/*
* 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 36-211, V8.6 2009-03
* \author R. Knopp, F. Kaltenberger,A. Bhamri, S. Aubert, X. Xiang
* \date 2011
* \version 0.1
* \company Eurecom
* \email: knopp@eurecom.fr,florian.kaltenberger@eurecom.fr,ankit.bhamri@eurecom.fr,sebastien.aubert@eurecom.fr
* \note
* \warning
*/
#include "PHY/defs.h"
#include "PHY/extern.h"
#include "defs.h"
#include "extern.h"
#include "PHY/sse_intrin.h"
#ifndef USER_MODE
#define NOCYGWIN_STATIC static
#else
#define NOCYGWIN_STATIC
#endif
//#define DEBUG_PHY 1
//#define DEBUG_DLSCH_DEMOD 1
int avg[4];
// [MCS][i_mod (0,1,2) = (2,4,6)]
unsigned char offset_mumimo_llr_drange_fix=0;
/*
//original values from sebastion + same hand tuning
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);
int rx_pdsch(PHY_VARS_UE *ue,
PDSCH_t type,
unsigned char eNB_id,
unsigned char eNB_id_i, //if this == ue->n_connected_eNB, we assume MU interference
uint8_t subframe,
unsigned char symbol,
unsigned char first_symbol_flag,
unsigned char dual_stream_flag,
unsigned char i_mod,
unsigned char harq_pid)
{
LTE_UE_COMMON *common_vars = &ue->common_vars;
LTE_UE_PDSCH **pdsch_vars;
LTE_DL_FRAME_PARMS *frame_parms = &ue->frame_parms;
PHY_MEASUREMENTS *phy_measurements = &ue->measurements;
LTE_UE_DLSCH_t **dlsch;
unsigned char aatx,aarx;
unsigned short nb_rb=0;
int avgs, rb;
LTE_DL_UE_HARQ_t *dlsch0_harq,*dlsch1_harq = 0;
uint8_t beamforming_mode;
uint32_t *rballoc;
switch (type) {
case SI_PDSCH:
pdsch_vars = &ue->pdsch_vars_SI[eNB_id];
dlsch = &ue->dlsch_SI[eNB_id];
dlsch0_harq = dlsch[0]->harq_processes[harq_pid];
beamforming_mode = 0;
break;
case RA_PDSCH:
pdsch_vars = &ue->pdsch_vars_ra[eNB_id];
dlsch = &ue->dlsch_ra[eNB_id];
dlsch0_harq = dlsch[0]->harq_processes[harq_pid];
beamforming_mode = 0;
break;
case PDSCH:
pdsch_vars = &ue->pdsch_vars[eNB_id];
dlsch = ue->dlsch[eNB_id];
dlsch0_harq = dlsch[0]->harq_processes[harq_pid];
dlsch1_harq = dlsch[1]->harq_processes[harq_pid];
beamforming_mode = ue->transmission_mode[eNB_id]<7?0:ue->transmission_mode[eNB_id];
break;
default:
LOG_E(PHY,"[UE %d][FATAL] Frame %d subframe %d: Unknown PDSCH format %d\n",ue->proc.proc_rxtx[0].frame_rx,subframe,type);
return(-1);
break;
}
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 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);
}
if (((frame_parms->Ncp == NORMAL) && (symbol>=7)) ||
((frame_parms->Ncp == EXTENDED) && (symbol>=6)))
rballoc = dlsch0_harq->rb_alloc_odd;
else
rballoc = dlsch0_harq->rb_alloc_even;
if (frame_parms->nb_antenna_ports_eNB>1 && beamforming_mode==0) {
#ifdef DEBUG_DLSCH_MOD
LOG_I(PHY,"dlsch: using pmi %x (%p), rb_alloc %x\n",pmi2hex_2Ar1(dlsch0_harq->pmi_alloc),dlsch[0],dlsch0_harq->rb_alloc_even[0]);
#endif
nb_rb = dlsch_extract_rbs_dual(common_vars->rxdataF,
common_vars->dl_ch_estimates[eNB_id],
pdsch_vars[eNB_id]->rxdataF_ext,
pdsch_vars[eNB_id]->dl_ch_estimates_ext,
dlsch0_harq->pmi_alloc,
pdsch_vars[eNB_id]->pmi_ext,
rballoc,
symbol,
subframe,
ue->high_speed_flag,
frame_parms);
if (dual_stream_flag==1) {
if (eNB_id_i<ue->n_connected_eNB)
nb_rb = dlsch_extract_rbs_dual(common_vars->rxdataF,
common_vars->dl_ch_estimates[eNB_id_i],
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,
rballoc,
symbol,
subframe,
ue->high_speed_flag,
frame_parms);
else
nb_rb = dlsch_extract_rbs_dual(common_vars->rxdataF,
common_vars->dl_ch_estimates[eNB_id],
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,
rballoc,
symbol,
subframe,
ue->high_speed_flag,
frame_parms);
}
} else if (beamforming_mode==0) { //else if nb_antennas_ports_eNB==1 && beamforming_mode == 0
nb_rb = dlsch_extract_rbs_single(common_vars->rxdataF,
common_vars->dl_ch_estimates[eNB_id],
pdsch_vars[eNB_id]->rxdataF_ext,
pdsch_vars[eNB_id]->dl_ch_estimates_ext,
dlsch0_harq->pmi_alloc,
pdsch_vars[eNB_id]->pmi_ext,
rballoc,
symbol,
subframe,
ue->high_speed_flag,
frame_parms);
if (dual_stream_flag==1) {
if (eNB_id_i<ue->n_connected_eNB)
nb_rb = dlsch_extract_rbs_single(common_vars->rxdataF,
common_vars->dl_ch_estimates[eNB_id_i],
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,
rballoc,
symbol,
subframe,
ue->high_speed_flag,
frame_parms);
nb_rb = dlsch_extract_rbs_single(common_vars->rxdataF,
common_vars->dl_ch_estimates[eNB_id],
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,
rballoc,
symbol,
subframe,
ue->high_speed_flag,
frame_parms);
}
} else if (beamforming_mode==7) { //else if beamforming_mode == 7
nb_rb = dlsch_extract_rbs_TM7(common_vars->rxdataF,
pdsch_vars[eNB_id]->dl_bf_ch_estimates,
pdsch_vars[eNB_id]->rxdataF_ext,
pdsch_vars[eNB_id]->dl_bf_ch_estimates_ext,
rballoc,
symbol,
subframe,
ue->high_speed_flag,
frame_parms);
} else if(beamforming_mode>7) {
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);
}
/*
// DL power control: Scaling of Channel estimates for PDSCH
dlsch_scale_channel(pdsch_vars[eNB_id]->dl_ch_estimates_ext,
frame_parms,
dlsch,
symbol,
nb_rb);
*/
if (first_symbol_flag==1) {
if (beamforming_mode==0)
dlsch_channel_level(pdsch_vars[eNB_id]->dl_ch_estimates_ext,
frame_parms,
avg,
symbol,
nb_rb);
else if (beamforming_mode==7)
dlsch_channel_level_TM7(pdsch_vars[eNB_id]->dl_bf_ch_estimates_ext,
frame_parms,
avg,
symbol,
nb_rb);
#ifdef DEBUG_PHY
LOG_D(PHY,"[DLSCH] avg[0] %d\n",avg[0]);
#endif
// the channel gain should be the effective gain of precoding + channel
// however lets be more conservative and set maxh = nb_tx*nb_rx*max(h_i)
// in case of precoding we add an additional factor of two for the precoding gain
avgs = 0;
for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++)
for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++)
avgs = cmax(avgs,avg[(aatx<<1)+aarx]);
// avgs = cmax(avgs,avg[(aarx<<1)+aatx]);
pdsch_vars[eNB_id]->log2_maxh = (log2_approx(avgs)/2)+1;
// + log2_approx(frame_parms->nb_antenna_ports_eNB-1) //-1 because log2_approx counts the number of bits
// + log2_approx(frame_parms->nb_antennas_rx-1);
if ((dlsch0_harq->mimo_mode>=UNIFORM_PRECODING11) &&
(dlsch0_harq->mimo_mode< DUALSTREAM_UNIFORM_PRECODING1) &&
(dlsch0_harq->dl_power_off==1)) // we are in TM 6
pdsch_vars[eNB_id]->log2_maxh++;
// this version here applies the factor .5 also to the extra terms. however, it does not work so well as the one above
/* K = Nb_rx in TM1
Nb_tx*Nb_rx in TM2,4,5
Nb_tx^2*Nb_rx in TM6 */
/*
K = frame_parms->nb_antennas_rx*frame_parms->nb_antenna_ports_eNB; //that also covers TM1 since Nb_tx=1
if ((dlsch0_harq->mimo_mode>=UNIFORM_PRECODING11) &&
(dlsch0_harq->mimo_mode< DUALSTREAM_UNIFORM_PRECODING1) &&
(dlsch0_harq->dl_power_off==1)) // we are in TM 6
K *= frame_parms->nb_antenna_ports_eNB;
pdsch_vars[eNB_id]->log2_maxh = (log2_approx(K*avgs)/2);
*/
#ifdef DEBUG_PHY
LOG_D(PHY,"[DLSCH] log2_maxh = %d (%d,%d)\n",pdsch_vars[eNB_id]->log2_maxh,avg[0],avgs);
LOG_D(PHY,"[DLSCH] mimo_mode = %d\n", dlsch0_harq->mimo_mode);
#endif
}
aatx = frame_parms->nb_antenna_ports_eNB;
aarx = frame_parms->nb_antennas_rx;
if (dlsch0_harq->mimo_mode<LARGE_CDD) {// SISO or ALAMOUTI
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,
first_symbol_flag,
dlsch0_harq->Qm,
nb_rb,
pdsch_vars[eNB_id]->log2_maxh,
phy_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);
#endif
if ((dual_stream_flag==1) &&
(eNB_id_i<ue->n_connected_eNB)) {
// get MF output for interfering stream
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,
phy_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
// compute correlation between signal and interference channels
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,
pdsch_vars[eNB_id]->log2_maxh);
}
} else if (dlsch0_harq->mimo_mode == LARGE_CDD) { // TM3
// LOG_I(PHY,"Running PDSCH RX for TM3\n");
if (frame_parms->nb_antenna_ports_eNB == 2) {
if (first_symbol_flag==1) {
// effective channel of desired user is always stronger than interfering eff. channel
dlsch_channel_level_TM3(pdsch_vars[eNB_id]->dl_ch_estimates_ext,
frame_parms,
avg, symbol, nb_rb);
// LOG_D(PHY,"llr_offset = %d\n",offset_mumimo_llr_drange[dlsch0_harq->mcs][(dlsch1_harq->mcs>>1)-1]);
avg[0] = log2_approx(avg[0]) - 13 + offset_mumimo_llr_drange[dlsch0_harq->mcs][(dlsch1_harq->Qm>>1)-1];
pdsch_vars[eNB_id]->log2_maxh = cmax(avg[0],0);
// printf("log2_maxh =%d\n",pdsch_vars[eNB_id]->log2_maxh);
}
dlsch_channel_compensation_TM3(frame_parms,
pdsch_vars[eNB_id],
phy_measurements,
eNB_id,
symbol,
dlsch0_harq->Qm,
dlsch1_harq->Qm,
dlsch0_harq->round,
nb_rb,
pdsch_vars[eNB_id]->log2_maxh);
// compute correlation between signal and interference channels (rho12 and rho21)
dlsch_dual_stream_correlation(frame_parms,
symbol,
nb_rb,
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,
pdsch_vars[eNB_id]->log2_maxh);
dlsch_dual_stream_correlation(frame_parms,
symbol,
nb_rb,
&(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,
pdsch_vars[eNB_id]->log2_maxh);
//printf("TM3 log2_maxh : %d\n",pdsch_vars[eNB_id]->log2_maxh);
} else {
LOG_E(PHY, "only 2 tx antennas supported for TM3\n");
}
} else if (dlsch0_harq->mimo_mode<DUALSTREAM_UNIFORM_PRECODING1) { // single-layer precoding (TM5, TM6), potentially TM4 (Single-codeword)
// printf("Channel compensation for precoding\n");
// if ((dual_stream_flag==1) && (eNB_id_i==NUMBER_OF_CONNECTED_eNB_MAX)) {
if ((dual_stream_flag==1) && (eNB_id_i==ue->n_connected_eNB)) { // TM5 two-user
// Scale the channel estimates for interfering stream
dlsch_scale_channel(pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
frame_parms,
dlsch,
symbol,
nb_rb);
/* compute new log2_maxh for effective channel */
if (first_symbol_flag==1) {
// effective channel of desired user is always stronger than interfering eff. channel
dlsch_channel_level_TM56(pdsch_vars[eNB_id]->dl_ch_estimates_ext, frame_parms, pdsch_vars[eNB_id]->pmi_ext, avg, symbol, nb_rb);
// LOG_D(PHY,"llr_offset = %d\n",offset_mumimo_llr_drange[dlsch0_harq->mcs][(i_mod>>1)-1]);
avg[0] = log2_approx(avg[0]) - 13 + offset_mumimo_llr_drange[dlsch0_harq->mcs][(i_mod>>1)-1];
pdsch_vars[eNB_id]->log2_maxh = cmax(avg[0],0);
//printf("log1_maxh =%d\n",pdsch_vars[eNB_id]->log2_maxh);
}
dlsch_channel_compensation_TM56(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,
pdsch_vars[eNB_id]->pmi_ext,
frame_parms,
phy_measurements,
eNB_id,
symbol,
dlsch0_harq->Qm,
nb_rb,
pdsch_vars[eNB_id]->log2_maxh,
dlsch0_harq->dl_power_off);
// if interference source is MU interference, assume opposite precoder was used at eNB
// calculate opposite PMI
for (rb=0; rb<nb_rb; rb++) {
switch(pdsch_vars[eNB_id]->pmi_ext[rb]) {
case 0:
pdsch_vars[eNB_id_i]->pmi_ext[rb]=1;
break;
case 1:
pdsch_vars[eNB_id_i]->pmi_ext[rb]=0;
break;
case 2:
pdsch_vars[eNB_id_i]->pmi_ext[rb]=3;
break;
case 3:
pdsch_vars[eNB_id_i]->pmi_ext[rb]=2;
break;
}
// if (rb==0)
// printf("pmi %d, pmi_i %d\n",pdsch_vars[eNB_id]->pmi_ext[rb],pdsch_vars[eNB_id_i]->pmi_ext[rb]);
}
dlsch_channel_compensation_TM56(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,
pdsch_vars[eNB_id_i]->pmi_ext,
frame_parms,
phy_measurements,
eNB_id_i,
symbol,
i_mod,
nb_rb,
pdsch_vars[eNB_id]->log2_maxh,
dlsch0_harq->dl_power_off);
#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,
pdsch_vars[eNB_id]->log2_maxh);
} else {
dlsch_channel_compensation_TM56(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,
pdsch_vars[eNB_id]->pmi_ext,
frame_parms,
phy_measurements,
eNB_id,
symbol,
dlsch0_harq->Qm,
nb_rb,
pdsch_vars[eNB_id]->log2_maxh,
1);
}
} else if (dlsch0_harq->mimo_mode==TM7) { //TM7
dlsch_channel_compensation(pdsch_vars[eNB_id]->rxdataF_ext,
pdsch_vars[eNB_id]->dl_bf_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,
first_symbol_flag,
get_Qm(dlsch0_harq->mcs),
nb_rb,
//9,
pdsch_vars[eNB_id]->log2_maxh,
phy_measurements); // log2_maxh+I0_shift
}
// printf("MRC\n");
if (frame_parms->nb_antennas_rx > 1) {
if (dlsch0_harq->mimo_mode == LARGE_CDD) {
if (frame_parms->nb_antenna_ports_eNB == 2) {
dlsch_detection_mrc(frame_parms,
pdsch_vars[eNB_id]->rxdataF_comp0,
pdsch_vars[eNB_id]->rxdataF_comp1[dlsch0_harq->round],
pdsch_vars[eNB_id]->dl_ch_rho_ext,
pdsch_vars[eNB_id]->rho,
pdsch_vars[eNB_id]->dl_ch_mag0,
pdsch_vars[eNB_id]->dl_ch_magb0,
pdsch_vars[eNB_id]->dl_ch_mag1,
pdsch_vars[eNB_id]->dl_ch_magb1,
symbol,
nb_rb,
dual_stream_flag);
}
} else {
dlsch_detection_mrc(frame_parms,
pdsch_vars[eNB_id]->rxdataF_comp0,
pdsch_vars[eNB_id_i]->rxdataF_comp0,
pdsch_vars[eNB_id]->rho,
pdsch_vars[eNB_id]->dl_ch_rho_ext,
pdsch_vars[eNB_id]->dl_ch_mag0,
pdsch_vars[eNB_id]->dl_ch_magb0,
pdsch_vars[eNB_id_i]->dl_ch_mag0,
pdsch_vars[eNB_id_i]->dl_ch_magb0,
symbol,
nb_rb,
dual_stream_flag);
}
}
// printf("Combining");
if ((dlsch0_harq->mimo_mode == SISO) ||
((dlsch0_harq->mimo_mode >= UNIFORM_PRECODING11) &&
(dlsch0_harq->mimo_mode <= PUSCH_PRECODING0)) ||
(dlsch0_harq->mimo_mode == TM7)) {
/*
dlsch_siso(frame_parms,
pdsch_vars[eNB_id]->rxdataF_comp,
pdsch_vars[eNB_id_i]->rxdataF_comp,
symbol,
nb_rb);
*/
} else if (dlsch0_harq->mimo_mode == ALAMOUTI) {
dlsch_alamouti(frame_parms,
pdsch_vars[eNB_id]->rxdataF_comp0,
pdsch_vars[eNB_id]->dl_ch_mag0,
pdsch_vars[eNB_id]->dl_ch_magb0,
symbol,
nb_rb);
}
else if (dlsch0_harq->mimo_mode == LARGE_CDD) {
} else {
LOG_W(PHY,"dlsch_rx: Unknown MIMO mode\n");
return (-1);
}
// printf("LLR");
switch (dlsch0_harq->Qm) {
case 2 :
if (dlsch0_harq->mimo_mode != LARGE_CDD) {
if (dual_stream_flag == 0)
dlsch_qpsk_llr(frame_parms,
pdsch_vars[eNB_id]->rxdataF_comp0,
pdsch_vars[eNB_id]->llr[0],
symbol,first_symbol_flag,nb_rb,
adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
pdsch_vars[eNB_id]->llr128,
beamforming_mode);
else if (i_mod == 2) {
dlsch_qpsk_qpsk_llr(frame_parms,
pdsch_vars[eNB_id]->rxdataF_comp0,
pdsch_vars[eNB_id_i]->rxdataF_comp0,
pdsch_vars[eNB_id]->dl_ch_rho_ext,
pdsch_vars[eNB_id]->llr[0],
symbol,first_symbol_flag,nb_rb,
adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
pdsch_vars[eNB_id]->llr128);
} else if (i_mod == 4) {
dlsch_qpsk_16qam_llr(frame_parms,
pdsch_vars[eNB_id]->rxdataF_comp0,
pdsch_vars[eNB_id_i]->rxdataF_comp0,
pdsch_vars[eNB_id_i]->dl_ch_mag0,
pdsch_vars[eNB_id]->dl_ch_rho_ext,
pdsch_vars[eNB_id]->llr[0],
symbol,first_symbol_flag,nb_rb,
adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
pdsch_vars[eNB_id]->llr128);
} else {
dlsch_qpsk_64qam_llr(frame_parms,
pdsch_vars[eNB_id]->rxdataF_comp0,
pdsch_vars[eNB_id_i]->rxdataF_comp0,
pdsch_vars[eNB_id_i]->dl_ch_mag0,
pdsch_vars[eNB_id]->dl_ch_rho_ext,
pdsch_vars[eNB_id]->llr[0],
symbol,first_symbol_flag,nb_rb,
adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
pdsch_vars[eNB_id]->llr128);
}
} else { // TM3
DevAssert(dlsch1_harq);
if (dlsch1_harq->Qm == 2) {
/* dlsch_qpsk_llr(frame_parms,
pdsch_vars[eNB_id]->rxdataF_comp0,
pdsch_vars[eNB_id]->llr[0],
symbol,first_symbol_flag,nb_rb,
adjust_G2(frame_parms,dlsch0_harq->rb_alloc,2,subframe,symbol),
pdsch_vars[eNB_id]->llr128);
*/
dlsch_qpsk_qpsk_llr(frame_parms,
pdsch_vars[eNB_id]->rxdataF_comp0,
pdsch_vars[eNB_id]->rxdataF_comp1[dlsch0_harq->round],
pdsch_vars[eNB_id]->dl_ch_rho_ext,
pdsch_vars[eNB_id]->llr[0],
symbol,first_symbol_flag,nb_rb,
adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
pdsch_vars[eNB_id]->llr128);
dlsch_qpsk_qpsk_llr(frame_parms,
pdsch_vars[eNB_id]->rxdataF_comp1[dlsch0_harq->round],
pdsch_vars[eNB_id]->rxdataF_comp0,
pdsch_vars[eNB_id]->dl_ch_rho2_ext,
pdsch_vars[eNB_id]->llr[1],
symbol,first_symbol_flag,nb_rb,
adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,2,subframe,symbol),
pdsch_vars[eNB_id]->llr128_2ndstream);
} else if (dlsch1_harq->Qm == 4) {
dlsch_qpsk_16qam_llr(frame_parms,
pdsch_vars[eNB_id]->rxdataF_comp0,
pdsch_vars[eNB_id]->rxdataF_comp1[dlsch0_harq->round],
pdsch_vars[eNB_id]->dl_ch_mag1,
pdsch_vars[eNB_id]->dl_ch_rho_ext,
pdsch_vars[eNB_id]->llr[0],
symbol,first_symbol_flag,nb_rb,
adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
pdsch_vars[eNB_id]->llr128);
} else {
dlsch_qpsk_64qam_llr(frame_parms,
pdsch_vars[eNB_id]->rxdataF_comp0,
pdsch_vars[eNB_id]->rxdataF_comp1[dlsch0_harq->round],
pdsch_vars[eNB_id]->dl_ch_mag1,
pdsch_vars[eNB_id]->dl_ch_rho_ext,
pdsch_vars[eNB_id]->llr[0],
symbol,first_symbol_flag,nb_rb,
adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
pdsch_vars[eNB_id]->llr128);
}
}
break;
case 4 :
if (dual_stream_flag == 0) {
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,first_symbol_flag,nb_rb,
adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,4,subframe,symbol),
pdsch_vars[eNB_id]->llr128,
beamforming_mode);
} else if (i_mod == 2) {
dlsch_16qam_qpsk_llr(frame_parms,
pdsch_vars[eNB_id]->rxdataF_comp0,
pdsch_vars[eNB_id_i]->rxdataF_comp0,
pdsch_vars[eNB_id]->dl_ch_mag0,
pdsch_vars[eNB_id]->dl_ch_rho_ext,
pdsch_vars[eNB_id]->llr[0],
symbol,first_symbol_flag,nb_rb,
adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
pdsch_vars[eNB_id]->llr128);
} else if (i_mod == 4) {
dlsch_16qam_16qam_llr(frame_parms,
pdsch_vars[eNB_id]->rxdataF_comp0,
pdsch_vars[eNB_id_i]->rxdataF_comp0,
pdsch_vars[eNB_id]->dl_ch_mag0,
pdsch_vars[eNB_id_i]->dl_ch_mag0,
pdsch_vars[eNB_id]->dl_ch_rho_ext,
pdsch_vars[eNB_id]->llr[0],
symbol,first_symbol_flag,nb_rb,
adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
pdsch_vars[eNB_id]->llr128);
} else {
dlsch_16qam_64qam_llr(frame_parms,
pdsch_vars[eNB_id]->rxdataF_comp0,
pdsch_vars[eNB_id_i]->rxdataF_comp0,
pdsch_vars[eNB_id]->dl_ch_mag0,
pdsch_vars[eNB_id_i]->dl_ch_mag0,
pdsch_vars[eNB_id]->dl_ch_rho_ext,
pdsch_vars[eNB_id]->llr[0],
symbol,first_symbol_flag,nb_rb,
adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
pdsch_vars[eNB_id]->llr128);
}
break;
case 6 :
if (dual_stream_flag == 0) {
dlsch_64qam_llr(frame_parms,
pdsch_vars[eNB_id]->rxdataF_comp0,
pdsch_vars[eNB_id]->llr[0],
pdsch_vars[eNB_id]->dl_ch_mag0,
pdsch_vars[eNB_id]->dl_ch_magb0,
symbol,first_symbol_flag,nb_rb,
adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,6,subframe,symbol),
pdsch_vars[eNB_id]->llr128,
beamforming_mode);
} else if (i_mod == 2) {
dlsch_64qam_qpsk_llr(frame_parms,
pdsch_vars[eNB_id]->rxdataF_comp0,
pdsch_vars[eNB_id_i]->rxdataF_comp0,
pdsch_vars[eNB_id]->dl_ch_mag0,
pdsch_vars[eNB_id]->dl_ch_rho_ext,
pdsch_vars[eNB_id]->llr[0],
symbol,first_symbol_flag,nb_rb,
adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
pdsch_vars[eNB_id]->llr128);
} else if (i_mod == 4) {
dlsch_64qam_16qam_llr(frame_parms,
pdsch_vars[eNB_id]->rxdataF_comp0,
pdsch_vars[eNB_id_i]->rxdataF_comp0,
pdsch_vars[eNB_id]->dl_ch_mag0,
pdsch_vars[eNB_id_i]->dl_ch_mag0,
pdsch_vars[eNB_id]->dl_ch_rho_ext,
pdsch_vars[eNB_id]->llr[0],
symbol,first_symbol_flag,nb_rb,
adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
pdsch_vars[eNB_id]->llr128);
} else {
dlsch_64qam_64qam_llr(frame_parms,
pdsch_vars[eNB_id]->rxdataF_comp0,
pdsch_vars[eNB_id_i]->rxdataF_comp0,
pdsch_vars[eNB_id]->dl_ch_mag0,
pdsch_vars[eNB_id_i]->dl_ch_mag0,
pdsch_vars[eNB_id]->dl_ch_rho_ext,
pdsch_vars[eNB_id]->llr[0],
symbol,first_symbol_flag,nb_rb,
adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
pdsch_vars[eNB_id]->llr128);
}
break;
default:
LOG_W(PHY,"rx_dlsch.c : Unknown mod_order!!!!\n");
return(-1);
break;
}
return(0);
}
//==============================================================================================
// Pre-processing for LLR computation
//==============================================================================================
void dlsch_channel_compensation(int **rxdataF_ext,
int **dl_ch_estimates_ext,
int **dl_ch_mag,
int **dl_ch_magb,
int **rxdataF_comp,
int **rho,
LTE_DL_FRAME_PARMS *frame_parms,
unsigned char symbol,
uint8_t first_symbol_flag,
unsigned char mod_order,
unsigned short nb_rb,
unsigned char output_shift,
PHY_MEASUREMENTS *phy_measurements)
{
#if defined(__i386) || defined(__x86_64)
unsigned short rb;
unsigned char aatx,aarx,symbol_mod,pilots=0;
__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;
symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
if (frame_parms->mode1_flag==1) // 10 out of 12 so don't reduce size
nb_rb=1+(5*nb_rb/6);
else
pilots=1;
}
for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; 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);
}
// printf("comp: rxdataF_comp %p, symbol %d\n",rxdataF_comp[0],symbol);
for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
dl_ch128 = (__m128i *)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag128 = (__m128i *)&dl_ch_mag[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag128b = (__m128i *)&dl_ch_magb[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
rxdataF128 = (__m128i *)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12];
rxdataF_comp128 = (__m128i *)&rxdataF_comp[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
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]);
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);
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) {
phy_measurements->rx_correlation[0][aarx] = signal_energy(&rho[aarx][symbol*frame_parms->N_RB_DL*12],rb*12);
}
}
}
_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))) {
if (frame_parms->mode1_flag==1) { // 10 out of 12 so don't reduce size
nb_rb=1+(5*nb_rb/6);
}
else {
pilots=1;
}
}
for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) {
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) {
phy_measurements->rx_correlation[0][aarx] = signal_energy(&rho[aarx][symbol*frame_parms->N_RB_DL*12],rb*12);
}
}
}
#endif
}
#if defined(__x86_64__) || defined(__i386__)
void prec2A_TM56_128(unsigned char pmi,__m128i *ch0,__m128i *ch1)
{
__m128i amp;
amp = _mm_set1_epi16(ONE_OVER_SQRT2_Q15);
switch (pmi) {
case 0 : // +1 +1
// print_shorts("phase 0 :ch0",ch0);
// print_shorts("phase 0 :ch1",ch1);
ch0[0] = _mm_adds_epi16(ch0[0],ch1[0]);
break;
case 1 : // +1 -1
// print_shorts("phase 1 :ch0",ch0);
// print_shorts("phase 1 :ch1",ch1);
ch0[0] = _mm_subs_epi16(ch0[0],ch1[0]);
// print_shorts("phase 1 :ch0-ch1",ch0);
break;
case 2 : // +1 +j
ch1[0] = _mm_sign_epi16(ch1[0],*(__m128i*)&conjugate[0]);
ch1[0] = _mm_shufflelo_epi16(ch1[0],_MM_SHUFFLE(2,3,0,1));
ch1[0] = _mm_shufflehi_epi16(ch1[0],_MM_SHUFFLE(2,3,0,1));
ch0[0] = _mm_subs_epi16(ch0[0],ch1[0]);
break; // +1 -j
case 3 :
ch1[0] = _mm_sign_epi16(ch1[0],*(__m128i*)&conjugate[0]);
ch1[0] = _mm_shufflelo_epi16(ch1[0],_MM_SHUFFLE(2,3,0,1));
ch1[0] = _mm_shufflehi_epi16(ch1[0],_MM_SHUFFLE(2,3,0,1));
ch0[0] = _mm_adds_epi16(ch0[0],ch1[0]);
break;
}
ch0[0] = _mm_mulhi_epi16(ch0[0],amp);
ch0[0] = _mm_slli_epi16(ch0[0],1);
_mm_empty();
_m_empty();
}
#elif defined(__arm__)
void prec2A_TM56_128(unsigned char pmi,int16x8_t* ch0,int16x8_t* ch1) {
int16x8_t amp;
int16_t conj[8]__attribute__((aligned(16))) = {1,-1,1,-1,1,-1,1,-1};
amp = vmovq_n_s16(ONE_OVER_SQRT2_Q15);
switch (pmi) {
case 0 : // +1 +1
// print_shorts("phase 0 :ch0",ch0);
// print_shorts("phase 0 :ch1",ch1);
ch0[0] = vqaddq_s16(ch0[0],ch1[0]);
break;
case 1 : // +1 -1
// print_shorts("phase 1 :ch0",ch0);
// print_shorts("phase 1 :ch1",ch1);
ch0[0] = vqsubq_s16(ch0[0],ch1[0]);
// print_shorts("phase 1 :ch0-ch1",ch0);
break;
case 2 : // +1 +j
ch1[0] = vrev32q_s16(vmulq_s16(ch1[0],*(int16x8_t*)conj));
ch0[0] = vqsubq_s16(ch0[0],ch1[0]);
break; // +1 -j
case 3 :
ch1[0] = vrev32q_s16(vmulq_s16(ch1[0],*(int16x8_t*)conj));
ch0[0] = vqaddq_s16(ch0[0],ch1[0]);
break;
}
ch0[0] = vqdmulhq_s16(ch0[0],amp);
}
#endif
// precoding is stream 0 .5(1,1) .5(1,-1) .5(1,1) .5(1,-1)
// stream 1 .5(1,-1) .5(1,1) .5(1,-1) .5(1,1)
// store "precoded" channel for stream 0 in ch0, stream 1 in ch1
short TM3_prec[8]__attribute__((aligned(16))) = {1,1,-1,-1,1,1,-1,-1} ;
#if defined(__x86_64__) || defined(__i386__)
static inline void prec2A_TM3_128(__m128i *ch0,__m128i *ch1) __attribute__((always_inline));
static inline void prec2A_TM3_128(__m128i *ch0,__m128i *ch1)
{
// __m128i amp = _mm_set1_epi16(ONE_OVER_SQRT2_Q15);
__m128i tmp0,tmp1;
// print_shorts("prec2A_TM3 ch0 (before):",ch0);
// print_shorts("prec2A_TM3 ch1 (before):",ch1);
tmp0 = ch0[0];
tmp1 = _mm_sign_epi16(ch1[0],((__m128i*)&TM3_prec)[0]);
// print_shorts("prec2A_TM3 ch1*s (mid):",(__m128i*)TM3_prec);
ch0[0] = _mm_adds_epi16(ch0[0],tmp1);
ch1[0] = _mm_subs_epi16(tmp0,tmp1);
// print_shorts("prec2A_TM3 ch0 (mid):",&tmp0);
// print_shorts("prec2A_TM3 ch1 (mid):",ch1);
ch0[0] = _mm_srai_epi16(ch0[0],1);
ch1[0] = _mm_srai_epi16(ch1[0],1);
// print_shorts("prec2A_TM3 ch0 (after):",ch0);
// print_shorts("prec2A_TM3 ch1 (after):",ch1);
}
#elif defined(__arm__)
void prec2A_TM3_128(int16x8_t* ch0, int16x8_t* ch1)
{
int16x8_t tmp0,tmp1;
tmp0 = ch0[0];
tmp1 = vmulq_s16(ch1[0],((int16x8_t*)&TM3_prec)[0]);
ch0[0] = vhaddq_s16(ch0[0],tmp1);
ch1[0] = vhsubq_s16(tmp0,tmp1);
}
#endif
// pmi = 0 => stream 0 (1,1), stream 1 (1,-1)
// pmi = 1 => stream 0 (1,j), stream 2 (1,-j)
#if defined(__x86_64__) || defined(__i386__)
void prec2A_TM4_128(int pmi,__m128i *ch0,__m128i *ch1)
{
__m128i amp;
amp = _mm_set1_epi16(ONE_OVER_SQRT2_Q15);
__m128i tmp0,tmp1;
if (pmi == 0) {
ch0[0] = _mm_adds_epi16(ch0[0],ch1[0]);
ch1[0] = _mm_subs_epi16(ch0[0],ch1[0]);
} else {
tmp0 = ch0[0];
tmp1 = _mm_sign_epi16(ch1[0],*(__m128i*)&conjugate[0]);
tmp1 = _mm_shufflelo_epi16(tmp1,_MM_SHUFFLE(2,3,0,1));
tmp1 = _mm_shufflehi_epi16(tmp1,_MM_SHUFFLE(2,3,0,1));
ch0[0] = _mm_adds_epi16(tmp0,tmp1);
ch1[0] = _mm_subs_epi16(tmp0,tmp1);
}
ch0[0] = _mm_mulhi_epi16(ch0[0],amp);
ch0[0] = _mm_slli_epi16(ch0[0],1);
ch1[0] = _mm_mulhi_epi16(ch1[0],amp);
ch1[0] = _mm_slli_epi16(ch1[0],1);
}
#elif defined(__arm__)
void prec2A_TM4_128(int pmi,int16x8_t *ch0,int16x8_t *ch1)
{
int16x8_t amp;
int16x8_t tmp0,tmp1;
int16_t conj[8]__attribute__((aligned(16))) = {1,-1,1,-1,1,-1,1,-1};
amp = vmovq_n_s16(ONE_OVER_SQRT2_Q15);
if (pmi == 0) {
ch0[0] = vqaddq_s16(ch0[0],ch1[0]);
ch1[0] = vqsubq_s16(ch0[0],ch1[0]);
} else {
tmp0 = ch0[0];
tmp1 = vrev32q_s16(vmulq_s16(ch1[0],*(int16x8_t*)conj));
ch0[0] = vqaddq_s16(tmp0,tmp1);
ch1[0] = vqsubq_s16(tmp0,tmp1);
}
ch0[0] = vqdmulhq_s16(ch0[0],amp);
ch1[0] = vqdmulhq_s16(ch1[0],amp);
}
#endif
void dlsch_channel_compensation_TM56(int **rxdataF_ext,
int **dl_ch_estimates_ext,
int **dl_ch_mag,
int **dl_ch_magb,
int **rxdataF_comp,
unsigned char *pmi_ext,
LTE_DL_FRAME_PARMS *frame_parms,
PHY_MEASUREMENTS *phy_measurements,
int eNB_id,
unsigned char symbol,
unsigned char mod_order,
unsigned short nb_rb,
unsigned char output_shift,
unsigned char dl_power_off)
{
#if defined(__x86_64__) || defined(__i386__)
unsigned short rb,Nre;
__m128i *dl_ch0_128,*dl_ch1_128,*dl_ch_mag128,*dl_ch_mag128b,*rxdataF128,*rxdataF_comp128;
unsigned char aarx=0,symbol_mod,pilots=0;
int precoded_signal_strength=0;
__m128i mmtmpD0,mmtmpD1,mmtmpD2,mmtmpD3,QAM_amp128,QAM_amp128b;
symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp)))
pilots=1;
//printf("comp prec: symbol %d, pilots %d\n",symbol, pilots);
if (mod_order == 4) {
QAM_amp128 = _mm_set1_epi16(QAM16_n1);
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<frame_parms->nb_antennas_rx; aarx++) {
dl_ch0_128 = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch1_128 = (__m128i *)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag128 = (__m128i *)&dl_ch_mag[aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag128b = (__m128i *)&dl_ch_magb[aarx][symbol*frame_parms->N_RB_DL*12];
rxdataF128 = (__m128i *)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12];
rxdataF_comp128 = (__m128i *)&rxdataF_comp[aarx][symbol*frame_parms->N_RB_DL*12];
for (rb=0; rb<nb_rb; rb++) {
// combine TX channels using precoder from pmi
#ifdef DEBUG_DLSCH_DEMOD
printf("mode 6 prec: rb %d, pmi->%d\n",rb,pmi_ext[rb]);
#endif
prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128[0],&dl_ch1_128[0]);
prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128[1],&dl_ch1_128[1]);
if (pilots==0) {
prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128[2],&dl_ch1_128[2]);
}
if (mod_order>2) {
// get channel amplitude if not QPSK
mmtmpD0 = _mm_madd_epi16(dl_ch0_128[0],dl_ch0_128[0]);
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
mmtmpD1 = _mm_madd_epi16(dl_ch0_128[1],dl_ch0_128[1]);
mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);
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_shorts("dl_ch_mag128[0]=",&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_ch0_128[2],dl_ch0_128[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);
//print_shorts("dl_ch_mag128b[0]=",&dl_ch_mag128b[0]);
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);
}
}
// MF multiply by conjugated channel
mmtmpD0 = _mm_madd_epi16(dl_ch0_128[0],rxdataF128[0]);
// print_ints("re",&mmtmpD0);
// mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
mmtmpD1 = _mm_shufflelo_epi16(dl_ch0_128[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_ch0_128[1],rxdataF128[1]);
// mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
mmtmpD1 = _mm_shufflelo_epi16(dl_ch0_128[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_ch0_128[2],rxdataF128[2]);
// mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
mmtmpD1 = _mm_shufflelo_epi16(dl_ch0_128[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_ch0_128+=3;
dl_ch1_128+=3;
dl_ch_mag128+=3;
dl_ch_mag128b+=3;
rxdataF128+=3;
rxdataF_comp128+=3;
} else {
dl_ch0_128+=2;
dl_ch1_128+=2;
dl_ch_mag128+=2;
dl_ch_mag128b+=2;
rxdataF128+=2;
rxdataF_comp128+=2;
}
}
Nre = (pilots==0) ? 12 : 8;
precoded_signal_strength += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
(nb_rb*Nre))) - (phy_measurements->n0_power[aarx]));
} // rx_antennas
phy_measurements->precoded_cqi_dB[eNB_id][0] = dB_fixed2(precoded_signal_strength,phy_measurements->n0_power_tot);
//printf("eNB_id %d, symbol %d: precoded CQI %d dB\n",eNB_id,symbol,
// phy_measurements->precoded_cqi_dB[eNB_id][0]);
_mm_empty();
_m_empty();
#elif defined(__arm__)
uint32_t rb,Nre;
uint32_t aarx,symbol_mod,pilots=0;
int16x4_t *dl_ch0_128,*dl_ch1_128,*rxdataF128;
int16x8_t *dl_ch0_128b,*dl_ch1_128b;
int32x4_t mmtmpD0,mmtmpD1,mmtmpD0b,mmtmpD1b;
int16x8_t *dl_ch_mag128,*dl_ch_mag128b,mmtmpD2,mmtmpD3,mmtmpD4,*rxdataF_comp128;
int16x8_t QAM_amp128,QAM_amp128b;
int16_t conj[4]__attribute__((aligned(16))) = {1,-1,1,-1};
int32x4_t output_shift128 = vmovq_n_s32(-(int32_t)output_shift);
int32_t precoded_signal_strength=0;
symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
if (frame_parms->mode1_flag==1) // 10 out of 12 so don't reduce size
{ nb_rb=1+(5*nb_rb/6); }
else
{ pilots=1; }
}
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_ch0_128 = (int16x4_t*)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch1_128 = (int16x4_t*)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch0_128b = (int16x8_t*)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch1_128b = (int16x8_t*)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag128 = (int16x8_t*)&dl_ch_mag[aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag128b = (int16x8_t*)&dl_ch_magb[aarx][symbol*frame_parms->N_RB_DL*12];
rxdataF128 = (int16x4_t*)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12];
rxdataF_comp128 = (int16x8_t*)&rxdataF_comp[aarx][symbol*frame_parms->N_RB_DL*12];
for (rb=0; rb<nb_rb; rb++) {
#ifdef DEBUG_DLSCH_DEMOD
printf("mode 6 prec: rb %d, pmi->%d\n",rb,pmi_ext[rb]);
#endif
prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128b[0],&dl_ch1_128b[0]);
prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128b[1],&dl_ch1_128b[1]);
if (pilots==0) {
prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128b[2],&dl_ch1_128b[2]);
}
if (mod_order>2) {
// get channel amplitude if not QPSK
mmtmpD0 = vmull_s16(dl_ch0_128[0], dl_ch0_128[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_ch0_128[1], dl_ch0_128[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_ch0_128[2], dl_ch0_128[2]);
mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
mmtmpD1 = vmull_s16(dl_ch0_128[3], dl_ch0_128[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_ch0_128[4], dl_ch0_128[4]);
mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
mmtmpD1 = vmull_s16(dl_ch0_128[5], dl_ch0_128[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_ch0_128[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_ch0_128[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_ch0_128[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_ch0_128[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] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
mmtmpD0 = vmull_s16(dl_ch0_128[2], rxdataF128[2]);
mmtmpD1 = vmull_s16(dl_ch0_128[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_ch0_128[2],*(int16x4_t*)conj)), rxdataF128[2]);
mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[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] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
if (pilots==0) {
mmtmpD0 = vmull_s16(dl_ch0_128[4], rxdataF128[4]);
mmtmpD1 = vmull_s16(dl_ch0_128[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_ch0_128[4],*(int16x4_t*)conj)), rxdataF128[4]);
mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[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] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
dl_ch0_128+=6;
dl_ch1_128+=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_ch0_128+=4;
dl_ch1_128+=4;
dl_ch_mag128+=2;
dl_ch_mag128b+=2;
rxdataF128+=4;
rxdataF_comp128+=2;
}
}
Nre = (pilots==0) ? 12 : 8;
precoded_signal_strength += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
(nb_rb*Nre))) - (phy_measurements->n0_power[aarx]));
// rx_antennas
}
phy_measurements->precoded_cqi_dB[eNB_id][0] = dB_fixed2(precoded_signal_strength,phy_measurements->n0_power_tot);
#endif
}
void dlsch_channel_compensation_TM3(LTE_DL_FRAME_PARMS *frame_parms,
LTE_UE_PDSCH *pdsch_vars,
PHY_MEASUREMENTS *measurements,
int eNB_id,
unsigned char symbol,
unsigned char mod_order0,
unsigned char mod_order1,
int round,
unsigned short nb_rb,
unsigned char output_shift)
{
#if defined(__x86_64__) || defined(__i386__)
unsigned short rb,Nre;
__m128i *dl_ch0_128,*dl_ch1_128,*dl_ch_mag0_128,*dl_ch_mag1_128,*dl_ch_mag0_128b,*dl_ch_mag1_128b,*rxdataF128,*rxdataF_comp0_128,*rxdataF_comp1_128;
unsigned char aarx=0,symbol_mod,pilots=0;
int precoded_signal_strength0=0,precoded_signal_strength1=0;
int **rxdataF_ext = pdsch_vars->rxdataF_ext;
int **dl_ch_estimates_ext = pdsch_vars->dl_ch_estimates_ext;
int **dl_ch_mag0 = pdsch_vars->dl_ch_mag0;
int **dl_ch_mag1 = pdsch_vars->dl_ch_mag1;
int **dl_ch_magb0 = pdsch_vars->dl_ch_magb0;
int **dl_ch_magb1 = pdsch_vars->dl_ch_magb1;
int **rxdataF_comp0 = pdsch_vars->rxdataF_comp0;
int **rxdataF_comp1 = pdsch_vars->rxdataF_comp1[round]; //?
__m128i mmtmpD0,mmtmpD1,mmtmpD2,mmtmpD3,QAM_amp0_128,QAM_amp0_128b,QAM_amp1_128,QAM_amp1_128b;
symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp)))
pilots=1;
//printf("comp prec: symbol %d, pilots %d\n",symbol, pilots);
if (mod_order0 == 4) {
QAM_amp0_128 = _mm_set1_epi16(QAM16_n1);
QAM_amp0_128b = _mm_setzero_si128();
} else if (mod_order0 == 6) {
QAM_amp0_128 = _mm_set1_epi16(QAM64_n1);
QAM_amp0_128b = _mm_set1_epi16(QAM64_n2);
}
if (mod_order1 == 4) {
QAM_amp1_128 = _mm_set1_epi16(QAM16_n1);
QAM_amp1_128b = _mm_setzero_si128();
} else if (mod_order1 == 6) {
QAM_amp1_128 = _mm_set1_epi16(QAM64_n1);
QAM_amp1_128b = _mm_set1_epi16(QAM64_n2);
}
for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
dl_ch0_128 = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12]; // hr,0
dl_ch1_128 = (__m128i *)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12]; // hr,1
dl_ch_mag0_128 = (__m128i *)&dl_ch_mag0[aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag0_128b = (__m128i *)&dl_ch_magb0[aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag1_128 = (__m128i *)&dl_ch_mag1[aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag1_128b = (__m128i *)&dl_ch_magb1[aarx][symbol*frame_parms->N_RB_DL*12];
rxdataF128 = (__m128i *)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12]; // yr
rxdataF_comp0_128 = (__m128i *)&rxdataF_comp0[aarx][symbol*frame_parms->N_RB_DL*12]; // yr,0 = yr * conj(hr,0)
rxdataF_comp1_128 = (__m128i *)&rxdataF_comp1[aarx][symbol*frame_parms->N_RB_DL*12]; // yr,1 = yr * conj(hr,1)
for (rb=0; rb<nb_rb; rb++) {
// combine TX channels using precoder from pmi
prec2A_TM3_128(&dl_ch0_128[0],&dl_ch1_128[0]);
prec2A_TM3_128(&dl_ch0_128[1],&dl_ch1_128[1]);
if (pilots==0) {
prec2A_TM3_128(&dl_ch0_128[2],&dl_ch1_128[2]);
}
if (mod_order0>2) {
// get channel amplitude if not QPSK
mmtmpD0 = _mm_madd_epi16(dl_ch0_128[0],dl_ch0_128[0]);
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
mmtmpD1 = _mm_madd_epi16(dl_ch0_128[1],dl_ch0_128[1]);
mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);
dl_ch_mag0_128[0] = _mm_unpacklo_epi16(mmtmpD0,mmtmpD0);
dl_ch_mag0_128b[0] = dl_ch_mag0_128[0];
dl_ch_mag0_128[0] = _mm_mulhi_epi16(dl_ch_mag0_128[0],QAM_amp0_128);
dl_ch_mag0_128[0] = _mm_slli_epi16(dl_ch_mag0_128[0],1);
// print_shorts("dl_ch_mag0_128[0]=",&dl_ch_mag0_128[0]);
dl_ch_mag0_128[1] = _mm_unpackhi_epi16(mmtmpD0,mmtmpD0);
dl_ch_mag0_128b[1] = dl_ch_mag0_128[1];
dl_ch_mag0_128[1] = _mm_mulhi_epi16(dl_ch_mag0_128[1],QAM_amp0_128);
dl_ch_mag0_128[1] = _mm_slli_epi16(dl_ch_mag0_128[1],1);
if (pilots==0) {
mmtmpD0 = _mm_madd_epi16(dl_ch0_128[2],dl_ch0_128[2]);
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
mmtmpD1 = _mm_packs_epi32(mmtmpD0,mmtmpD0);
dl_ch_mag0_128[2] = _mm_unpacklo_epi16(mmtmpD1,mmtmpD1);
dl_ch_mag0_128b[2] = dl_ch_mag0_128[2];
dl_ch_mag0_128[2] = _mm_mulhi_epi16(dl_ch_mag0_128[2],QAM_amp0_128);
dl_ch_mag0_128[2] = _mm_slli_epi16(dl_ch_mag0_128[2],1);
}
dl_ch_mag0_128b[0] = _mm_mulhi_epi16(dl_ch_mag0_128b[0],QAM_amp0_128b);
dl_ch_mag0_128b[0] = _mm_slli_epi16(dl_ch_mag0_128b[0],1);
//print_shorts("dl_ch_mag128b[0]=",&dl_ch_mag128b[0]);
dl_ch_mag0_128b[1] = _mm_mulhi_epi16(dl_ch_mag0_128b[1],QAM_amp0_128b);
dl_ch_mag0_128b[1] = _mm_slli_epi16(dl_ch_mag0_128b[1],1);
if (pilots==0) {
dl_ch_mag0_128b[2] = _mm_mulhi_epi16(dl_ch_mag0_128b[2],QAM_amp0_128b);
dl_ch_mag0_128b[2] = _mm_slli_epi16(dl_ch_mag0_128b[2],1);
}
}
if (mod_order1>2) {
// get channel amplitude if not QPSK
mmtmpD0 = _mm_madd_epi16(dl_ch1_128[0],dl_ch1_128[0]);
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
mmtmpD1 = _mm_madd_epi16(dl_ch1_128[1],dl_ch1_128[1]);
mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);
dl_ch_mag1_128[0] = _mm_unpacklo_epi16(mmtmpD0,mmtmpD0);
dl_ch_mag1_128b[0] = dl_ch_mag1_128[0];
dl_ch_mag1_128[0] = _mm_mulhi_epi16(dl_ch_mag1_128[0],QAM_amp1_128);
dl_ch_mag1_128[0] = _mm_slli_epi16(dl_ch_mag1_128[0],1);
//print_shorts("dl_ch_mag128[0]=",&dl_ch_mag128[0]);
dl_ch_mag1_128[1] = _mm_unpackhi_epi16(mmtmpD0,mmtmpD0);
dl_ch_mag1_128b[1] = dl_ch_mag1_128[1];
dl_ch_mag1_128[1] = _mm_mulhi_epi16(dl_ch_mag1_128[1],QAM_amp1_128);
dl_ch_mag1_128[1] = _mm_slli_epi16(dl_ch_mag1_128[1],1);
if (pilots==0) {
mmtmpD0 = _mm_madd_epi16(dl_ch1_128[2],dl_ch1_128[2]);
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
mmtmpD1 = _mm_packs_epi32(mmtmpD0,mmtmpD0);
dl_ch_mag1_128[2] = _mm_unpacklo_epi16(mmtmpD1,mmtmpD1);
dl_ch_mag1_128b[2] = dl_ch_mag1_128[2];
dl_ch_mag1_128[2] = _mm_mulhi_epi16(dl_ch_mag1_128[2],QAM_amp1_128);
dl_ch_mag1_128[2] = _mm_slli_epi16(dl_ch_mag1_128[2],1);
}
dl_ch_mag1_128b[0] = _mm_mulhi_epi16(dl_ch_mag1_128b[0],QAM_amp1_128b);
dl_ch_mag1_128b[0] = _mm_slli_epi16(dl_ch_mag1_128b[0],1);
//print_shorts("dl_ch_mag128b[0]=",&dl_ch_mag128b[0]);
dl_ch_mag1_128b[1] = _mm_mulhi_epi16(dl_ch_mag1_128b[1],QAM_amp1_128b);
dl_ch_mag1_128b[1] = _mm_slli_epi16(dl_ch_mag1_128b[1],1);
if (pilots==0) {
dl_ch_mag1_128b[2] = _mm_mulhi_epi16(dl_ch_mag1_128b[2],QAM_amp1_128b);
dl_ch_mag1_128b[2] = _mm_slli_epi16(dl_ch_mag1_128b[2],1);
}
}
// layer 0
// MF multiply by conjugated channel
mmtmpD0 = _mm_madd_epi16(dl_ch0_128[0],rxdataF128[0]);
//print_ints("re",&mmtmpD0);
// mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
mmtmpD1 = _mm_shufflelo_epi16(dl_ch0_128[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,rxdataF128[0]);
// print_ints("im",&mmtmpD1);
// mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
// printf("Shift: %d\n",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_comp0_128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
// print_shorts("rx:",rxdataF128);
// print_shorts("ch:",dl_ch0_128);
// print_shorts("pack:",rxdataF_comp0_128);
// multiply by conjugated channel
mmtmpD0 = _mm_madd_epi16(dl_ch0_128[1],rxdataF128[1]);
// mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
mmtmpD1 = _mm_shufflelo_epi16(dl_ch0_128[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_comp0_128[1] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
// print_shorts("rx:",rxdataF128+1);
// print_shorts("ch:",dl_ch0_128+1);
// print_shorts("pack:",rxdataF_comp128+1);
if (pilots==0) {
// multiply by conjugated channel
mmtmpD0 = _mm_madd_epi16(dl_ch0_128[2],rxdataF128[2]);
// mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
mmtmpD1 = _mm_shufflelo_epi16(dl_ch0_128[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_comp0_128[2] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
// print_shorts("rx:",rxdataF128+2);
// print_shorts("ch:",dl_ch0_128+2);
// print_shorts("pack:",rxdataF_comp128+2);
} else {
}
// layer 1
// MF multiply by conjugated channel
mmtmpD0 = _mm_madd_epi16(dl_ch1_128[0],rxdataF128[0]);
// print_ints("re",&mmtmpD0);
// mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
mmtmpD1 = _mm_shufflelo_epi16(dl_ch1_128[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_comp1_128[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_ch1_128[1],rxdataF128[1]);
// mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
mmtmpD1 = _mm_shufflelo_epi16(dl_ch1_128[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_comp1_128[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_ch1_128[2],rxdataF128[2]);
// mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
mmtmpD1 = _mm_shufflelo_epi16(dl_ch1_128[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_comp1_128[2] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
// print_shorts("rx:",rxdataF128+2);
// print_shorts("ch:",dl_ch128+2);
// print_shorts("pack:",rxdataF_comp128+2);
dl_ch0_128+=3;
dl_ch1_128+=3;
dl_ch_mag0_128+=3;
dl_ch_mag1_128+=3;
dl_ch_mag0_128b+=3;
dl_ch_mag1_128b+=3;
rxdataF128+=3;
rxdataF_comp0_128+=3;
rxdataF_comp1_128+=3;
} else {
dl_ch0_128+=2;
dl_ch1_128+=2;
dl_ch_mag0_128+=2;
dl_ch_mag1_128+=2;
dl_ch_mag0_128b+=2;
dl_ch_mag1_128b+=2;
rxdataF128+=2;
rxdataF_comp0_128+=2;
rxdataF_comp1_128+=2;
}
} // rb loop
}
Nre = (pilots==0) ? 12 : 8;
precoded_signal_strength0 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
(nb_rb*Nre))) - (measurements->n0_power[aarx]));
precoded_signal_strength1 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx+2][symbol*frame_parms->N_RB_DL*Nre],
(nb_rb*Nre))) - (measurements->n0_power[aarx]));
measurements->precoded_cqi_dB[eNB_id][0] = dB_fixed2(precoded_signal_strength0,measurements->n0_power_tot);
measurements->precoded_cqi_dB[eNB_id][1] = dB_fixed2(precoded_signal_strength1,measurements->n0_power_tot);
//printf("eNB_id %d, symbol %d: precoded CQI %d dB\n",eNB_id,symbol,
// measurements->precoded_cqi_dB[eNB_id][0]);
_mm_empty();
_m_empty();
#elif defined(__arm__)
unsigned short rb,Nre;
unsigned char aarx,symbol_mod,pilots=0;
int precoded_signal_strength0=0,precoded_signal_strength1=0;
int16x4_t *dl_ch0_128,*rxdataF128;
int16x4_t *dl_ch1_128;
int16x8_t *dl_ch0_128b,*dl_ch1_128b;
int32x4_t mmtmpD0,mmtmpD1,mmtmpD0b,mmtmpD1b;
int16x8_t *dl_ch_mag0_128,*dl_ch_mag0_128b,*dl_ch_mag1_128,*dl_ch_mag1_128b,mmtmpD2,mmtmpD3,mmtmpD4,*rxdataF_comp0_128,*rxdataF_comp1_128;
int16x8_t QAM_amp0_128,QAM_amp0_128b,QAM_amp1_128,QAM_amp1_128b;
int32x4_t output_shift128 = vmovq_n_s32(-(int32_t)output_shift);
int **rxdataF_ext = pdsch_vars->rxdataF_ext;
int **dl_ch_estimates_ext = pdsch_vars->dl_ch_estimates_ext;
int **dl_ch_mag0 = pdsch_vars->dl_ch_mag0;
int **dl_ch_mag1 = pdsch_vars->dl_ch_mag1;
int **dl_ch_magb0 = pdsch_vars->dl_ch_magb0;
int **dl_ch_magb1 = pdsch_vars->dl_ch_magb1;
int **rxdataF_comp0 = pdsch_vars->rxdataF_comp0;
int **rxdataF_comp1 = pdsch_vars->rxdataF_comp1[round]; //?
int16_t conj[4]__attribute__((aligned(16))) = {1,-1,1,-1};
symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
if (frame_parms->mode1_flag==1) // 10 out of 12 so don't reduce size
{ nb_rb=1+(5*nb_rb/6); }
else
{ pilots=1; }
}
if (mod_order0 == 4) {
QAM_amp0_128 = vmovq_n_s16(QAM16_n1); // 2/sqrt(10)
QAM_amp0_128b = vmovq_n_s16(0);
} else if (mod_order0 == 6) {
QAM_amp0_128 = vmovq_n_s16(QAM64_n1); //
QAM_amp0_128b = vmovq_n_s16(QAM64_n2);
}
if (mod_order1 == 4) {
QAM_amp1_128 = vmovq_n_s16(QAM16_n1); // 2/sqrt(10)
QAM_amp1_128b = vmovq_n_s16(0);
} else if (mod_order1 == 6) {
QAM_amp1_128 = vmovq_n_s16(QAM64_n1); //
QAM_amp1_128b = 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_ch0_128 = (int16x4_t*)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch1_128 = (int16x4_t*)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch0_128b = (int16x8_t*)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch1_128b = (int16x8_t*)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag0_128 = (int16x8_t*)&dl_ch_mag0[aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag0_128b = (int16x8_t*)&dl_ch_magb0[aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag1_128 = (int16x8_t*)&dl_ch_mag1[aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag1_128b = (int16x8_t*)&dl_ch_magb1[aarx][symbol*frame_parms->N_RB_DL*12];
rxdataF128 = (int16x4_t*)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12];
rxdataF_comp0_128 = (int16x8_t*)&rxdataF_comp0[aarx][symbol*frame_parms->N_RB_DL*12];
rxdataF_comp1_128 = (int16x8_t*)&rxdataF_comp1[aarx][symbol*frame_parms->N_RB_DL*12];
for (rb=0; rb<nb_rb; rb++) {
#ifdef DEBUG_DLSCH_DEMOD
printf("mode 6 prec: rb %d, pmi->%d\n",rb,pmi_ext[rb]);
#endif
prec2A_TM3_128(&dl_ch0_128b[0],&dl_ch1_128b[0]);
prec2A_TM3_128(&dl_ch0_128b[1],&dl_ch1_128b[1]);
if (pilots==0) {
prec2A_TM3_128(&dl_ch0_128b[2],&dl_ch1_128b[2]);
}
if (mod_order0>2) {
// get channel amplitude if not QPSK
mmtmpD0 = vmull_s16(dl_ch0_128[0], dl_ch0_128[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_ch0_128[1], dl_ch0_128[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_ch0_128[2], dl_ch0_128[2]);
mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
mmtmpD1 = vmull_s16(dl_ch0_128[3], dl_ch0_128[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_ch0_128[4], dl_ch0_128[4]);
mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
mmtmpD1 = vmull_s16(dl_ch0_128[5], dl_ch0_128[5]);
mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
mmtmpD4 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
}
dl_ch_mag0_128b[0] = vqdmulhq_s16(mmtmpD2,QAM_amp0_128b);
dl_ch_mag0_128b[1] = vqdmulhq_s16(mmtmpD3,QAM_amp0_128b);
dl_ch_mag0_128[0] = vqdmulhq_s16(mmtmpD2,QAM_amp0_128);
dl_ch_mag0_128[1] = vqdmulhq_s16(mmtmpD3,QAM_amp0_128);
if (pilots==0) {
dl_ch_mag0_128b[2] = vqdmulhq_s16(mmtmpD4,QAM_amp0_128b);
dl_ch_mag0_128[2] = vqdmulhq_s16(mmtmpD4,QAM_amp0_128);
}
}
if (mod_order1>2) {
// get channel amplitude if not QPSK
mmtmpD0 = vmull_s16(dl_ch1_128[0], dl_ch1_128[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_ch1_128[1], dl_ch1_128[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_ch1_128[2], dl_ch1_128[2]);
mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
mmtmpD1 = vmull_s16(dl_ch1_128[3], dl_ch1_128[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_ch1_128[4], dl_ch1_128[4]);
mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
mmtmpD1 = vmull_s16(dl_ch1_128[5], dl_ch1_128[5]);
mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
mmtmpD4 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
}
dl_ch_mag1_128b[0] = vqdmulhq_s16(mmtmpD2,QAM_amp1_128b);
dl_ch_mag1_128b[1] = vqdmulhq_s16(mmtmpD3,QAM_amp1_128b);
dl_ch_mag1_128[0] = vqdmulhq_s16(mmtmpD2,QAM_amp1_128);
dl_ch_mag1_128[1] = vqdmulhq_s16(mmtmpD3,QAM_amp1_128);
if (pilots==0) {
dl_ch_mag1_128b[2] = vqdmulhq_s16(mmtmpD4,QAM_amp1_128b);
dl_ch_mag1_128[2] = vqdmulhq_s16(mmtmpD4,QAM_amp1_128);
}
}
mmtmpD0 = vmull_s16(dl_ch0_128[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_ch0_128[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_ch0_128[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_ch0_128[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_comp0_128[0] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
mmtmpD0 = vmull_s16(dl_ch0_128[2], rxdataF128[2]);
mmtmpD1 = vmull_s16(dl_ch0_128[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_ch0_128[2],*(int16x4_t*)conj)), rxdataF128[2]);
mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[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_comp0_128[1] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
// second stream
mmtmpD0 = vmull_s16(dl_ch1_128[0], rxdataF128[0]);
mmtmpD1 = vmull_s16(dl_ch1_128[1], rxdataF128[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_ch0_128[0],*(int16x4_t*)conj)), rxdataF128[0]);
mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[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_comp1_128[0] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
mmtmpD0 = vmull_s16(dl_ch1_128[2], rxdataF128[2]);
mmtmpD1 = vmull_s16(dl_ch1_128[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_ch0_128[2],*(int16x4_t*)conj)), rxdataF128[2]);
mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[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_comp1_128[1] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
if (pilots==0) {
mmtmpD0 = vmull_s16(dl_ch0_128[4], rxdataF128[4]);
mmtmpD1 = vmull_s16(dl_ch0_128[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_ch0_128[4],*(int16x4_t*)conj)), rxdataF128[4]);
mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[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_comp0_128[2] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
mmtmpD0 = vmull_s16(dl_ch1_128[4], rxdataF128[4]);
mmtmpD1 = vmull_s16(dl_ch1_128[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_ch1_128[4],*(int16x4_t*)conj)), rxdataF128[4]);
mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch1_128[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_comp1_128[2] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
}
}
Nre = (pilots==0) ? 12 : 8;
// rx_antennas
}
Nre = (pilots==0) ? 12 : 8;
precoded_signal_strength0 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
(nb_rb*Nre))) - (measurements->n0_power[aarx]));
precoded_signal_strength1 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx+2][symbol*frame_parms->N_RB_DL*Nre],
(nb_rb*Nre))) - (measurements->n0_power[aarx]));
measurements->precoded_cqi_dB[eNB_id][0] = dB_fixed2(precoded_signal_strength0,measurements->n0_power_tot);
measurements->precoded_cqi_dB[eNB_id][1] = dB_fixed2(precoded_signal_strength1,measurements->n0_power_tot);
#endif
}
void dlsch_dual_stream_correlation(LTE_DL_FRAME_PARMS *frame_parms,
unsigned char symbol,
unsigned short nb_rb,
int **dl_ch_estimates_ext,
int **dl_ch_estimates_ext_i,
int **dl_ch_rho_ext,
unsigned char output_shift)
{
#if defined(__x86_64__)||defined(__i386__)
unsigned short rb;
__m128i *dl_ch128,*dl_ch128i,*dl_ch_rho128,mmtmpD0,mmtmpD1,mmtmpD2,mmtmpD3;
unsigned char aarx,symbol_mod,pilots=0;
// printf("dlsch_dual_stream_correlation: symbol %d\n",symbol);
symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
pilots=1;
}
// printf("Dual stream correlation (%p)\n",dl_ch_estimates_ext_i);
for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
dl_ch128 = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
if (dl_ch_estimates_ext_i == NULL) // TM3/4
dl_ch128i = (__m128i *)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
else
dl_ch128i = (__m128i *)&dl_ch_estimates_ext_i[aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch_rho128 = (__m128i *)&dl_ch_rho_ext[aarx][symbol*frame_parms->N_RB_DL*12];
for (rb=0; rb<nb_rb; rb++) {
// 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);
// 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);
if (pilots==0) {
// multiply by conjugated channel
mmtmpD0 = _mm_madd_epi16(dl_ch128[2],dl_ch128i[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_ch128i[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);
dl_ch_rho128[2] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
dl_ch128+=3;
dl_ch128i+=3;
dl_ch_rho128+=3;
} else {
dl_ch128+=2;
dl_ch128i+=2;
dl_ch_rho128+=2;
}
}
}
_mm_empty();
_m_empty();
#elif defined(__arm__)
#endif
}
void dlsch_detection_mrc(LTE_DL_FRAME_PARMS *frame_parms,
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 symbol,
unsigned short nb_rb,
unsigned char dual_stream_UE)
{
#if defined(__x86_64__)||defined(__i386__)
unsigned char aatx;
int i;
__m128i *rxdataF_comp128_0,*rxdataF_comp128_1,*rxdataF_comp128_i0,*rxdataF_comp128_i1,*dl_ch_mag128_0,*dl_ch_mag128_1,*dl_ch_mag128_0b,*dl_ch_mag128_1b,*rho128_0,*rho128_1,*rho128_i0,*rho128_i1,
*dl_ch_mag128_i0,*dl_ch_mag128_i1,*dl_ch_mag128_i0b,*dl_ch_mag128_i1b;
if (frame_parms->nb_antennas_rx>1) {
for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) {
rxdataF_comp128_0 = (__m128i *)&rxdataF_comp[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];
rxdataF_comp128_1 = (__m128i *)&rxdataF_comp[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag128_0 = (__m128i *)&dl_ch_mag[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag128_1 = (__m128i *)&dl_ch_mag[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag128_0b = (__m128i *)&dl_ch_magb[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag128_1b = (__m128i *)&dl_ch_magb[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];
// MRC on each re of rb, both on MF output and magnitude (for 16QAM/64QAM llr computation)
for (i=0; i<nb_rb*3; 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][symbol*frame_parms->N_RB_DL*12];
rho128_1 = (__m128i *) &rho[1][symbol*frame_parms->N_RB_DL*12];
for (i=0; i<nb_rb*3; i++) {
// print_shorts("mrc rho0:",&rho128_0[i]);
// print_shorts("mrc rho1:",&rho128_1[i]);
rho128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_0[i],1),_mm_srai_epi16(rho128_1[i],1));
}
}
if (dual_stream_UE == 1) {
rho128_i0 = (__m128i *) &rho_i[0][symbol*frame_parms->N_RB_DL*12];
rho128_i1 = (__m128i *) &rho_i[1][symbol*frame_parms->N_RB_DL*12];
rxdataF_comp128_i0 = (__m128i *)&rxdataF_comp_i[0][symbol*frame_parms->N_RB_DL*12];
rxdataF_comp128_i1 = (__m128i *)&rxdataF_comp_i[1][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag128_i0 = (__m128i *)&dl_ch_mag_i[0][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag128_i1 = (__m128i *)&dl_ch_mag_i[1][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag128_i0b = (__m128i *)&dl_ch_magb_i[0][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag128_i1b = (__m128i *)&dl_ch_magb_i[1][symbol*frame_parms->N_RB_DL*12];
for (i=0; i<nb_rb*3; i++) {
rxdataF_comp128_i0[i] = _mm_adds_epi16(_mm_srai_epi16(rxdataF_comp128_i0[i],1),_mm_srai_epi16(rxdataF_comp128_i1[i],1));
rho128_i0[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_i0[i],1),_mm_srai_epi16(rho128_i1[i],1));
dl_ch_mag128_i0[i] = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_i0[i],1),_mm_srai_epi16(dl_ch_mag128_i1[i],1));
dl_ch_mag128_i0b[i] = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_i0b[i],1),_mm_srai_epi16(dl_ch_mag128_i1b[i],1));
}
}
}
_mm_empty();
_m_empty();
#elif defined(__arm__)
unsigned char aatx;
int i;
int16x8_t *rxdataF_comp128_0,*rxdataF_comp128_1,*rxdataF_comp128_i0,*rxdataF_comp128_i1,*dl_ch_mag128_0,*dl_ch_mag128_1,*dl_ch_mag128_0b,*dl_ch_mag128_1b,*rho128_0,*rho128_1,*rho128_i0,*rho128_i1,*dl_ch_mag128_i0,*dl_ch_mag128_i1,*dl_ch_mag128_i0b,*dl_ch_mag128_i1b;
if (frame_parms->nb_antennas_rx>1) {
for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) {
rxdataF_comp128_0 = (int16x8_t *)&rxdataF_comp[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];
rxdataF_comp128_1 = (int16x8_t *)&rxdataF_comp[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag128_0 = (int16x8_t *)&dl_ch_mag[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag128_1 = (int16x8_t *)&dl_ch_mag[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag128_0b = (int16x8_t *)&dl_ch_magb[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag128_1b = (int16x8_t *)&dl_ch_magb[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];
// MRC on each re of rb, both on MF output and magnitude (for 16QAM/64QAM llr computation)
for (i=0; i<nb_rb*3; i++) {
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][symbol*frame_parms->N_RB_DL*12];
rho128_1 = (int16x8_t *) &rho[1][symbol*frame_parms->N_RB_DL*12];
for (i=0; i<nb_rb*3; i++) {
// print_shorts("mrc rho0:",&rho128_0[i]);
// print_shorts("mrc rho1:",&rho128_1[i]);
rho128_0[i] = vhaddq_s16(rho128_0[i],rho128_1[i]);
}
}
if (dual_stream_UE == 1) {
rho128_i0 = (int16x8_t *) &rho_i[0][symbol*frame_parms->N_RB_DL*12];
rho128_i1 = (int16x8_t *) &rho_i[1][symbol*frame_parms->N_RB_DL*12];
rxdataF_comp128_i0 = (int16x8_t *)&rxdataF_comp_i[0][symbol*frame_parms->N_RB_DL*12];
rxdataF_comp128_i1 = (int16x8_t *)&rxdataF_comp_i[1][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag128_i0 = (int16x8_t *)&dl_ch_mag_i[0][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag128_i1 = (int16x8_t *)&dl_ch_mag_i[1][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag128_i0b = (int16x8_t *)&dl_ch_magb_i[0][symbol*frame_parms->N_RB_DL*12];
dl_ch_mag128_i1b = (int16x8_t *)&dl_ch_magb_i[1][symbol*frame_parms->N_RB_DL*12];
for (i=0; i<nb_rb*3; i++) {
rxdataF_comp128_i0[i] = vhaddq_s16(rxdataF_comp128_i0[i],rxdataF_comp128_i1[i]);
rho128_i0[i] = vhaddq_s16(rho128_i0[i],rho128_i1[i]);
dl_ch_mag128_i0[i] = vhaddq_s16(dl_ch_mag128_i0[i],dl_ch_mag128_i1[i]);
dl_ch_mag128_i0b[i] = vhaddq_s16(dl_ch_mag128_i0b[i],dl_ch_mag128_i1b[i]);
}
}
}
#endif
}
void dlsch_scale_channel(int **dl_ch_estimates_ext,
LTE_DL_FRAME_PARMS *frame_parms,
LTE_UE_DLSCH_t **dlsch,
uint8_t symbol,
unsigned short nb_rb)
{
#if defined(__x86_64__)||defined(__i386__)
short rb, ch_amp;
unsigned char aatx,aarx,pilots=0,symbol_mod;
__m128i *dl_ch128, ch_amp128;
symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
if (frame_parms->mode1_flag==1) // 10 out of 12 so don't reduce size
nb_rb=1+(5*nb_rb/6);
else
pilots=1;
}
// Determine scaling amplitude based the symbol
ch_amp = ((pilots) ? (dlsch[0]->sqrt_rho_b) : (dlsch[0]->sqrt_rho_a));
// LOG_D(PHY,"Scaling PDSCH Chest in OFDM symbol %d by %d\n",symbol_mod,ch_amp);
ch_amp128 = _mm_set1_epi16(ch_amp); // Q3.13
for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) {
for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
dl_ch128=(__m128i *)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
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 dlsch_channel_level(int **dl_ch_estimates_ext,
LTE_DL_FRAME_PARMS *frame_parms,
int *avg,
uint8_t symbol,
unsigned short nb_rb)
{
#if defined(__x86_64__)||defined(__i386__)
short rb;
unsigned char aatx,aarx,nre=12,symbol_mod;
__m128i *dl_ch128,avg128D;
symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++)
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*frame_parms->N_RB_DL*12];
for (rb=0; rb<nb_rb; rb++) {
// printf("rb %d : ",rb);
// print_shorts("ch",&dl_ch128[0]);
avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[0],dl_ch128[0]));
avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[1],dl_ch128[1]));
if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0)) {
dl_ch128+=2;
} else {
avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[2],dl_ch128[2]));
dl_ch128+=3;
}
/*
if (rb==0) {
print_shorts("dl_ch128",&dl_ch128[0]);
print_shorts("dl_ch128",&dl_ch128[1]);
print_shorts("dl_ch128",&dl_ch128[2]);
}
*/
}
if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0))
nre=8;
else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==1))
nre=10;
else
nre=12;
avg[(aatx<<1)+aarx] = (((int*)&avg128D)[0] +
((int*)&avg128D)[1] +
((int*)&avg128D)[2] +
((int*)&avg128D)[3])/(nb_rb*nre);
// 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;
for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++)
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]));
if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0)) {
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_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0))
nre=8;
else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==1))
nre=10;
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
}
//compute average channel_level of effective (precoded) channel
void dlsch_channel_level_TM3(int **dl_ch_estimates_ext,
LTE_DL_FRAME_PARMS *frame_parms,
int *avg,
uint8_t symbol,
unsigned short nb_rb)
{
#if defined(__x86_64__)||defined(__i386__)
short rb;
unsigned char aarx,nre=12,symbol_mod;
__m128i *dl_ch0_128,*dl_ch1_128, dl_ch0_128_tmp, dl_ch1_128_tmp,avg128D;
symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
//clear average level
avg128D = _mm_setzero_si128();
avg[0] = 0;
avg[1] = 0;
// 5 is always a symbol with no pilots for both normal and extended prefix
if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0))
nre=8;
else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==1))
nre=10;
else
nre=12;
for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
dl_ch0_128 = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch1_128 = (__m128i *)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
for (rb=0; rb<nb_rb; rb++) {
dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[0]);
dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[0]);
prec2A_TM3_128(&dl_ch0_128_tmp,&dl_ch1_128_tmp);
// mmtmpD0 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[1]);
dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[1]);
prec2A_TM3_128(&dl_ch0_128_tmp,&dl_ch1_128_tmp);
// mmtmpD1 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0)) {
dl_ch0_128+=2;
dl_ch1_128+=2;
} else {
dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[2]);
dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[2]);
prec2A_TM3_128(&dl_ch0_128_tmp,&dl_ch1_128_tmp);
// mmtmpD2 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
dl_ch0_128+=3;
dl_ch1_128+=3;
}
}
avg[aarx] = (((int*)&avg128D)[0])/(nb_rb*nre) +
(((int*)&avg128D)[1])/(nb_rb*nre) +
(((int*)&avg128D)[2])/(nb_rb*nre) +
(((int*)&avg128D)[3])/(nb_rb*nre);
}
// choose maximum of the 2 effective channels
avg[0] = cmax(avg[0],avg[1]);
_mm_empty();
_m_empty();
#elif defined(__arm__)
#endif
}
//compute average channel_level of effective (precoded) channel
void dlsch_channel_level_TM56(int **dl_ch_estimates_ext,
LTE_DL_FRAME_PARMS *frame_parms,
unsigned char *pmi_ext,
int *avg,
uint8_t symbol,
unsigned short nb_rb)
{
#if defined(__x86_64__)||defined(__i386__)
short rb;
unsigned char aarx,nre=12,symbol_mod;
__m128i *dl_ch0_128,*dl_ch1_128, dl_ch0_128_tmp, dl_ch1_128_tmp,avg128D;
symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
//clear average level
avg128D = _mm_setzero_si128();
avg[0] = 0;
avg[1] = 0;
// 5 is always a symbol with no pilots for both normal and extended prefix
if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0))
nre=8;
else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==1))
nre=10;
else
nre=12;
for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
dl_ch0_128 = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
dl_ch1_128 = (__m128i *)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
for (rb=0; rb<nb_rb; rb++) {
dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[0]);
dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[0]);
prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
// mmtmpD0 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[1]);
dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[1]);
prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
// mmtmpD1 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0)) {
dl_ch0_128+=2;
dl_ch1_128+=2;
} else {
dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[2]);
dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[2]);
prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
// mmtmpD2 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
dl_ch0_128+=3;
dl_ch1_128+=3;
}
}
avg[aarx] = (((int*)&avg128D)[0])/(nb_rb*nre) +
(((int*)&avg128D)[1])/(nb_rb*nre) +
(((int*)&avg128D)[2])/(nb_rb*nre) +
(((int*)&avg128D)[3])/(nb_rb*nre);
}
// choose maximum of the 2 effective channels
avg[0] = cmax(avg[0],avg[1]);
_mm_empty();
_m_empty();
#elif defined(__arm__)
#endif
}
//compute average channel_level for TM7
void dlsch_channel_level_TM7(int **dl_bf_ch_estimates_ext,
LTE_DL_FRAME_PARMS *frame_parms,
int *avg,
uint8_t symbol,
unsigned short nb_rb)
{
#if defined(__x86_64__)||defined(__i386__)
short rb;
unsigned char aatx,aarx,nre=12,symbol_mod;
__m128i *dl_ch128,avg128D;
symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++)
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_bf_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 = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[0],dl_ch128[0]));
avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[1],dl_ch128[1]));
if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0)) {
dl_ch128+=2;
} else {
avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[2],dl_ch128[2]));
dl_ch128+=3;
}
/*
if (rb==0) {
print_shorts("dl_ch128",&dl_ch128[0]);
print_shorts("dl_ch128",&dl_ch128[1]);
print_shorts("dl_ch128",&dl_ch128[2]);
}
*/
}
if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1))))
nre=10;
else if ((frame_parms->Ncp==0) && (symbol==3 || symbol==6 || symbol==9 || symbol==12))
nre=9;
else if ((frame_parms->Ncp==1) && (symbol==4 || symbol==7 || symbol==9))
nre=8;
else
nre=12;
avg[(aatx<<1)+aarx] = (((int*)&avg128D)[0] +
((int*)&avg128D)[1] +
((int*)&avg128D)[2] +
((int*)&avg128D)[3])/(nb_rb*nre);
// printf("Channel level : %d\n",avg[(aatx<<1)+aarx]);
}
_mm_empty();
_m_empty();
#elif defined(__arm__)
#endif
}
void dlsch_alamouti(LTE_DL_FRAME_PARMS *frame_parms,
int **rxdataF_comp,
int **dl_ch_mag,
int **dl_ch_magb,
unsigned char symbol,
unsigned short nb_rb)
{
#if defined(__x86_64__)||defined(__i386__)
short *rxF0,*rxF1;
__m128i *ch_mag0,*ch_mag1,*ch_mag0b,*ch_mag1b, amp, *rxF0_128;
unsigned char rb,re;
int jj = (symbol*frame_parms->N_RB_DL*12);
uint8_t symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
uint8_t pilots = ((symbol_mod==0)||(symbol_mod==(4-frame_parms->Ncp))) ? 1 : 0;
rxF0_128 = (__m128i*) &rxdataF_comp[0][jj];
amp = _mm_set1_epi16(ONE_OVER_SQRT2_Q15);
// printf("Doing alamouti!\n");
rxF0 = (short*)&rxdataF_comp[0][jj]; //tx antenna 0 h0*y
rxF1 = (short*)&rxdataF_comp[2][jj]; //tx antenna 1 h1*y
ch_mag0 = (__m128i *)&dl_ch_mag[0][jj];
ch_mag1 = (__m128i *)&dl_ch_mag[2][jj];
ch_mag0b = (__m128i *)&dl_ch_magb[0][jj];
ch_mag1b = (__m128i *)&dl_ch_magb[2][jj];
for (rb=0; rb<nb_rb; rb++) {
for (re=0; re<((pilots==0)?12:8); re+=2) {
// Alamouti RX combining
// printf("Alamouti: symbol %d, rb %d, re %d: rxF0 (%d,%d,%d,%d), rxF1 (%d,%d,%d,%d)\n",symbol,rb,re,rxF0[0],rxF0[1],rxF0[2],rxF0[3],rxF1[0],rxF1[1],rxF1[2],rxF1[3]);
rxF0[0] = rxF0[0] + rxF1[2];
rxF0[1] = rxF0[1] - rxF1[3];
rxF0[2] = rxF0[2] - rxF1[0];
rxF0[3] = rxF0[3] + rxF1[1];
// printf("Alamouti: rxF0 after (%d,%d,%d,%d)\n",rxF0[0],rxF0[1],rxF0[2],rxF0[3]);
rxF0+=4;
rxF1+=4;
}
// compute levels for 16QAM or 64 QAM llr unit
ch_mag0[0] = _mm_adds_epi16(ch_mag0[0],ch_mag1[0]);
ch_mag0[1] = _mm_adds_epi16(ch_mag0[1],ch_mag1[1]);
ch_mag0b[0] = _mm_adds_epi16(ch_mag0b[0],ch_mag1b[0]);
ch_mag0b[1] = _mm_adds_epi16(ch_mag0b[1],ch_mag1b[1]);
// account for 1/sqrt(2) scaling at transmission
ch_mag0[0] = _mm_srai_epi16(ch_mag0[0],1);
ch_mag0[1] = _mm_srai_epi16(ch_mag0[1],1);
ch_mag0b[0] = _mm_srai_epi16(ch_mag0b[0],1);
ch_mag0b[1] = _mm_srai_epi16(ch_mag0b[1],1);
rxF0_128[0] = _mm_mulhi_epi16(rxF0_128[0],amp);
rxF0_128[0] = _mm_slli_epi16(rxF0_128[0],1);
rxF0_128[1] = _mm_mulhi_epi16(rxF0_128[1],amp);
rxF0_128[1] = _mm_slli_epi16(rxF0_128[1],1);
if (pilots==0) {
ch_mag0[2] = _mm_adds_epi16(ch_mag0[2],ch_mag1[2]);
ch_mag0b[2] = _mm_adds_epi16(ch_mag0b[2],ch_mag1b[2]);
ch_mag0[2] = _mm_srai_epi16(ch_mag0[2],1);
ch_mag0b[2] = _mm_srai_epi16(ch_mag0b[2],1);
rxF0_128[2] = _mm_mulhi_epi16(rxF0_128[2],amp);
rxF0_128[2] = _mm_slli_epi16(rxF0_128[2],1);
ch_mag0+=3;
ch_mag1+=3;
ch_mag0b+=3;
ch_mag1b+=3;
rxF0_128+=3;
} else {
ch_mag0+=2;
ch_mag1+=2;
ch_mag0b+=2;
ch_mag1b+=2;
rxF0_128+=2;
}
}
_mm_empty();
_m_empty();
#elif defined(__arm__)
#endif
}
//==============================================================================================
// Extraction functions
//==============================================================================================
unsigned short dlsch_extract_rbs_single(int **rxdataF,
int **dl_ch_estimates,
int **rxdataF_ext,
int **dl_ch_estimates_ext,
unsigned short pmi,
unsigned char *pmi_ext,
unsigned int *rb_alloc,
unsigned char symbol,
unsigned char subframe,
uint32_t high_speed_flag,
LTE_DL_FRAME_PARMS *frame_parms)
{
unsigned short rb,nb_rb=0;
unsigned char rb_alloc_ind;
unsigned char i,aarx,l,nsymb,skip_half=0,sss_symb,pss_symb=0;
int *dl_ch0,*dl_ch0_ext,*rxF,*rxF_ext;
unsigned char symbol_mod,pilots=0,j=0,poffset=0;
symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
pilots = ((symbol_mod==0)||(symbol_mod==(4-frame_parms->Ncp))) ? 1 : 0;
l=symbol;
nsymb = (frame_parms->Ncp==NORMAL) ? 14:12;
if (frame_parms->frame_type == TDD) { // TDD
sss_symb = nsymb-1;
pss_symb = 2;
} else {
sss_symb = (nsymb>>1)-2;
pss_symb = (nsymb>>1)-1;
}
if (symbol_mod==(4-frame_parms->Ncp))
poffset=3;
for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
if (high_speed_flag == 1)
dl_ch0 = &dl_ch_estimates[aarx][5+(symbol*(frame_parms->ofdm_symbol_size))];
else
dl_ch0 = &dl_ch_estimates[aarx][5];
dl_ch0_ext = &dl_ch_estimates_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];
rxF_ext = &rxdataF_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];
rxF = &rxdataF[aarx][(frame_parms->first_carrier_offset + (symbol*(frame_parms->ofdm_symbol_size)))];
if ((frame_parms->N_RB_DL&1) == 0) // even number of RBs
for (rb=0; rb<frame_parms->N_RB_DL; rb++) {
if (rb < 32)
rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
else if (rb < 64)
rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
else if (rb < 96)
rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
else if (rb < 100)
rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
else
rb_alloc_ind = 0;
if (rb_alloc_ind == 1)
nb_rb++;
// For second half of RBs skip DC carrier
if (rb==(frame_parms->N_RB_DL>>1)) {
rxF = &rxdataF[aarx][(1 + (symbol*(frame_parms->ofdm_symbol_size)))];
//dl_ch0++;
}
// PBCH
if ((subframe==0) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l>=nsymb>>1) && (l<((nsymb>>1) + 4))) {
rb_alloc_ind = 0;
}
//SSS
if (((subframe==0)||(subframe==5)) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==sss_symb) ) {
rb_alloc_ind = 0;
}
if (frame_parms->frame_type == FDD) {
//PSS
if (((subframe==0)||(subframe==5)) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
rb_alloc_ind = 0;
}
}
if ((frame_parms->frame_type == TDD) &&
(subframe==6)) { //TDD Subframe 6
if ((rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
rb_alloc_ind = 0;
}
}
if (rb_alloc_ind==1) {
*pmi_ext = (pmi>>((rb>>2)<<1))&3;
memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));
/*
printf("rb %d\n",rb);
for (i=0;i<12;i++)
printf("(%d %d)",((short *)dl_ch0)[i<<1],((short*)dl_ch0)[1+(i<<1)]);
printf("\n");
*/
if (pilots==0) {
for (i=0; i<12; i++) {
rxF_ext[i]=rxF[i];
/*
printf("%d : (%d,%d)\n",(rxF+i-&rxdataF[aarx][( (symbol*(frame_parms->ofdm_symbol_size)))]),
((short*)&rxF[i])[0],((short*)&rxF[i])[1]);*/
}
dl_ch0_ext+=12;
rxF_ext+=12;
} else {
j=0;
for (i=0; i<12; i++) {
if ((i!=(frame_parms->nushift+poffset)) &&
(i!=((frame_parms->nushift+poffset+6)%12))) {
rxF_ext[j]=rxF[i];
// printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
dl_ch0_ext[j++]=dl_ch0[i];
}
}
dl_ch0_ext+=10;
rxF_ext+=10;
}
}
dl_ch0+=12;
rxF+=12;
}
else { // Odd number of RBs
for (rb=0; rb<frame_parms->N_RB_DL>>1; rb++) {
#ifdef DEBUG_DLSCH_DEMOD
printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
#endif
skip_half=0;
if (rb < 32)
rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
else if (rb < 64)
rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
else if (rb < 96)
rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
else if (rb < 100)
rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
else
rb_alloc_ind = 0;
if (rb_alloc_ind == 1)
nb_rb++;
// PBCH
if ((subframe==0) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4))) {
rb_alloc_ind = 0;
}
//PBCH subframe 0, symbols nsymb>>1 ... nsymb>>1 + 3
if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
skip_half=1;
else if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
skip_half=2;
//SSS
if (((subframe==0)||(subframe==5)) &&
(rb>((frame_parms->N_RB_DL>>1)-3)) &&
(rb<((frame_parms->N_RB_DL>>1)+3)) &&
(l==sss_symb) ) {
rb_alloc_ind = 0;
}
//SSS
if (((subframe==0)||(subframe==5)) &&
(rb==((frame_parms->N_RB_DL>>1)-3)) &&
(l==sss_symb))
skip_half=1;
else if (((subframe==0)||(subframe==5)) &&
(rb==((frame_parms->N_RB_DL>>1)+3)) &&
(l==sss_symb))
skip_half=2;
//PSS in subframe 0/5 if FDD
if (frame_parms->frame_type == FDD) { //FDD
if (((subframe==0)||(subframe==5)) &&
(rb>((frame_parms->N_RB_DL>>1)-3)) &&
(rb<((frame_parms->N_RB_DL>>1)+3)) &&
(l==pss_symb) ) {
rb_alloc_ind = 0;
}
if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
skip_half=1;
else if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
skip_half=2;
}
if ((frame_parms->frame_type == TDD) &&
(subframe==6)) { //TDD Subframe 6
if ((rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
rb_alloc_ind = 0;
}
if ((rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
skip_half=1;
else if ((rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
skip_half=2;
}
if (rb_alloc_ind==1) {
#ifdef DEBUG_DLSCH_DEMOD
printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
#endif
if (pilots==0) {
// printf("Extracting w/o pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
if (skip_half==1) {
memcpy(dl_ch0_ext,dl_ch0,6*sizeof(int));
for (i=0; i<6; i++) {
rxF_ext[i]=rxF[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
dl_ch0_ext+=6;
rxF_ext+=6;
} else if (skip_half==2) {
memcpy(dl_ch0_ext,dl_ch0+6,6*sizeof(int));
for (i=0; i<6; i++) {
rxF_ext[i]=rxF[(i+6)];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
dl_ch0_ext+=6;
rxF_ext+=6;
} else {
memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));
for (i=0; i<12; i++) {
rxF_ext[i]=rxF[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
dl_ch0_ext+=12;
rxF_ext+=12;
}
} else {
// printf("Extracting with pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
j=0;
if (skip_half==1) {
for (i=0; i<6; i++) {
if (i!=((frame_parms->nushift+poffset)%6)) {
rxF_ext[j]=rxF[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
#endif
dl_ch0_ext[j++]=dl_ch0[i];
}
}
rxF_ext+=5;
dl_ch0_ext+=5;
} else if (skip_half==2) {
for (i=0; i<6; i++) {
if (i!=((frame_parms->nushift+poffset)%6)) {
rxF_ext[j]=rxF[(i+6)];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
#endif
dl_ch0_ext[j++]=dl_ch0[i+6];
}
}
dl_ch0_ext+=5;
rxF_ext+=5;
} else {
for (i=0; i<12; i++) {
if ((i!=(frame_parms->nushift+poffset)) &&
(i!=((frame_parms->nushift+poffset+6)%12))) {
rxF_ext[j]=rxF[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
#endif
dl_ch0_ext[j++]=dl_ch0[i];
}
}
dl_ch0_ext+=10;
rxF_ext+=10;
}
}
}
dl_ch0+=12;
rxF+=12;
} // first half loop
// Do middle RB (around DC)
if (rb < 32)
rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
else if (rb < 64)
rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
else if (rb < 96)
rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
else if (rb < 100)
rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
else
rb_alloc_ind = 0;
if (rb_alloc_ind == 1)
nb_rb++;
// PBCH
if ((subframe==0) &&
(l>=(nsymb>>1)) &&
(l<((nsymb>>1) + 4))) {
rb_alloc_ind = 0;
}
//SSS
if (((subframe==0)||(subframe==5)) && (l==sss_symb) ) {
rb_alloc_ind = 0;
}
if (frame_parms->frame_type == FDD) {
//PSS
if (((subframe==0)||(subframe==5)) && (l==pss_symb) ) {
rb_alloc_ind = 0;
}
}
//PSS
if ((frame_parms->frame_type == TDD) &&
(subframe==6) &&
(l==pss_symb) ) {
rb_alloc_ind = 0;
}
// printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
// printf("DC rb %d (%p)\n",rb,rxF);
if (rb_alloc_ind==1) {
#ifdef DEBUG_DLSCH_DEMOD
printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
#endif
if (pilots==0) {
for (i=0; i<6; i++) {
dl_ch0_ext[i]=dl_ch0[i];
rxF_ext[i]=rxF[i];
}
rxF = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];
for (; i<12; i++) {
dl_ch0_ext[i]=dl_ch0[i];
rxF_ext[i]=rxF[(1+i-6)];
}
dl_ch0_ext+=12;
rxF_ext+=12;
} else { // pilots==1
j=0;
for (i=0; i<6; i++) {
if (i!=((frame_parms->nushift+poffset)%6)) {
dl_ch0_ext[j]=dl_ch0[i];
rxF_ext[j++]=rxF[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("**extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j-1],*(1+(short*)&rxF_ext[j-1]));
#endif
}
}
rxF = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];
for (; i<12; i++) {
if (i!=((frame_parms->nushift+6+poffset)%12)) {
dl_ch0_ext[j]=dl_ch0[i];
rxF_ext[j++]=rxF[(1+i-6)];
#ifdef DEBUG_DLSCH_DEMOD
printf("**extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j-1],*(1+(short*)&rxF_ext[j-1]));
#endif
}
}
dl_ch0_ext+=10;
rxF_ext+=10;
} // symbol_mod==0
} // rballoc==1
else {
rxF = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];
}
dl_ch0+=12;
rxF+=7;
rb++;
for (; rb<frame_parms->N_RB_DL; rb++) {
// printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
// printf("rb %d (%p)\n",rb,rxF);
skip_half=0;
if (rb < 32)
rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
else if (rb < 64)
rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
else if (rb < 96)
rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
else if (rb < 100)
rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
else
rb_alloc_ind = 0;
if (rb_alloc_ind == 1)
nb_rb++;
// PBCH
if ((subframe==0) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l>=nsymb>>1) && (l<((nsymb>>1) + 4))) {
rb_alloc_ind = 0;
}
//PBCH subframe 0, symbols nsymb>>1 ... nsymb>>1 + 3
if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
skip_half=1;
else if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
skip_half=2;
//SSS
if (((subframe==0)||(subframe==5)) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==sss_symb) ) {
rb_alloc_ind = 0;
}
//SSS
if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l==sss_symb))
skip_half=1;
else if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l==sss_symb))
skip_half=2;
if (frame_parms->frame_type == FDD) {
//PSS
if (((subframe==0)||(subframe==5)) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
rb_alloc_ind = 0;
}
//PSS
if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
skip_half=1;
else if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
skip_half=2;
}
if ((frame_parms->frame_type == TDD) &&
(subframe==6)) { //TDD Subframe 6
if ((rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
rb_alloc_ind = 0;
}
if ((rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
skip_half=1;
else if ((rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
skip_half=2;
}
if (rb_alloc_ind==1) {
#ifdef DEBUG_DLSCH_DEMOD
printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
#endif
/*
printf("rb %d\n",rb);
for (i=0;i<12;i++)
printf("(%d %d)",((short *)dl_ch0)[i<<1],((short*)dl_ch0)[1+(i<<1)]);
printf("\n");
*/
if (pilots==0) {
// printf("Extracting w/o pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
if (skip_half==1) {
memcpy(dl_ch0_ext,dl_ch0,6*sizeof(int));
for (i=0; i<6; i++) {
rxF_ext[i]=rxF[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
dl_ch0_ext+=6;
rxF_ext+=6;
} else if (skip_half==2) {
memcpy(dl_ch0_ext,dl_ch0+6,6*sizeof(int));
for (i=0; i<6; i++) {
rxF_ext[i]=rxF[(i+6)];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
dl_ch0_ext+=6;
rxF_ext+=6;
} else {
memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));
for (i=0; i<12; i++) {
rxF_ext[i]=rxF[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
dl_ch0_ext+=12;
rxF_ext+=12;
}
} else {
// printf("Extracting with pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
j=0;
if (skip_half==1) {
for (i=0; i<6; i++) {
if (i!=((frame_parms->nushift+poffset)%6)) {
rxF_ext[j]=rxF[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
#endif
dl_ch0_ext[j++]=dl_ch0[i];
}
}
dl_ch0_ext+=5;
rxF_ext+=5;
} else if (skip_half==2) {
for (i=0; i<6; i++) {
if (i!=((frame_parms->nushift+poffset)%6)) {
rxF_ext[j]=rxF[(i+6)];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
#endif
dl_ch0_ext[j++]=dl_ch0[i+6];
}
}
dl_ch0_ext+=5;
rxF_ext+=5;
} else {
for (i=0; i<12; i++) {
if ((i!=(frame_parms->nushift+poffset)) &&
(i!=((frame_parms->nushift+poffset+6)%12))) {
rxF_ext[j]=rxF[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
#endif
dl_ch0_ext[j++]=dl_ch0[i];
}
}
dl_ch0_ext+=10;
rxF_ext+=10;
}
} // pilots=0
}
dl_ch0+=12;
rxF+=12;
}
}
}
return(nb_rb/frame_parms->nb_antennas_rx);
}
unsigned short 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 int *rb_alloc,
unsigned char symbol,
unsigned char subframe,
uint32_t high_speed_flag,
LTE_DL_FRAME_PARMS *frame_parms)
{
int prb,nb_rb=0;
int prb_off,prb_off2;
int rb_alloc_ind,skip_half=0,sss_symb,pss_symb=0,nsymb,l;
int i,aarx;
int32_t *dl_ch0,*dl_ch0p,*dl_ch0_ext,*dl_ch1,*dl_ch1p,*dl_ch1_ext,*rxF,*rxF_ext;
int symbol_mod,pilots=0,j=0;
unsigned char *pmi_loc;
symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
// printf("extract_rbs: symbol_mod %d\n",symbol_mod);
if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp)))
pilots=1;
nsymb = (frame_parms->Ncp==NORMAL) ? 14:12;
l=symbol;
if (frame_parms->frame_type == TDD) { // TDD
sss_symb = nsymb-1;
pss_symb = 2;
} else {
sss_symb = (nsymb>>1)-2;
pss_symb = (nsymb>>1)-1;
}
for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
if (high_speed_flag==1) {
dl_ch0 = &dl_ch_estimates[aarx][5+(symbol*(frame_parms->ofdm_symbol_size))];
dl_ch1 = &dl_ch_estimates[2+aarx][5+(symbol*(frame_parms->ofdm_symbol_size))];
} else {
dl_ch0 = &dl_ch_estimates[aarx][5];
dl_ch1 = &dl_ch_estimates[2+aarx][5];
}
pmi_loc = pmi_ext;
// pointers to extracted RX signals and channel estimates
rxF_ext = &rxdataF_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];
dl_ch0_ext = &dl_ch_estimates_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];
dl_ch1_ext = &dl_ch_estimates_ext[2+aarx][symbol*(frame_parms->N_RB_DL*12)];
for (prb=0; prb<frame_parms->N_RB_DL; prb++) {
skip_half=0;
if (prb < 32)
rb_alloc_ind = (rb_alloc[0]>>prb) & 1;
else if (prb < 64)
rb_alloc_ind = (rb_alloc[1]>>(prb-32)) & 1;
else if (prb < 96)
rb_alloc_ind = (rb_alloc[2]>>(prb-64)) & 1;
else if (prb < 100)
rb_alloc_ind = (rb_alloc[3]>>(prb-96)) & 1;
else
rb_alloc_ind = 0;
if (rb_alloc_ind == 1)
nb_rb++;
if ((frame_parms->N_RB_DL&1) == 0) { // even number of RBs
// PBCH
if ((subframe==0) &&
(prb>=((frame_parms->N_RB_DL>>1)-3)) &&
(prb<((frame_parms->N_RB_DL>>1)+3)) &&
(l>=(nsymb>>1)) &&
(l<((nsymb>>1) + 4))) {
rb_alloc_ind = 0;
// printf("symbol %d / rb %d: skipping PBCH REs\n",symbol,prb);
}
//SSS
if (((subframe==0)||(subframe==5)) &&
(prb>=((frame_parms->N_RB_DL>>1)-3)) &&
(prb<((frame_parms->N_RB_DL>>1)+3)) &&
(l==sss_symb) ) {
rb_alloc_ind = 0;
// printf("symbol %d / rb %d: skipping SSS REs\n",symbol,prb);
}
//PSS in subframe 0/5 if FDD
if (frame_parms->frame_type == FDD) { //FDD
if (((subframe==0)||(subframe==5)) &&
(prb>=((frame_parms->N_RB_DL>>1)-3)) &&
(prb<((frame_parms->N_RB_DL>>1)+3)) &&
(l==pss_symb) ) {
rb_alloc_ind = 0;
// printf("symbol %d / rb %d: skipping PSS REs\n",symbol,prb);
}
}
if ((frame_parms->frame_type == TDD) &&
(subframe==6)) { //TDD Subframe 6
if ((prb>=((frame_parms->N_RB_DL>>1)-3)) &&
(prb<((frame_parms->N_RB_DL>>1)+3)) &&
(l==pss_symb) ) {
rb_alloc_ind = 0;
}
}
if (rb_alloc_ind==1) { // PRB is allocated
prb_off = 12*prb;
prb_off2 = 1+(12*(prb-(frame_parms->N_RB_DL>>1)));
dl_ch0p = dl_ch0+(12*prb);
dl_ch1p = dl_ch1+(12*prb);
if (prb<(frame_parms->N_RB_DL>>1)){
rxF = &rxdataF[aarx][prb_off+
frame_parms->first_carrier_offset +
(symbol*(frame_parms->ofdm_symbol_size))];
}
else {
rxF = &rxdataF[aarx][prb_off2+
(symbol*(frame_parms->ofdm_symbol_size))];
}
*pmi_loc = (pmi>>((prb>>2)<<1))&3;
pmi_loc++;
if (pilots == 0) {
memcpy(dl_ch0_ext,dl_ch0p,12*sizeof(int));
memcpy(dl_ch1_ext,dl_ch1p,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!=frame_parms->nushift) &&
(i!=frame_parms->nushift+3) &&
(i!=frame_parms->nushift+6) &&
(i!=((frame_parms->nushift+9)%12))) {
rxF_ext[j]=rxF[i];
// printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
dl_ch0_ext[j]=dl_ch0p[i];
dl_ch1_ext[j++]=dl_ch1p[i];
}
}
dl_ch0_ext+=8;
dl_ch1_ext+=8;
rxF_ext+=8;
} // pilots==1
}
} else { // Odd number of RBs
// PBCH
if ((subframe==0) &&
(prb>((frame_parms->N_RB_DL>>1)-3)) &&
(prb<((frame_parms->N_RB_DL>>1)+3)) &&
(l>=(nsymb>>1)) &&
(l<((nsymb>>1) + 4))) {
rb_alloc_ind = 0;
// printf("symbol %d / rb %d: skipping PBCH REs\n",symbol,prb);
}
//SSS
if (((subframe==0)||(subframe==5)) &&
(prb>((frame_parms->N_RB_DL>>1)-3)) &&
(prb<((frame_parms->N_RB_DL>>1)+3)) &&
(l==sss_symb) ) {
rb_alloc_ind = 0;
// printf("symbol %d / rb %d: skipping SSS REs\n",symbol,prb);
}
//PSS in subframe 0/5 if FDD
if (frame_parms->frame_type == FDD) { //FDD
if (((subframe==0)||(subframe==5)) &&
(prb>((frame_parms->N_RB_DL>>1)-3)) &&
(prb<((frame_parms->N_RB_DL>>1)+3)) &&
(l==pss_symb) ) {
rb_alloc_ind = 0;
// printf("symbol %d / rb %d: skipping PSS REs\n",symbol,prb);
}
}
if ((frame_parms->frame_type == TDD) &&
((subframe==1) || (subframe==6))) { //TDD Subframe 1-6
if ((prb>((frame_parms->N_RB_DL>>1)-3)) &&
(prb<((frame_parms->N_RB_DL>>1)+3)) &&
(l==pss_symb) ) {
rb_alloc_ind = 0;
}
}
if (rb_alloc_ind == 1) {
skip_half=0;
//Check if we have to drop half a PRB due to PSS/SSS/PBCH
// skip_half == 0 means full PRB
// skip_half == 1 means first half is used (leftmost half-PRB from PSS/SSS/PBCH)
// skip_half == 2 means second half is used (rightmost half-PRB from PSS/SSS/PBCH)
//PBCH subframe 0, symbols nsymb>>1 ... nsymb>>1 + 3
if ((subframe==0) &&
(prb==((frame_parms->N_RB_DL>>1)-3)) &&
(l>=(nsymb>>1)) &&
(l<((nsymb>>1) + 4)))
skip_half=1;
else if ((subframe==0) &&
(prb==((frame_parms->N_RB_DL>>1)+3)) &&
(l>=(nsymb>>1)) &&
(l<((nsymb>>1) + 4)))
skip_half=2;
//SSS
if (((subframe==0)||(subframe==5)) &&
(prb==((frame_parms->N_RB_DL>>1)-3)) &&
(l==sss_symb))
skip_half=1;
else if (((subframe==0)||(subframe==5)) &&
(prb==((frame_parms->N_RB_DL>>1)+3)) &&
(l==sss_symb))
skip_half=2;
//PSS Subframe 0,5
if (((frame_parms->frame_type == FDD) &&
(((subframe==0)||(subframe==5)))) || //FDD Subframes 0,5
((frame_parms->frame_type == TDD) &&
(((subframe==1) || (subframe==6))))) { //TDD Subframes 1,6
if ((prb==((frame_parms->N_RB_DL>>1)-3)) &&
(l==pss_symb))
skip_half=1;
else if ((prb==((frame_parms->N_RB_DL>>1)+3)) &&
(l==pss_symb))
skip_half=2;
}
prb_off = 12*prb;
prb_off2 = 7+(12*(prb-(frame_parms->N_RB_DL>>1)-1));
dl_ch0p = dl_ch0+(12*prb);
dl_ch1p = dl_ch1+(12*prb);
if (prb<=(frame_parms->N_RB_DL>>1)){
rxF = &rxdataF[aarx][prb_off+
frame_parms->first_carrier_offset +
(symbol*(frame_parms->ofdm_symbol_size))];
}
else {
rxF = &rxdataF[aarx][prb_off2+
(symbol*(frame_parms->ofdm_symbol_size))];
}
#ifdef DEBUG_DLSCH_DEMOD
printf("symbol %d / rb %d: alloc %d skip_half %d (rxF %p, rxF_ext %p) prb_off (%d,%d)\n",symbol,prb,rb_alloc_ind,skip_half,rxF,rxF_ext,prb_off,prb_off2);
#endif
*pmi_loc = (pmi>>((prb>>2)<<1))&3;
// printf("symbol_mod %d (pilots %d) rb %d, sb %d, pmi %d (pmi_loc %p,rxF %p, ch00 %p, ch01 %p, rxF_ext %p dl_ch0_ext %p dl_ch1_ext %p)\n",symbol_mod,pilots,rb,rb>>2,*pmi_loc,pmi_loc,rxF,dl_ch0, dl_ch1, rxF_ext,dl_ch0_ext,dl_ch1_ext);
pmi_loc++;
if (prb != (frame_parms->N_RB_DL>>1)) { // This PRB is not around DC
if (pilots==0) {
if (skip_half==1) {
memcpy(dl_ch0_ext,dl_ch0p,6*sizeof(int32_t));
memcpy(dl_ch1_ext,dl_ch1p,6*sizeof(int32_t));
memcpy(rxF_ext,rxF,6*sizeof(int32_t));
#ifdef DEBUG_DLSCH_DEMOD
for (i=0;i<6;i++)
printf("extract rb %d, re %d => (%d,%d)\n",prb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
dl_ch0_ext+=6;
dl_ch1_ext+=6;
rxF_ext+=6;
} else if (skip_half==2) {
memcpy(dl_ch0_ext,dl_ch0p+6,6*sizeof(int32_t));
memcpy(dl_ch1_ext,dl_ch1p+6,6*sizeof(int32_t));
memcpy(rxF_ext,rxF+6,6*sizeof(int32_t));
#ifdef DEBUG_DLSCH_DEMOD
for (i=0;i<6;i++)
printf("extract rb %d, re %d => (%d,%d)\n",prb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
dl_ch0_ext+=6;
dl_ch1_ext+=6;
rxF_ext+=6;
} else { // skip_half==0
memcpy(dl_ch0_ext,dl_ch0p,12*sizeof(int32_t));
memcpy(dl_ch1_ext,dl_ch1p,12*sizeof(int32_t));
memcpy(rxF_ext,rxF,12*sizeof(int32_t));
#ifdef DEBUG_DLSCH_DEMOD
for (i=0;i<12;i++)
printf("extract rb %d, re %d => (%d,%d)\n",prb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
dl_ch0_ext+=12;
dl_ch1_ext+=12;
rxF_ext+=12;
}
} else { // pilots=1
j=0;
if (skip_half==1) {
for (i=0; i<6; i++) {
if ((i!=frame_parms->nushift) &&
(i!=((frame_parms->nushift+3)%6))) {
rxF_ext[j]=rxF[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("(pilots,skip1)extract rb %d, re %d (%d)=> (%d,%d)\n",prb,i,j,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
#endif
dl_ch0_ext[j]=dl_ch0p[i];
dl_ch1_ext[j++]=dl_ch1p[i];
}
}
dl_ch0_ext+=4;
dl_ch1_ext+=4;
rxF_ext+=4;
} else if (skip_half==2) {
for (i=0; i<6; i++) {
if ((i!=frame_parms->nushift) &&
(i!=((frame_parms->nushift+3)%6))) {
rxF_ext[j]=rxF[(i+6)];
#ifdef DEBUG_DLSCH_DEMOD
printf("(pilots,skip2)extract rb %d, re %d (%d) => (%d,%d)\n",prb,i,j,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
#endif
dl_ch0_ext[j]=dl_ch0p[i+6];
dl_ch1_ext[j++]=dl_ch1p[i+6];
}
}
dl_ch0_ext+=4;
dl_ch1_ext+=4;
rxF_ext+=4;
} else { //skip_half==0
for (i=0; i<12; i++) {
if ((i!=frame_parms->nushift) &&
(i!=frame_parms->nushift+3) &&
(i!=frame_parms->nushift+6) &&
(i!=((frame_parms->nushift+9)%12))) {
rxF_ext[j]=rxF[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("(pilots)extract rb %d, re %d => (%d,%d)\n",prb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
#endif
dl_ch0_ext[j] =dl_ch0p[i];
dl_ch1_ext[j++]=dl_ch1p[i];
}
}
dl_ch0_ext+=8;
dl_ch1_ext+=8;
rxF_ext+=8;
} //skip_half==0
} //pilots==1
} else { // Do middle RB (around DC)
if (pilots==0) {
memcpy(dl_ch0_ext,dl_ch0p,6*sizeof(int32_t));
memcpy(dl_ch1_ext,dl_ch1p,6*sizeof(int32_t));
memcpy(rxF_ext,rxF,6*sizeof(int32_t));
#ifdef DEBUG_DLSCH_DEMOD
for (i=0; i<6; i++) {
printf("extract rb %d, re %d => (%d,%d)\n",prb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
}
#endif
rxF_ext+=6;
dl_ch0_ext+=6;
dl_ch1_ext+=6;
dl_ch0p+=6;
dl_ch1p+=6;
rxF = &rxdataF[aarx][1+((symbol*(frame_parms->ofdm_symbol_size)))];
memcpy(dl_ch0_ext,dl_ch0p,6*sizeof(int32_t));
memcpy(dl_ch1_ext,dl_ch1p,6*sizeof(int32_t));
memcpy(rxF_ext,rxF,6*sizeof(int32_t));
#ifdef DEBUG_DLSCH_DEMOD
for (i=0; i<6; i++) {
printf("extract rb %d, re %d => (%d,%d)\n",prb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
}
#endif
rxF_ext+=6;
dl_ch0_ext+=6;
dl_ch1_ext+=6;
} else { // pilots==1
j=0;
for (i=0; i<6; i++) {
if ((i!=frame_parms->nushift) &&
(i!=((frame_parms->nushift+3)%6))) {
dl_ch0_ext[j]=dl_ch0p[i];
dl_ch1_ext[j]=dl_ch1p[i];
rxF_ext[j++]=rxF[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("(pilots)extract rb %d, re %d (%d) => (%d,%d)\n",prb,i,j,*(short *)&rxF[i],*(1+(short*)&rxF[i]));
#endif
}
}
rxF = &rxdataF[aarx][1+symbol*(frame_parms->ofdm_symbol_size)];
for (; i<12; i++) {
if ((i!=((frame_parms->nushift+6)%12)) &&
(i!=((frame_parms->nushift+9)%12))) {
dl_ch0_ext[j]=dl_ch0p[i];
dl_ch1_ext[j]=dl_ch1p[i];
rxF_ext[j++]=rxF[i-6];
#ifdef DEBUG_DLSCH_DEMOD
printf("(pilots)extract rb %d, re %d (%d) => (%d,%d)\n",prb,i,j,*(short *)&rxF[1+i-6],*(1+(short*)&rxF[1+i-6]));
#endif
}
}
dl_ch0_ext+=8;
dl_ch1_ext+=8;
rxF_ext+=8;
} //pilots==1
} // if Middle PRB
} // if odd PRB
} // if rballoc==1
} // for prb
} // for aarx
return(nb_rb/frame_parms->nb_antennas_rx);
}
unsigned short dlsch_extract_rbs_TM7(int **rxdataF,
int **dl_bf_ch_estimates,
int **rxdataF_ext,
int **dl_bf_ch_estimates_ext,
unsigned int *rb_alloc,
unsigned char symbol,
unsigned char subframe,
uint32_t high_speed_flag,
LTE_DL_FRAME_PARMS *frame_parms)
{
unsigned short rb,nb_rb=0;
unsigned char rb_alloc_ind;
unsigned char i,aarx,l,nsymb,skip_half=0,sss_symb,pss_symb=0;
int *dl_ch0,*dl_ch0_ext,*rxF,*rxF_ext;
unsigned char symbol_mod,pilots=0,uespec_pilots=0,j=0,poffset=0,uespec_poffset=0;
int8_t uespec_nushift = frame_parms->Nid_cell%3;
symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
pilots = ((symbol_mod==0)||(symbol_mod==(4-frame_parms->Ncp))) ? 1 : 0;
l=symbol;
nsymb = (frame_parms->Ncp==NORMAL) ? 14:12;
if (frame_parms->Ncp==0){
if (symbol==3 || symbol==6 || symbol==9 || symbol==12)
uespec_pilots = 1;
} else{
if (symbol==4 || symbol==7 || symbol==10)
uespec_pilots = 1;
}
if (frame_parms->frame_type == TDD) {// TDD
sss_symb = nsymb-1;
pss_symb = 2;
} else {
sss_symb = (nsymb>>1)-2;
pss_symb = (nsymb>>1)-1;
}
if (symbol_mod==(4-frame_parms->Ncp))
poffset=3;
if ((frame_parms->Ncp==0 && (symbol==6 ||symbol ==12)) || (frame_parms->Ncp==1 && symbol==7))
uespec_poffset=2;
for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
if (high_speed_flag == 1)
dl_ch0 = &dl_bf_ch_estimates[aarx][symbol*(frame_parms->ofdm_symbol_size)];
else
dl_ch0 = &dl_bf_ch_estimates[aarx][0];
dl_ch0_ext = &dl_bf_ch_estimates_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];
rxF_ext = &rxdataF_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];
rxF = &rxdataF[aarx][(frame_parms->first_carrier_offset + (symbol*(frame_parms->ofdm_symbol_size)))];
if ((frame_parms->N_RB_DL&1) == 0) // even number of RBs
for (rb=0; rb<frame_parms->N_RB_DL; rb++) {
if (rb < 32)
rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
else if (rb < 64)
rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
else if (rb < 96)
rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
else if (rb < 100)
rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
else
rb_alloc_ind = 0;
if (rb_alloc_ind == 1)
nb_rb++;
// For second half of RBs skip DC carrier
if (rb==(frame_parms->N_RB_DL>>1)) {
rxF = &rxdataF[aarx][(1 + (symbol*(frame_parms->ofdm_symbol_size)))];
//dl_ch0++;
}
// PBCH
if ((subframe==0) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l>=nsymb>>1) && (l<((nsymb>>1) + 4))) {
rb_alloc_ind = 0;
}
//SSS
if (((subframe==0)||(subframe==5)) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==sss_symb) ) {
rb_alloc_ind = 0;
}
if (frame_parms->frame_type == FDD) {
//PSS
if (((subframe==0)||(subframe==5)) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
rb_alloc_ind = 0;
}
}
if ((frame_parms->frame_type == TDD) &&
(subframe==6)) { //TDD Subframe 6
if ((rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
rb_alloc_ind = 0;
}
}
if (rb_alloc_ind==1) {
/*
printf("rb %d\n",rb);
for (i=0;i<12;i++)
printf("(%d %d)",((short *)dl_ch0)[i<<1],((short*)dl_ch0)[1+(i<<1)]);
printf("\n");
*/
if (pilots==0 && uespec_pilots==0) {
memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));
for (i=0; i<12; i++) {
rxF_ext[i]=rxF[i];
}
dl_ch0_ext+=12;
rxF_ext+=12;
} else if(pilots==1 && uespec_pilots==0) {
j=0;
for (i=0; i<12; i++) {
if ((i!=(frame_parms->nushift+poffset)) &&
(i!=((frame_parms->nushift+poffset+6)%12))) {
rxF_ext[j]=rxF[i];
dl_ch0_ext[j++]=dl_ch0[i];
}
}
dl_ch0_ext+=10;
rxF_ext+=10;
} else if (pilots==0 && uespec_pilots==1) {
j=0;
for (i=0; i<12; i++){
if (frame_parms->Ncp==0){
if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
rxF_ext[j] = rxF[i];
dl_ch0_ext[j++]=dl_ch0[i];
}
} else{
if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
rxF_ext[j] = rxF[i];
dl_ch0_ext[j++]=dl_ch0[i];
}
}
}
dl_ch0_ext+=9-frame_parms->Ncp;
rxF_ext+=9-frame_parms->Ncp;
} else {
msg("dlsch_extract_rbs_TM7(dl_demodulation.c):pilot or ue spec pilot detection error\n");
exit(-1);
}
}
dl_ch0+=12;
rxF+=12;
}
else { // Odd number of RBs
for (rb=0; rb<frame_parms->N_RB_DL>>1; rb++) {
skip_half=0;
if (rb < 32)
rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
else if (rb < 64)
rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
else if (rb < 96)
rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
else if (rb < 100)
rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
else
rb_alloc_ind = 0;
if (rb_alloc_ind == 1)
nb_rb++;
// PBCH
if ((subframe==0) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4))) {
rb_alloc_ind = 0;
}
//PBCH subframe 0, symbols nsymb>>1 ... nsymb>>1 + 3
if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
skip_half=1;
else if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
skip_half=2;
//SSS
if (((subframe==0)||(subframe==5)) &&
(rb>((frame_parms->N_RB_DL>>1)-3)) &&
(rb<((frame_parms->N_RB_DL>>1)+3)) &&
(l==sss_symb) ) {
rb_alloc_ind = 0;
}
//SSS
if (((subframe==0)||(subframe==5)) &&
(rb==((frame_parms->N_RB_DL>>1)-3)) &&
(l==sss_symb))
skip_half=1;
else if (((subframe==0)||(subframe==5)) &&
(rb==((frame_parms->N_RB_DL>>1)+3)) &&
(l==sss_symb))
skip_half=2;
//PSS in subframe 0/5 if FDD
if (frame_parms->frame_type == FDD) { //FDD
if (((subframe==0)||(subframe==5)) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
rb_alloc_ind = 0;
}
if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
skip_half=1;
else if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
skip_half=2;
}
if ((frame_parms->frame_type == TDD) && ((subframe==1)||(subframe==6))) { //TDD Subframe 1 and 6
if ((rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
rb_alloc_ind = 0;
}
if ((rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
skip_half=1;
else if ((rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
skip_half=2;
}
if (rb_alloc_ind==1) {
#ifdef DEBUG_DLSCH_DEMOD
printf("rb %d/symbol %d pilots %d, uespec_pilots %d, (skip_half %d)\n",rb,l,pilots,uespec_pilots,skip_half);
#endif
if (pilots==0 && uespec_pilots==0) {
//printf("Extracting w/o pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
if (skip_half==1) {
memcpy(dl_ch0_ext,dl_ch0,6*sizeof(int));
for (i=0; i<6; i++) {
rxF_ext[i]=rxF[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
dl_ch0_ext+=6;
rxF_ext+=6;
} else if (skip_half==2) {
memcpy(dl_ch0_ext,dl_ch0+6,6*sizeof(int));
for (i=0; i<6; i++) {
rxF_ext[i]=rxF[(i+6)];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
dl_ch0_ext+=6;
rxF_ext+=6;
} else {
memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));
for (i=0; i<12; i++){
rxF_ext[i]=rxF[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",symbol,rb,i,*(short *)&rxF[i],*(1+(short*)&rxF[i]));
#endif
}
dl_ch0_ext+=12;
rxF_ext+=12;
}
} else if (pilots==1 && uespec_pilots==0) {
// printf("Extracting with pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
j=0;
if (skip_half==1) {
for (i=0; i<6; i++) {
if (i!=((frame_parms->nushift+poffset)%6)) {
rxF_ext[j]=rxF[i];
dl_ch0_ext[j++]=dl_ch0[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
}
dl_ch0_ext+=5;
rxF_ext+=5;
} else if (skip_half==2) {
for (i=0; i<6; i++) {
if (i!=((frame_parms->nushift+poffset)%6)) {
rxF_ext[j]=rxF[(i+6)];
dl_ch0_ext[j++]=dl_ch0[i+6];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
}
dl_ch0_ext+=5;
rxF_ext+=5;
} else {
for (i=0; i<12; i++) {
if ((i!=(frame_parms->nushift+poffset)) &&
(i!=((frame_parms->nushift+poffset+6)%12))) {
rxF_ext[j]=rxF[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
#endif
dl_ch0_ext[j++]=dl_ch0[i];
}
}
dl_ch0_ext+=10;
rxF_ext+=10;
}
} else if(pilots==0 && uespec_pilots==1){
//printf("Extracting with uespec pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
j=0;
if (skip_half==1) {
if (frame_parms->Ncp==0){
for (i=0; i<6; i++) {
if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
rxF_ext[j]=rxF[i];
dl_ch0_ext[j++]=dl_ch0[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
}
dl_ch0_ext+=6-(uespec_nushift+uespec_poffset<6)-(uespec_nushift+uespec_poffset+4<6)-((uespec_nushift+uespec_poffset+8)%12<6);
rxF_ext+=6-(uespec_nushift+uespec_poffset<6)-(uespec_nushift+uespec_poffset+4<6)-((uespec_nushift+uespec_poffset+8)%12<6);
} else{
for (i=0; i<6; i++) {
if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
rxF_ext[j]=rxF[i];
dl_ch0_ext[j++]=dl_ch0[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
}
dl_ch0_ext+=4;
rxF_ext+=4;
}
} else if (skip_half==2) {
if(frame_parms->Ncp==0){
for (i=0; i<6; i++) {
if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
rxF_ext[j]=rxF[(i+6)];
dl_ch0_ext[j++]=dl_ch0[i+6];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
}
dl_ch0_ext+=6-(uespec_nushift+uespec_poffset>6)-(uespec_nushift+uespec_poffset+4>6)-((uespec_nushift+uespec_poffset+8)%12>6);
rxF_ext+=6-(uespec_nushift+uespec_poffset>6)-(uespec_nushift+uespec_poffset+4>6)-((uespec_nushift+uespec_poffset+8)%12>6);
} else {
for (i=0; i<6; i++) {
if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
rxF_ext[j]=rxF[(i+6)];
dl_ch0_ext[j++]=dl_ch0[i+6];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
}
dl_ch0_ext+=4;
rxF_ext+=4;
}
} else {
for (i=0; i<12; i++){
if (frame_parms->Ncp==0){
if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
rxF_ext[j] = rxF[i];
dl_ch0_ext[j++] = dl_ch0[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d, j %d => (%d,%d)\n",symbol,rb,i,j-1,*(short *)&dl_ch0[j],*(1+(short*)&dl_ch0[i]));
#endif
}
} else{
if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
rxF_ext[j] = rxF[i];
dl_ch0_ext[j++]=dl_ch0[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
}
}
dl_ch0_ext+=9-frame_parms->Ncp;
rxF_ext+=9-frame_parms->Ncp;
}
} else {
msg("dlsch_extract_rbs_TM7(dl_demodulation.c):pilot or ue spec pilot detection error\n");
exit(-1);
}
}
dl_ch0+=12;
rxF+=12;
} // first half loop
// Do middle RB (around DC)
if (rb < 32)
rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
else if (rb < 64)
rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
else if (rb < 96)
rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
else if (rb < 100)
rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
else
rb_alloc_ind = 0;
if (rb_alloc_ind == 1)
nb_rb++;
// PBCH
if ((subframe==0) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4))) {
rb_alloc_ind = 0;
}
//SSS
if (((subframe==0)||(subframe==5)) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==sss_symb) ) {
rb_alloc_ind = 0;
}
if (frame_parms->frame_type == FDD) {
//PSS
if (((subframe==0)||(subframe==5)) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
rb_alloc_ind = 0;
}
}
if ((frame_parms->frame_type == TDD) && ((subframe==1)||(subframe==6))) {
//PSS
if ((rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
rb_alloc_ind = 0;
}
}
//printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
//printf("DC rb %d (%p)\n",rb,rxF);
if (rb_alloc_ind==1) {
//printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
if (pilots==0 && uespec_pilots==0) {
for (i=0; i<6; i++) {
dl_ch0_ext[i]=dl_ch0[i];
rxF_ext[i]=rxF[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
rxF = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];
for (; i<12; i++) {
dl_ch0_ext[i]=dl_ch0[i];
rxF_ext[i]=rxF[(1+i-6)];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
dl_ch0_ext+=12;
rxF_ext+=12;
} else if(pilots==1 && uespec_pilots==0){ // pilots==1
j=0;
for (i=0; i<6; i++) {
if (i!=((frame_parms->nushift+poffset)%6)) {
dl_ch0_ext[j]=dl_ch0[i];
rxF_ext[j++]=rxF[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
}
rxF = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];
for (; i<12; i++) {
if (i!=((frame_parms->nushift+6+poffset)%12)) {
dl_ch0_ext[j]=dl_ch0[i];
rxF_ext[j++]=rxF[(1+i-6)];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
}
dl_ch0_ext+=10;
rxF_ext+=10;
} else if(pilots==0 && uespec_pilots==1) {
j=0;
for (i=0; i<6; i++) {
if (frame_parms->Ncp==0){
if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
dl_ch0_ext[j]=dl_ch0[i];
rxF_ext[j++] = rxF[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
} else {
if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
dl_ch0_ext[j]=dl_ch0[i];
rxF_ext[j++] = rxF[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
}
}
rxF = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];
for (; i<12; i++) {
if (frame_parms->Ncp==0){
if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
dl_ch0_ext[j]=dl_ch0[i];
rxF_ext[j++]=rxF[(1+i-6)];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
} else {
if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
dl_ch0_ext[j]=dl_ch0[i];
rxF_ext[j++] = rxF[(1+i-6)];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
}
}
dl_ch0_ext+=9-frame_parms->Ncp;
rxF_ext+=9-frame_parms->Ncp;
}// symbol_mod==0
} // rballoc==1
else {
rxF = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];
}
dl_ch0+=12;
rxF+=7;
rb++;
for (; rb<frame_parms->N_RB_DL; rb++) {
// printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
// printf("rb %d (%p)\n",rb,rxF);
skip_half=0;
if (rb < 32)
rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
else if (rb < 64)
rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
else if (rb < 96)
rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
else if (rb < 100)
rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
else
rb_alloc_ind = 0;
if (rb_alloc_ind==1)
nb_rb++;
// PBCH
if ((subframe==0) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l>=nsymb>>1) && (l<((nsymb>>1) + 4))) {
rb_alloc_ind = 0;
}
//PBCH subframe 0, symbols nsymb>>1 ... nsymb>>1 + 3
if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
skip_half=1;
else if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
skip_half=2;
//SSS
if (((subframe==0)||(subframe==5)) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==sss_symb) ) {
rb_alloc_ind = 0;
}
//SSS
if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l==sss_symb))
skip_half=1;
else if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l==sss_symb))
skip_half=2;
//PSS
if (frame_parms->frame_type == FDD) {
if (((subframe==0)||(subframe==5)) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
rb_alloc_ind = 0;
}
if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
skip_half=1;
else if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
skip_half=2;
}
if ((frame_parms->frame_type == TDD) && ((subframe==1)||(subframe==6))) { //TDD Subframe 1 and 6
if ((rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
rb_alloc_ind = 0;
}
if ((rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
skip_half=1;
else if ((rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
skip_half=2;
}
if (rb_alloc_ind==1) {
#ifdef DEBUG_DLSCH_DEMOD
printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
#endif
/*
printf("rb %d\n",rb);
for (i=0;i<12;i++)
printf("(%d %d)",((short *)dl_ch0)[i<<1],((short*)dl_ch0)[1+(i<<1)]);
printf("\n");
*/
if (pilots==0 && uespec_pilots==0) {
//printf("Extracting w/o pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
if (skip_half==1) {
memcpy(dl_ch0_ext,dl_ch0,6*sizeof(int));
for (i=0; i<6; i++) {
rxF_ext[i]=rxF[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
dl_ch0_ext+=6;
rxF_ext+=6;
} else if (skip_half==2) {
memcpy(dl_ch0_ext,dl_ch0+6,6*sizeof(int));
for (i=0; i<6; i++) {
rxF_ext[i]=rxF[i+6];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
dl_ch0_ext+=6;
rxF_ext+=6;
} else {
memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));
//printf("symbol %d, extract rb %d, => (%d,%d)\n",symbol,rb,*(short *)&dl_ch0[j],*(1+(short*)&dl_ch0[i]));
for (i=0; i<12; i++) {
rxF_ext[i]=rxF[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
dl_ch0_ext+=12;
rxF_ext+=12;
}
} else if (pilots==1 && uespec_pilots==0){
//printf("Extracting with pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
j=0;
if (skip_half==1) {
for (i=0; i<6; i++) {
if (i!=((frame_parms->nushift+poffset)%6)) {
rxF_ext[j]=rxF[i];
dl_ch0_ext[j++]=dl_ch0[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
}
dl_ch0_ext+=5;
rxF_ext+=5;
} else if (skip_half==2) {
for (i=0; i<6; i++) {
if (i!=((frame_parms->nushift+poffset)%6)) {
rxF_ext[j]=rxF[(i+6)];
dl_ch0_ext[j++]=dl_ch0[i+6];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
}
dl_ch0_ext+=5;
rxF_ext+=5;
} else {
for (i=0; i<12; i++) {
if ((i!=(frame_parms->nushift+poffset)) &&
(i!=((frame_parms->nushift+poffset+6)%12))) {
rxF_ext[j]=rxF[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
#endif
dl_ch0_ext[j++]=dl_ch0[i];
}
}
dl_ch0_ext+=10;
rxF_ext+=10;
}
} else if(pilots==0 && uespec_pilots==1) {
j=0;
if (skip_half==1) {
if (frame_parms->Ncp==0){
for (i=0; i<6; i++) {
if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
rxF_ext[j]=rxF[i];
dl_ch0_ext[j++]=dl_ch0[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
}
dl_ch0_ext+=6-(uespec_nushift+uespec_poffset<6)-(uespec_nushift+uespec_poffset+4<6)-((uespec_nushift+uespec_poffset+8)%12<6);
rxF_ext+=6-(uespec_nushift+uespec_poffset<6)-(uespec_nushift+uespec_poffset+4<6)-((uespec_nushift+uespec_poffset+8)%12<6);
} else{
for (i=0; i<6; i++) {
if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
rxF_ext[j]=rxF[i];
dl_ch0_ext[j++]=dl_ch0[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
}
dl_ch0_ext+=4;
rxF_ext+=4;
}
} else if (skip_half==2) {
if(frame_parms->Ncp==0){
for (i=0; i<6; i++) {
if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
rxF_ext[j]=rxF[i+6];
dl_ch0_ext[j++]=dl_ch0[i+6];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
}
dl_ch0_ext+=6-(uespec_nushift+uespec_poffset>6)-(uespec_nushift+uespec_poffset+4>6)-((uespec_nushift+uespec_poffset+8)%12>6);
rxF_ext+=6-(uespec_nushift+uespec_poffset>6)-(uespec_nushift+uespec_poffset+4>6)-((uespec_nushift+uespec_poffset+8)%12>6);
} else {
for (i=0; i<6; i++) {
if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
rxF_ext[j]=rxF[(i+6)];
dl_ch0_ext[j++]=dl_ch0[i+6];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
}
dl_ch0_ext+=4;
rxF_ext+=4;
}
} else {
for (i=0; i<12; i++){
if (frame_parms->Ncp==0){
if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
rxF_ext[j] = rxF[i];
dl_ch0_ext[j++]=dl_ch0[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
} else{
if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
rxF_ext[j] = rxF[i];
dl_ch0_ext[j++]=dl_ch0[i];
#ifdef DEBUG_DLSCH_DEMOD
printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
}
}
}
dl_ch0_ext+=9-frame_parms->Ncp;
rxF_ext+=9-frame_parms->Ncp;
}
}// pilots=0
}
dl_ch0+=12;
rxF+=12;
}
}
}
_mm_empty();
_m_empty();
return(nb_rb/frame_parms->nb_antennas_rx);
}
//==============================================================================================
#ifdef USER_MODE
void dump_dlsch2(PHY_VARS_UE *ue,uint8_t eNB_id,uint16_t coded_bits_per_codeword,int round)
{
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;
sprintf(fname,"dlsch%d_rxF_r%d_ext0.m",eNB_id,round);
sprintf(vname,"dl%d_rxF_r%d_ext0",eNB_id,round);
write_output(fname,vname,ue->pdsch_vars[eNB_id]->rxdataF_ext[0],12*N_RB_DL*nsymb,1,1);
if (ue->frame_parms.nb_antennas_rx >1) {
sprintf(fname,"dlsch%d_rxF_r%d_ext1.m",eNB_id,round);
sprintf(vname,"dl%d_rxF_r%d_ext1",eNB_id,round);
write_output(fname,vname,ue->pdsch_vars[eNB_id]->rxdataF_ext[1],12*N_RB_DL*nsymb,1,1);
}
sprintf(fname,"dlsch%d_ch_r%d_ext00.m",eNB_id,round);
sprintf(vname,"dl%d_ch_r%d_ext00",eNB_id,round);
write_output(fname,vname,ue->pdsch_vars[eNB_id]->dl_ch_estimates_ext[0],12*N_RB_DL*nsymb,1,1);
if (ue->transmission_mode[eNB_id]==7){
sprintf(fname,"dlsch%d_bf_ch_r%d.m",eNB_id,round);
sprintf(vname,"dl%d_bf_ch_r%d",eNB_id,round);
write_output(fname,vname,ue->pdsch_vars[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);
sprintf(fname,"dlsch%d_bf_ch_r%d_ext00.m",eNB_id,round);
sprintf(vname,"dl%d_bf_ch_r%d_ext00",eNB_id,round);
write_output(fname,vname,ue->pdsch_vars[eNB_id]->dl_bf_ch_estimates_ext[0],12*N_RB_DL*nsymb,1,1);
}
if (ue->frame_parms.nb_antennas_rx == 2) {
sprintf(fname,"dlsch%d_ch_r%d_ext01.m",eNB_id,round);
sprintf(vname,"dl%d_ch_r%d_ext01",eNB_id,round);
write_output(fname,vname,ue->pdsch_vars[eNB_id]->dl_ch_estimates_ext[1],12*N_RB_DL*nsymb,1,1);
}
if (ue->frame_parms.nb_antenna_ports_eNB == 2) {
sprintf(fname,"dlsch%d_ch_r%d_ext10.m",eNB_id,round);
sprintf(vname,"dl%d_ch_r%d_ext10",eNB_id,round);
write_output(fname,vname,ue->pdsch_vars[eNB_id]->dl_ch_estimates_ext[2],12*N_RB_DL*nsymb,1,1);
if (ue->frame_parms.nb_antennas_rx == 2) {
sprintf(fname,"dlsch%d_ch_r%d_ext11.m",eNB_id,round);
sprintf(vname,"dl%d_ch_r%d_ext11",eNB_id,round);
write_output(fname,vname,ue->pdsch_vars[eNB_id]->dl_ch_estimates_ext[3],12*N_RB_DL*nsymb,1,1);
}
}
sprintf(fname,"dlsch%d_rxF_r%d_uespec0.m",eNB_id,round);
sprintf(vname,"dl%d_rxF_r%d_uespec0",eNB_id,round);
write_output(fname,vname,ue->pdsch_vars[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);
*/
sprintf(fname,"dlsch%d_r%d_rho.m",eNB_id,round);
sprintf(vname,"dl_rho_r%d_%d",eNB_id,round);
write_output(fname,vname,ue->pdsch_vars[eNB_id]->dl_ch_rho_ext[0],12*N_RB_DL*nsymb,1,1);
sprintf(fname,"dlsch%d_rxF_r%d_comp0.m",eNB_id,round);
sprintf(vname,"dl%d_rxF_r%d_comp0",eNB_id,round);
write_output(fname,vname,ue->pdsch_vars[eNB_id]->rxdataF_comp0[0],12*N_RB_DL*nsymb,1,1);
if (ue->frame_parms.nb_antenna_ports_eNB == 2) {
sprintf(fname,"dlsch%d_rxF_r%d_comp1.m",eNB_id,round);
sprintf(vname,"dl%d_rxF_r%d_comp1",eNB_id,round);
write_output(fname,vname,ue->pdsch_vars[eNB_id]->rxdataF_comp1[0][round],12*N_RB_DL*nsymb,1,1);
}
sprintf(fname,"dlsch%d_rxF_r%d_llr.m",eNB_id,round);
sprintf(vname,"dl%d_r%d_llr",eNB_id,round);
write_output(fname,vname, ue->pdsch_vars[eNB_id]->llr[0],coded_bits_per_codeword,1,0);
sprintf(fname,"dlsch%d_r%d_mag1.m",eNB_id,round);
sprintf(vname,"dl%d_r%d_mag1",eNB_id,round);
write_output(fname,vname,ue->pdsch_vars[eNB_id]->dl_ch_mag0[0],12*N_RB_DL*nsymb,1,1);
sprintf(fname,"dlsch%d_r%d_mag2.m",eNB_id,round);
sprintf(vname,"dl%d_r%d_mag2",eNB_id,round);
write_output(fname,vname,ue->pdsch_vars[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