr==2) ? 0 : (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
2330
      e_ptr++;
2331

2332
      // second antenna position n -> -x1*
2333
      ((int16_t*)&y[1][i])[0] = (*e_ptr==2) ? 0 : (*e_ptr == 1) ? gain_lin_QPSK : -gain_lin_QPSK;
2334
      e_ptr++;
2335
      ((int16_t*)&y[1][i])[1] = (*e_ptr==2) ? 0 : (*e_ptr == 1) ? -gain_lin_QPSK : gain_lin_QPSK;
2336 2337 2338 2339 2340 2341 2342 2343 2344
      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];

    }
2345 2346 2347 2348
  }


#ifdef DEBUG_DCI_ENCODING
2349
  printf(" PDCCH Interleaving\n");
2350 2351
#endif

2352
  //  printf("y %p (%p,%p), wbar %p (%p,%p)\n",y,y[0],y[1],wbar,wbar[0],wbar[1]);
2353 2354 2355 2356 2357 2358 2359 2360
  // 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
2361
  //  printf("DCI (SF %d) : txdataF %p (0 %p)\n",subframe,&txdataF[0][512*14*subframe],&txdataF[0][0]);
2362 2363
  for (kprime=0; kprime<frame_parms->N_RB_DL*12; kprime++) {
    for (lprime=0; lprime<num_pdcch_symbols; lprime++) {
2364

2365
      symbol_offset = (uint32_t)frame_parms->ofdm_symbol_size*(lprime+(subframe*nsymb));
2366 2367


2368

2369 2370 2371 2372 2373 2374 2375 2376
      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
2377
        printf("generate_dci: skipping REG %d (kprime %d, lprime %d)\n",(lprime==0)?(kprime/6) : (kprime>>2),kprime,lprime);
2378
#endif
2379 2380 2381 2382
      } else {
        // Copy REG to TX buffer

        if ((lprime == 0)||
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2383
            ((lprime==1)&&(frame_parms->nb_antenna_ports_eNB == 4))) {
2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394
          // first symbol, or second symbol+4 TX antennas skip pilots

          kprime_mod12 = kprime%12;

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

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

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                if (frame_parms->nb_antenna_ports_eNB > 1)
2396 2397
                  txdataF[1][tti_offset+i] = wbar[1][mprime];

2398
#ifdef DEBUG_DCI_ENCODING
2399
                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]));
2400
#endif
2401

2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414
                mprime++;
              }
            }
          }
        } else { // no pilots in this symbol
          kprime_mod12 = kprime%12;

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

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                if (frame_parms->nb_antenna_ports_eNB > 1)
2416 2417
                  txdataF[1][tti_offset+i] = wbar[1][mprime];

2418
#ifdef DEBUG_DCI_ENCODING
2419
                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]));
2420
#endif
2421 2422 2423 2424 2425
                mprime++;
              }
            } else {
              txdataF[0][tti_offset+0] = wbar[0][mprime];

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              if (frame_parms->nb_antenna_ports_eNB > 1)
2427 2428
                txdataF[1][tti_offset+0] = wbar[1][mprime];

2429
#ifdef DEBUG_DCI_ENCODING
2430
              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]));
2431
#endif
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              mprime++;
              txdataF[0][tti_offset+1] = wbar[0][mprime];

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

2438
#ifdef DEBUG_DCI_ENCODING
2439
              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]));
2440
#endif
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              mprime++;
              txdataF[0][tti_offset-frame_parms->ofdm_symbol_size+3] = wbar[0][mprime];

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2444
              if (frame_parms->nb_antenna_ports_eNB > 1)
2445 2446
                txdataF[1][tti_offset-frame_parms->ofdm_symbol_size+3] = wbar[1][mprime];

2447
#ifdef DEBUG_DCI_ENCODING
2448
              printf(" PDCCH mapping mprime %d => %d (symbol %d re %d) -> (%d,%d)\n",mprime,tti_offset,symbol_offset,re_offset-frame_parms->ofdm_symbol_size+3,*(short*)&wbar[0][mprime],
2449
                    *(1+(short*)&wbar[0][mprime]));
2450
#endif
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              mprime++;
              txdataF[0][tti_offset-frame_parms->ofdm_symbol_size+4] = wbar[0][mprime];

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2454
              if (frame_parms->nb_antenna_ports_eNB > 1)
2455 2456
                txdataF[1][tti_offset-frame_parms->ofdm_symbol_size+4] = wbar[1][mprime];

2457
#ifdef DEBUG_DCI_ENCODING
2458
              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],
2459
                    *(1+(short*)&wbar[0][mprime]));
2460
#endif
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              mprime++;

            }
          }
        }
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        if (mprime>=Msymb2)
          return(num_pdcch_symbols);
2469
      } // check_phich_reg
2470

2471
    } //lprime loop
2472

2473
    re_offset++;
2474

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    if (re_offset == (frame_parms->ofdm_symbol_size))
      re_offset = 1;
  } // kprime loop
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  return(num_pdcch_symbols);
}

#ifdef PHY_ABSTRACTION
2483
uint8_t generate_dci_top_emul(PHY_VARS_eNB *phy_vars_eNB,
2484
                              int num_dci,
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                              DCI_ALLOC_t *dci_alloc,
                              uint8_t subframe)
{
2488
  int n_dci, n_dci_dl;
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  uint8_t ue_id;
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  LTE_eNB_DLSCH_t *dlsch_eNB;
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  int num_ue_spec_dci;
  int num_common_dci;
  int i;
  uint8_t num_pdcch_symbols = get_num_pdcch_symbols(num_dci,
2495
                              dci_alloc,
2496
                              &phy_vars_eNB->frame_parms,
2497
                              subframe);
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2498
  eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].cntl.cfi=num_pdcch_symbols;
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  num_ue_spec_dci = 0;
  num_common_dci = 0;
  for (i = 0; i < num_dci; i++) {
    /* TODO: maybe useless test, to remove? */
    if (!(dci_alloc[i].firstCCE>=0)) abort();
    if (dci_alloc[i].search_space == DCI_COMMON_SPACE)
      num_common_dci++;
    else
      num_ue_spec_dci++;
  }

  memcpy(phy_vars_eNB->dci_alloc[subframe&1],dci_alloc,sizeof(DCI_ALLOC_t)*(num_dci));
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  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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  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;
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  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);
2520

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2521 2522
  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;
2523
  else
2524 2525
    n_dci_dl = 0;

2526
  for (n_dci =0 ;
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2527
       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);
2528
       n_dci++) {
2529 2530 2531 2532

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

      if (dci_alloc[n_dci].rnti == SI_RNTI) {
2533
        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) {
2540
        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 );
2549
        dlsch_eNB = PHY_vars_eNB_g[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id]->dlsch[ue_id][0];
2550 2551 2552 2553 2554 2555 2556 2557 2558

        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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      }
    }
2561

2562 2563
    n_dci_dl++;
  }
2564

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2565
  memcpy((void *)&eNB_transport_info[phy_vars_eNB->Mod_id][phy_vars_eNB->CC_id].dci_alloc,
2566 2567
         (void *)dci_alloc,
         n_dci*sizeof(DCI_ALLOC_t));
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  return(num_pdcch_symbols);
}
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#endif

2573

2574
void dci_decoding(uint8_t DCI_LENGTH,
2575 2576 2577 2578
                  uint8_t aggregation_level,
                  int8_t *e,
                  uint8_t *decoded_output)
{
2579 2580 2581 2582

  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))];

2583
  uint16_t RCC;
2584

2585 2586
  uint16_t D=(DCI_LENGTH+16+64);
  uint16_t coded_bits;
2587
#ifdef DEBUG_DCI_DECODING
2588
  int32_t i;
2589
#endif
2590

2591
  if (aggregation_level>3) {
2592
    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
2599
  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);
2600
#endif
2601

2602 2603 2604
  // now do decoding
  memset((void*)dummy_w_rx,0,3*D);
  RCC = generate_dummy_w_cc(DCI_LENGTH+16,
2605 2606
                            dummy_w_rx);

2607 2608 2609


#ifdef DEBUG_DCI_DECODING
2610
  LOG_I(PHY," Doing DCI Rate Matching RCC %d, w %p\n",RCC,w);
2611 2612 2613
#endif

  lte_rate_matching_cc_rx(RCC,coded_bits,w_rx,dummy_w_rx,e);
2614 2615 2616 2617 2618

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

2619
#ifdef DEBUG_DCI_DECODING
2620 2621

  for (i=0; i<16+DCI_LENGTH; i++)
2622
    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)));
2623 2624

#endif
2625
  memset(decoded_output,0,2+((16+DCI_LENGTH)>>3));
2626

2627
#ifdef DEBUG_DCI_DECODING
2628
  printf("Before Viterbi\n");
2629

2630
  for (i=0; i<16+DCI_LENGTH; i++)
2631
    printf("%d : (%d,%d,%d)\n",i,*(d_rx+96+(3*i)),*(d_rx+97+(3*i)),*(d_rx+98+(3*i)));
2632 2633

#endif
2634
  //debug_printf("Doing DCI Viterbi \n");
2635
  phy_viterbi_lte_sse2(d_rx+96,decoded_output,16+DCI_LENGTH);
2636
  //debug_printf("Done DCI Viterbi \n");
2637 2638 2639
}


2640
static uint8_t dci_decoded_output[RX_NB_TH][(MAX_DCI_SIZE_BITS+64)/8];
2641

2642 2643
uint16_t get_nCCE(uint8_t num_pdcch_symbols,LTE_DL_FRAME_PARMS *frame_parms,uint8_t mi)
{
2644 2645 2646
  return(get_nquad(num_pdcch_symbols,frame_parms,mi)/9);
}

2647 2648
uint16_t get_nquad(uint8_t num_pdcch_symbols,LTE_DL_FRAME_PARMS *frame_parms,uint8_t mi)
{
2649

2650
  uint16_t Nreg=0;
2651
  uint8_t Ngroup_PHICH = (frame_parms->phich_config_common.phich_resource*frame_parms->N_RB_DL)/48;
2652 2653 2654 2655 2656 2657 2658

  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;
  }
2659

2660 2661 2662 2663 2664 2665 2666
  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;
2667

2668 2669 2670
    case 25:
      Nreg=50+(num_pdcch_symbols-1)*75;
      break;
2671

2672 2673 2674
    case 50:
      Nreg=100+(num_pdcch_symbols-1)*150;
      break;
2675

2676 2677 2678
    case 100:
      Nreg=200+(num_pdcch_symbols-1)*300;
      break;
2679

2680 2681 2682
    default:
      return(0);
    }
2683

2684 2685 2686 2687
  //   printf("Nreg %d (%d)\n",Nreg,Nreg - 4 - (3*Ngroup_PHICH));
  return(Nreg - 4 - (3*Ngroup_PHICH));
}

2688
uint16_t get_nCCE_mac(uint8_t Mod_id,uint8_t CC_id,int num_pdcch_symbols,int subframe)
2689
{
2690 2691

  // check for eNB only !
2692
  return(get_nCCE(num_pdcch_symbols,
2693 2694
		  &PHY_vars_eNB_g[Mod_id][CC_id]->frame_parms,
		  get_mi(&PHY_vars_eNB_g[Mod_id][CC_id]->frame_parms,subframe))); 
2695 2696
}

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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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2779 2780
        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);
  }
}


2799
void dci_decoding_procedure0(LTE_UE_PDCCH **pdcch_vars,
2800
			     int do_common,
2801
			     dci_detect_mode_t mode,
2802
			     uint8_t subframe,
2803 2804
                             DCI_ALLOC_t *dci_alloc,
                             int16_t eNB_id,
2805
                             uint8_t current_thread_id,
2806 2807 2808 2809
                             LTE_DL_FRAME_PARMS *frame_parms,
                             uint8_t mi,
                             uint16_t si_rnti,
                             uint16_t ra_rnti,
2810
                             uint16_t p_rnti,
2811 2812
                             uint8_t L,
                             uint8_t format_si,
2813
                             uint8_t format_p,
2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825
                             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)
{

2826 2827
  uint16_t crc,CCEind,nCCE;
  uint32_t *CCEmap=NULL,CCEmap_mask=0;
2828
  int L2=(1<<L);
2829
  unsigned int Yk,nb_candidates = 0,i,m;
2830 2831
  unsigned int CCEmap_cand;

2832
  nCCE = get_nCCE(pdcch_vars[eNB_id]->num_pdcch_symbols,frame_parms,mi);
2833

2834 2835
  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));
2836
    return;
2837
  }
2838

2839 2840
  if (nCCE<L2) {
    LOG_D(PHY,"skip DCI decoding: nCCE=%d < L2=%d\n", nCCE, L2);
2841
    return;
2842
  }
2843

2844 2845 2846 2847 2848
  if (mode == NO_DCI) {
    LOG_D(PHY, "skip DCI decoding: expect no DCIs at subframe %d\n", subframe);
    return;
  }

2849 2850 2851
  if (do_common == 1) {
    nb_candidates = (L2==4) ? 4 : 2;
    Yk=0;
2852
  } else {
2853 2854 2855
    // Find first available in ue specific search space
    // according to procedure in Section 9.1.1 of 36.213 (v. 8.6)
    // compute Yk
2856
    Yk = (unsigned int)pdcch_vars[eNB_id]->crnti;
2857

2858
    for (i=0; i<=subframe; i++)
2859 2860 2861 2862 2863 2864 2865 2866 2867
      Yk = (Yk*39827)%65537;

    Yk = Yk % (nCCE/L2);

    switch (L2) {
    case 1:
    case 2:
      nb_candidates = 6;
      break;
2868

2869 2870 2871 2872
    case 4:
    case 8:
      nb_candidates = 2;
      break;
2873

2874 2875 2876
    default:
      DevParam(L2, do_common, eNB_id);
      break;
2877
    }
2878
  }
2879

2880 2881 2882 2883 2884 2885 2886
  /*  for (CCEind=0;
       CCEind<nCCE2;
       CCEind+=(1<<L)) {*/

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

2887
  for (m=0; m<nb_candidates; m++) {
2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898

    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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      mac_xface->macphy_exit("Illegal CCEind\n");
2900
      return; // not reached
2901
    }
2902

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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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    }

2926
    CCEmap_cand = (*CCEmap)&CCEmap_mask;
2927 2928

    // CCE is not allocated yet
2929 2930 2931

    if (CCEmap_cand == 0) {
#ifdef DEBUG_DCI_DECODING
2932 2933

      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);
2936
      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) format %d\n",
                pdcch_vars[eNB_id]->num_pdcch_symbols,m,L2,sizeof_bits,CCEind,nCCE,*CCEmap,CCEmap_mask,format_c);
2939 2940 2941 2942 2943

#endif

      dci_decoding(sizeof_bits,
                   L,
2944
                   &pdcch_vars[eNB_id]->e_rx[CCEind*72],
2945
                   &dci_decoded_output[current_thread_id][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]);
      */
2950
      crc = (crc16(&dci_decoded_output[current_thread_id][0],sizeof_bits)>>16) ^ extract_crc(&dci_decoded_output[current_thread_id][0],sizeof_bits);
2951
#ifdef DEBUG_DCI_DECODING
2952
      printf("crc =>%x\n",crc);
2953
#endif
2954 2955

      if (((L>1) && ((crc == si_rnti)||
2956
		     (crc == p_rnti)||
2957
                     (crc == ra_rnti)))||
2958
          (crc == pdcch_vars[eNB_id]->crnti))   {
2959 2960 2961
        dci_alloc[*dci_cnt].dci_length = sizeof_bits;
        dci_alloc[*dci_cnt].rnti       = crc;
        dci_alloc[*dci_cnt].L          = L;
2962
        dci_alloc[*dci_cnt].firstCCE   = CCEind;
2963

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        //printf("DCI FOUND !!! crc =>%x,  sizeof_bits %d, sizeof_bytes %d \n",crc, sizeof_bits, sizeof_bytes);
2965
        if (sizeof_bytes<=4) {
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          dci_alloc[*dci_cnt].dci_pdu[3] = dci_decoded_output[current_thread_id][0];
          dci_alloc[*dci_cnt].dci_pdu[2] = dci_decoded_output[current_thread_id][1];
          dci_alloc[*dci_cnt].dci_pdu[1] = dci_decoded_output[current_thread_id][2];
          dci_alloc[*dci_cnt].dci_pdu[0] = dci_decoded_output[current_thread_id][3];
2970
#ifdef DEBUG_DCI_DECODING
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          printf("DCI => %x,%x,%x,%x\n",dci_decoded_output[current_thread_id][0],
                  dci_decoded_output[current_thread_id][1],
                  dci_decoded_output[current_thread_id][2],
                  dci_decoded_output[current_thread_id][3]);
2975
#endif
2976
        } else {
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          dci_alloc[*dci_cnt].dci_pdu[7] = dci_decoded_output[current_thread_id][0];
          dci_alloc[*dci_cnt].dci_pdu[6] = dci_decoded_output[current_thread_id][1];
          dci_alloc[*dci_cnt].dci_pdu[5] = dci_decoded_output[current_thread_id][2];
          dci_alloc[*dci_cnt].dci_pdu[4] = dci_decoded_output[current_thread_id][3];
          dci_alloc[*dci_cnt].dci_pdu[3] = dci_decoded_output[current_thread_id][4];
          dci_alloc[*dci_cnt].dci_pdu[2] = dci_decoded_output[current_thread_id][5];
          dci_alloc[*dci_cnt].dci_pdu[1] = dci_decoded_output[current_thread_id][6];
          dci_alloc[*dci_cnt].dci_pdu[0] = dci_decoded_output[current_thread_id][7];
2985
#ifdef DEBUG_DCI_DECODING
2986
          printf("DCI => %x,%x,%x,%x,%x,%x,%x,%x\n",
2987 2988
              dci_decoded_output[current_thread_id][0],dci_decoded_output[current_thread_id][1],dci_decoded_output[current_thread_id][2],dci_decoded_output[current_thread_id][3],
              dci_decoded_output[current_thread_id][4],dci_decoded_output[current_thread_id][5],dci_decoded_output[current_thread_id][6],dci_decoded_output[current_thread_id][7]);
2989
#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
3001
          pdcch_vars[eNB_id]->nCCE[subframe]=CCEind;
3002
          *dci_cnt = *dci_cnt+1;
3003
        } else if (crc==pdcch_vars[eNB_id]->crnti) {
3004

3005
          if ((mode&UL_DCI)&&(format_c == format0)&&((dci_decoded_output[current_thread_id][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;
3010
              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;
3015
            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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            }
          }
        }

3027
        //LOG_I(PHY,"DCI decoding CRNTI  [format: %d, nCCE[subframe: %d]: %d ], AggregationLevel %d \n",format_c, subframe, pdcch_vars[eNB_id]->nCCE[subframe],L2);
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        //  memcpy(&dci_alloc[*dci_cnt].dci_pdu[0],dci_decoded_output,sizeof_bytes);



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

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

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

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

3050
#ifdef DEBUG_DCI_DECODING
3051 3052
        LOG_I(PHY,"[DCI search] Found DCI %d rnti %x Aggregation %d length %d format %s in CCE %d (CCEmap %x) candidate %d / %d \n",
              *dci_cnt,crc,1<<L,sizeof_bits,dci_format_strings[dci_alloc[*dci_cnt-1].format],CCEind,*CCEmap,m,nb_candidates );
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        dump_dci(frame_parms,&dci_alloc[*dci_cnt-1]);

3055
#endif
3056
         return;
3057 3058
      } // rnti match
    }  // CCEmap_cand == 0
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/*    
	if ( agregationLevel != 0xFF &&
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        (format_c == format0 && m==0 && si_rnti != SI_RNTI))
    {
      //Only valid for OAI : Save some processing time when looking for DCI format0. From the log we see the DCI only on candidate 0.
      return;
    }
3066
*/
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  } // candidate loop
}

3070 3071 3072 3073 3074 3075 3076 3077 3078 3079
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;
3080
  LTE_UE_PDCCH **pdcch_vars = ue->pdcch_vars[ue->current_thread_id[subframe]];
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  LTE_DL_FRAME_PARMS *frame_parms  = &ue->frame_parms;
  uint8_t mi = get_mi(&ue->frame_parms,subframe);
  uint16_t ra_rnti=99;
  uint8_t format0_found=0,format_c_found=0;
  uint8_t tmode = ue->transmission_mode[eNB_id];
  uint8_t frame_type = frame_parms->frame_type;
  uint8_t format0_size_bits=0,format0_size_bytes=0;
  uint8_t format1_size_bits=0,format1_size_bytes=0;
  dci_detect_mode_t mode = dci_detect_mode_select(&ue->frame_parms,subframe);

  switch (frame_parms->N_RB_DL) {
  case 6:
    if (frame_type == TDD) {
      format0_size_bits  = sizeof_DCI0_1_5MHz_TDD_1_6_t;
      format0_size_bytes = sizeof(DCI0_1_5MHz_TDD_1_6_t);
      format1_size_bits  = sizeof_DCI1_1_5MHz_TDD_t;
      format1_size_bytes = sizeof(DCI1_1_5MHz_TDD_t);

    } else {
      format0_size_bits  = sizeof_DCI0_1_5MHz_FDD_t;
      format0_size_bytes = sizeof(DCI0_1_5MHz_FDD_t);
      format1_size_bits  = sizeof_DCI1_1_5MHz_FDD_t;
      format1_size_bytes = sizeof(DCI1_1_5MHz_FDD_t);
    }

    break;

  case 25:
  default:
    if (frame_type == TDD) {
      format0_size_bits  = sizeof_DCI0_5MHz_TDD_1_6_t;
      format0_size_bytes = sizeof(DCI0_5MHz_TDD_1_6_t);
      format1_size_bits  = sizeof_DCI1_5MHz_TDD_t;
      format1_size_bytes = sizeof(DCI1_5MHz_TDD_t);
    } else {
      format0_size_bits  = sizeof_DCI0_5MHz_FDD_t;
      format0_size_bytes = sizeof(DCI0_5MHz_FDD_t);
      format1_size_bits  = sizeof_DCI1_5MHz_FDD_t;
      format1_size_bytes = sizeof(DCI1_5MHz_FDD_t);
    }

    break;

  case 50:
    if (frame_type == TDD) {
      format0_size_bits  = sizeof_DCI0_10MHz_TDD_1_6_t;
      format0_size_bytes = sizeof(DCI0_10MHz_TDD_1_6_t);
      format1_size_bits  = sizeof_DCI1_10MHz_TDD_t;
      format1_size_bytes = sizeof(DCI1_10MHz_TDD_t);

    } else {
      format0_size_bits  = sizeof_DCI0_10MHz_FDD_t;
      format0_size_bytes = sizeof(DCI0_10MHz_FDD_t);
      format1_size_bits  = sizeof_DCI1_10MHz_FDD_t;
      format1_size_bytes = sizeof(DCI1_10MHz_FDD_t);
    }

    break;

  case 100:
    if (frame_type == TDD) {
      format0_size_bits  = sizeof_DCI0_20MHz_TDD_1_6_t;
      format0_size_bytes = sizeof(DCI0_20MHz_TDD_1_6_t);
      format1_size_bits  = sizeof_DCI1_20MHz_TDD_t;
      format1_size_bytes = sizeof(DCI1_20MHz_TDD_t);
    } else {
      format0_size_bits  = sizeof_DCI0_20MHz_FDD_t;
      format0_size_bytes = sizeof(DCI0_20MHz_FDD_t);
      format1_size_bits  = sizeof_DCI1_20MHz_FDD_t;
      format1_size_bytes = sizeof(DCI1_20MHz_FDD_t);
    }

    break;
  }

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

  // Now check UE_SPEC format0/1A ue_spec search spaces at aggregation 8
  dci_decoding_procedure0(pdcch_vars,0,mode,
                          subframe,
                          dci_alloc,
                          eNB_id,
3164
                          ue->current_thread_id[subframe],
3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200
                          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,
3201
                                  ue->current_thread_id[subframe],
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                                  frame_parms,
                                  mi,
                                  ((ue->decode_SIB == 1) ? SI_RNTI : 0),
                                  ra_rnti,
                                  P_RNTI,
                                  0,
                                  format1A,
                                  format1A,
                                  format1A,
                                  format1,
                                  format1_size_bits,
                                  format1_size_bytes,
                                  &dci_cnt,
                                  &format0_found,
                                  &format_c_found,
                                  &CCEmap0,
                                  &CCEmap1,
                                  &CCEmap2);

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

          if (dci_cnt>old_dci_cnt)
            return(dci_cnt);

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

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

  return(dci_cnt);

}

3245
uint16_t dci_decoding_procedure(PHY_VARS_UE *ue,
3246 3247 3248 3249 3250 3251
                                DCI_ALLOC_t *dci_alloc,
                                int do_common,
                                int16_t eNB_id,
                                uint8_t subframe)
{

3252 3253
  uint8_t  dci_cnt=0,old_dci_cnt=0;
  uint32_t CCEmap0=0,CCEmap1=0,CCEmap2=0;
3254
  LTE_UE_PDCCH **pdcch_vars = ue->pdcch_vars[ue->current_thread_id[subframe]];
3255 3256
  LTE_DL_FRAME_PARMS *frame_parms  = &ue->frame_parms;
  uint8_t mi = get_mi(&ue->frame_parms,subframe);
3257 3258
  uint16_t ra_rnti=99;
  uint8_t format0_found=0,format_c_found=0;
3259
  uint8_t tmode = ue->transmission_mode[eNB_id];
3260
  uint8_t frame_type = frame_parms->frame_type;
3261
  uint8_t format1A_size_bits=0,format1A_size_bytes=0;
3262
  uint8_t format1C_size_bits=0,format1C_size_bytes=0;
3263 3264 3265 3266
  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;
3267
  dci_detect_mode_t mode = dci_detect_mode_select(&ue->frame_parms,subframe);
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  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);
3274 3275
      format1C_size_bits  = sizeof_DCI1C_1_5MHz_t;
      format1C_size_bytes = sizeof(DCI1C_1_5MHz_t);
3276 3277 3278 3279
      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);
3280

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      if (frame_parms->nb_antenna_ports_eNB == 2) {
3282 3283 3284 3285
        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) {
3287 3288 3289 3290
        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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      }
3292
    } else {
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      format1A_size_bits  = sizeof_DCI1A_1_5MHz_FDD_t;
      format1A_size_bytes = sizeof(DCI1A_1_5MHz_FDD_t);
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      format1C_size_bits  = sizeof_DCI1C_1_5MHz_t;
      format1C_size_bytes = sizeof(DCI1C_1_5MHz_t);
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      format0_size_bits  = sizeof_DCI0_1_5MHz_FDD_t;
      format0_size_bytes = sizeof(DCI0_1_5MHz_FDD_t);
      format1_size_bits  = sizeof_DCI1_1_5MHz_FDD_t;
      format1_size_bytes = sizeof(DCI1_1_5MHz_FDD_t);
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      if (frame_parms->nb_antenna_ports_eNB == 2) {
3303 3304 3305 3306
        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) {
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        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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      }
3313
    }
3314

3315
    break;
3316

3317
  case 25:
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  default:
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    if (frame_type == TDD) {
      format1A_size_bits  = sizeof_DCI1A_5MHz_TDD_1_6_t;
      format1A_size_bytes = sizeof(DCI1A_5MHz_TDD_1_6_t);
3322 3323
      format1C_size_bits  = sizeof_DCI1C_5MHz_t;
      format1C_size_bytes = sizeof(DCI1C_5MHz_t);
3324 3325 3326 3327
      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);
3328

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      if (frame_parms->nb_antenna_ports_eNB == 2) {
3330 3331 3332 3333
        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) {
3335 3336 3337 3338
        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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      }
3340
    } else {
3341 3342
      format1A_size_bits  = sizeof_DCI1A_5MHz_FDD_t;
      format1A_size_bytes = sizeof(DCI1A_5MHz_FDD_t);
3343 3344
      format1C_size_bits  = sizeof_DCI1C_5MHz_t;
      format1C_size_bytes = sizeof(DCI1C_5MHz_t);
3345 3346 3347 3348
      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);
3349

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      if (frame_parms->nb_antenna_ports_eNB == 2) {
3351 3352 3353 3354
        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) {
3356 3357 3358 3359
        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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3360
      }
3361
    }
3362

3363
    break;
3364

3365 3366 3367 3368
  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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3369 3370
      format1C_size_bits  = sizeof_DCI1C_10MHz_t;
      format1C_size_bytes = sizeof(DCI1C_10MHz_t);
3371 3372 3373 3374
      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);
3375

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      if (frame_parms->nb_antenna_ports_eNB == 2) {
3377 3378 3379 3380
        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) {
3382 3383 3384 3385
        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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3386
      }
3387
    } else {
3388 3389
      format1A_size_bits  = sizeof_DCI1A_10MHz_FDD_t;
      format1A_size_bytes = sizeof(DCI1A_10MHz_FDD_t);
3390 3391
      format1C_size_bits  = sizeof_DCI1C_10MHz_t;
      format1C_size_bytes = sizeof(DCI1C_10MHz_t);
3392 3393 3394 3395
      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);
3396

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      if (frame_parms->nb_antenna_ports_eNB == 2) {
3398 3399 3400 3401
        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) {
3403 3404 3405 3406
        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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3407
      }
3408
    }
3409

3410 3411 3412 3413 3414 3415
    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);
3416 3417
      format1C_size_bits  = sizeof_DCI1C_20MHz_t;
      format1C_size_bytes = sizeof(DCI1C_20MHz_t);
3418 3419 3420 3421
      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);
3422

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3423
      if (frame_parms->nb_antenna_ports_eNB == 2) {
3424 3425 3426 3427
        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) {
3429 3430 3431 3432
        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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3433
      }
3434
    } else {
3435 3436
      format1A_size_bits  = sizeof_DCI1A_20MHz_FDD_t;
      format1A_size_bytes = sizeof(DCI1A_20MHz_FDD_t);
3437 3438
      format1C_size_bits  = sizeof_DCI1C_20MHz_t;
      format1C_size_bytes = sizeof(DCI1C_20MHz_t);
3439 3440 3441 3442
      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);
3443

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      if (frame_parms->nb_antenna_ports_eNB == 2) {
3445 3446 3447 3448
        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) {
3450 3451 3452 3453
        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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3454
      }
3455
    }
3456

3457 3458 3459
    break;
  }

3460
  if (do_common == 1) {
3461 3462 3463
#ifdef DEBUG_DCI_DECODING
    printf("[DCI search] doing common search/format0 aggregation 4\n");
#endif
3464

3465 3466
    if (ue->prach_resources[eNB_id])
      ra_rnti = ue->prach_resources[eNB_id]->ra_RNTI;
3467

3468
    // First check common search spaces at aggregation 4 (SI_RNTI, P_RNTI and RA_RNTI format 0/1A),
3469
    // and UE_SPEC format0 (PUSCH) too while we're at it
3470
    dci_decoding_procedure0(pdcch_vars,1,mode,subframe,
3471 3472
                            dci_alloc,
                            eNB_id,
3473
                            ue->current_thread_id[subframe],
3474 3475
                            frame_parms,
                            mi,
3476
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0) ,
3477
                            ra_rnti,
3478
			    P_RNTI,
3479 3480 3481
                            2,
                            format1A,
                            format1A,
3482
                            format1A,
3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494
                            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)))
3495
      return(dci_cnt);
3496

3497
    // Now check common search spaces at aggregation 4 (SI_RNTI,P_RNTI and RA_RNTI and C-RNTI format 1C),
3498
    // and UE_SPEC format0 (PUSCH) too while we're at it
3499
    dci_decoding_procedure0(pdcch_vars,1,mode,subframe,
3500 3501
                            dci_alloc,
                            eNB_id,
3502
                            ue->current_thread_id[subframe],
3503 3504
                            frame_parms,
                            mi,
3505
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3506
                            ra_rnti,
3507
			    P_RNTI,
3508 3509 3510 3511
                            2,
                            format1C,
                            format1C,
                            format1C,
3512
                            format1C,
3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525
                            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);

3526
    // Now check common search spaces at aggregation 8 (SI_RNTI,P_RNTI and RA_RNTI format 1A),
3527 3528 3529 3530 3531
    // 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
3532
    dci_decoding_procedure0(pdcch_vars,1,mode,subframe,
3533 3534
                            dci_alloc,
                            eNB_id,
3535
                            ue->current_thread_id[subframe],
3536 3537
                            frame_parms,
                            mi,
3538
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3539
			    P_RNTI,
3540 3541 3542 3543
                            ra_rnti,
                            3,
                            format1A,
                            format1A,
3544
                            format1A,
3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556
                            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)))
3557
      return(dci_cnt);
3558

3559 3560
    // 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
3561
    dci_decoding_procedure0(pdcch_vars,1,mode,subframe,
3562 3563
                            dci_alloc,
                            eNB_id,
3564
                            ue->current_thread_id[subframe],
3565 3566
                            frame_parms,
                            mi,
3567
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3568
                            ra_rnti,
3569 3570 3571
			    P_RNTI,
			    3,
                            format1C,
3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582
                            format1C,
                            format1C,
                            format1C,
                            format1C_size_bits,
                            format1C_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);
3583 3584 3585 3586
    //#endif

  }

3587
  if (ue->UE_mode[eNB_id] <= PRACH)
3588 3589
    return(dci_cnt);

3590 3591
  if (ue->prach_resources[eNB_id])
    ra_rnti = ue->prach_resources[eNB_id]->ra_RNTI;
3592

3593
  // Now check UE_SPEC format0/1A ue_spec search spaces at aggregation 8
3594
  //  printf("[DCI search] Format 0/1A aggregation 8\n");
3595
  dci_decoding_procedure0(pdcch_vars,0,mode,
3596 3597 3598
                          subframe,
                          dci_alloc,
                          eNB_id,
3599
                          ue->current_thread_id[subframe],
3600 3601
                          frame_parms,
                          mi,
3602
                          ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3603
                          ra_rnti,
3604
			  P_RNTI,
3605
			  0,
3606
                          format1A,
3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619
                          format1A,
                          format1A,
                          format0,
                          format0_size_bits,
                          format0_size_bytes,
                          &dci_cnt,
                          &format0_found,
                          &format_c_found,
                          &CCEmap0,
                          &CCEmap1,
                          &CCEmap2);

  if ((CCEmap0==0xffff)||
3620 3621
      ((format0_found==1)&&(format_c_found==1)))
    return(dci_cnt);
3622

3623 3624 3625 3626
  //printf("[DCI search] Format 0 aggregation 1 dci_cnt %d\n",dci_cnt);

  if (dci_cnt == 0)
  {
3627
  // Now check UE_SPEC format 0 search spaces at aggregation 4
3628
  dci_decoding_procedure0(pdcch_vars,0,mode,
3629 3630 3631
                          subframe,
                          dci_alloc,
                          eNB_id,
3632
                          ue->current_thread_id[subframe],
3633 3634
                          frame_parms,
                          mi,
3635
                          ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3636
                          ra_rnti,
3637
			  P_RNTI,
3638
			  1,
3639
                          format1A,
3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652
                          format1A,
                          format1A,
                          format0,
                          format0_size_bits,
                          format0_size_bytes,
                          &dci_cnt,
                          &format0_found,
                          &format_c_found,
                          &CCEmap0,
                          &CCEmap1,
                          &CCEmap2);

  if ((CCEmap0==0xffff)||
3653 3654 3655
      ((format0_found==1)&&(format_c_found==1)))
    return(dci_cnt);

3656

3657 3658 3659 3660 3661
  //printf("[DCI search] Format 0 aggregation 2 dci_cnt %d\n",dci_cnt);
  }

  if (dci_cnt == 0)
  {
3662
  // Now check UE_SPEC format 0 search spaces at aggregation 2
3663
  dci_decoding_procedure0(pdcch_vars,0,mode,
3664 3665 3666
                          subframe,
                          dci_alloc,
                          eNB_id,
3667
                          ue->current_thread_id[subframe],
3668 3669
                          frame_parms,
                          mi,
3670
                          ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3671
                          ra_rnti,
3672
			  P_RNTI,
3673
                          2,
3674 3675
                          format1A,
                          format1A,
3676
                          format1A,
3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687
                          format0,
                          format0_size_bits,
                          format0_size_bytes,
                          &dci_cnt,
                          &format0_found,
                          &format_c_found,
                          &CCEmap0,
                          &CCEmap1,
                          &CCEmap2);

  if ((CCEmap0==0xffff)||
3688 3689 3690
      ((format0_found==1)&&(format_c_found==1)))
    return(dci_cnt);

3691 3692 3693 3694 3695
  //printf("[DCI search] Format 0 aggregation 4 dci_cnt %d\n",dci_cnt);
  }

  if (dci_cnt == 0)
  {
3696
  // Now check UE_SPEC format 0 search spaces at aggregation 1
3697
  dci_decoding_procedure0(pdcch_vars,0,mode,
3698 3699 3700
                          subframe,
                          dci_alloc,
                          eNB_id,
3701
                          ue->current_thread_id[subframe],
3702 3703
                          frame_parms,
                          mi,
3704
                          ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3705
                          ra_rnti,
3706
			  P_RNTI,
3707
                          3,
3708 3709
                          format1A,
                          format1A,
3710
                          format1A,
3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721
                          format0,
                          format0_size_bits,
                          format0_size_bytes,
                          &dci_cnt,
                          &format0_found,
                          &format_c_found,
                          &CCEmap0,
                          &CCEmap1,
                          &CCEmap2);

  if ((CCEmap0==0xffff)||
3722 3723 3724
      ((format0_found==1)&&(format_c_found==1)))
    return(dci_cnt);

3725
  //printf("[DCI search] Format 0 aggregation 8 dci_cnt %d\n",dci_cnt);
3726

3727
  }
3728
  // These are for CRNTI based on transmission mode
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3729
  if ((tmode < 3) || (tmode == 7)) {
3730
    // Now check UE_SPEC format 1 search spaces at aggregation 1
3731
    old_dci_cnt=dci_cnt;
3732
    dci_decoding_procedure0(pdcch_vars,0,mode,subframe,
3733 3734
                            dci_alloc,
                            eNB_id,
3735
                            ue->current_thread_id[subframe],
3736 3737
                            frame_parms,
                            mi,
3738
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3739
                            ra_rnti,
3740
			    P_RNTI,
3741 3742 3743
                            0,
                            format1A,
                            format1A,
3744
                            format1A,
3745 3746 3747 3748 3749 3750 3751 3752 3753
                            format1,
                            format1_size_bits,
                            format1_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);
3754
    //printf("[DCI search] Format 1 aggregation 1 dci_cnt %d\n",dci_cnt);
3755 3756 3757

    if ((CCEmap0==0xffff) ||
        (format_c_found==1))
3758
      return(dci_cnt);
3759

3760 3761
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);
3762 3763

    // Now check UE_SPEC format 1 search spaces at aggregation 2
3764
    old_dci_cnt=dci_cnt;
3765
    dci_decoding_procedure0(pdcch_vars,0,mode,subframe,
3766 3767
                            dci_alloc,
                            eNB_id,
3768
                            ue->current_thread_id[subframe],
3769 3770
                            frame_parms,
                            mi,
3771
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3772
                            ra_rnti,
3773
			    P_RNTI,
3774 3775 3776
                            1,
                            format1A,
                            format1A,
3777
                            format1A,
3778 3779 3780 3781 3782 3783 3784 3785 3786
                            format1,
                            format1_size_bits,
                            format1_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);
3787
    //printf("[DCI search] Format 1 aggregation 2 dci_cnt %d\n",dci_cnt);
3788 3789 3790

    if ((CCEmap0==0xffff)||
        (format_c_found==1))
3791
      return(dci_cnt);
3792

3793
    if (dci_cnt>old_dci_cnt)
3794
      return(dci_cnt);
3795

3796
    // Now check UE_SPEC format 1 search spaces at aggregation 4
3797
    old_dci_cnt=dci_cnt;
3798
    dci_decoding_procedure0(pdcch_vars,0,mode,subframe,
3799 3800
                            dci_alloc,
                            eNB_id,
3801
                            ue->current_thread_id[subframe],
3802 3803
                            frame_parms,
                            mi,
3804
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3805
                            ra_rnti,
3806 3807 3808
			    P_RNTI,
			    2,
                            format1A,
3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819
                            format1A,
                            format1A,
                            format1,
                            format1_size_bits,
                            format1_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);
3820
    //printf("[DCI search] Format 1 aggregation 4 dci_cnt %d\n",dci_cnt);
3821 3822 3823

    if ((CCEmap0==0xffff)||
        ((format0_found==1)&&(format_c_found==1)))
3824
      return(dci_cnt);
3825

3826 3827 3828 3829 3830 3831
    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;
3832
    dci_decoding_procedure0(pdcch_vars,0,mode,subframe,
3833 3834
                            dci_alloc,
                            eNB_id,
3835
                            ue->current_thread_id[subframe],
3836 3837
                            frame_parms,
                            mi,
3838
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3839
                            ra_rnti,
3840
			    P_RNTI,
3841 3842 3843
                            3,
                            format1A,
                            format1A,
3844
                            format1A,
3845 3846 3847 3848 3849 3850 3851 3852 3853
                            format1,
                            format1_size_bits,
                            format1_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);
3854
    //printf("[DCI search] Format 1 aggregation 8 dci_cnt %d\n",dci_cnt);
3855 3856 3857

    if ((CCEmap0==0xffff)||
        ((format0_found==1)&&(format_c_found==1)))
3858
      return(dci_cnt);
3859

3860 3861
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);
3862 3863 3864

    //#endif //ALL_AGGREGATION
  } else if (tmode == 3) {
3865 3866


hbilel's avatar
hbilel committed
3867
    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);
3868
    // Now check UE_SPEC format 2A_2A search spaces at aggregation 1
hbilel's avatar
hbilel committed
3869
    old_dci_cnt=dci_cnt;
3870
    dci_decoding_procedure0(pdcch_vars,0,mode,
3871 3872 3873
                            subframe,
                            dci_alloc,
                            eNB_id,
3874
                            ue->current_thread_id[subframe],
3875 3876
                            frame_parms,
                            mi,
3877
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3878
                            ra_rnti,
hbilel's avatar
hbilel committed
3879
                            P_RNTI,
3880 3881 3882
                            0,
                            format1A,
                            format1A,
3883
                            format1A,
3884 3885 3886 3887 3888 3889 3890 3891 3892 3893
                            format2A,
                            format2A_size_bits,
                            format2A_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);

hbilel's avatar
hbilel committed
3894
    LOG_D(PHY," format 2A_2A search CCEmap0 %x, format0_found %d, format_c_found %d \n", CCEmap0, format0_found, format_c_found);
3895 3896
    if ((CCEmap0==0xffff)||
        ((format0_found==1)&&(format_c_found==1)))
3897
      return(dci_cnt);
3898

hbilel's avatar
hbilel committed
3899
    LOG_D(PHY," format 2A_2A search dci_cnt %d, old_dci_cn t%d \n", dci_cnt, old_dci_cnt);
3900 3901 3902
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

3903
    // Now check UE_SPEC format 2 search spaces at aggregation 2
hbilel's avatar
hbilel committed
3904
    LOG_D(PHY," Now check UE_SPEC format 2A_2A search aggregation 2 dci length: %d[bits] %d[bytes]\n",format2A_size_bits,format2A_size_bytes);
hbilel's avatar
hbilel committed
3905
    old_dci_cnt=dci_cnt;
3906
    dci_decoding_procedure0(pdcch_vars,0,mode,
3907 3908 3909
                            subframe,
                            dci_alloc,
                            eNB_id,
3910
                            ue->current_thread_id[subframe],
3911 3912
                            frame_parms,
                            mi,
3913
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3914
                            ra_rnti,
3915
			    P_RNTI,
3916 3917 3918
                            1,
                            format1A,
                            format1A,
3919
                            format1A,
3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931
                            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)))
3932
      return(dci_cnt);
3933

hbilel's avatar
hbilel committed
3934
    LOG_D(PHY," format 2A_2A search dci_cnt %d, old_dci_cn t%d \n", dci_cnt, old_dci_cnt);
3935 3936 3937
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

3938
    // Now check UE_SPEC format 2_2A search spaces at aggregation 4
hbilel's avatar
hbilel committed
3939 3940
    LOG_D(PHY," Now check UE_SPEC format 2_2A search spaces at aggregation 4 \n");
    old_dci_cnt=dci_cnt;
3941
    dci_decoding_procedure0(pdcch_vars,0,mode,
3942 3943 3944
                            subframe,
                            dci_alloc,
                            eNB_id,
3945
                            ue->current_thread_id[subframe],
3946 3947
                            frame_parms,
                            mi,
3948
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3949
                            ra_rnti,
hbilel's avatar
hbilel committed
3950
                            P_RNTI,
3951 3952 3953
                            2,
                            format1A,
                            format1A,
3954
                            format1A,
3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966
                            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)))
3967
      return(dci_cnt);
3968

hbilel's avatar
hbilel committed
3969
    LOG_D(PHY," format 2A_2A search dci_cnt %d, old_dci_cn t%d \n", dci_cnt, old_dci_cnt);
3970 3971 3972 3973
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

    //#ifdef ALL_AGGREGATION
3974
    // Now check UE_SPEC format 2_2A search spaces at aggregation 8
hbilel's avatar
hbilel committed
3975
    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
3976
    old_dci_cnt=dci_cnt;
3977
    dci_decoding_procedure0(pdcch_vars,0,mode,
3978 3979 3980
                            subframe,
                            dci_alloc,
                            eNB_id,
3981
                            ue->current_thread_id[subframe],
3982 3983
                            frame_parms,
                            mi,
3984
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
3985
                            ra_rnti,
3986
			    P_RNTI,
3987 3988 3989
                            3,
                            format1A,
                            format1A,
3990
                            format1A,
3991 3992 3993 3994 3995 3996 3997 3998 3999
                            format2A,
                            format2A_size_bits,
                            format2A_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);
4000
    //#endif
hbilel's avatar
hbilel committed
4001 4002 4003 4004 4005 4006 4007
    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);
4008
  } else if (tmode == 4) {
4009

4010
    // Now check UE_SPEC format 2_2A search spaces at aggregation 1
hbilel's avatar
hbilel committed
4011
    old_dci_cnt=dci_cnt;
4012
    dci_decoding_procedure0(pdcch_vars,0,mode,
4013 4014 4015
                            subframe,
                            dci_alloc,
                            eNB_id,
4016
                            ue->current_thread_id[subframe],
4017 4018
                            frame_parms,
                            mi,
4019
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
4020
                            ra_rnti,
4021
			    P_RNTI,
4022 4023 4024
                            0,
                            format1A,
                            format1A,
4025
                            format1A,
4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037
                            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)))
4038
      return(dci_cnt);
4039

4040 4041 4042
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

4043
    // Now check UE_SPEC format 2 search spaces at aggregation 2
hbilel's avatar
hbilel committed
4044
    old_dci_cnt=dci_cnt;
4045
    dci_decoding_procedure0(pdcch_vars,0,mode,
4046 4047 4048
                            subframe,
                            dci_alloc,
                            eNB_id,
4049
                            ue->current_thread_id[subframe],
4050 4051
                            frame_parms,
                            mi,
4052
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
4053
                            ra_rnti,
4054
			    P_RNTI,
4055 4056 4057
                            1,
                            format1A,
                            format1A,
4058
                            format1A,
4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070
                            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)))
4071
      return(dci_cnt);
4072

4073 4074 4075
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

4076
    // Now check UE_SPEC format 2_2A search spaces at aggregation 4
hbilel's avatar
hbilel committed
4077
    old_dci_cnt=dci_cnt;
4078
    dci_decoding_procedure0(pdcch_vars,0,mode,
4079 4080 4081
                            subframe,
                            dci_alloc,
                            eNB_id,
4082
                            ue->current_thread_id[subframe],
4083 4084
                            frame_parms,
                            mi,
4085
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
4086
                            ra_rnti,
4087
			    P_RNTI,
4088 4089 4090
                            2,
                            format1A,
                            format1A,
4091
                            format1A,
4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103
                            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)))
4104
      return(dci_cnt);
4105

4106 4107 4108 4109
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);

    //#ifdef ALL_AGGREGATION
4110
    // Now check UE_SPEC format 2_2A search spaces at aggregation 8
hbilel's avatar
hbilel committed
4111
    old_dci_cnt=dci_cnt;
4112
    dci_decoding_procedure0(pdcch_vars,0,mode,
4113 4114 4115
                            subframe,
                            dci_alloc,
                            eNB_id,
4116
                            ue->current_thread_id[subframe],
4117 4118
                            frame_parms,
                            mi,
4119
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
4120
                            ra_rnti,
4121
			    P_RNTI,
4122 4123 4124
                            3,
                            format1A,
                            format1A,
4125
                            format1A,
4126 4127 4128 4129 4130 4131 4132 4133 4134
                            format2,
                            format2_size_bits,
                            format2_size_bytes,
                            &dci_cnt,
                            &format0_found,
                            &format_c_found,
                            &CCEmap0,
                            &CCEmap1,
                            &CCEmap2);
4135
    //#endif
Xiwen JIANG's avatar
Xiwen JIANG committed
4136
  } else if ((tmode==5) || (tmode==6)) { // This is MU-MIMO
4137

4138
    // Now check UE_SPEC format 1E_2A_M10PRB search spaces aggregation 1
4139
#ifdef DEBUG_DCI_DECODING
4140
    LOG_I(PHY," MU-MIMO check UE_SPEC format 1E_2A_M10PRB\n");
4141
#endif
hbilel's avatar
hbilel committed
4142
    old_dci_cnt=dci_cnt;
4143
    dci_decoding_procedure0(pdcch_vars,0,mode,
4144 4145 4146
                            subframe,
                            dci_alloc,
                            eNB_id,
4147
                            ue->current_thread_id[subframe],
4148 4149
                            frame_parms,
                            mi,
4150
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
4151
                            ra_rnti,
4152
			    P_RNTI,
4153 4154 4155
                            0,
                            format1A,
                            format1A,
4156
                            format1A,
4157 4158 4159 4160 4161 4162 4163 4164 4165 4166 4167 4168 4169
                            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)))
4170
      return(dci_cnt);
4171

4172 4173
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);
4174 4175

    // Now check UE_SPEC format 1E_2A_M10PRB search spaces aggregation 2
hbilel's avatar
hbilel committed
4176
    old_dci_cnt=dci_cnt;
4177
    dci_decoding_procedure0(pdcch_vars,0,mode,
4178 4179 4180
                            subframe,
                            dci_alloc,
                            eNB_id,
4181
                            ue->current_thread_id[subframe],
4182 4183
                            frame_parms,
                            mi,
4184
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
4185
                            ra_rnti,
4186
			    P_RNTI,
4187 4188 4189
                            1,
                            format1A,
                            format1A,
4190
                            format1A,
4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202 4203
                            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);
4204

4205 4206
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);
4207

4208
    // Now check UE_SPEC format 1E_2A_M10PRB search spaces aggregation 4
hbilel's avatar
hbilel committed
4209
    old_dci_cnt=dci_cnt;
4210
    dci_decoding_procedure0(pdcch_vars,0,mode,
4211 4212 4213
                            subframe,
                            dci_alloc,
                            eNB_id,
4214
                            ue->current_thread_id[subframe],
4215 4216
                            frame_parms,
                            mi,
4217
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
4218
                            ra_rnti,
4219
			    P_RNTI,
4220 4221 4222
                            2,
                            format1A,
                            format1A,
4223
                            format1A,
4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236
                            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);
4237

4238 4239
    if (dci_cnt>old_dci_cnt)
      return(dci_cnt);
4240

4241 4242 4243
    //#ifdef ALL_AGGREGATION

    // Now check UE_SPEC format 1E_2A_M10PRB search spaces at aggregation 8
hbilel's avatar
hbilel committed
4244
    old_dci_cnt=dci_cnt;
4245
    dci_decoding_procedure0(pdcch_vars,0,mode,
4246 4247 4248
                            subframe,
                            dci_alloc,
                            eNB_id,
4249
                            ue->current_thread_id[subframe],
4250 4251
                            frame_parms,
                            mi,
4252
                            ((ue->decode_SIB == 1) ? SI_RNTI : 0),
4253
                            ra_rnti,
4254
			    P_RNTI,
4255 4256 4257
                            3,
                            format1A,
                            format1A,
4258
                            format1A,
4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278
                            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

  }
4279 4280 4281 4282 4283

  return(dci_cnt);
}

#ifdef PHY_ABSTRACTION
4284
uint16_t dci_decoding_procedure_emul(LTE_UE_PDCCH **pdcch_vars,
4285 4286 4287 4288 4289 4290 4291
                                     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)
{

4292
  uint8_t  dci_cnt=0,i;
4293

4294 4295 4296 4297
  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);

4298
  for (i=num_common_dci; i<(num_ue_spec_dci+num_common_dci); i++) {
4299
    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,
4300 4301
          dci_alloc_tx[i].dci_pdu[0]&0x80);

4302
    if (dci_alloc_tx[i].rnti == pdcch_vars[eNB_id]->crnti) {
4303 4304 4305 4306 4307 4308 4309 4310 4311
      memcpy(dci_alloc_rx+dci_cnt,dci_alloc_tx+i,sizeof(DCI_ALLOC_t));
      dci_cnt++;
    }
  }


  return(dci_cnt);
}
#endif