nr_dlsch_demodulation.c 107 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
/*
 * 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
 */

/*! \file PHY/LTE_TRANSPORT/dlsch_demodulation.c
 * \brief Top-level routines for demodulating the PDSCH physical channel from 38-211, V15.2 2018-06
 * \author H.Wang
 * \date 2018
 * \version 0.1
 * \company Eurecom
 * \note
 * \warning
 */
#include "PHY/defs_nr_UE.h"
#include "PHY/phy_extern_nr_ue.h"
cig's avatar
cig committed
33
#include "PHY/NR_TRANSPORT/nr_transport_proto.h"
34 35 36 37 38 39
#include "nr_transport_proto_ue.h"
//#include "SCHED/defs.h"
//#include "PHY/defs.h"
//#include "extern.h"
#include "PHY/sse_intrin.h"
#include "T.h"
Laurent's avatar
Laurent committed
40
#include "openair1/PHY/NR_TRANSPORT/nr_dlsch.h"
41 42 43 44 45 46 47 48 49 50 51

#ifndef USER_MODE
#define NOCYGWIN_STATIC static
#else
#define NOCYGWIN_STATIC
#endif

/* dynamic shift for LLR computation for TM3/4
 * set as command line argument, see lte-softmodem.c
 * default value: 0
 */
Hongzhi Wang's avatar
Hongzhi Wang committed
52
int16_t nr_dlsch_demod_shift = 0;
53 54 55
//int16_t interf_unaw_shift = 13;

//#define DEBUG_HARQ
cig's avatar
cig committed
56 57 58
//#define DEBUG_PHY
//#define DEBUG_DLSCH_DEMOD
//#define DEBUG_PDSCH_RX
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86

// [MCS][i_mod (0,1,2) = (2,4,6)]
//unsigned char offset_mumimo_llr_drange_fix=0;
//inferference-free case
/*unsigned char interf_unaw_shift_tm4_mcs[29]={5, 3, 4, 3, 3, 2, 1, 1, 2, 0, 1, 1, 1, 1, 0, 0,
                                             1, 1, 1, 1, 0, 2, 1, 0, 1, 0, 1, 0, 0} ;*/

//unsigned char interf_unaw_shift_tm1_mcs[29]={5, 5, 4, 3, 3, 3, 2, 2, 4, 4, 2, 3, 3, 3, 1, 1,
//                                          0, 1, 1, 2, 5, 4, 4, 6, 5, 1, 0, 5, 6} ; // mcs 21, 26, 28 seem to be errorneous

/*
unsigned char offset_mumimo_llr_drange[29][3]={{8,8,8},{7,7,7},{7,7,7},{7,7,7},{6,6,6},{6,6,6},{6,6,6},{5,5,5},{4,4,4},{1,2,4}, // QPSK
{5,5,4},{5,5,5},{5,5,5},{3,3,3},{2,2,2},{2,2,2},{2,2,2}, // 16-QAM
{2,2,1},{3,3,3},{3,3,3},{3,3,1},{2,2,2},{2,2,2},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0}}; //64-QAM
*/
 /*
 //first optimization try
 unsigned char offset_mumimo_llr_drange[29][3]={{7, 8, 7},{6, 6, 7},{6, 6, 7},{6, 6, 6},{5, 6, 6},{5, 5, 6},{5, 5, 6},{4, 5, 4},{4, 3, 4},{3, 2, 2},{6, 5, 5},{5, 4, 4},{5, 5, 4},{3, 3, 2},{2, 2, 1},{2, 1, 1},{2, 2, 2},{3, 3, 3},{3, 3, 2},{3, 3, 2},{3, 2, 1},{2, 2, 2},{2, 2, 2},{0, 0, 0},{0, 0, 0},{0, 0, 0},{0, 0, 0},{0, 0, 0}};
 */
 //second optimization try
 /*
   unsigned char offset_mumimo_llr_drange[29][3]={{5, 8, 7},{4, 6, 8},{3, 6, 7},{7, 7, 6},{4, 7, 8},{4, 7, 4},{6, 6, 6},{3, 6, 6},{3, 6, 6},{1, 3, 4},{1, 1, 0},{3, 3, 2},{3, 4, 1},{4, 0, 1},{4, 2, 2},{3, 1, 2},{2, 1, 0},{2, 1, 1},{1, 0, 1},{1, 0, 1},{0, 0, 0},{1, 0, 0},{0, 0, 0},{0, 1, 0},{1, 0, 0},{0, 0, 0},{0, 0, 0},{0, 0, 0},{0, 0, 0}};  w
 */
//unsigned char offset_mumimo_llr_drange[29][3]= {{0, 6, 5},{0, 4, 5},{0, 4, 5},{0, 5, 4},{0, 5, 6},{0, 5, 3},{0, 4, 4},{0, 4, 4},{0, 3, 3},{0, 1, 2},{1, 1, 0},{1, 3, 2},{3, 4, 1},{2, 0, 0},{2, 2, 2},{1, 1, 1},{2, 1, 0},{2, 1, 1},{1, 0, 1},{1, 0, 1},{0, 0, 0},{1, 0, 0},{0, 0, 0},{0, 1, 0},{1, 0, 0},{0, 0, 0},{0, 0, 0},{0, 0, 0},{0, 0, 0}};


extern void print_shorts(char *s,int16_t *x);

laurent's avatar
laurent committed
87
static void nr_dlsch_dual_stream_correlation_core(int **dl_ch_estimates_ext,
88 89 90 91 92 93 94
						  int **dl_ch_estimates_ext_i,
						  int **dl_ch_rho_ext,
						  unsigned char n_tx,
						  unsigned char n_rx,
						  unsigned char output_shift,
						  int length,
						  int start_point);
laurent's avatar
laurent committed
95 96

static void nr_dlsch_layer_demapping(int16_t **llr_cw,
97 98 99 100
				     uint8_t Nl,
				     uint8_t mod_order,
				     uint16_t length,
				     int16_t **llr_layers);
101 102

int nr_rx_pdsch(PHY_VARS_NR_UE *ue,
103 104 105 106 107 108 109 110 111 112
		PDSCH_t type,
		unsigned char eNB_id,
		unsigned char eNB_id_i, //if this == ue->n_connected_eNB, we assume MU interference
		uint32_t frame,
		uint8_t nr_tti_rx,
		unsigned char symbol,
		unsigned char first_symbol_flag,
		RX_type_t rx_type,
		unsigned char i_mod,
		unsigned char harq_pid)
113 114 115 116 117 118 119 120 121
{

  NR_UE_COMMON *common_vars  = &ue->common_vars;
  NR_UE_PDSCH **pdsch_vars;
  NR_DL_FRAME_PARMS *frame_parms    = &ue->frame_parms;
  PHY_NR_MEASUREMENTS *measurements = &ue->measurements;
  NR_UE_DLSCH_t   **dlsch;

  int avg[4];
Hongzhi Wang's avatar
Hongzhi Wang committed
122 123
//  int avg_0[2];
//  int avg_1[2];
124 125 126 127 128

#if UE_TIMING_TRACE
  uint8_t slot = 0;
#endif

laurent's avatar
laurent committed
129
  unsigned char aatx=0,aarx=0;
130

131
  unsigned short nb_rb = 0, round;
Hongzhi Wang's avatar
Hongzhi Wang committed
132
  int avgs = 0;// rb;
133
  NR_DL_UE_HARQ_t *dlsch0_harq, *dlsch1_harq = NULL;
134

cig's avatar
cig committed
135
  uint8_t beamforming_mode = 0;
136 137 138 139 140 141 142 143

  int32_t **rxdataF_comp_ptr;
  int32_t **dl_ch_mag_ptr;
  int32_t codeword_TB0 = -1;
  int32_t codeword_TB1 = -1;

  //to be updated higher layer
  unsigned short start_rb = 0;
hongzhi wang's avatar
hongzhi wang committed
144
  unsigned short nb_rb_pdsch = 50;
hongzhi wang's avatar
hongzhi wang committed
145 146
  int16_t  *pllr_symbol_cw0;
  int16_t  *pllr_symbol_cw1;
147 148
  int16_t  *pllr_symbol_layer0;
  int16_t  *pllr_symbol_layer1;
yilmazt's avatar
yilmazt committed
149 150
  //int16_t  *pllr_symbol_cw0_deint;
  //int16_t  *pllr_symbol_cw1_deint;
hongzhi wang's avatar
hongzhi wang committed
151
  uint32_t llr_offset_symbol;
yilmazt's avatar
yilmazt committed
152
  //uint16_t bundle_L = 2;
153
  uint8_t pilots=0;
154 155
  uint16_t n_tx=1, n_rx=1;
  int32_t median[16];
156
  uint32_t len;
157

158 159
  switch (type) {
  case SI_PDSCH:
160
    pdsch_vars = ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]];
161 162
    dlsch = &ue->dlsch_SI[eNB_id];
    dlsch0_harq = dlsch[0]->harq_processes[harq_pid];
cig's avatar
cig committed
163

164 165 166
    break;

  case RA_PDSCH:
167
    pdsch_vars = ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]];
168 169
    dlsch = &ue->dlsch_ra[eNB_id];
    dlsch0_harq = dlsch[0]->harq_processes[harq_pid];
cig's avatar
cig committed
170

171 172 173 174 175
    break;

  case PDSCH:
    pdsch_vars = ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]];
    dlsch = ue->dlsch[ue->current_thread_id[nr_tti_rx]][eNB_id];
176 177
    dlsch0_harq = dlsch[0]->harq_processes[harq_pid];
    dlsch1_harq = dlsch[1]->harq_processes[harq_pid];
cig's avatar
cig committed
178 179 180
    beamforming_mode = ue->transmission_mode[eNB_id] < 7 ? 0 :ue->transmission_mode[eNB_id];
    break;

181 182 183
  default:
    LOG_E(PHY, "[UE][FATAL] nr_tti_rx %d: Unknown PDSCH format %d\n", nr_tti_rx, type);
    return -1;
cig's avatar
cig committed
184 185 186
    break;
  }

187
  if (dlsch0_harq && dlsch1_harq){
188

cig's avatar
cig committed
189
    LOG_D(PHY,"AbsSubframe %d.%d / Sym %d harq_pid %d, harq status %d.%d \n", frame, nr_tti_rx, symbol, harq_pid, dlsch0_harq->status, dlsch1_harq->status);
190 191 192 193

    if ((dlsch0_harq->status == ACTIVE) && (dlsch1_harq->status == ACTIVE)){
      codeword_TB0 = dlsch0_harq->codeword;
      codeword_TB1 = dlsch1_harq->codeword;
194 195
      dlsch0_harq = dlsch[codeword_TB0]->harq_processes[harq_pid];
      dlsch1_harq = dlsch[codeword_TB1]->harq_processes[harq_pid];
196 197

      #ifdef DEBUG_HARQ
cig's avatar
cig committed
198
        printf("[DEMOD] I am assuming both TBs are active, in cw0 %d and cw1 %d \n", codeword_TB0, codeword_TB1);
199 200 201 202
      #endif

    } else if ((dlsch0_harq->status == ACTIVE) && (dlsch1_harq->status != ACTIVE) ) {
      codeword_TB0 = dlsch0_harq->codeword;
cig's avatar
cig committed
203
      dlsch0_harq = dlsch[codeword_TB0]->harq_processes[harq_pid];
204
      dlsch1_harq = NULL;
205 206

      #ifdef DEBUG_HARQ
cig's avatar
cig committed
207
        printf("[DEMOD] I am assuming only TB0 is active, in cw %d \n", codeword_TB0);
208 209 210 211 212
      #endif

    } else if ((dlsch0_harq->status != ACTIVE) && (dlsch1_harq->status == ACTIVE)){
      codeword_TB1 = dlsch1_harq->codeword;
      dlsch0_harq  = NULL;
cig's avatar
cig committed
213
      dlsch1_harq  = dlsch[codeword_TB1]->harq_processes[harq_pid];
214 215

      #ifdef DEBUG_HARQ
cig's avatar
cig committed
216
        printf("[DEMOD] I am assuming only TB1 is active, it is in cw %d\n", codeword_TB1);
217 218
      #endif

219 220
      LOG_E(PHY, "[UE][FATAL] DLSCH: TB0 not active and TB1 active case is not supported\n");
      return -1;
221 222 223

    } else {
      LOG_E(PHY,"[UE][FATAL] nr_tti_rx %d: no active DLSCH\n", nr_tti_rx);
224 225
      return(-1);
    }
cig's avatar
cig committed
226
  } else if (dlsch0_harq) {
227
    if (dlsch0_harq->status == ACTIVE) {
cig's avatar
cig committed
228 229
      codeword_TB0 = dlsch0_harq->codeword;
      dlsch0_harq = dlsch[0]->harq_processes[harq_pid];
230

cig's avatar
cig committed
231 232 233
      #ifdef DEBUG_HARQ
        printf("[DEMOD] I am assuming only TB0 is active\n");
      #endif
234 235 236 237
    } else {
      LOG_E(PHY,"[UE][FATAL] nr_tti_rx %d: no active DLSCH\n", nr_tti_rx);
      return (-1);
    }
cig's avatar
cig committed
238
  } else {
239 240 241
    LOG_E(PHY, "Done\n");
    return -1;
  }
Raphael Defosseux's avatar
Raphael Defosseux committed
242

243 244 245 246 247 248 249
  dlsch0_harq->Qm = nr_get_Qm_dl(dlsch[0]->harq_processes[harq_pid]->mcs, dlsch[0]->harq_processes[harq_pid]->mcs_table);
  dlsch0_harq->R = nr_get_code_rate_dl(dlsch[0]->harq_processes[harq_pid]->mcs, dlsch[0]->harq_processes[harq_pid]->mcs_table);

  #ifdef DEBUG_HARQ
    printf("[DEMOD] MIMO mode = %d\n", dlsch0_harq->mimo_mode);
    printf("[DEMOD] cw for TB0 = %d, cw for TB1 = %d\n", codeword_TB0, codeword_TB1);
  #endif
250

251 252 253
  start_rb = dlsch0_harq->start_rb;
  nb_rb_pdsch =  dlsch0_harq->nb_rb;

254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282
  DevAssert(dlsch0_harq);
  round = dlsch0_harq->round;
  //printf("round = %d\n", round);

  if (eNB_id > 2) {
    LOG_W(PHY,"dlsch_demodulation.c: Illegal eNB_id %d\n",eNB_id);
    return(-1);
  }

  if (!common_vars) {
    LOG_W(PHY,"dlsch_demodulation.c: Null common_vars\n");
    return(-1);
  }

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

  if (!pdsch_vars) {
    LOG_W(PHY,"dlsch_demodulation.c: Null pdsch_vars pointer\n");
    return(-1);
  }

  if (!frame_parms) {
    LOG_W(PHY,"dlsch_demodulation.c: Null frame_parms\n");
    return(-1);
  }

Hongzhi Wang's avatar
Hongzhi Wang committed
283
  if (dlsch0_harq->mimo_mode>NR_DUALSTREAM) {
284 285 286 287
    LOG_E(PHY,"This transmission mode is not yet supported!\n");
    return(-1);
  }

Hongzhi Wang's avatar
Hongzhi Wang committed
288
  if (dlsch0_harq->mimo_mode==NR_DUALSTREAM)  {
289 290 291 292
    DevAssert(dlsch1_harq);
  }

#if UE_TIMING_TRACE
293
  if(symbol > ue->frame_parms.symbols_per_slot>>1)
294 295 296 297 298 299 300 301
  {
      slot = 1;
  }
#endif

#ifdef DEBUG_HARQ
  printf("Demod  dlsch0_harq->pmi_alloc %d\n",  dlsch0_harq->pmi_alloc);
#endif
302

303
  pilots = ((1<<symbol)&dlsch0_harq->dlDmrsSymbPos)>0 ? 1 : 0;
304

305
  if (frame_parms->nb_antenna_ports_gNB>1 && beamforming_mode==0) {
306
#ifdef DEBUG_DLSCH_MOD
307
    LOG_I(PHY,"dlsch: using pmi %x (%p)\n",pmi2hex_2Ar1(dlsch0_harq->pmi_alloc),dlsch[0]);
308 309 310 311 312
#endif

#if UE_TIMING_TRACE
    start_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
#endif
313
    nb_rb = nr_dlsch_extract_rbs_dual(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[nr_tti_rx]].rxdataF,
314 315 316 317 318 319 320 321 322 323 324 325 326
				      pdsch_vars[eNB_id]->dl_ch_estimates,
				      pdsch_vars[eNB_id]->rxdataF_ext,
				      pdsch_vars[eNB_id]->dl_ch_estimates_ext,
				      dlsch0_harq->pmi_alloc,
				      pdsch_vars[eNB_id]->pmi_ext,
				      symbol,
				      pilots,
				      start_rb,
				      nb_rb_pdsch,
				      nr_tti_rx,
				      ue->high_speed_flag,
				      frame_parms,
				      dlsch0_harq->mimo_mode);
327
#ifdef DEBUG_DLSCH_MOD
328
      printf("dlsch: using pmi %lx, pmi_ext ",pmi2hex_2Ar1(dlsch0_harq->pmi_alloc));
329 330 331 332 333 334 335
       for (rb=0;rb<nb_rb;rb++)
          printf("%d",pdsch_vars[eNB_id]->pmi_ext[rb]);
       printf("\n");
#endif

   if (rx_type >= rx_IC_single_stream) {
      if (eNB_id_i<ue->n_connected_eNB) // we are in TM5
336
      nb_rb = nr_dlsch_extract_rbs_dual(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[nr_tti_rx]].rxdataF,
337
    		  	  	  	  	  	       pdsch_vars[eNB_id]->dl_ch_estimates,
338 339 340 341 342
                                       pdsch_vars[eNB_id_i]->rxdataF_ext,
                                       pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
                                       dlsch0_harq->pmi_alloc,
                                       pdsch_vars[eNB_id_i]->pmi_ext,
                                       symbol,
343 344 345
                                       pilots,
                                       start_rb,
                                       nb_rb_pdsch,
346 347 348 349 350
                                       nr_tti_rx,
                                       ue->high_speed_flag,
                                       frame_parms,
                                       dlsch0_harq->mimo_mode);
      else
351
        nb_rb = nr_dlsch_extract_rbs_dual(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[nr_tti_rx]].rxdataF,
352
        							   pdsch_vars[eNB_id]->dl_ch_estimates,
353 354 355 356 357
                                       pdsch_vars[eNB_id_i]->rxdataF_ext,
                                       pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
                                       dlsch0_harq->pmi_alloc,
                                       pdsch_vars[eNB_id_i]->pmi_ext,
                                       symbol,
358 359 360
                                       pilots,
                                       start_rb,
                                       nb_rb_pdsch,
361 362 363 364 365
                                       nr_tti_rx,
                                       ue->high_speed_flag,
                                       frame_parms,
                                       dlsch0_harq->mimo_mode);
    }
366
  } else if (beamforming_mode==0) { //else if nb_antennas_ports_gNB==1 && beamforming_mode == 0
hongzhi wang's avatar
hongzhi wang committed
367
		  //printf("start nr dlsch extract nr_tti_rx %d thread id %d \n", nr_tti_rx, ue->current_thread_id[nr_tti_rx]);
368
    nb_rb = nr_dlsch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[nr_tti_rx]].rxdataF,
369 370 371 372 373 374 375 376 377 378 379 380
					pdsch_vars[eNB_id]->dl_ch_estimates,
					pdsch_vars[eNB_id]->rxdataF_ext,
					pdsch_vars[eNB_id]->dl_ch_estimates_ext,
					dlsch0_harq->pmi_alloc,
					pdsch_vars[eNB_id]->pmi_ext,
					symbol,
					pilots,
					start_rb,
					nb_rb_pdsch,
					nr_tti_rx,
					ue->high_speed_flag,
					frame_parms);
381
  
Hongzhi Wang's avatar
Hongzhi Wang committed
382
  } /*else if(beamforming_mode>7) {
383 384 385 386 387 388 389 390 391
    LOG_W(PHY,"dlsch_demodulation: beamforming mode not supported yet.\n");
  }*/

  //printf("nb_rb = %d, eNB_id %d\n",nb_rb,eNB_id);
  if (nb_rb==0) {
    LOG_D(PHY,"dlsch_demodulation.c: nb_rb=0\n");
    return(-1);
  }

392
  len = (pilots==1)? (nb_rb*6):(nb_rb*12);
393
  
394
#if UE_TIMING_TRACE
395
  stop_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
396
#if DISABLE_LOG_X
397 398
  printf("[AbsSFN %u.%d] Slot%d Symbol %d Flag %d type %d: Pilot/Data extraction %5.2f \n",
	 frame,nr_tti_rx,slot,symbol,ue->high_speed_flag,type,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
399
#else
400 401
  LOG_I(PHY, "[AbsSFN %u.%d] Slot%d Symbol %d Flag %d type %d: Pilot/Data extraction %5.2f \n",
	frame,nr_tti_rx,slot,symbol,ue->high_speed_flag,type,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
402 403
#endif
#endif
404
  
405
#if UE_TIMING_TRACE
406
  start_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
407
#endif
408
  n_tx = frame_parms->nb_antenna_ports_gNB;
409
  n_rx = frame_parms->nb_antennas_rx;
410
  
411
  nr_dlsch_scale_channel(pdsch_vars[eNB_id]->dl_ch_estimates_ext,
412 413 414 415 416
			 frame_parms,
			 dlsch,
			 symbol,
			 pilots,
			 nb_rb);
417 418 419 420

#if UE_TIMING_TRACE
    stop_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
#if DISABLE_LOG_X
frtabu's avatar
frtabu committed
421
    printf("[AbsSFN %u.%d] Slot%d Symbol %d: Channel Scale %5.2f \n",frame,nr_tti_rx,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
422
#else
frtabu's avatar
frtabu committed
423
    LOG_I(PHY, "[AbsSFN %u.%d] Slot%d Symbol %d: Channel Scale  %5.2f \n",frame,nr_tti_rx,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
424 425 426 427 428 429 430 431
#endif
#endif

#if UE_TIMING_TRACE
    start_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
#endif
  if (first_symbol_flag==1) {
    if (beamforming_mode==0){
Hongzhi Wang's avatar
Hongzhi Wang committed
432
      if (dlsch0_harq->mimo_mode<NR_DUALSTREAM) {
433
        nr_dlsch_channel_level(pdsch_vars[eNB_id]->dl_ch_estimates_ext,
434 435 436 437 438
			       frame_parms,
			       avg,
			       symbol,
			       len,
			       nb_rb);
439
        avgs = 0;
440
        for (aatx=0;aatx<frame_parms->nb_antenna_ports_gNB;aatx++)
441 442 443
          for (aarx=0;aarx<frame_parms->nb_antennas_rx;aarx++)
            avgs = cmax(avgs,avg[(aatx<<1)+aarx]);

444
        pdsch_vars[eNB_id]->log2_maxh = (log2_approx(avgs)/2)+3;
445
     }
Hongzhi Wang's avatar
Hongzhi Wang committed
446
     else if (dlsch0_harq->mimo_mode == NR_DUALSTREAM)
447
     {
448 449 450 451
    	 nr_dlsch_channel_level_median(pdsch_vars[eNB_id]->dl_ch_estimates_ext,
    	                             median,
    	                             n_tx,
    	                             n_rx,
452
    	                             2*len,// subcarriers Re Im
453 454 455 456 457 458 459 460 461 462 463 464
    	                             0);

    	  for (aatx = 0; aatx < n_tx; ++aatx)
    	  {
    	    for (aarx = 0; aarx < n_rx; ++aarx)
    	    {
    	      avgs = cmax(avgs, median[aatx*n_rx + aarx]);
    	    }
    	  }

    	  pdsch_vars[eNB_id]->log2_maxh = (log2_approx(avgs)/2) + 1; // this might need to be tuned

Hongzhi Wang's avatar
Hongzhi Wang committed
465
     }
466
    }
467 468 469 470 471 472
    //#ifdef UE_DEBUG_TRACE
    LOG_D(PHY,"[DLSCH] AbsSubframe %d.%d log2_maxh = %d [log2_maxh0 %d log2_maxh1 %d] (%d,%d)\n",
	  frame%1024,nr_tti_rx, pdsch_vars[eNB_id]->log2_maxh,
	  pdsch_vars[eNB_id]->log2_maxh0,
	  pdsch_vars[eNB_id]->log2_maxh1,
	  avg[0],avgs);
473
    //LOG_D(PHY,"[DLSCH] mimo_mode = %d\n", dlsch0_harq->mimo_mode);
474
    //#endif
475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499

    //wait until pdcch is decoded
    //proc->channel_level = 1;
  }

  /*
  uint32_t wait = 0;
  while(proc->channel_level == 0)
  {
      usleep(1);
      wait++;
  }
  */

#if T_TRACER
    if (type == PDSCH)
    {
      T(T_UE_PHY_PDSCH_ENERGY, T_INT(eNB_id),  T_INT(0), T_INT(frame%1024), T_INT(nr_tti_rx),
                               T_INT(avg[0]), T_INT(avg[1]),    T_INT(avg[2]),             T_INT(avg[3]));
    }
#endif

#if UE_TIMING_TRACE
    stop_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
#if DISABLE_LOG_X
frtabu's avatar
frtabu committed
500
    printf("[AbsSFN %u.%d] Slot%d Symbol %d first_symbol_flag %d: Channel Level %5.2f \n",frame,nr_tti_rx,slot,symbol,first_symbol_flag,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
501
#else
frtabu's avatar
frtabu committed
502
    LOG_I(PHY, "[AbsSFN %u.%d] Slot%d Symbol %d first_symbol_flag %d: Channel Level  %5.2f \n",frame,nr_tti_rx,slot,symbol,first_symbol_flag,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
503 504 505 506 507 508 509 510
#endif
#endif


#if UE_TIMING_TRACE
    start_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
#endif
// Now channel compensation
Hongzhi Wang's avatar
Hongzhi Wang committed
511
  if (dlsch0_harq->mimo_mode<NR_DUALSTREAM) {
512 513 514 515 516 517 518 519
    nr_dlsch_channel_compensation(pdsch_vars[eNB_id]->rxdataF_ext,
                               pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                               pdsch_vars[eNB_id]->dl_ch_mag0,
                               pdsch_vars[eNB_id]->dl_ch_magb0,
                               pdsch_vars[eNB_id]->rxdataF_comp0,
                               (aatx>1) ? pdsch_vars[eNB_id]->rho : NULL,
                               frame_parms,
                               symbol,
520
                               pilots,
521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561
                               first_symbol_flag,
                               dlsch0_harq->Qm,
                               nb_rb,
                               pdsch_vars[eNB_id]->log2_maxh,
                               measurements); // log2_maxh+I0_shift
 /*if (symbol == 5) {
     write_output("rxF_comp_d.m","rxF_c_d",&pdsch_vars[eNB_id]->rxdataF_comp0[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
 } */

    /*if ((rx_type==rx_IC_single_stream) &&
        (eNB_id_i<ue->n_connected_eNB)) {
         nr_dlsch_channel_compensation(pdsch_vars[eNB_id_i]->rxdataF_ext,
                                 pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
                                 pdsch_vars[eNB_id_i]->dl_ch_mag0,
                                 pdsch_vars[eNB_id_i]->dl_ch_magb0,
                                 pdsch_vars[eNB_id_i]->rxdataF_comp0,
                                 (aatx>1) ? pdsch_vars[eNB_id_i]->rho : NULL,
                                 frame_parms,
                                 symbol,
                                 first_symbol_flag,
                                 i_mod,
                                 nb_rb,
                                 pdsch_vars[eNB_id]->log2_maxh,
                                 measurements); // log2_maxh+I0_shift
#ifdef DEBUG_PHY
      if (symbol == 5) {
        write_output("rxF_comp_d.m","rxF_c_d",&pdsch_vars[eNB_id]->rxdataF_comp0[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
        write_output("rxF_comp_i.m","rxF_c_i",&pdsch_vars[eNB_id_i]->rxdataF_comp0[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
      }
#endif

      dlsch_dual_stream_correlation(frame_parms,
                                    symbol,
                                    nb_rb,
                                    pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                    pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
                                    pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                                    pdsch_vars[eNB_id]->log2_maxh);
    }*/
  }

Hongzhi Wang's avatar
Hongzhi Wang committed
562
  else if (dlsch0_harq->mimo_mode == NR_DUALSTREAM){
563 564 565 566 567 568 569 570 571 572
	  nr_dlsch_channel_compensation_core(pdsch_vars[eNB_id]->rxdataF_ext,
			  	  	  	  	  	  	  	pdsch_vars[eNB_id]->dl_ch_estimates_ext,
										pdsch_vars[eNB_id]->dl_ch_mag0,
										pdsch_vars[eNB_id]->dl_ch_magb0,
										pdsch_vars[eNB_id]->rxdataF_comp0, //rxdataF_comp
	                                    NULL,
	                                    n_tx,
	                                    n_rx,
										dlsch0_harq->Qm,
										pdsch_vars[eNB_id]->log2_maxh,
573
	                                    2*len, // subcarriers Re Im
574
	                                    0); // we start from the beginning of the vector
575 576 577 578 579 580 581
  /*   if (symbol == 5) {
     write_output("rxF_comp_d00.m","rxF_c_d00",&pdsch_vars[eNB_id]->rxdataF_comp0[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);// should be QAM
     write_output("rxF_comp_d01.m","rxF_c_d01",&pdsch_vars[eNB_id]->rxdataF_comp0[1][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be almost 0
     write_output("rxF_comp_d10.m","rxF_c_d10",&pdsch_vars[eNB_id]->rxdataF_comp1[harq_pid][round][0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be almost 0
     write_output("rxF_comp_d11.m","rxF_c_d11",&pdsch_vars[eNB_id]->rxdataF_comp1[harq_pid][round][1][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be QAM
        } */
      // compute correlation between signal and interference channels (rho12 and rho21)
582 583 584 585 586 587
        nr_dlsch_dual_stream_correlation_core(pdsch_vars[eNB_id]->dl_ch_estimates_ext,
        									 &(pdsch_vars[eNB_id]->dl_ch_estimates_ext[2]),
											 pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                                             n_tx,
                                             n_rx,
											 pdsch_vars[eNB_id]->log2_maxh,
588
                                             2*len,
589
                                             0);
590
        //printf("rho stream1 =%d\n", &pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round] );
591 592 593 594 595 596
        nr_dlsch_dual_stream_correlation_core(&(pdsch_vars[eNB_id]->dl_ch_estimates_ext[2]),
        									pdsch_vars[eNB_id]->dl_ch_estimates_ext,
											pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                                            n_tx,
                                            n_rx,
       										pdsch_vars[eNB_id]->log2_maxh,
597
                                            2*len,
598
                                            0);
599 600 601 602 603 604 605 606 607
    //  printf("rho stream2 =%d\n",&pdsch_vars[eNB_id]->dl_ch_rho2_ext );
      //printf("TM3 log2_maxh : %d\n",pdsch_vars[eNB_id]->log2_maxh);
  /*     if (symbol == 5) {
     write_output("rho0_0.m","rho0_0",&pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round][0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);// should be QAM
     write_output("rho2_0.m","rho2_0",&pdsch_vars[eNB_id]->dl_ch_rho2_ext[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be almost 0
     write_output("rho0_1.m.m","rho0_1",&pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round][1][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be almost 0
     write_output("rho2_1.m","rho2_1",&pdsch_vars[eNB_id]->dl_ch_rho2_ext[1][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be QAM
        } */

608
    }
609 610 611 612

#if UE_TIMING_TRACE
    stop_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
#if DISABLE_LOG_X
frtabu's avatar
frtabu committed
613
    printf("[AbsSFN %u.%d] Slot%d Symbol %d log2_maxh %d channel_level %d: Channel Comp %5.2f \n",frame,nr_tti_rx,slot,symbol,pdsch_vars[eNB_id]->log2_maxh,proc->channel_level,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
614
#else
frtabu's avatar
frtabu committed
615
    LOG_I(PHY, "[AbsSFN %u.%d] Slot%d Symbol %d log2_maxh %d channel_level %d: Channel Comp  %5.2f \n",frame,nr_tti_rx,slot,symbol,pdsch_vars[eNB_id]->log2_maxh,proc->channel_level,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
616 617 618 619 620 621 622 623
#endif
#endif
// MRC
#if UE_TIMING_TRACE
    start_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
#endif

    if (frame_parms->nb_antennas_rx > 1) {
Hongzhi Wang's avatar
Hongzhi Wang committed
624
    if (dlsch0_harq->mimo_mode == NR_DUALSTREAM){
625 626 627 628 629 630 631 632 633 634
        nr_dlsch_detection_mrc_core(pdsch_vars[eNB_id]->rxdataF_comp0,
                                   NULL,
								   pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
								   pdsch_vars[eNB_id]->dl_ch_rho2_ext,
								   pdsch_vars[eNB_id]->dl_ch_mag0,
								   pdsch_vars[eNB_id]->dl_ch_magb0,
                                   NULL,
                                   NULL,
                                   n_tx,
                                   n_rx,
635
                                   2*len,
636
                                   0);
637 638 639 640 641
    /*   if (symbol == 5) {
     write_output("rho0_mrc.m","rho0_0",&pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round][0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);// should be QAM
     write_output("rho2_mrc.m","rho2_0",&pdsch_vars[eNB_id]->dl_ch_rho2_ext[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be almost 0
        } */
    }
642
    }
643

hongzhi wang's avatar
hongzhi wang committed
644
      //printf("start compute LLR\n");
Hongzhi Wang's avatar
Hongzhi Wang committed
645
  if (dlsch0_harq->mimo_mode == NR_DUALSTREAM)  {
646 647 648 649 650 651 652 653
    rxdataF_comp_ptr = pdsch_vars[eNB_id]->rxdataF_comp1[harq_pid][round];
    dl_ch_mag_ptr = pdsch_vars[eNB_id]->dl_ch_mag1[harq_pid][round];
  }
  else {
    rxdataF_comp_ptr = pdsch_vars[eNB_id_i]->rxdataF_comp0;
    dl_ch_mag_ptr = pdsch_vars[eNB_id_i]->dl_ch_mag0;
    //i_mod should have been passed as a parameter
  }
hongzhi wang's avatar
hongzhi wang committed
654
  
655 656 657
#if UE_TIMING_TRACE
    stop_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
#if DISABLE_LOG_X
frtabu's avatar
frtabu committed
658
    printf("[AbsSFN %u.%d] Slot%d Symbol %d: Channel Combine %5.2f \n",frame,nr_tti_rx,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
659
#else
frtabu's avatar
frtabu committed
660
    LOG_I(PHY, "[AbsSFN %u.%d] Slot%d Symbol %d: Channel Combine  %5.2f \n",frame,nr_tti_rx,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
661 662 663 664
#endif
#endif

#if UE_TIMING_TRACE
665

666 667 668 669 670
    start_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
#endif
  //printf("LLR dlsch0_harq->Qm %d rx_type %d cw0 %d cw1 %d symbol %d \n",dlsch0_harq->Qm,rx_type,codeword_TB0,codeword_TB1,symbol);
  // compute LLRs
  // -> // compute @pointer where llrs should filled for this ofdm-symbol
hongzhi wang's avatar
hongzhi wang committed
671

672
    if (first_symbol_flag==1) pdsch_vars[eNB_id]->llr_offset[symbol-1] = 0;
673 674 675 676 677 678 679 680 681 682 683 684 685
    llr_offset_symbol = pdsch_vars[eNB_id]->llr_offset[symbol-1];
    //pllr_symbol_cw0_deint  = (int8_t*)pdsch_vars[eNB_id]->llr[0];
    //pllr_symbol_cw1_deint  = (int8_t*)pdsch_vars[eNB_id]->llr[1];
    pllr_symbol_layer0 = pdsch_vars[eNB_id]->layer_llr[0];
    pllr_symbol_layer1 = pdsch_vars[eNB_id]->layer_llr[1];
    pllr_symbol_layer0 += llr_offset_symbol;
    pllr_symbol_layer1 += llr_offset_symbol;
    pllr_symbol_cw0 = pdsch_vars[eNB_id]->llr[0];
    pllr_symbol_cw1 = pdsch_vars[eNB_id]->llr[1];
    pllr_symbol_cw0 += llr_offset_symbol;
    pllr_symbol_cw1 += llr_offset_symbol;
    
    pdsch_vars[eNB_id]->llr_offset[symbol] = len*dlsch0_harq->Qm + llr_offset_symbol;
hongzhi wang's avatar
hongzhi wang committed
686
 
687
  LOG_D(PHY,"compute LLRs [symbol %d] NbRB %d Qm %d LLRs-Length %d LLR-Offset %d energy %d\n",
hongzhi wang's avatar
hongzhi wang committed
688
             symbol,
689 690 691
             nb_rb,dlsch0_harq->Qm,
             pdsch_vars[eNB_id]->llr_length[symbol],
             pdsch_vars[eNB_id]->llr_offset[symbol],
laurent's avatar
laurent committed
692
	     signal_energy(pdsch_vars[eNB_id]->rxdataF_comp0[0], 7*2*frame_parms->N_RB_DL*12));
Laurent's avatar
Laurent committed
693 694


hongzhi wang's avatar
hongzhi wang committed
695
             /*printf("compute LLRs [symbol %d] NbRB %d Qm %d LLRs-Length %d LLR-Offset %d @LLR Buff %p @LLR Buff(symb) %p\n",
hongzhi wang's avatar
hongzhi wang committed
696 697 698 699
             symbol,
             nb_rb,dlsch0_harq->Qm,
             pdsch_vars[eNB_id]->llr_length[symbol],
             pdsch_vars[eNB_id]->llr_offset[symbol],
hongzhi wang's avatar
hongzhi wang committed
700 701
             pdsch_vars[eNB_id]->llr[0],
             pllr_symbol_cw0);*/
702 703 704 705

  switch (dlsch0_harq->Qm) {
  case 2 :
    if ((rx_type==rx_standard) || (codeword_TB1 == -1)) {
Hongzhi Wang's avatar
Hongzhi Wang committed
706
        nr_dlsch_qpsk_llr(frame_parms,
707 708 709 710 711 712 713
			  pdsch_vars[eNB_id]->rxdataF_comp0,
			  pllr_symbol_cw0,
			  symbol,
			  len,
			  first_symbol_flag,
			  nb_rb,
			  beamforming_mode);
714 715 716

    } else if (codeword_TB0 == -1){

Hongzhi Wang's avatar
Hongzhi Wang committed
717
        nr_dlsch_qpsk_llr(frame_parms,
718
                       pdsch_vars[eNB_id]->rxdataF_comp0,
hongzhi wang's avatar
hongzhi wang committed
719
                       pllr_symbol_cw1,
720
                       symbol,
721
					   len,
722 723 724 725 726 727
                       first_symbol_flag,
                       nb_rb,
                       beamforming_mode);
    }
      else if (rx_type >= rx_IC_single_stream) {
        if (dlsch1_harq->Qm == 2) {
Hongzhi Wang's avatar
Hongzhi Wang committed
728
          nr_dlsch_qpsk_qpsk_llr(frame_parms,
729 730 731
                              pdsch_vars[eNB_id]->rxdataF_comp0,
                              rxdataF_comp_ptr,
                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
732
                              pdsch_vars[eNB_id]->layer_llr[0],
733
                              symbol,len,first_symbol_flag,nb_rb,
734 735 736
                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,nr_tti_rx,symbol),
                              pdsch_vars[eNB_id]->llr128);
          if (rx_type==rx_IC_dual_stream) {
Hongzhi Wang's avatar
Hongzhi Wang committed
737
            nr_dlsch_qpsk_qpsk_llr(frame_parms,
738 739 740
                                rxdataF_comp_ptr,
                                pdsch_vars[eNB_id]->rxdataF_comp0,
                                pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
741
                                pdsch_vars[eNB_id]->layer_llr[1],
742
                                symbol,len,first_symbol_flag,nb_rb,
743 744 745 746 747
                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,2,nr_tti_rx,symbol),
                                pdsch_vars[eNB_id]->llr128_2ndstream);
          }
        }
        else if (dlsch1_harq->Qm == 4) {
Hongzhi Wang's avatar
Hongzhi Wang committed
748
          nr_dlsch_qpsk_16qam_llr(frame_parms,
749 750 751 752
                               pdsch_vars[eNB_id]->rxdataF_comp0,
                               rxdataF_comp_ptr,//i
                               dl_ch_mag_ptr,//i
                               pdsch_vars[eNB_id]->dl_ch_rho2_ext,
753
                               pdsch_vars[eNB_id]->layer_llr[0],
754 755 756 757
                               symbol,first_symbol_flag,nb_rb,
                               adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,nr_tti_rx,symbol),
                               pdsch_vars[eNB_id]->llr128);
          if (rx_type==rx_IC_dual_stream) {
Hongzhi Wang's avatar
Hongzhi Wang committed
758
            nr_dlsch_16qam_qpsk_llr(frame_parms,
759 760 761 762
                                 rxdataF_comp_ptr,
                                 pdsch_vars[eNB_id]->rxdataF_comp0,//i
                                 dl_ch_mag_ptr,
                                 pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
763
                                 pdsch_vars[eNB_id]->layer_llr[1],
764 765 766 767 768 769
                                 symbol,first_symbol_flag,nb_rb,
                                 adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,4,nr_tti_rx,symbol),
                                 pdsch_vars[eNB_id]->llr128_2ndstream);
          }
        }
        else {
Hongzhi Wang's avatar
Hongzhi Wang committed
770
          nr_dlsch_qpsk_64qam_llr(frame_parms,
771 772 773 774
                               pdsch_vars[eNB_id]->rxdataF_comp0,
                               rxdataF_comp_ptr,//i
                               dl_ch_mag_ptr,//i
                               pdsch_vars[eNB_id]->dl_ch_rho2_ext,
775
                               pdsch_vars[eNB_id]->layer_llr[0],
776 777 778 779
                               symbol,first_symbol_flag,nb_rb,
                               adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,nr_tti_rx,symbol),
                               pdsch_vars[eNB_id]->llr128);
          if (rx_type==rx_IC_dual_stream) {
Hongzhi Wang's avatar
Hongzhi Wang committed
780
            nr_dlsch_64qam_qpsk_llr(frame_parms,
781 782 783 784
                                 rxdataF_comp_ptr,
                                 pdsch_vars[eNB_id]->rxdataF_comp0,//i
                                 dl_ch_mag_ptr,
                                 pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
785
                                 pdsch_vars[eNB_id]->layer_llr[1],
786 787 788 789 790 791 792 793 794
                                 symbol,first_symbol_flag,nb_rb,
                                 adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,6,nr_tti_rx,symbol),
                                 pdsch_vars[eNB_id]->llr128_2ndstream);
          }
        }
      }
    break;
  case 4 :
    if ((rx_type==rx_standard ) || (codeword_TB1 == -1)) {
Hongzhi Wang's avatar
Hongzhi Wang committed
795
      nr_dlsch_16qam_llr(frame_parms,
796 797 798
                      pdsch_vars[eNB_id]->rxdataF_comp0,
                      pdsch_vars[eNB_id]->llr[0],
                      pdsch_vars[eNB_id]->dl_ch_mag0,
799
                      symbol,len,first_symbol_flag,nb_rb,
800 801 802
                      pdsch_vars[eNB_id]->llr128,
                      beamforming_mode);
    } else if (codeword_TB0 == -1){
Hongzhi Wang's avatar
Hongzhi Wang committed
803
      nr_dlsch_16qam_llr(frame_parms,
804 805 806
                      pdsch_vars[eNB_id]->rxdataF_comp0,
                      pdsch_vars[eNB_id]->llr[1],
                      pdsch_vars[eNB_id]->dl_ch_mag0,
807
                      symbol,len,first_symbol_flag,nb_rb,
808 809 810 811 812
                      pdsch_vars[eNB_id]->llr128_2ndstream,
                      beamforming_mode);
    }
    else if (rx_type >= rx_IC_single_stream) {
      if (dlsch1_harq->Qm == 2) {
Hongzhi Wang's avatar
Hongzhi Wang committed
813
        nr_dlsch_16qam_qpsk_llr(frame_parms,
814 815 816 817
                             pdsch_vars[eNB_id]->rxdataF_comp0,
                             rxdataF_comp_ptr,//i
                             pdsch_vars[eNB_id]->dl_ch_mag0,
                             pdsch_vars[eNB_id]->dl_ch_rho2_ext,
818
                             pdsch_vars[eNB_id]->layer_llr[0],
819 820 821 822
                             symbol,first_symbol_flag,nb_rb,
                             adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,4,nr_tti_rx,symbol),
                             pdsch_vars[eNB_id]->llr128);
        if (rx_type==rx_IC_dual_stream) {
Hongzhi Wang's avatar
Hongzhi Wang committed
823
          nr_dlsch_qpsk_16qam_llr(frame_parms,
824 825 826 827
                               rxdataF_comp_ptr,
                               pdsch_vars[eNB_id]->rxdataF_comp0,//i
                               pdsch_vars[eNB_id]->dl_ch_mag0,//i
                               pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
828
                               pdsch_vars[eNB_id]->layer_llr[1],
829 830 831 832 833 834
                               symbol,first_symbol_flag,nb_rb,
                               adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,2,nr_tti_rx,symbol),
                               pdsch_vars[eNB_id]->llr128_2ndstream);
        }
      }
      else if (dlsch1_harq->Qm == 4) {
Hongzhi Wang's avatar
Hongzhi Wang committed
835
        nr_dlsch_16qam_16qam_llr(frame_parms,
836 837 838 839 840
                              pdsch_vars[eNB_id]->rxdataF_comp0,
                              rxdataF_comp_ptr,//i
                              pdsch_vars[eNB_id]->dl_ch_mag0,
                              dl_ch_mag_ptr,//i
                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
841
                              pdsch_vars[eNB_id]->layer_llr[0],
842
                              symbol,len,first_symbol_flag,nb_rb,
843 844 845
                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,4,nr_tti_rx,symbol),
                              pdsch_vars[eNB_id]->llr128);
        if (rx_type==rx_IC_dual_stream) {
Hongzhi Wang's avatar
Hongzhi Wang committed
846
          nr_dlsch_16qam_16qam_llr(frame_parms,
847 848 849 850 851
                                rxdataF_comp_ptr,
                                pdsch_vars[eNB_id]->rxdataF_comp0,//i
                                dl_ch_mag_ptr,
                                pdsch_vars[eNB_id]->dl_ch_mag0,//i
                                pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
852
                                pdsch_vars[eNB_id]->layer_llr[1],
853
                                symbol,len,first_symbol_flag,nb_rb,
854 855 856 857 858
                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,4,nr_tti_rx,symbol),
                                pdsch_vars[eNB_id]->llr128_2ndstream);
        }
      }
      else {
Hongzhi Wang's avatar
Hongzhi Wang committed
859
        nr_dlsch_16qam_64qam_llr(frame_parms,
860 861 862 863 864
                              pdsch_vars[eNB_id]->rxdataF_comp0,
                              rxdataF_comp_ptr,//i
                              pdsch_vars[eNB_id]->dl_ch_mag0,
                              dl_ch_mag_ptr,//i
                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
865
                              pdsch_vars[eNB_id]->layer_llr[0],
866 867 868 869
                              symbol,first_symbol_flag,nb_rb,
                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,4,nr_tti_rx,symbol),
                              pdsch_vars[eNB_id]->llr128);
        if (rx_type==rx_IC_dual_stream) {
Hongzhi Wang's avatar
Hongzhi Wang committed
870
          nr_dlsch_64qam_16qam_llr(frame_parms,
871 872 873 874 875
                                rxdataF_comp_ptr,
                                pdsch_vars[eNB_id]->rxdataF_comp0,
                                dl_ch_mag_ptr,
                                pdsch_vars[eNB_id]->dl_ch_mag0,
                                pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
876
                                pdsch_vars[eNB_id]->layer_llr[1],
877 878 879 880 881 882 883 884 885
                                symbol,first_symbol_flag,nb_rb,
                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,6,nr_tti_rx,symbol),
                                pdsch_vars[eNB_id]->llr128_2ndstream);
        }
      }
    }
    break;
  case 6 :
    if ((rx_type==rx_standard) || (codeword_TB1 == -1))  {
Hongzhi Wang's avatar
Hongzhi Wang committed
886
      nr_dlsch_64qam_llr(frame_parms,
887 888 889 890
                      pdsch_vars[eNB_id]->rxdataF_comp0,
                      (int16_t*)pllr_symbol_cw0,
                      pdsch_vars[eNB_id]->dl_ch_mag0,
                      pdsch_vars[eNB_id]->dl_ch_magb0,
891
                      symbol,len,first_symbol_flag,nb_rb,
892 893 894
                      pdsch_vars[eNB_id]->llr_offset[symbol],
                      beamforming_mode);
    } else if (codeword_TB0 == -1){
Hongzhi Wang's avatar
Hongzhi Wang committed
895
      nr_dlsch_64qam_llr(frame_parms,
896
                      pdsch_vars[eNB_id]->rxdataF_comp0,
hongzhi wang's avatar
hongzhi wang committed
897
                      pllr_symbol_cw1,
898 899
                      pdsch_vars[eNB_id]->dl_ch_mag0,
                      pdsch_vars[eNB_id]->dl_ch_magb0,
900
                      symbol,len,first_symbol_flag,nb_rb,
901 902 903 904 905
                      pdsch_vars[eNB_id]->llr_offset[symbol],
                      beamforming_mode);
    }
    else if (rx_type >= rx_IC_single_stream) {
      if (dlsch1_harq->Qm == 2) {
Hongzhi Wang's avatar
Hongzhi Wang committed
906
        nr_dlsch_64qam_qpsk_llr(frame_parms,
907 908 909 910
                             pdsch_vars[eNB_id]->rxdataF_comp0,
                             rxdataF_comp_ptr,//i
                             pdsch_vars[eNB_id]->dl_ch_mag0,
                             pdsch_vars[eNB_id]->dl_ch_rho2_ext,
911
                             pdsch_vars[eNB_id]->layer_llr[0],
912 913 914 915
                             symbol,first_symbol_flag,nb_rb,
                             adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,6,nr_tti_rx,symbol),
                             pdsch_vars[eNB_id]->llr128);
        if (rx_type==rx_IC_dual_stream) {
Hongzhi Wang's avatar
Hongzhi Wang committed
916
          nr_dlsch_qpsk_64qam_llr(frame_parms,
917 918 919 920
                               rxdataF_comp_ptr,
                               pdsch_vars[eNB_id]->rxdataF_comp0,//i
                               pdsch_vars[eNB_id]->dl_ch_mag0,
                               pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
921
                               pdsch_vars[eNB_id]->layer_llr[1],
922 923 924 925 926 927
                               symbol,first_symbol_flag,nb_rb,
                               adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,2,nr_tti_rx,symbol),
                               pdsch_vars[eNB_id]->llr128_2ndstream);
        }
      }
      else if (dlsch1_harq->Qm == 4) {
Hongzhi Wang's avatar
Hongzhi Wang committed
928
        nr_dlsch_64qam_16qam_llr(frame_parms,
929 930 931 932 933
                              pdsch_vars[eNB_id]->rxdataF_comp0,
                              rxdataF_comp_ptr,//i
                              pdsch_vars[eNB_id]->dl_ch_mag0,
                              dl_ch_mag_ptr,//i
                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
934
                              pdsch_vars[eNB_id]->layer_llr[0],
935 936 937 938
                              symbol,first_symbol_flag,nb_rb,
                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,6,nr_tti_rx,symbol),
                              pdsch_vars[eNB_id]->llr128);
        if (rx_type==rx_IC_dual_stream) {
Hongzhi Wang's avatar
Hongzhi Wang committed
939
          nr_dlsch_16qam_64qam_llr(frame_parms,
940 941 942 943 944
                                rxdataF_comp_ptr,
                                pdsch_vars[eNB_id]->rxdataF_comp0,//i
                                dl_ch_mag_ptr,
                                pdsch_vars[eNB_id]->dl_ch_mag0,//i
                                pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
945
                                pdsch_vars[eNB_id]->layer_llr[1],
946 947 948 949 950 951
                                symbol,first_symbol_flag,nb_rb,
                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,4,nr_tti_rx,symbol),
                                pdsch_vars[eNB_id]->llr128_2ndstream);
        }
      }
      else {
Hongzhi Wang's avatar
Hongzhi Wang committed
952
        nr_dlsch_64qam_64qam_llr(frame_parms,
953 954 955 956 957
                              pdsch_vars[eNB_id]->rxdataF_comp0,
                              rxdataF_comp_ptr,//i
                              pdsch_vars[eNB_id]->dl_ch_mag0,
                              dl_ch_mag_ptr,//i
                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
958
                              (int16_t*)pllr_symbol_layer0,
959
                              symbol,len,first_symbol_flag,nb_rb,
960 961 962
                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,6,nr_tti_rx,symbol),
                              pdsch_vars[eNB_id]->llr_offset[symbol]);
        if (rx_type==rx_IC_dual_stream) {
Hongzhi Wang's avatar
Hongzhi Wang committed
963
          nr_dlsch_64qam_64qam_llr(frame_parms,
964 965 966 967 968
                                rxdataF_comp_ptr,
                                pdsch_vars[eNB_id]->rxdataF_comp0,//i
                                dl_ch_mag_ptr,
                                pdsch_vars[eNB_id]->dl_ch_mag0,//i
                                pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
969
                                pllr_symbol_layer1,
970
                                symbol,len,first_symbol_flag,nb_rb,
971 972 973 974 975 976 977 978 979 980 981
                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,6,nr_tti_rx,symbol),
                                pdsch_vars[eNB_id]->llr_offset[symbol]);
        }
      }
    }
    break;
  default:
    LOG_W(PHY,"rx_dlsch.c : Unknown mod_order!!!!\n");
    return(-1);
    break;
  }
cig's avatar
cig committed
982

983
  if (dlsch1_harq) {
cig's avatar
cig committed
984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020
    switch (nr_get_Qm_dl(dlsch1_harq->mcs,dlsch1_harq->mcs_table)) {
      case 2 :
        if (rx_type==rx_standard) {
            nr_dlsch_qpsk_llr(frame_parms,
                              pdsch_vars[eNB_id]->rxdataF_comp0,
                              pllr_symbol_cw0,
                              symbol,len,first_symbol_flag,nb_rb,
                              beamforming_mode);
        }
        break;
      case 4:
        if (rx_type==rx_standard) {
          nr_dlsch_16qam_llr(frame_parms,
                             pdsch_vars[eNB_id]->rxdataF_comp0,
                             pdsch_vars[eNB_id]->llr[0],
                             pdsch_vars[eNB_id]->dl_ch_mag0,
                             symbol,len,first_symbol_flag,nb_rb,
                             pdsch_vars[eNB_id]->llr128,
                             beamforming_mode);
        }
        break;
      case 6 :
        if (rx_type==rx_standard) {
          nr_dlsch_64qam_llr(frame_parms,
                             pdsch_vars[eNB_id]->rxdataF_comp0,
                             pllr_symbol_cw0,
                             pdsch_vars[eNB_id]->dl_ch_mag0,
                             pdsch_vars[eNB_id]->dl_ch_magb0,
                             symbol,len,first_symbol_flag,nb_rb,
                             pdsch_vars[eNB_id]->llr_offset[symbol],
                             beamforming_mode);
        }
        break;
      default:
        LOG_W(PHY,"rx_dlsch.c : Unknown mod_order!!!!\n");
        return(-1);
        break;
1021
    }
1022
  }  
1023

hongzhi wang's avatar
hongzhi wang committed
1024
  //nr_dlsch_deinterleaving(symbol,bundle_L,(int16_t*)pllr_symbol_cw0,(int16_t*)pllr_symbol_cw0_deint, nb_rb_pdsch);
hongzhi wang's avatar
hongzhi wang committed
1025
  
1026 1027
 if (rx_type==rx_IC_dual_stream) {  
	nr_dlsch_layer_demapping(pdsch_vars[eNB_id]->llr,
1028 1029 1030 1031
				 dlsch[0]->harq_processes[harq_pid]->Nl,
				 dlsch[0]->harq_processes[harq_pid]->Qm,
				 dlsch[0]->harq_processes[harq_pid]->G,
				 pdsch_vars[eNB_id]->layer_llr);
1032 1033
 }

1034 1035 1036
#if UE_TIMING_TRACE
    stop_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
#if DISABLE_LOG_X
frtabu's avatar
frtabu committed
1037
    printf("[AbsSFN %u.%d] Slot%d Symbol %d: LLR Computation %5.2f \n",frame,nr_tti_rx,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
1038
#else
frtabu's avatar
frtabu committed
1039
    LOG_I(PHY, "[AbsSFN %u.%d] Slot%d Symbol %d: LLR Computation  %5.2f \n",frame,nr_tti_rx,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
1040 1041
#endif
#endif
cig's avatar
cig committed
1042

1043
// Please keep it: useful for debugging
cig's avatar
cig committed
1044 1045 1046
#ifdef DEBUG_PDSCH_RX
  char filename[40];
  uint8_t aa = 0;
1047

1048
  snprintf(filename, 40, "rxdataF0_symb_%d_nr_tti_rx_%d.m", symbol, nr_tti_rx);
cig's avatar
cig committed
1049
  write_output(filename, "rxdataF0", &common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[nr_tti_rx]].rxdataF[0][0], NR_SYMBOLS_PER_SLOT*frame_parms->ofdm_symbol_size, 1, 1);
1050

1051
  snprintf(filename, 40, "dl_ch_estimates0%d_symb_%d_nr_tti_rx_%d.m", aa, symbol, nr_tti_rx);
cig's avatar
cig committed
1052 1053
  write_output(filename, "dl_ch_estimates", &pdsch_vars[eNB_id]->dl_ch_estimates[aa][0], NR_SYMBOLS_PER_SLOT*frame_parms->ofdm_symbol_size, 1, 1);

1054
  snprintf(filename, 40, "rxdataF_ext0%d_symb_%d_nr_tti_rx_%d.m", aa, symbol, nr_tti_rx);
cig's avatar
cig committed
1055 1056
  write_output(filename, "rxdataF_ext", &pdsch_vars[eNB_id]->rxdataF_ext[aa][0], NR_SYMBOLS_PER_SLOT*frame_parms->N_RB_DL*NR_NB_SC_PER_RB, 1, 1);

1057
  snprintf(filename, 40, "dl_ch_estimates_ext0%d_symb_%d_nr_tti_rx_%d.m", aa, symbol, nr_tti_rx);
cig's avatar
cig committed
1058 1059
  write_output(filename, "dl_ch_estimates_ext00", &pdsch_vars[eNB_id]->dl_ch_estimates_ext[aa][0], NR_SYMBOLS_PER_SLOT*frame_parms->N_RB_DL*NR_NB_SC_PER_RB, 1, 1);

1060
  snprintf(filename, 40, "rxdataF_comp0%d_symb_%d_nr_tti_rx_%d.m", aa, symbol, nr_tti_rx);
cig's avatar
cig committed
1061
  write_output(filename, "rxdataF_comp00", &pdsch_vars[eNB_id]->rxdataF_comp0[aa][0], NR_SYMBOLS_PER_SLOT*frame_parms->N_RB_DL*NR_NB_SC_PER_RB, 1, 1);
1062

cig's avatar
cig committed
1063
  for (int i=0; i < 2; i++){
1064
    snprintf(filename, 40,  "llr%d_symb_%d_nr_tti_rx_%d.m", i, symbol, nr_tti_rx);
cig's avatar
cig committed
1065
    write_output(filename,"llr",  &pdsch_vars[eNB_id]->llr[i][0], (NR_SYMBOLS_PER_SLOT*nb_rb*NR_NB_SC_PER_RB*dlsch1_harq->Qm) - 4*(nb_rb*4*dlsch1_harq->Qm), 1, 0);
1066 1067 1068 1069 1070 1071
  }
#endif

#if T_TRACER
  T(T_UE_PHY_PDSCH_IQ, T_INT(eNB_id), T_INT(ue->Mod_id), T_INT(frame%1024),
    T_INT(nr_tti_rx), T_INT(nb_rb),
1072
    T_INT(frame_parms->N_RB_UL), T_INT(frame_parms->symbols_per_slot),
1073
    T_BUFFER(&pdsch_vars[eNB_id]->rxdataF_comp0[eNB_id][0],
1074
             2 * /* ulsch[UE_id]->harq_processes[harq_pid]->nb_rb */ frame_parms->N_RB_UL *12*frame_parms->symbols_per_slot*2));
1075 1076 1077 1078 1079
#endif
  return(0);

}

1080
void nr_dlsch_deinterleaving(uint8_t symbol,
1081
							uint8_t start_symbol,
1082 1083 1084
							uint16_t L,
							uint16_t *llr,
							uint16_t *llr_deint,
hongzhi wang's avatar
hongzhi wang committed
1085
							uint16_t nb_rb_pdsch)
1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097
{

  uint32_t bundle_idx, N_bundle, R, C, r,c;
  int32_t m,k;
  uint8_t nb_re;

  R=2;
  N_bundle = nb_rb_pdsch/L;
  C=N_bundle/R;

  uint32_t *bundle_deint = malloc(N_bundle*sizeof(uint32_t));

frtabu's avatar
frtabu committed
1098
  printf("N_bundle %u L %d nb_rb_pdsch %d\n",N_bundle, L,nb_rb_pdsch);
1099

1100
  if (symbol==start_symbol)
1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123
	  nb_re = 6;
  else
	  nb_re = 12;


  AssertFatal(llr!=NULL,"nr_dlsch_deinterleaving: FATAL llr is Null\n");


  for (c =0; c< C; c++){
	  for (r=0; r<R;r++){
		  bundle_idx = r*C+c;
		  bundle_deint[bundle_idx] = c*R+r;
		  //printf("c %u r %u bundle_idx %u bundle_deinter %u\n", c, r, bundle_idx, bundle_deint[bundle_idx]);
	  }
  }

  for (k=0; k<N_bundle;k++)
  {
	  for (m=0; m<nb_re*L;m++){
		  llr_deint[bundle_deint[k]*nb_re*L+m]= llr[k*nb_re*L+m];
		  //printf("k %d m %d bundle_deint %d llr_deint %d\n", k, m, bundle_deint[k], llr_deint[bundle_deint[k]*nb_re*L+m]);
	  }
  }
frtabu's avatar
frtabu committed
1124
  free(bundle_deint);
1125 1126
}

1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138
//==============================================================================================
// Pre-processing for LLR computation
//==============================================================================================

void nr_dlsch_channel_compensation(int **rxdataF_ext,
                                int **dl_ch_estimates_ext,
                                int **dl_ch_mag,
                                int **dl_ch_magb,
                                int **rxdataF_comp,
                                int **rho,
                                NR_DL_FRAME_PARMS *frame_parms,
                                unsigned char symbol,
1139
				uint8_t pilots,
1140 1141 1142 1143 1144 1145 1146 1147 1148 1149
                                uint8_t first_symbol_flag,
                                unsigned char mod_order,
                                unsigned short nb_rb,
                                unsigned char output_shift,
                                PHY_NR_MEASUREMENTS *measurements)
{

#if defined(__i386) || defined(__x86_64)

  unsigned short rb;
1150
  unsigned char aatx,aarx;
1151 1152
  __m128i *dl_ch128,*dl_ch128_2,*dl_ch_mag128,*dl_ch_mag128b,*rxdataF128,*rxdataF_comp128,*rho128;
  __m128i mmtmpD0,mmtmpD1,mmtmpD2,mmtmpD3,QAM_amp128,QAM_amp128b;
laurent's avatar
laurent committed
1153
  QAM_amp128b = _mm_setzero_si128();
1154

1155
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_gNB; aatx++) {
1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167
    if (mod_order == 4) {
      QAM_amp128 = _mm_set1_epi16(QAM16_n1);  // 2/sqrt(10)
      QAM_amp128b = _mm_setzero_si128();
    } else if (mod_order == 6) {
      QAM_amp128  = _mm_set1_epi16(QAM64_n1); //
      QAM_amp128b = _mm_set1_epi16(QAM64_n2);
    }

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

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

1168 1169 1170 1171 1172
      dl_ch128          = (__m128i *)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*nb_rb*12];
      dl_ch_mag128      = (__m128i *)&dl_ch_mag[(aatx<<1)+aarx][symbol*nb_rb*12];
      dl_ch_mag128b     = (__m128i *)&dl_ch_magb[(aatx<<1)+aarx][symbol*nb_rb*12];
      rxdataF128        = (__m128i *)&rxdataF_ext[aarx][symbol*nb_rb*12];
      rxdataF_comp128   = (__m128i *)&rxdataF_comp[(aatx<<1)+aarx][symbol*nb_rb*12];
1173 1174 1175 1176 1177 1178 1179


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

          mmtmpD0 = _mm_madd_epi16(dl_ch128[0],dl_ch128[0]);
1180
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
1181 1182

          mmtmpD1 = _mm_madd_epi16(dl_ch128[1],dl_ch128[1]);
1183
          mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380

          mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);

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

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

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

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

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

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


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

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

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

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

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

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

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

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

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

      }
    }
  }

  if (rho) {


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

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

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

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

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


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

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

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

      }

      if (first_symbol_flag==1) {
1381
        measurements->rx_correlation[0][aarx] = signal_energy(&rho[aarx][symbol*nb_rb*12],rb*12);
1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406
      }
    }
  }

  _mm_empty();
  _m_empty();

#elif defined(__arm__)


  unsigned short rb;
  unsigned char aatx,aarx,symbol_mod,pilots=0;

  int16x4_t *dl_ch128,*dl_ch128_2,*rxdataF128;
  int32x4_t mmtmpD0,mmtmpD1,mmtmpD0b,mmtmpD1b;
  int16x8_t *dl_ch_mag128,*dl_ch_mag128b,mmtmpD2,mmtmpD3,mmtmpD4;
  int16x8_t QAM_amp128,QAM_amp128b;
  int16x4x2_t *rxdataF_comp128,*rho128;

  int16_t conj[4]__attribute__((aligned(16))) = {1,-1,1,-1};
  int32x4_t output_shift128 = vmovq_n_s32(-(int32_t)output_shift);

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

  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
1407
    if (frame_parms->nb_antenna_ports_gNB==1) { // 10 out of 12 so don't reduce size
1408 1409 1410 1411 1412 1413 1414
      nb_rb=1+(5*nb_rb/6);
    }
    else {
      pilots=1;
    }
  }

1415
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_gNB; aatx++) {
1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590
    if (mod_order == 4) {
      QAM_amp128  = vmovq_n_s16(QAM16_n1);  // 2/sqrt(10)
      QAM_amp128b = vmovq_n_s16(0);
    } else if (mod_order == 6) {
      QAM_amp128  = vmovq_n_s16(QAM64_n1); //
      QAM_amp128b = vmovq_n_s16(QAM64_n2);
    }
    //    printf("comp: rxdataF_comp %p, symbol %d\n",rxdataF_comp[0],symbol);

    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      dl_ch128          = (int16x4_t*)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128      = (int16x8_t*)&dl_ch_mag[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128b     = (int16x8_t*)&dl_ch_magb[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
      rxdataF128        = (int16x4_t*)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12];
      rxdataF_comp128   = (int16x4x2_t*)&rxdataF_comp[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];

      for (rb=0; rb<nb_rb; rb++) {
  if (mod_order>2) {
    // get channel amplitude if not QPSK
    mmtmpD0 = vmull_s16(dl_ch128[0], dl_ch128[0]);
    // mmtmpD0 = [ch0*ch0,ch1*ch1,ch2*ch2,ch3*ch3];
    mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
    // mmtmpD0 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3]>>output_shift128 on 32-bits
    mmtmpD1 = vmull_s16(dl_ch128[1], dl_ch128[1]);
    mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
    mmtmpD2 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
    // mmtmpD2 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3,ch4*ch4 + ch5*ch5,ch4*ch4 + ch5*ch5,ch6*ch6 + ch7*ch7,ch6*ch6 + ch7*ch7]>>output_shift128 on 16-bits
    mmtmpD0 = vmull_s16(dl_ch128[2], dl_ch128[2]);
    mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
    mmtmpD1 = vmull_s16(dl_ch128[3], dl_ch128[3]);
    mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
    mmtmpD3 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
    if (pilots==0) {
      mmtmpD0 = vmull_s16(dl_ch128[4], dl_ch128[4]);
      mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
      mmtmpD1 = vmull_s16(dl_ch128[5], dl_ch128[5]);
      mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
      mmtmpD4 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
    }

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

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

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

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

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

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

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


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


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

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

  if (rho) {
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      rho128        = (int16x4x2_t*)&rho[aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch128      = (int16x4_t*)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch128_2    = (int16x4_t*)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
      for (rb=0; rb<nb_rb; rb++) {
  mmtmpD0 = vmull_s16(dl_ch128[0], dl_ch128_2[0]);
  mmtmpD1 = vmull_s16(dl_ch128[1], dl_ch128_2[1]);
  mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
  mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[0],*(int16x4_t*)conj)), dl_ch128_2[0]);
  mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[1],*(int16x4_t*)conj)), dl_ch128_2[1]);
  mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));

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

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

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

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

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


  dl_ch128+=6;
  dl_ch128_2+=6;
  rho128+=3;
      }

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

1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793
void nr_dlsch_channel_compensation_core(int **rxdataF_ext,
                                     int **dl_ch_estimates_ext,
                                     int **dl_ch_mag,
                                     int **dl_ch_magb,
                                     int **rxdataF_comp,
                                     int **rho,
                                     unsigned char n_tx,
                                     unsigned char n_rx,
                                     unsigned char mod_order,
                                     unsigned char output_shift,
                                     int length,
                                     int start_point)

{

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

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

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

    for (aarx=0; aarx<n_rx; aarx++) {
      /* TODO: hack to be removed. There is crash for 1 antenna case, so
       * for 1 antenna case, I put back the value 2 as it was before
       * Elena's commit.
       */
      int x = n_rx > 1 ? n_rx : 2;

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

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

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

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

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

            mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);

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

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

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

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

          }

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

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

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

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

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

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


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

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

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

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

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

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

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

1794 1795

void nr_dlsch_scale_channel(int **dl_ch_estimates_ext,
1796 1797 1798 1799 1800
			    NR_DL_FRAME_PARMS *frame_parms,
			    NR_UE_DLSCH_t **dlsch_ue,
			    uint8_t symbol,
			    uint8_t pilots,
			    unsigned short nb_rb)
1801 1802 1803 1804 1805
{

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

  short rb, ch_amp;
1806
  unsigned char aatx,aarx;
1807 1808
  __m128i *dl_ch128, ch_amp128;

Hongzhi Wang's avatar
Hongzhi Wang committed
1809
  
1810
  if (pilots==1){
Hongzhi Wang's avatar
Hongzhi Wang committed
1811
	  nb_rb = nb_rb>>1;
1812 1813 1814 1815
  }

  // Determine scaling amplitude based the symbol

1816
  ch_amp = 1024*8; //((pilots) ? (dlsch_ue[0]->sqrt_rho_b) : (dlsch_ue[0]->sqrt_rho_a));
1817

1818
    LOG_D(PHY,"Scaling PDSCH Chest in OFDM symbol %d by %d, pilots %d nb_rb %d NCP %d symbol %d\n",symbol,ch_amp,pilots,nb_rb,frame_parms->Ncp,symbol);
1819 1820 1821 1822
   // printf("Scaling PDSCH Chest in OFDM symbol %d by %d\n",symbol_mod,ch_amp);

  ch_amp128 = _mm_set1_epi16(ch_amp); // Q3.13

1823
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_gNB; aatx++) {
1824 1825
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {

Hongzhi Wang's avatar
Hongzhi Wang committed
1826
      dl_ch128=(__m128i *)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*nb_rb*12];
1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855

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

        dl_ch128[0] = _mm_mulhi_epi16(dl_ch128[0],ch_amp128);
        dl_ch128[0] = _mm_slli_epi16(dl_ch128[0],3);

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

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

        }
      }
    }
  }

#elif defined(__arm__)

#endif
}


//compute average channel_level on each (TX,RX) antenna pair
void nr_dlsch_channel_level(int **dl_ch_estimates_ext,
1856 1857 1858 1859 1860
			    NR_DL_FRAME_PARMS *frame_parms,
			    int32_t *avg,
			    uint8_t symbol,
			    uint32_t len,
			    unsigned short nb_rb)
1861 1862 1863 1864 1865
{

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

  short rb;
Hongzhi Wang's avatar
Hongzhi Wang committed
1866
  unsigned char aatx,aarx;
1867 1868 1869
  __m128i *dl_ch128, avg128D;

  //nb_rb*nre = y * 2^x
1870
  int16_t x = factor2(len);
1871
  //x = (x>4) ? 4 : x;
1872
  int16_t y = (len)>>x;
1873
  //printf("len = %d = %d * 2^(%d)\n",len,y,x);
1874

1875
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_gNB; aatx++)
1876 1877 1878 1879 1880 1881 1882 1883 1884 1885
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      //clear average level
      avg128D = _mm_setzero_si128();
      // 5 is always a symbol with no pilots for both normal and extended prefix

      dl_ch128=(__m128i *)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*nb_rb*12];

      for (rb=0;rb<nb_rb;rb++) {
	avg128D = _mm_add_epi32(avg128D,_mm_srai_epi16(_mm_madd_epi16(dl_ch128[0],dl_ch128[0]),x));
	avg128D = _mm_add_epi32(avg128D,_mm_srai_epi16(_mm_madd_epi16(dl_ch128[1],dl_ch128[1]),x));
1886 1887
	avg128D = _mm_add_epi32(avg128D,_mm_srai_epi16(_mm_madd_epi16(dl_ch128[2],dl_ch128[2]),x));
	dl_ch128+=3;
1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908
      }

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

  _mm_empty();
  _m_empty();

#elif defined(__arm__)

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

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

1909
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_gNB; aatx++)
1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      //clear average level
      avg128D = vdupq_n_s32(0);
      // 5 is always a symbol with no pilots for both normal and extended prefix

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

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

1925
        if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_gNB!=1)) {
1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958
          dl_ch128+=4;
        } else {
          avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[4],dl_ch128[4]));
          avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[5],dl_ch128[5]));
          dl_ch128+=6;
        }

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

      if (symbol==2) //assume start symbol 2
          nre=6;
      else
          nre=12;

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

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


#endif
}

1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
void nr_dlsch_channel_level_median(int **dl_ch_estimates_ext,
                                int32_t *median,
                                int n_tx,
                                int n_rx,
                                int length,
                                int start_point)
{

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

  short ii;
  int aatx,aarx;
  int length2;
  int max = 0, min=0;
  int norm_pack;
  __m128i *dl_ch128, norm128D;

  for (aatx=0; aatx<n_tx; aatx++){
    for (aarx=0; aarx<n_rx; aarx++) {
      max = 0;
      min = 0;
      norm128D = _mm_setzero_si128();

      dl_ch128=(__m128i *)&dl_ch_estimates_ext[aatx*2 + aarx][start_point];

      length2 = length>>2;

      for (ii=0;ii<length2;ii++) {
        norm128D = _mm_srai_epi32( _mm_madd_epi16(dl_ch128[0],dl_ch128[0]), 1);
          //print_ints("norm128D",&norm128D[0]);

        norm_pack = ((int32_t*)&norm128D)[0] +
                    ((int32_t*)&norm128D)[1] +
                    ((int32_t*)&norm128D)[2] +
                    ((int32_t*)&norm128D)[3];

        if (norm_pack > max)
          max = norm_pack;
        if (norm_pack < min)
          min = norm_pack;

        dl_ch128+=1;
      }

        median[aatx*n_rx + aarx]  = (max+min)>>1;

     // printf("Channel level  median [%d]: %d\n",aatx*n_rx + aarx, median[aatx*n_rx + aarx]);
      }
    }

  _mm_empty();
  _m_empty();

#elif defined(__arm__)

  short rb;
  unsigned char aatx,aarx,nre=12,symbol_mod;
  int32x4_t norm128D;
  int16x4_t *dl_ch128;

2019
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_gNB; aatx++){
2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      max = 0;
      min = 0;
      norm128D = vdupq_n_s32(0);

      dl_ch128=(int16x4_t *)&dl_ch_estimates_ext[aatx*n_rx + aarx][start_point];

      length_mod8=length&3;
      length2 = length>>2;

      for (ii=0;ii<length2;ii++) {
        norm128D = vshrq_n_u32(vmull_s16(dl_ch128[0],dl_ch128[0]), 1);
        norm_pack = ((int32_t*)&norm128D)[0] +
                    ((int32_t*)&norm128D)[1] +
                    ((int32_t*)&norm128D)[2] +
                    ((int32_t*)&norm128D)[3];

        if (norm_pack > max)
          max = norm_pack;
        if (norm_pack < min)
          min = norm_pack;

          dl_ch128+=1;
      }

        median[aatx*n_rx + aarx]  = (max+min)>>1;

      //printf("Channel level  median [%d]: %d\n",aatx*n_rx + aarx, median[aatx*n_rx + aarx]);
      }
    }
#endif

}

laurent's avatar
laurent committed
2054
static void nr_dlsch_dual_stream_correlation_core(int **dl_ch_estimates_ext,
2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161
                                        int **dl_ch_estimates_ext_i,
                                        int **dl_ch_rho_ext,
                                        unsigned char n_tx,
                                        unsigned char n_rx,
                                        unsigned char output_shift,
                                        int length,
                                        int start_point)
{
#if defined(__x86_64__)||defined(__i386__)

  __m128i *dl_ch128,*dl_ch128i,*dl_ch_rho128,mmtmpD0,mmtmpD1,mmtmpD2,mmtmpD3;
  unsigned char aarx;
  int ii, length2, length_mod8;


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

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

    if (dl_ch_estimates_ext_i == NULL)
      dl_ch128i         = (__m128i *)&dl_ch_estimates_ext[aarx + n_rx][start_point];
    else
      dl_ch128i         = (__m128i *)&dl_ch_estimates_ext_i[aarx][start_point];

    dl_ch_rho128      = (__m128i *)&dl_ch_rho_ext[aarx][start_point];

    length_mod8 = length&7;

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

      for (ii=0; ii<length2; ++ii) {
      // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch128[0],dl_ch128i[0]);
        //      print_ints("re",&mmtmpD0);
        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[0],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,dl_ch128i[0]);
        //      print_ints("im",&mmtmpD1);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
        //      print_ints("re(shift)",&mmtmpD0);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
        //      print_ints("im(shift)",&mmtmpD1);
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
        //      print_ints("c0",&mmtmpD2);
        //      print_ints("c1",&mmtmpD3);
        dl_ch_rho128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
      // print_shorts("rho 0:",dl_ch_rho128);
        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch128[1],dl_ch128i[1]);
        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[1],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,dl_ch128i[1]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
        dl_ch_rho128[1] =_mm_packs_epi32(mmtmpD2,mmtmpD3);

        dl_ch128+=2;
        dl_ch128i+=2;
        dl_ch_rho128+=2;
      }

    }else {
        printf ("Channel Correlarion: Received number of subcarriers is not multiple of 8, \n"
                 "need to adapt the code!\n");
      }

  }

  _mm_empty();
  _m_empty();

#elif defined(__arm__)

#endif
}

void nr_dlsch_detection_mrc_core(int **rxdataF_comp,
                              int **rxdataF_comp_i,
                              int **rho,
                              int **rho_i,
                              int **dl_ch_mag,
                              int **dl_ch_magb,
                              int **dl_ch_mag_i,
                              int **dl_ch_magb_i,
                              unsigned char n_tx,
                              unsigned char n_rx,
                              int length,
                              int start_point)
{

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

  unsigned char aatx;
  int i;
  __m128i *rxdataF_comp128_0, *rxdataF_comp128_1, *rxdataF_comp128_2, *rxdataF_comp128_3;
  __m128i *dl_ch_mag128_0, *dl_ch_mag128_1, *dl_ch_mag128_2, *dl_ch_mag128_3;
  __m128i *dl_ch_mag128_0b, *dl_ch_mag128_1b,  *dl_ch_mag128_2b,  *dl_ch_mag128_3b;
laurent's avatar
laurent committed
2162
  __m128i *rho128_0, *rho128_1, *rho128_2=NULL, *rho128_3=NULL;
2163
  __m128i *rho128_i0, *rho128_i1, *rho128_i2=NULL, *rho128_i3=NULL;
2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341
  int length_mod4 = 0;
  int length2;

  if (n_rx>1) {

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

      rxdataF_comp128_0   = (__m128i *)&rxdataF_comp[(aatx<<1)][start_point];
      rxdataF_comp128_1   = (__m128i *)&rxdataF_comp[(aatx<<1)+1][start_point];
      dl_ch_mag128_0      = (__m128i *)&dl_ch_mag[(aatx<<1)][start_point];
      dl_ch_mag128_1      = (__m128i *)&dl_ch_mag[(aatx<<1)+1][start_point];
      dl_ch_mag128_0b     = (__m128i *)&dl_ch_magb[(aatx<<1)][start_point];
      dl_ch_mag128_1b     = (__m128i *)&dl_ch_magb[(aatx<<1)+1][start_point];

      if (length_mod4 == 0){
        length2 = length>>2;

        for (i=0; i<length2; ++i) {
          rxdataF_comp128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rxdataF_comp128_0[i],1),_mm_srai_epi16(rxdataF_comp128_1[i],1));
          dl_ch_mag128_0[i] = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_0[i],1),_mm_srai_epi16(dl_ch_mag128_1[i],1));
          dl_ch_mag128_0b[i] = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_0b[i],1),_mm_srai_epi16(dl_ch_mag128_1b[i],1));
        }
      }
    }


    if (rho) {
      rho128_0 = (__m128i *) &rho[0][start_point];
      rho128_1 = (__m128i *) &rho[1][start_point];

      if (n_tx == 4){
        rho128_2 = (__m128i *) &rho[2][start_point];
        rho128_3 = (__m128i *) &rho[3][start_point];
      }
        if (length_mod4 == 0){
          length2 = length>>2;

          for (i=0; i<length2; ++i) {
            rho128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_0[i],1),_mm_srai_epi16(rho128_1[i],1));
          if (n_tx == 4){
            rho128_2[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_2[i],1),_mm_srai_epi16(rho128_3[i],1));
          }
        }
      }
    }

    if (rho_i){
      rho128_i0 = (__m128i *) &rho_i[0][start_point];
      rho128_i1 = (__m128i *) &rho_i[1][start_point];
      if (n_tx == 4){
        rho128_i2 = (__m128i *) &rho_i[2][start_point];
        rho128_i3 = (__m128i *) &rho_i[3][start_point];
      }
      if (length_mod4 == 0){
        length2 = length>>2;

        for (i=0; i<length2; ++i){
          rho128_i0[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_i0[i],1),_mm_srai_epi16(rho128_i1[i],1));
          if (n_tx == 4){
            rho128_i2[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_i2[i],1),_mm_srai_epi16(rho128_i3[i],1));
          }
        }
      }
    }

      if (n_tx == 4){

      rxdataF_comp128_0 = (__m128i *)&rxdataF_comp[0][start_point];
      rxdataF_comp128_1 = (__m128i *)&rxdataF_comp[2][start_point];
      rxdataF_comp128_2 = (__m128i *)&rxdataF_comp[4][start_point];
      rxdataF_comp128_3 = (__m128i *)&rxdataF_comp[6][start_point];

      dl_ch_mag128_0 = (__m128i *)&dl_ch_mag[0][start_point];
      dl_ch_mag128_1 = (__m128i *)&dl_ch_mag[2][start_point];
      dl_ch_mag128_2 = (__m128i *)&dl_ch_mag[4][start_point];
      dl_ch_mag128_3 = (__m128i *)&dl_ch_mag[6][start_point];

      dl_ch_mag128_0b = (__m128i *)&dl_ch_magb[0][start_point];
      dl_ch_mag128_1b = (__m128i *)&dl_ch_magb[2][start_point];
      dl_ch_mag128_2b = (__m128i *)&dl_ch_magb[4][start_point];
      dl_ch_mag128_3b = (__m128i *)&dl_ch_magb[6][start_point];

      rho128_0 = (__m128i *)&rho[0][start_point];
      rho128_1 = (__m128i *)&rho[2][start_point];

      rho128_i0 = (__m128i *)&rho_i[0][start_point];
      rho128_i1 = (__m128i *)&rho_i[2][start_point];


      if (length_mod4 == 0){

        length2 = length>>2;

        for (i=0; i<length2; ++i) {
          rxdataF_comp128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rxdataF_comp128_0[i],1),_mm_srai_epi16(rxdataF_comp128_1[i],1));
          rxdataF_comp128_2[i] = _mm_adds_epi16(_mm_srai_epi16(rxdataF_comp128_2[i],1),_mm_srai_epi16(rxdataF_comp128_3[i],1));

          dl_ch_mag128_0[i] = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_0[i],1),_mm_srai_epi16(dl_ch_mag128_1[i],1));
          dl_ch_mag128_2[i] = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_2[i],1),_mm_srai_epi16(dl_ch_mag128_3[i],1));

          dl_ch_mag128_0b[i] = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_0b[i],1),_mm_srai_epi16(dl_ch_mag128_1b[i],1));
          dl_ch_mag128_2b[i] = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_2b[i],1),_mm_srai_epi16(dl_ch_mag128_3b[i],1));

          rho128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_0[i],1),_mm_srai_epi16(rho128_1[i],1));

          rho128_i0[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_i0[i],1),_mm_srai_epi16(rho128_i1[i],1));
        }
    }
  }

  }

  _mm_empty();
  _m_empty();

#elif defined(__arm__)

  unsigned char aatx;
  int i;
  int16x8_t *rxdataF_comp128_0,*rxdataF_comp128_1,*dl_ch_mag128_0,*dl_ch_mag128_1,*dl_ch_mag128_0b,*dl_ch_mag128_1b,*rho128_0,*rho128_1,*rho128_i0,*rho128_i1;
  int length_mod4 = 0;
  int length2;
  int ii=0;

  if (n_rx>1) {

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

      rxdataF_comp128_0   = (int16x8_t *)&rxdataF_comp[(aatx<<1)][start_point];
      rxdataF_comp128_1   = (int16x8_t *)&rxdataF_comp[(aatx<<1)+1][start_point];
      dl_ch_mag128_0      = (int16x8_t *)&dl_ch_mag[(aatx<<1)][start_point];
      dl_ch_mag128_1      = (int16x8_t *)&dl_ch_mag[(aatx<<1)+1][start_point];
      dl_ch_mag128_0b     = (int16x8_t *)&dl_ch_magb[(aatx<<1)][start_point];
      dl_ch_mag128_1b     = (int16x8_t *)&dl_ch_magb[(aatx<<1)+1][start_point];

      if (length_mod4 == 0){
        length2 = length>>2;

        for (i=0; i<length2; ++ii) {
          rxdataF_comp128_0[i] = vhaddq_s16(rxdataF_comp128_0[i],rxdataF_comp128_1[i]);
          dl_ch_mag128_0[i]    = vhaddq_s16(dl_ch_mag128_0[i],dl_ch_mag128_1[i]);
          dl_ch_mag128_0b[i]   = vhaddq_s16(dl_ch_mag128_0b[i],dl_ch_mag128_1b[i]);
        }
      }

    if (rho) {
      rho128_0 = (int16x8_t *) &rho[0][start_point];
      rho128_1 = (int16x8_t *) &rho[1][start_point];

      if (length_mod4 == 0){
        length2 = length>>2;

        for (i=0; i<length2; ++i) {
          rho128_0[i] = vhaddq_s16(rho128_0[i],rho128_1[i]);
        }
      }
    }

    if (rho_i){

      rho128_i0 = (__m128i *) &rho_i[0][start_point];
      rho128_i1 = (__m128i *) &rho_i[1][start_point];

      if (length_mod4 == 0){
        length2 = length>>2;

        for (i=0; i<length2; ++i)
          rho128_i0[i] = vhaddq_s16(rho128_i0[i],rho128_i1[i]);

      }
    }
  }

  }

#endif
}

2342 2343 2344 2345 2346
//==============================================================================================
// Extraction functions
//==============================================================================================

unsigned short nr_dlsch_extract_rbs_single(int **rxdataF,
2347 2348 2349 2350 2351 2352
					   int **dl_ch_estimates,
					   int **rxdataF_ext,
					   int **dl_ch_estimates_ext,
					   unsigned short pmi,
					   unsigned char *pmi_ext,
					   unsigned char symbol,
2353
					   uint8_t pilots,
2354 2355 2356 2357 2358
					   unsigned short start_rb,
					   unsigned short nb_rb_pdsch,
					   unsigned char nr_tti_rx,
					   uint32_t high_speed_flag,
					   NR_DL_FRAME_PARMS *frame_parms) {
2359 2360 2361



hongzhi wang's avatar
hongzhi wang committed
2362
  unsigned short k,rb;
yilmazt's avatar
yilmazt committed
2363
  unsigned char i,aarx; //,nsymb,sss_symb,pss_symb=0,l;
2364 2365 2366 2367
  int *dl_ch0,*dl_ch0_ext,*rxF,*rxF_ext;



2368
  unsigned char j=0;
2369

2370 2371
  AssertFatal(frame_parms->nushift ==0 || frame_parms->nushift == 1,
	      "nushift %d is illegal\n",frame_parms->nushift);
2372 2373 2374

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

cig's avatar
cig committed
2375
    k = frame_parms->first_carrier_offset + NR_NB_SC_PER_RB*start_rb;
2376

2377
    if (high_speed_flag == 1)
hongzhi wang's avatar
hongzhi wang committed
2378
      dl_ch0     = &dl_ch_estimates[aarx][(2*(frame_parms->ofdm_symbol_size))];
2379 2380 2381
    else
      dl_ch0     = &dl_ch_estimates[aarx][0];

hongzhi wang's avatar
hongzhi wang committed
2382
    dl_ch0_ext = &dl_ch_estimates_ext[aarx][symbol*(nb_rb_pdsch*12)];
2383

hongzhi wang's avatar
hongzhi wang committed
2384 2385 2386
    rxF_ext   = &rxdataF_ext[aarx][symbol*(nb_rb_pdsch*12)];
    rxF       = &rxdataF[aarx][(k+(symbol*(frame_parms->ofdm_symbol_size)))];
    
2387
    for (rb = 0; rb < nb_rb_pdsch; rb++) {
2388 2389 2390 2391
      if (k>frame_parms->ofdm_symbol_size) {
        k = k-frame_parms->ofdm_symbol_size;
        rxF = &rxdataF[aarx][(k+(symbol*(frame_parms->ofdm_symbol_size)))];
        }
2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410
      if (pilots==0) {
	memcpy((void*)rxF_ext,(void*)rxF,12*sizeof(*rxF_ext));
	memcpy((void*)dl_ch0_ext,(void*)dl_ch0,12*sizeof(*dl_ch0_ext));
	dl_ch0_ext+=12;
	rxF_ext+=12;
      } else {
	j=0;
		
	for (i = (1-frame_parms->nushift);
	     i<12; 
	     i+=2) {
	  rxF_ext[j]=rxF[i];
	  dl_ch0_ext[j]=dl_ch0[i];
	  j++;
	}
	
	
	dl_ch0_ext+=6;
	rxF_ext+=6;
2411
      }
2412 2413 2414 2415 2416 2417 2418 2419 2420
      
      dl_ch0+=12;
      rxF+=12;
      k+=12;
      if (k>=frame_parms->ofdm_symbol_size) {
        k=k-(frame_parms->ofdm_symbol_size);
	rxF       = &rxdataF[aarx][k+(symbol*(frame_parms->ofdm_symbol_size))];
      }
    }
2421
  }
2422 2423
  
  
hongzhi wang's avatar
hongzhi wang committed
2424
  return(nb_rb_pdsch/frame_parms->nb_antennas_rx);
2425 2426
}

2427 2428 2429 2430 2431 2432 2433
unsigned short nr_dlsch_extract_rbs_dual(int **rxdataF,
                                      int **dl_ch_estimates,
                                      int **rxdataF_ext,
                                      int **dl_ch_estimates_ext,
                                      unsigned short pmi,
                                      unsigned char *pmi_ext,
                                      unsigned char symbol,
2434
									  uint8_t pilots,
2435 2436 2437 2438 2439 2440 2441 2442 2443
									  unsigned short start_rb,
									  unsigned short nb_rb_pdsch,
                                      unsigned char nr_tti_rx,
                                      uint32_t high_speed_flag,
                                      NR_DL_FRAME_PARMS *frame_parms,
                                      MIMO_mode_t mimo_mode) {

  int prb,nb_rb=0;
  unsigned short k;
Florian Kaltenberger's avatar
Florian Kaltenberger committed
2444
  int i,j,aarx;
frtabu's avatar
frtabu committed
2445
  int32_t *dl_ch0=NULL,*dl_ch0_ext=NULL,*dl_ch1=NULL,*dl_ch1_ext=NULL,*rxF=NULL,*rxF_ext=NULL;
2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458

  k = frame_parms->first_carrier_offset + 516; //0

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

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

2459
    //pmi_loc = pmi_ext;
2460 2461 2462 2463 2464 2465 2466

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

    for (prb=0; prb<frame_parms->N_RB_DL; prb++) {
2467
      //skip_half=0;
2468 2469 2470 2471 2472

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

        // For second half of RBs skip DC carrier
        if (k>=frame_parms->ofdm_symbol_size) {
2473
          rxF = &rxdataF[aarx][(symbol*(frame_parms->ofdm_symbol_size))];
2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500
          k=k-(frame_parms->ofdm_symbol_size);
        }

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

        // *pmi_loc = get_pmi(frame_parms->N_RB_DL,mimo_mode,pmi,prb);
        //  pmi_loc++;


          if (pilots == 0) {

            memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));
            memcpy(dl_ch1_ext,dl_ch1,12*sizeof(int));
            memcpy(rxF_ext,rxF,12*sizeof(int));
            dl_ch0_ext +=12;
            dl_ch1_ext +=12;
            rxF_ext    +=12;
          } else { // pilots==1
            j=0;
            for (i=0; i<12; i++) {
              if ((i&1)!=frame_parms->nushift) {
                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]));
frtabu's avatar
frtabu committed
2501 2502
                dl_ch0_ext[j]=dl_ch0[i];
                dl_ch1_ext[j++]=dl_ch1[i];
2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519
              }
            }
            dl_ch0_ext+=6;
            dl_ch1_ext+=6;
            rxF_ext+=6;
          } // pilots==1

          dl_ch0+=12;
          dl_ch1+=12;
          rxF+=12;
          k+=12;
      }
    } // for prb
  } // for aarx
  return(nb_rb/frame_parms->nb_antennas_rx);
}

2520

laurent's avatar
laurent committed
2521
static void nr_dlsch_layer_demapping(int16_t **llr_cw,
2522 2523 2524 2525
				     uint8_t Nl,
				     uint8_t mod_order,
				     uint16_t length,
				     int16_t **llr_layers) {
2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548

  switch (Nl) {

    case 1:
      memcpy((void*)llr_layers[0], (void*)llr_cw[0], (length)*sizeof(int16_t));
    break;

    case 2:
    case 3:
    case 4:
      for (int i=0; i<(length/Nl/mod_order); i++){
        for (int l=0; l<Nl; l++) {
        	for (int m=0; m<mod_order; m++){
        		llr_cw[0][Nl*i+l*mod_order+m] = llr_layers[l][i*mod_order+m];
        	}
        }
  	  }
    break;

  default:
  AssertFatal(0, "Not supported number of layers %d\n", Nl);
  }
}
2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559
//==============================================================================================

#ifdef USER_MODE


void dump_dlsch2(PHY_VARS_UE *ue,uint8_t eNB_id,uint8_t nr_tti_rx,unsigned int *coded_bits_per_codeword,int round,  unsigned char harq_pid)
{
  unsigned int nsymb = (ue->frame_parms.Ncp == 0) ? 14 : 12;
  char fname[32],vname[32];
  int N_RB_DL=ue->frame_parms.N_RB_DL;

2560 2561
  snprintf(fname, 32, "dlsch%d_rxF_r%d_ext0.m",eNB_id,round);
  snprintf(vname, 32, "dl%d_rxF_r%d_ext0",eNB_id,round);
2562 2563 2564
  write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->rxdataF_ext[0],12*N_RB_DL*nsymb,1,1);

  if (ue->frame_parms.nb_antennas_rx >1) {
2565 2566
    snprintf(fname, 32, "dlsch%d_rxF_r%d_ext1.m",eNB_id,round);
    snprintf(vname, 32, "dl%d_rxF_r%d_ext1",eNB_id,round);
2567 2568 2569
    write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->rxdataF_ext[1],12*N_RB_DL*nsymb,1,1);
  }

2570 2571
  snprintf(fname, 32, "dlsch%d_ch_r%d_ext00.m",eNB_id,round);
  snprintf(vname, 32, "dl%d_ch_r%d_ext00",eNB_id,round);
2572 2573 2574
  write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->dl_ch_estimates_ext[0],12*N_RB_DL*nsymb,1,1);

  if (ue->transmission_mode[eNB_id]==7){
2575 2576
    snprintf(fname, 32, "dlsch%d_bf_ch_r%d.m",eNB_id,round);
    snprintf(vname, 32, "dl%d_bf_ch_r%d",eNB_id,round);
2577 2578 2579
    write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->dl_bf_ch_estimates[0],512*nsymb,1,1);
    //write_output(fname,vname,phy_vars_ue->lte_ue_pdsch_vars[eNB_id]->dl_bf_ch_estimates[0],512,1,1);

2580 2581
    snprintf(fname, 32, "dlsch%d_bf_ch_r%d_ext00.m",eNB_id,round);
    snprintf(vname, 32, "dl%d_bf_ch_r%d_ext00",eNB_id,round);
2582 2583 2584 2585
    write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->dl_bf_ch_estimates_ext[0],12*N_RB_DL*nsymb,1,1);
  }

  if (ue->frame_parms.nb_antennas_rx == 2) {
2586 2587
    snprintf(fname, 32, "dlsch%d_ch_r%d_ext01.m",eNB_id,round);
    snprintf(vname, 32, "dl%d_ch_r%d_ext01",eNB_id,round);
2588 2589 2590
    write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->dl_ch_estimates_ext[1],12*N_RB_DL*nsymb,1,1);
  }

2591
  if (ue->frame_parms.nb_antenna_ports_gNB == 2) {
2592 2593
    snprintf(fname, 32, "dlsch%d_ch_r%d_ext10.m",eNB_id,round);
    snprintf(vname, 32, "dl%d_ch_r%d_ext10",eNB_id,round);
2594 2595 2596
    write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->dl_ch_estimates_ext[2],12*N_RB_DL*nsymb,1,1);

    if (ue->frame_parms.nb_antennas_rx == 2) {
2597 2598
      snprintf(fname, 32, "dlsch%d_ch_r%d_ext11.m",eNB_id,round);
      snprintf(vname, 32, "dl%d_ch_r%d_ext11",eNB_id,round);
2599 2600 2601 2602
      write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->dl_ch_estimates_ext[3],12*N_RB_DL*nsymb,1,1);
    }
  }

2603 2604
  snprintf(fname, 32, "dlsch%d_rxF_r%d_uespec0.m",eNB_id,round);
  snprintf(vname, 32, "dl%d_rxF_r%d_uespec0",eNB_id,round);
2605 2606 2607 2608 2609 2610 2611
  write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->rxdataF_uespec_pilots[0],12*N_RB_DL,1,1);

  /*
    write_output("dlsch%d_ch_ext01.m","dl01_ch0_ext",pdsch_vars[eNB_id]->dl_ch_estimates_ext[1],12*N_RB_DL*nsymb,1,1);
    write_output("dlsch%d_ch_ext10.m","dl10_ch0_ext",pdsch_vars[eNB_id]->dl_ch_estimates_ext[2],12*N_RB_DL*nsymb,1,1);
    write_output("dlsch%d_ch_ext11.m","dl11_ch0_ext",pdsch_vars[eNB_id]->dl_ch_estimates_ext[3],12*N_RB_DL*nsymb,1,1);
  */
2612 2613
  snprintf(fname, 32, "dlsch%d_r%d_rho.m",eNB_id,round);
  snprintf(vname, 32, "dl_rho_r%d_%d",eNB_id,round);
2614 2615 2616

  write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->dl_ch_rho_ext[harq_pid][round][0],12*N_RB_DL*nsymb,1,1);

2617 2618
  snprintf(fname, 32, "dlsch%d_r%d_rho2.m",eNB_id,round);
  snprintf(vname, 32, "dl_rho2_r%d_%d",eNB_id,round);
2619 2620 2621

  write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->dl_ch_rho2_ext[0],12*N_RB_DL*nsymb,1,1);

2622 2623
  snprintf(fname, 32, "dlsch%d_rxF_r%d_comp0.m",eNB_id,round);
  snprintf(vname, 32, "dl%d_rxF_r%d_comp0",eNB_id,round);
2624
  write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->rxdataF_comp0[0],12*N_RB_DL*nsymb,1,1);
2625
  if (ue->frame_parms.nb_antenna_ports_gNB == 2) {
2626 2627
    snprintf(fname, 32, "dlsch%d_rxF_r%d_comp1.m",eNB_id,round);
    snprintf(vname, 32, "dl%d_rxF_r%d_comp1",eNB_id,round);
2628 2629 2630
    write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->rxdataF_comp1[harq_pid][round][0],12*N_RB_DL*nsymb,1,1);
  }

2631 2632
  snprintf(fname, 32, "dlsch%d_rxF_r%d_llr.m",eNB_id,round);
  snprintf(vname, 32, "dl%d_r%d_llr",eNB_id,round);
2633
  write_output(fname,vname, ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->llr[0],coded_bits_per_codeword[0],1,0);
2634 2635
  snprintf(fname, 32, "dlsch%d_r%d_mag1.m",eNB_id,round);
  snprintf(vname, 32, "dl%d_r%d_mag1",eNB_id,round);
2636
  write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->dl_ch_mag0[0],12*N_RB_DL*nsymb,1,1);
2637 2638
  snprintf(fname, 32, "dlsch%d_r%d_mag2.m",eNB_id,round);
  snprintf(vname, 32, "dl%d_r%d_mag2",eNB_id,round);
2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685
  write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->dl_ch_magb0[0],12*N_RB_DL*nsymb,1,1);

  //  printf("log2_maxh = %d\n",ue->pdsch_vars[eNB_id]->log2_maxh);
}
#endif

#ifdef DEBUG_DLSCH_DEMOD
/*
void print_bytes(char *s,__m128i *x)
{

  char *tempb = (char *)x;

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

}

void print_shorts(char *s,__m128i *x)
{

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

}

void print_shorts2(char *s,__m64 *x)
{

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

}

void print_ints(char *s,__m128i *x)
{

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

}*/
#endif