Commit 8d78c0c9 authored by knopp's avatar knopp
Browse files

Changes:

0. unwiring of 40 MHz channel hard-coding and general SSB location
1. PSS dynamic range improvement and DC carrier fix
2. SSS channel estimation and detection corrected
3. PBCH channel estimation fixed
4. PBCH channel extraction/compensation reworked for the general case
5. fixed-point low-complexity polar decoder integrated to PBCH decoding chain

works by default (nr_pbchsim) at 100 MHz / 30 kHz SCS and SSB wherever (but known to UE)
parent 5e9da7c5
......@@ -380,7 +380,7 @@ void nr_phy_config_request_sim(PHY_VARS_gNB *gNB,int N_RB_DL,int N_RB_UL,int mu)
gNB_config->rf_config.ul_carrier_bandwidth.value = N_RB_UL;
gNB_config->sch_config.half_frame_index.value = 0;
gNB_config->sch_config.ssb_subcarrier_offset.value = 0;
gNB_config->sch_config.n_ssb_crb.value = N_RB_DL-20;
gNB_config->sch_config.n_ssb_crb.value = (N_RB_DL-20)>>1;
gNB_config->sch_config.ssb_subcarrier_offset.value = 0;
......
......@@ -655,7 +655,7 @@ int init_nr_ue_signal(PHY_VARS_NR_UE *ue,
int i,j,k,l;
int eNB_id;
int th_id;
int n_ssb_crb=(fp->N_RB_DL-20)>>1;
abstraction_flag = 0;
fp->nb_antennas_tx = 1;
fp->nb_antennas_rx=1;
......@@ -664,7 +664,7 @@ int init_nr_ue_signal(PHY_VARS_NR_UE *ue,
printf("Initializing UE vars (abstraction %"PRIu8") for eNB TXant %"PRIu8", UE RXant %"PRIu8"\n",abstraction_flag,fp->nb_antennas_tx,fp->nb_antennas_rx);
//LOG_D(PHY,"[MSC_NEW][FRAME 00000][PHY_UE][MOD %02u][]\n", ue->Mod_id+NB_eNB_INST);
nr_init_frame_parms_ue(&ue->frame_parms,NR_MU_1,NORMAL);
nr_init_frame_parms_ue(&ue->frame_parms,NR_MU_1,NORMAL,n_ssb_crb,0);
phy_init_nr_top(ue);
// many memory allocation sizes are hard coded
......@@ -955,13 +955,12 @@ void phy_init_nr_top(PHY_VARS_NR_UE *ue)
generate_ul_reference_signal_sequences(SHRT_MAX);
// Polar encoder init for PBCH
//nr_polar_init(&frame_parms->pbch_polar_params, 1);
/*t_nrPolar_paramsPtr nrPolar_params = NULL, currentPtr = NULL;
ue->nrPolar_params = NULL;
nr_polar_init(&ue->nrPolar_params,
NR_POLAR_PBCH_MESSAGE_TYPE,
NR_POLAR_PBCH_PAYLOAD_BITS,
NR_POLAR_PBCH_AGGREGATION_LEVEL);*/
NR_POLAR_PBCH_AGGREGATION_LEVEL);
//lte_sync_time_init(frame_parms);
//generate_ul_ref_sigs();
......
......@@ -28,7 +28,7 @@ uint16_t nr_slots_per_subframe[MAX_NUM_SUBCARRIER_SPACING] = {1, 2, 4, 16, 32};
int nr_init_frame_parms0(
NR_DL_FRAME_PARMS *frame_parms,
NR_DL_FRAME_PARMS *fp,
int mu,
int Ncp)
......@@ -37,9 +37,9 @@ int nr_init_frame_parms0(
#if DISABLE_LOG_X
printf("Initializing frame parms for mu %d, N_RB %d, Ncp %d\n",mu, frame_parms->N_RB_DL, Ncp);
printf("Initializing frame parms for mu %d, N_RB %d, Ncp %d\n",mu, fp->N_RB_DL, Ncp);
#else
LOG_I(PHY,"Initializing frame parms for mu %d, N_RB %d, Ncp %d\n",mu, frame_parms->N_RB_DL, Ncp);
LOG_I(PHY,"Initializing frame parms for mu %d, N_RB %d, Ncp %d\n",mu, fp->N_RB_DL, Ncp);
#endif
if (Ncp == NFAPI_CP_EXTENDED)
......@@ -48,15 +48,15 @@ int nr_init_frame_parms0(
switch(mu) {
case NR_MU_0: //15kHz scs
frame_parms->subcarrier_spacing = nr_subcarrier_spacing[NR_MU_0];
frame_parms->slots_per_subframe = nr_slots_per_subframe[NR_MU_0];
fp->subcarrier_spacing = nr_subcarrier_spacing[NR_MU_0];
fp->slots_per_subframe = nr_slots_per_subframe[NR_MU_0];
break;
case NR_MU_1: //30kHz scs
frame_parms->subcarrier_spacing = nr_subcarrier_spacing[NR_MU_1];
frame_parms->slots_per_subframe = nr_slots_per_subframe[NR_MU_1];
fp->subcarrier_spacing = nr_subcarrier_spacing[NR_MU_1];
fp->slots_per_subframe = nr_slots_per_subframe[NR_MU_1];
switch(frame_parms->N_RB_DL){
switch(fp->N_RB_DL){
case 11:
case 24:
case 38:
......@@ -65,17 +65,17 @@ int nr_init_frame_parms0(
case 65:
case 106: //40 MHz
if (frame_parms->threequarter_fs) {
frame_parms->ofdm_symbol_size = 1536;
frame_parms->first_carrier_offset = 900; //1536 - 636
frame_parms->nb_prefix_samples0 = 132;
frame_parms->nb_prefix_samples = 108;
if (fp->threequarter_fs) {
fp->ofdm_symbol_size = 1536;
fp->first_carrier_offset = 900; //1536 - 636
fp->nb_prefix_samples0 = 132;
fp->nb_prefix_samples = 108;
}
else {
frame_parms->ofdm_symbol_size = 2048;
frame_parms->first_carrier_offset = 1412; //2048 - 636
frame_parms->nb_prefix_samples0 = 176;
frame_parms->nb_prefix_samples = 144;
fp->ofdm_symbol_size = 2048;
fp->first_carrier_offset = 1412; //2048 - 636
fp->nb_prefix_samples0 = 176;
fp->nb_prefix_samples = 144;
}
break;
......@@ -84,44 +84,44 @@ int nr_init_frame_parms0(
case 189:
case 217: //80 MHz
if (frame_parms->threequarter_fs) {
frame_parms->ofdm_symbol_size = 3072;
frame_parms->first_carrier_offset = 1770; //3072 - 1302
frame_parms->nb_prefix_samples0 = 264;
frame_parms->nb_prefix_samples = 216;
if (fp->threequarter_fs) {
fp->ofdm_symbol_size = 3072;
fp->first_carrier_offset = 1770; //3072 - 1302
fp->nb_prefix_samples0 = 264;
fp->nb_prefix_samples = 216;
}
else {
frame_parms->ofdm_symbol_size = 4096;
frame_parms->first_carrier_offset = 2794; //4096 - 1302
frame_parms->nb_prefix_samples0 = 352;
frame_parms->nb_prefix_samples = 288;
fp->ofdm_symbol_size = 4096;
fp->first_carrier_offset = 2794; //4096 - 1302
fp->nb_prefix_samples0 = 352;
fp->nb_prefix_samples = 288;
}
break;
case 245:
AssertFatal(frame_parms->threequarter_fs==0,"3/4 sampling impossible for N_RB %d and MU %d\n",frame_parms->N_RB_DL,mu);
frame_parms->ofdm_symbol_size = 4096;
frame_parms->first_carrier_offset = 2626; //4096 - 1478
frame_parms->nb_prefix_samples0 = 352;
frame_parms->nb_prefix_samples = 288;
AssertFatal(fp->threequarter_fs==0,"3/4 sampling impossible for N_RB %d and MU %d\n",fp->N_RB_DL,mu);
fp->ofdm_symbol_size = 4096;
fp->first_carrier_offset = 2626; //4096 - 1478
fp->nb_prefix_samples0 = 352;
fp->nb_prefix_samples = 288;
break;
case 273:
AssertFatal(frame_parms->threequarter_fs==0,"3/4 sampling impossible for N_RB %d and MU %d\n",frame_parms->N_RB_DL,mu);
frame_parms->ofdm_symbol_size = 4096;
frame_parms->first_carrier_offset = 2458; //4096 - 1638
frame_parms->nb_prefix_samples0 = 352;
frame_parms->nb_prefix_samples = 288;
AssertFatal(fp->threequarter_fs==0,"3/4 sampling impossible for N_RB %d and MU %d\n",fp->N_RB_DL,mu);
fp->ofdm_symbol_size = 4096;
fp->first_carrier_offset = 2458; //4096 - 1638
fp->nb_prefix_samples0 = 352;
fp->nb_prefix_samples = 288;
break;
default:
AssertFatal(1==0,"Number of resource blocks %d undefined for mu %d, frame parms = %p\n", frame_parms->N_RB_DL, mu, frame_parms);
AssertFatal(1==0,"Number of resource blocks %d undefined for mu %d, frame parms = %p\n", fp->N_RB_DL, mu, fp);
}
break;
case NR_MU_2: //60kHz scs
frame_parms->subcarrier_spacing = nr_subcarrier_spacing[NR_MU_2];
frame_parms->slots_per_subframe = nr_slots_per_subframe[NR_MU_2];
fp->subcarrier_spacing = nr_subcarrier_spacing[NR_MU_2];
fp->slots_per_subframe = nr_slots_per_subframe[NR_MU_2];
switch(frame_parms->N_RB_DL){ //FR1 bands only
switch(fp->N_RB_DL){ //FR1 bands only
case 11:
case 18:
case 38:
......@@ -135,77 +135,80 @@ int nr_init_frame_parms0(
case 121:
case 135:
default:
AssertFatal(1==0,"Number of resource blocks %d undefined for mu %d, frame parms = %p\n", frame_parms->N_RB_DL, mu, frame_parms);
AssertFatal(1==0,"Number of resource blocks %d undefined for mu %d, frame parms = %p\n", fp->N_RB_DL, mu, fp);
}
break;
case NR_MU_3:
frame_parms->subcarrier_spacing = nr_subcarrier_spacing[NR_MU_3];
frame_parms->slots_per_subframe = nr_slots_per_subframe[NR_MU_3];
fp->subcarrier_spacing = nr_subcarrier_spacing[NR_MU_3];
fp->slots_per_subframe = nr_slots_per_subframe[NR_MU_3];
break;
case NR_MU_4:
frame_parms->subcarrier_spacing = nr_subcarrier_spacing[NR_MU_4];
frame_parms->slots_per_subframe = nr_slots_per_subframe[NR_MU_4];
fp->subcarrier_spacing = nr_subcarrier_spacing[NR_MU_4];
fp->slots_per_subframe = nr_slots_per_subframe[NR_MU_4];
break;
default:
AssertFatal(1==0,"Invalid numerology index %d", mu);
}
frame_parms->slots_per_frame = 10* frame_parms->slots_per_subframe;
frame_parms->symbols_per_slot = ((Ncp == NORMAL)? 14 : 12); // to redefine for different slot formats
frame_parms->samples_per_subframe_wCP = frame_parms->ofdm_symbol_size * frame_parms->symbols_per_slot * frame_parms->slots_per_subframe;
frame_parms->samples_per_frame_wCP = 10 * frame_parms->samples_per_subframe_wCP;
frame_parms->samples_per_subframe = (frame_parms->samples_per_subframe_wCP + (frame_parms->nb_prefix_samples0 * frame_parms->slots_per_subframe) +
(frame_parms->nb_prefix_samples * frame_parms->slots_per_subframe * (frame_parms->symbols_per_slot - 1)));
frame_parms->samples_per_frame = 10 * frame_parms->samples_per_subframe;
frame_parms->freq_range = (frame_parms->dl_CarrierFreq < 6e9)? nr_FR1 : nr_FR2;
fp->slots_per_frame = 10* fp->slots_per_subframe;
fp->symbols_per_slot = ((Ncp == NORMAL)? 14 : 12); // to redefine for different slot formats
fp->samples_per_subframe_wCP = fp->ofdm_symbol_size * fp->symbols_per_slot * fp->slots_per_subframe;
fp->samples_per_frame_wCP = 10 * fp->samples_per_subframe_wCP;
fp->samples_per_subframe = (fp->samples_per_subframe_wCP + (fp->nb_prefix_samples0 * fp->slots_per_subframe) +
(fp->nb_prefix_samples * fp->slots_per_subframe * (fp->symbols_per_slot - 1)));
fp->samples_per_frame = 10 * fp->samples_per_subframe;
fp->freq_range = (fp->dl_CarrierFreq < 6e9)? nr_FR1 : nr_FR2;
// Initial bandwidth part configuration -- full carrier bandwidth
frame_parms->initial_bwp_dl.bwp_id = 0;
frame_parms->initial_bwp_dl.scs = frame_parms->subcarrier_spacing;
frame_parms->initial_bwp_dl.location = 0;
frame_parms->initial_bwp_dl.N_RB = frame_parms->N_RB_DL;
frame_parms->initial_bwp_dl.cyclic_prefix = Ncp;
frame_parms->initial_bwp_dl.ofdm_symbol_size = frame_parms->ofdm_symbol_size;
fp->initial_bwp_dl.bwp_id = 0;
fp->initial_bwp_dl.scs = fp->subcarrier_spacing;
fp->initial_bwp_dl.location = 0;
fp->initial_bwp_dl.N_RB = fp->N_RB_DL;
fp->initial_bwp_dl.cyclic_prefix = Ncp;
fp->initial_bwp_dl.ofdm_symbol_size = fp->ofdm_symbol_size;
return 0;
}
int nr_init_frame_parms(nfapi_nr_config_request_t* config,
NR_DL_FRAME_PARMS *frame_parms) {
NR_DL_FRAME_PARMS *fp) {
nr_init_frame_parms0(frame_parms,
nr_init_frame_parms0(fp,
config->subframe_config.numerology_index_mu.value,
config->subframe_config.dl_cyclic_prefix_type.value);
}
int nr_init_frame_parms_ue(NR_DL_FRAME_PARMS *frame_parms,
int nr_init_frame_parms_ue(NR_DL_FRAME_PARMS *fp,
int mu,
int Ncp)
int Ncp,
int n_ssb_crb,
int ssb_subcarrier_offset)
{
nr_init_frame_parms0(frame_parms,mu,Ncp);
nr_init_frame_parms0(fp,mu,Ncp);
int start_rb = n_ssb_crb / (1<<mu);
fp->ssb_start_subcarrier = 12 * start_rb + ssb_subcarrier_offset;
return 0;
}
void nr_dump_frame_parms(NR_DL_FRAME_PARMS *frame_parms)
void nr_dump_frame_parms(NR_DL_FRAME_PARMS *fp)
{
LOG_I(PHY,"frame_parms->scs=%d\n",frame_parms->subcarrier_spacing);
LOG_I(PHY,"frame_parms->ofdm_symbol_size=%d\n",frame_parms->ofdm_symbol_size);
LOG_I(PHY,"frame_parms->nb_prefix_samples0=%d\n",frame_parms->nb_prefix_samples0);
LOG_I(PHY,"frame_parms->nb_prefix_samples=%d\n",frame_parms->nb_prefix_samples);
LOG_I(PHY,"frame_parms->slots_per_subframe=%d\n",frame_parms->slots_per_subframe);
LOG_I(PHY,"frame_parms->samples_per_subframe_wCP=%d\n",frame_parms->samples_per_subframe_wCP);
LOG_I(PHY,"frame_parms->samples_per_frame_wCP=%d\n",frame_parms->samples_per_frame_wCP);
LOG_I(PHY,"frame_parms->samples_per_subframe=%d\n",frame_parms->samples_per_subframe);
LOG_I(PHY,"frame_parms->samples_per_frame=%d\n",frame_parms->samples_per_frame);
LOG_I(PHY,"frame_parms->initial_bwp_dl.bwp_id=%d\n",frame_parms->initial_bwp_dl.bwp_id);
LOG_I(PHY,"frame_parms->initial_bwp_dl.scs=%d\n",frame_parms->initial_bwp_dl.scs);
LOG_I(PHY,"frame_parms->initial_bwp_dl.N_RB=%d\n",frame_parms->initial_bwp_dl.N_RB);
LOG_I(PHY,"frame_parms->initial_bwp_dl.cyclic_prefix=%d\n",frame_parms->initial_bwp_dl.cyclic_prefix);
LOG_I(PHY,"frame_parms->initial_bwp_dl.location=%d\n",frame_parms->initial_bwp_dl.location);
LOG_I(PHY,"frame_parms->initial_bwp_dl.ofdm_symbol_size=%d\n",frame_parms->initial_bwp_dl.ofdm_symbol_size);
LOG_I(PHY,"fp->scs=%d\n",fp->subcarrier_spacing);
LOG_I(PHY,"fp->ofdm_symbol_size=%d\n",fp->ofdm_symbol_size);
LOG_I(PHY,"fp->nb_prefix_samples0=%d\n",fp->nb_prefix_samples0);
LOG_I(PHY,"fp->nb_prefix_samples=%d\n",fp->nb_prefix_samples);
LOG_I(PHY,"fp->slots_per_subframe=%d\n",fp->slots_per_subframe);
LOG_I(PHY,"fp->samples_per_subframe_wCP=%d\n",fp->samples_per_subframe_wCP);
LOG_I(PHY,"fp->samples_per_frame_wCP=%d\n",fp->samples_per_frame_wCP);
LOG_I(PHY,"fp->samples_per_subframe=%d\n",fp->samples_per_subframe);
LOG_I(PHY,"fp->samples_per_frame=%d\n",fp->samples_per_frame);
LOG_I(PHY,"fp->initial_bwp_dl.bwp_id=%d\n",fp->initial_bwp_dl.bwp_id);
LOG_I(PHY,"fp->initial_bwp_dl.scs=%d\n",fp->initial_bwp_dl.scs);
LOG_I(PHY,"fp->initial_bwp_dl.N_RB=%d\n",fp->initial_bwp_dl.N_RB);
LOG_I(PHY,"fp->initial_bwp_dl.cyclic_prefix=%d\n",fp->initial_bwp_dl.cyclic_prefix);
LOG_I(PHY,"fp->initial_bwp_dl.location=%d\n",fp->initial_bwp_dl.location);
LOG_I(PHY,"fp->initial_bwp_dl.ofdm_symbol_size=%d\n",fp->initial_bwp_dl.ofdm_symbol_size);
}
......@@ -377,7 +377,7 @@ void phy_config_request(PHY_Config_t *phy_config);
int init_frame_parms(LTE_DL_FRAME_PARMS *frame_parms,uint8_t osf);
void dump_frame_parms(LTE_DL_FRAME_PARMS *frame_parms);
int nr_init_frame_parms(nfapi_nr_config_request_t* config, NR_DL_FRAME_PARMS *frame_parms);
int nr_init_frame_parms_ue(NR_DL_FRAME_PARMS *frame_parms,int mu,int Ncp);
int nr_init_frame_parms_ue(NR_DL_FRAME_PARMS *frame_parms,int mu,int Ncp,int n_ssb_crb,int ssb_subcarrier_offset);
int init_nr_ue_signal(PHY_VARS_NR_UE *ue,int nb_connected_eNB,uint8_t abstraction_flag);
void nr_dump_frame_parms(NR_DL_FRAME_PARMS *frame_parms);
int phy_init_nr_gNB(PHY_VARS_gNB *gNB, unsigned char is_secondary_gNB, unsigned char abstraction_flag);
......
......@@ -36,7 +36,7 @@ This section deals with basic functions for OFDM Modulation.
#include "common/utils/LOG/vcd_signal_dumper.h"
#include "modulation_common.h"
#include "PHY/LTE_TRANSPORT/transport_common_proto.h"
#define DEBUG_OFDM_MOD
//#define DEBUG_OFDM_MOD
void normal_prefix_mod(int32_t *txdataF,int32_t *txdata,uint8_t nsymb,LTE_DL_FRAME_PARMS *frame_parms)
......
......@@ -25,7 +25,7 @@
#include "PHY/LTE_ESTIMATION/lte_estimation.h"
#include "PHY/NR_UE_ESTIMATION/nr_estimation.h"
#define DEBUG_FEP
//#define DEBUG_FEP
#define SOFFSET 0
......@@ -198,18 +198,15 @@ int nr_slot_fep(PHY_VARS_NR_UE *ue,
switch(channel){
case NR_PBCH_EST:
//if ((l>4) && (l<8)) {
for (aa=0; aa<frame_parms->nb_antenna_ports_eNB; aa++) {
//#ifdef DEBUG_FEP
printf("Channel estimation eNB %d, aatx %d, slot %d, symbol %d\n",eNB_id,aa,Ns,l);
printf("Channel estimation eNB %d, slot %d, symbol %d\n",eNB_id,Ns,l);
//#endif
#if UE_TIMING_TRACE
start_meas(&ue->dlsch_channel_estimation_stats);
#endif
nr_pbch_channel_estimation(ue,eNB_id,0,
Ns,
aa,
l,
symbol);
//}
......@@ -239,11 +236,10 @@ int nr_slot_fep(PHY_VARS_NR_UE *ue,
#endif
}
}
break;
case NR_PDCCH_EST:
for (aa=0; aa<frame_parms->nb_antenna_ports_eNB; aa++) {
#ifdef DEBUG_FEP
printf("PDCCH Channel estimation eNB %d, aatx %d, slot %d, symbol %d start_sc %d\n",eNB_id,aa,Ns,l,coreset_start_subcarrier);
......@@ -253,7 +249,6 @@ int nr_slot_fep(PHY_VARS_NR_UE *ue,
#endif
nr_pdcch_channel_estimation(ue,eNB_id,0,
Ns,
aa,
l,
symbol,
coreset_start_subcarrier,
......@@ -261,12 +256,10 @@ int nr_slot_fep(PHY_VARS_NR_UE *ue,
#if UE_TIMING_TRACE
stop_meas(&ue->dlsch_channel_estimation_stats);
#endif
}
break;
case NR_PDSCH_EST:
for (aa=0; aa<frame_parms->nb_antenna_ports_eNB; aa++) {
#ifdef DEBUG_FEP
printf("Channel estimation eNB %d, aatx %d, slot %d, symbol %d\n",eNB_id,aa,Ns,l);
#endif
......@@ -275,7 +268,6 @@ int nr_slot_fep(PHY_VARS_NR_UE *ue,
#endif
nr_pdsch_channel_estimation(ue,eNB_id,0,
Ns,
aa,
l,
symbol,
bwp_start_subcarrier,
......@@ -283,7 +275,7 @@ int nr_slot_fep(PHY_VARS_NR_UE *ue,
#if UE_TIMING_TRACE
stop_meas(&ue->dlsch_channel_estimation_stats);
#endif
}
break;
case NR_SSS_EST:
......
......@@ -216,17 +216,29 @@ int nr_pdcch_dmrs_rx(PHY_VARS_NR_UE *ue,
return(0);
}
int nr_pbch_dmrs_rx(unsigned int *nr_gold_pbch,
int32_t *output )
int nr_pbch_dmrs_rx(int symbol,unsigned int *nr_gold_pbch,int32_t *output )
{
int m;
int m,m0,m1;
uint8_t idx=0;
AssertFatal(symbol>=0 && symbol <3,"illegal symbol %d\n",symbol);
if (symbol == 0) {
m0=0;
m1=60;
}
else if (symbol == 1) {
m0=60;
m1=84;
}
else {
m0=84;
m1=144;
}
printf("Generating pilots symbol %d, m0 %d, m1 %d\n",symbol,m0,m1);
/// QPSK modulation
for (m=0; m<NR_PBCH_DMRS_LENGTH>>1; m++) {
for (m=m0; m<m1; m++) {
idx = ((((nr_gold_pbch[(m<<1)>>5])>>((m<<1)&0x1f))&1)<<1) ^ (((nr_gold_pbch[((m<<1)+1)>>5])>>(((m<<1)+1)&0x1f))&1);
((int16_t*)output)[m<<1] = nr_rx_mod_table[(NR_MOD_TABLE_QPSK_OFFSET + idx)<<1];
((int16_t*)output)[(m<<1)+1] = nr_rx_mod_table[((NR_MOD_TABLE_QPSK_OFFSET + idx)<<1) + 1];
((int16_t*)output)[(m-m0)<<1] = nr_rx_mod_table[(NR_MOD_TABLE_QPSK_OFFSET + idx)<<1];
((int16_t*)output)[((m-m0)<<1)+1] = nr_rx_mod_table[((NR_MOD_TABLE_QPSK_OFFSET + idx)<<1) + 1];
#ifdef DEBUG_PBCH
if (m<16)
......
......@@ -29,7 +29,7 @@
/*!\brief This function generates the NR Gold sequence (38-211, Sec 5.2.1) for the PBCH DMRS.
@param PHY_VARS_NR_UE* ue structure provides configuration, frame parameters and the pointers to the 32 bits sequence storage tables
*/
int nr_pbch_dmrs_rx(unsigned int *nr_gold_pbch, int32_t *output );
int nr_pbch_dmrs_rx(int dmrss,unsigned int *nr_gold_pbch, int32_t *output );
/*!\brief This function generates the NR Gold sequence (38-211, Sec 5.2.1) for the PDCCH DMRS.
@param PHY_VARS_NR_UE* ue structure provides configuration, frame parameters and the pointers to the 32 bits sequence storage tables
......
......@@ -37,7 +37,7 @@
//#define DEBUG_PBCH
//#define DEBUG_PBCH_ENCODING
//#define DEBUG_PBCH_DMRS
#define DEBUG_PBCH_DMRS
//extern short nr_mod_table[NR_MOD_TABLE_SIZE_SHORT];
#include "PHY/NR_REFSIG/nr_mod_table.h"
......@@ -85,6 +85,11 @@ int nr_generate_pbch_dmrs(uint32_t *gold_pbch_dmrs,
#endif
((int16_t*)txdataF[aa])[(l*frame_parms->ofdm_symbol_size + k)<<1] = (a * mod_dmrs[m<<1]) >> 15;
((int16_t*)txdataF[aa])[((l*frame_parms->ofdm_symbol_size + k)<<1) + 1] = (a * mod_dmrs[(m<<1) + 1]) >> 15;
#ifdef DEBUG_PBCH_DMRS
printf("(%d,%d)\n",
((int16_t*)txdataF[aa])[(l*frame_parms->ofdm_symbol_size + k)<<1],
((int16_t*)txdataF[aa])[((l*frame_parms->ofdm_symbol_size + k)<<1)+1]);
#endif
k+=4;
if (k >= frame_parms->ofdm_symbol_size)
......@@ -101,6 +106,11 @@ int nr_generate_pbch_dmrs(uint32_t *gold_pbch_dmrs,
#endif
((int16_t*)txdataF[aa])[(l*frame_parms->ofdm_symbol_size + k)<<1] = (a * mod_dmrs[m<<1]) >> 15;
((int16_t*)txdataF[aa])[((l*frame_parms->ofdm_symbol_size + k)<<1) + 1] = (a * mod_dmrs[(m<<1) + 1]) >> 15;
#ifdef DEBUG_PBCH_DMRS
printf("(%d,%d)\n",
((int16_t*)txdataF[aa])[(l*frame_parms->ofdm_symbol_size + k)<<1],
((int16_t*)txdataF[aa])[((l*frame_parms->ofdm_symbol_size + k)<<1)+1]);
#endif
k+=(m==71)?148:4; // Jump from 44+nu to 192+nu
if (k >= frame_parms->ofdm_symbol_size)
......@@ -117,6 +127,11 @@ int nr_generate_pbch_dmrs(uint32_t *gold_pbch_dmrs,
#endif
((int16_t*)txdataF[aa])[(l*frame_parms->ofdm_symbol_size + k)<<1] = (a * mod_dmrs[m<<1]) >> 15;
((int16_t*)txdataF[aa])[((l*frame_parms->ofdm_symbol_size + k)<<1) + 1] = (a * mod_dmrs[(m<<1) + 1]) >> 15;
#ifdef DEBUG_PBCH_DMRS
printf("(%d,%d)\n",
((int16_t*)txdataF[aa])[(l*frame_parms->ofdm_symbol_size + k)<<1],
((int16_t*)txdataF[aa])[((l*frame_parms->ofdm_symbol_size + k)<<1)+1]);
#endif
k+=4;
if (k >= frame_parms->ofdm_symbol_size)
......
......@@ -19,51 +19,65 @@
* contact@openairinterface.org
*/
#ifdef USER_MODE
#include <string.h>
#endif
//#include "defs.h"
//#include "SCHED/defs.h"
#include "PHY/defs_nr_UE.h"
#include "PHY/NR_REFSIG/refsig_defs_ue.h"
#include "filt16a_32.h"
#include "T.h"
//#define DEBUG_CH
int nr_pbch_channel_estimation(PHY_VARS_NR_UE *ue,
uint8_t eNB_id,
uint8_t eNB_offset,
unsigned char Ns,
unsigned char p,
unsigned char l,
unsigned char symbol)
{
int pilot[2][200] __attribute__((aligned(16)));
int pilot[200] __attribute__((aligned(16)));
unsigned char aarx;
unsigned short k;
unsigned int pilot_cnt;
int16_t ch[2],*pil,*rxF,*dl_ch,*fl,*fm,*fr;
int ch_offset,symbol_offset;
int dmrss;
//uint16_t Nid_cell = (eNB_offset == 0) ? ue->frame_parms.Nid_cell : ue->measurements.adj_cell_id[eNB_offset-1];
uint8_t nushift, ssb_index=0, n_hf=0;
uint8_t nushift,ssb_index=0, n_hf=0;
int **dl_ch_estimates =ue->common_vars.common_vars_rx_data_per_thread[ue->current_thread_id[Ns>>1]].dl_ch_estimates[eNB_offset];
int **rxdataF=ue->common_vars.common_vars_rx_data_per_thread[ue->current_thread_id[Ns>>1]].rxdataF;
nushift = ue->frame_parms.Nid_cell%4;
ue->frame_parms.nushift = nushift;
unsigned int ssb_offset = ue->frame_parms.first_carrier_offset + ue->frame_parms.ssb_start_subcarrier;
if (ssb_offset>= ue->frame_parms.ofdm_symbol_size) ssb_offset-=ue->frame_parms.ofdm_symbol_size;
if (ue->is_synchronized ==0 ) dmrss = symbol-1;
else dmrss = symbol-5;
if (ue->high_speed_flag == 0) // use second channel estimate position for temporary storage
ch_offset = ue->frame_parms.ofdm_symbol_size ;
else
ch_offset = ue->frame_parms.ofdm_symbol_size*symbol;
AssertFatal((symbol > 0 && symbol < 4 && ue->is_synchronized == 0) ||
(symbol > 0 && symbol < 4 && ue->is_synchronized == 0),
"symbol %d is illegal for PBCH DM-RS (is_synchronized %d)\n",
symbol,ue->is_synchronized);
symbol_offset = ue->frame_parms.ofdm_symbol_size*symbol;
k = nushift;
#ifdef DEBUG_CH
printf("PBCH Channel Estimation : ThreadId %d, eNB_offset %d cell_id %d ch_offset %d, OFDM size %d, Ncp=%d, l=%d, Ns=%d, k=%d symbol %d\n",ue->current_thread_id[Ns>>1], eNB_offset,Nid_cell,ch_offset,ue->frame_parms.ofdm_symbol_size,
printf("PBCH Channel Estimation : ThreadId %d, eNB_offset %d ch_offset %d, OFDM size %d, Ncp=%d, l=%d, Ns=%d, k=%d symbol %d\n",ue->current_thread_id[Ns>>1], eNB_offset,ch_offset,ue->frame_parms.ofdm_symbol_size,
ue->frame_parms.Ncp,l,Ns,k, symbol);
#endif
......@@ -99,13 +113,14 @@ int nr_pbch_channel_estimation(PHY_VARS_NR_UE *ue,
}
// generate pilot
nr_pbch_dmrs_rx(ue->nr_gold_pbch[n_hf][ssb_index], &pilot[p][0]);
nr_pbch_dmrs_rx(dmrss,ue->nr_gold_pbch[n_hf][ssb_index], &pilot[0]);
int re_offset = ssb_offset;
for (aarx=0; aarx<ue->frame_parms.nb_antennas_rx; aarx++) {
pil = (int16_t *)&pilot[p][0];
rxF = (int16_t *)&rxdataF[aarx][(symbol_offset+k+(ue->frame_parms.ofdm_symbol_size-10*12))];
dl_ch = (int16_t *)&dl_ch_estimates[(p<<1)+aarx][ch_offset];
pil = (int16_t *)&pilot[0];
rxF = (int16_t *)&rxdataF[aarx][(symbol_offset+k+re_offset)];
dl_ch = (int16_t *)&dl_ch_estimates[aarx][ch_offset];
memset(dl_ch,0,4*(ue->frame_parms.ofdm_symbol_size));
if (ue->high_speed_flag==0) // multiply previous channel estimate by ch_est_alpha
......@@ -113,7 +128,7 @@ int nr_pbch_channel_estimation(PHY_VARS_NR_UE *ue,
ue->ch_est_alpha,dl_ch-(ue->frame_parms.ofdm_symbol_size<<1),