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PUSCH Rx channel estimation supporting DMRS type 1 and mapping type B

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This commit is contained in:
Khalid Ahmed
2019-12-18 11:02:55 +01:00
committed by Thomas Schlichter
parent bf24772766
commit ccc515c537
14 changed files with 220 additions and 137 deletions
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cmake_targets/CMakeLists.txt
+2 -1
View File
@@ -1334,6 +1334,7 @@ set(PHY_SRC_UE
${OPENAIR1_DIR}/PHY/NR_TRANSPORT/nr_ulsch_demodulation.c
${OPENAIR1_DIR}/PHY/NR_REFSIG/nr_dmrs_rx.c
${OPENAIR1_DIR}/PHY/NR_REFSIG/nr_gold.c
${OPENAIR1_DIR}/PHY/NR_REFSIG/dmrs_nr.c
${OPENAIR1_DIR}/PHY/NR_UE_ESTIMATION/filt16a_32.c
${OPENAIR1_DIR}/PHY/NR_ESTIMATION/nr_ul_channel_estimation.c
${OPENAIR1_DIR}/PHY/NR_ESTIMATION/nr_adjust_sync_gNB.c
@@ -1362,7 +1363,6 @@ set(PHY_SRC_UE
${OPENAIR1_DIR}/PHY/NR_UE_TRANSPORT/pss_nr.c
${OPENAIR1_DIR}/PHY/NR_UE_TRANSPORT/sss_nr.c
${OPENAIR1_DIR}/PHY/NR_UE_TRANSPORT/cic_filter_nr.c
${OPENAIR1_DIR}/PHY/NR_UE_TRANSPORT/dmrs_nr.c
${OPENAIR1_DIR}/PHY/NR_UE_TRANSPORT/nr_initial_sync.c
${OPENAIR1_DIR}/PHY/NR_UE_TRANSPORT/nr_pbch.c
${OPENAIR1_DIR}/PHY/NR_UE_TRANSPORT/nr_dlsch_demodulation.c
@@ -1380,6 +1380,7 @@ set(PHY_SRC_UE
${OPENAIR1_DIR}/PHY/NR_UE_TRANSPORT/nr_ulsch_ue.c
${OPENAIR1_DIR}/PHY/NR_REFSIG/ul_ref_seq_nr.c
${OPENAIR1_DIR}/PHY/NR_REFSIG/nr_dmrs_rx.c
${OPENAIR1_DIR}/PHY/NR_REFSIG/dmrs_nr.c
${OPENAIR1_DIR}/PHY/NR_REFSIG/nr_gold_ue.c
${OPENAIR1_DIR}/PHY/NR_UE_ESTIMATION/filt16a_32.c
${OPENAIR1_DIR}/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c
nfapi/open-nFAPI/nfapi/public_inc/nfapi_nr_interface.h
-1
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@@ -690,7 +690,6 @@ typedef struct {
uint8_t frame_offset;
uint16_t number_symbols;
uint16_t start_symbol;
uint8_t nb_re_dmrs;
uint8_t length_dmrs;
nr_pusch_freq_hopping_t pusch_freq_hopping;
uint8_t mcs;
openair1/PHY/INIT/nr_init.c
+15 -4
View File
@@ -153,13 +153,25 @@ int phy_init_nr_gNB(PHY_VARS_gNB *gNB,
}
}
//------------- config PUSCH DMRS parameters(to be updated from RRC)--------------//
gNB->dmrs_UplinkConfig.pusch_dmrs_type = pusch_dmrs_type1;
gNB->dmrs_UplinkConfig.pusch_dmrs_AdditionalPosition = pusch_dmrs_pos3;
gNB->dmrs_UplinkConfig.pusch_maxLength = pusch_len1;
//--------------------------------------------------------------------------------//
nr_init_pdsch_dmrs(gNB, cfg->sch_config.physical_cell_id.value);
// default values until overwritten by RRCConnectionReconfiguration
for (i=0;i<MAX_NR_OF_UL_ALLOCATIONS;i++){
gNB->pusch_config.pusch_TimeDomainResourceAllocation[i] = (PUSCH_TimeDomainResourceAllocation_t *)malloc16(sizeof(PUSCH_TimeDomainResourceAllocation_t));
gNB->pusch_config.pusch_TimeDomainResourceAllocation[i]->mappingType = typeB;
}
/// Transport init necessary for NR synchro
init_nr_transport(gNB);
gNB->first_run_I0_measurements =
1; ///This flag used to be static. With multiple gNBs this does no longer work, hence we put it in the structure. However it has to be initialized with 1, which is performed here.
gNB->first_run_I0_measurements = 1; ///This flag used to be static. With multiple gNBs this does no longer work, hence we put it in the structure. However it has to be initialized with 1, which is performed here.
common_vars->rxdata = (int32_t **)malloc16(15*sizeof(int32_t*));
common_vars->txdataF = (int32_t **)malloc16(15*sizeof(int32_t*));
common_vars->rxdataF = (int32_t **)malloc16(15*sizeof(int32_t*));
@@ -509,8 +521,7 @@ void init_nr_transport(PHY_VARS_gNB *gNB) {
rel15_ul->ulsch_pdu_rel15.number_rbs = 50;
rel15_ul->ulsch_pdu_rel15.start_symbol = 0;
rel15_ul->ulsch_pdu_rel15.number_symbols = 14;
rel15_ul->ulsch_pdu_rel15.nb_re_dmrs = 6;
rel15_ul->ulsch_pdu_rel15.length_dmrs = 1;
rel15_ul->ulsch_pdu_rel15.length_dmrs = gNB->dmrs_UplinkConfig.pusch_maxLength;
rel15_ul->ulsch_pdu_rel15.Qm = 2;
rel15_ul->ulsch_pdu_rel15.R = 679;
rel15_ul->ulsch_pdu_rel15.mcs = 9;
openair1/PHY/INIT/nr_init_ue.c
+2 -2
View File
@@ -700,12 +700,12 @@ int init_nr_ue_signal(PHY_VARS_NR_UE *ue,
for (i=0; i<MAX_NR_OF_UL_ALLOCATIONS; i++) {
ue->pusch_config.pusch_TimeDomainResourceAllocation[i] = (PUSCH_TimeDomainResourceAllocation_t *)malloc16(sizeof(PUSCH_TimeDomainResourceAllocation_t));
ue->pusch_config.pusch_TimeDomainResourceAllocation[i]->mappingType = typeA;
ue->pusch_config.pusch_TimeDomainResourceAllocation[i]->mappingType = typeB;
}
//------------- config DMRS parameters--------------//
ue->dmrs_UplinkConfig.pusch_dmrs_type = pusch_dmrs_type1;
ue->dmrs_UplinkConfig.pusch_dmrs_AdditionalPosition = pusch_dmrs_pos0;
ue->dmrs_UplinkConfig.pusch_dmrs_AdditionalPosition = pusch_dmrs_pos3;
ue->dmrs_UplinkConfig.pusch_maxLength = pusch_len1;
//-------------------------------------------------//
ue->nr_gold_pusch_dmrs = (uint32_t ****)malloc16(fp->slots_per_frame*sizeof(uint32_t ***));
openair1/PHY/NR_ESTIMATION/nr_ul_channel_estimation.c
+1 -1
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@@ -111,7 +111,7 @@ int nr_pusch_channel_estimation(PHY_VARS_gNB *gNB,
//------------------generate DMRS------------------//
length_dmrs = 1; //to update from pusch config
length_dmrs = gNB->dmrs_UplinkConfig.pusch_maxLength;
nr_gold_pusch(gNB, symbol, n_idDMRS, length_dmrs);
openair1/PHY/NR_UE_TRANSPORT/dmrs_nr.c → openair1/PHY/NR_REFSIG/dmrs_nr.c
View File
openair1/PHY/NR_TRANSPORT/nr_dlsch_tools.c
+1 -2
View File
@@ -338,8 +338,7 @@ void nr_fill_ulsch(PHY_VARS_gNB *gNB,
rel15_ul->ulsch_pdu_rel15.number_rbs = ulsch_pdu->rb_size;
rel15_ul->ulsch_pdu_rel15.start_symbol = ulsch_pdu->start_symbol_index;
rel15_ul->ulsch_pdu_rel15.number_symbols = ulsch_pdu->nr_of_symbols;
rel15_ul->ulsch_pdu_rel15.nb_re_dmrs = 6; //where should this come from?
rel15_ul->ulsch_pdu_rel15.length_dmrs = 1; //where should this come from?
rel15_ul->ulsch_pdu_rel15.length_dmrs = gNB->dmrs_UplinkConfig.pusch_maxLength;
rel15_ul->ulsch_pdu_rel15.Qm = ulsch_pdu->qam_mod_order;
rel15_ul->ulsch_pdu_rel15.mcs = ulsch_pdu->mcs_index;
rel15_ul->ulsch_pdu_rel15.rv = ulsch_pdu->pusch_data.rv_index;
openair1/PHY/NR_TRANSPORT/nr_transport_proto.h
+5 -2
View File
@@ -62,6 +62,7 @@ void nr_rx_pusch(PHY_VARS_gNB *gNB,
@param start_rb The starting RB in the RB allocation (used for Resource Allocation Type 1 in NR)
@param nb_rb_pusch The number of RBs allocated (used for Resource Allocation Type 1 in NR)
@param frame_parms, Pointer to frame descriptor structure
@param is_dmrs_symbol, flag to indicate wether this OFDM symbol contains DMRS symbols or not.
*/
void nr_ulsch_extract_rbs_single(int **rxdataF,
@@ -73,7 +74,9 @@ void nr_ulsch_extract_rbs_single(int **rxdataF,
unsigned char symbol,
unsigned short start_rb,
unsigned short nb_rb_pusch,
NR_DL_FRAME_PARMS *frame_parms);
NR_DL_FRAME_PARMS *frame_parms,
uint8_t is_dmrs_symbol,
uint8_t dmrs_symbol);
void nr_ulsch_scale_channel(int32_t **ul_ch_estimates_ext,
NR_DL_FRAME_PARMS *frame_parms,
@@ -118,7 +121,7 @@ void nr_ulsch_channel_compensation(int **rxdataF_ext,
int **rho,
NR_DL_FRAME_PARMS *frame_parms,
unsigned char symbol,
uint8_t pilots,
uint8_t is_dmrs_symbol,
unsigned char mod_order,
unsigned short nb_rb,
unsigned char output_shift);
openair1/PHY/NR_TRANSPORT/nr_ulsch_decoding.c
+1 -1
View File
@@ -323,7 +323,7 @@ uint32_t nr_ulsch_decoding(PHY_VARS_gNB *phy_vars_gNB,
uint16_t R = nfapi_ulsch_pdu_rel15->R;
uint8_t mcs = nfapi_ulsch_pdu_rel15->mcs;
uint8_t n_layers = nfapi_ulsch_pdu_rel15->n_layers;
uint8_t nb_re_dmrs = nfapi_ulsch_pdu_rel15->nb_re_dmrs;
uint16_t nb_re_dmrs = harq_process->nb_re_dmrs;
uint8_t length_dmrs = nfapi_ulsch_pdu_rel15->length_dmrs;
// ------------------------------------------------------------------
openair1/PHY/NR_TRANSPORT/nr_ulsch_demodulation.c
+137 -113
View File
@@ -3,6 +3,7 @@
#include "nr_transport_proto.h"
#include "PHY/impl_defs_top.h"
#include "PHY/NR_TRANSPORT/nr_sch_dmrs.h"
#include "PHY/NR_REFSIG/dmrs_nr.h"
#include "PHY/NR_ESTIMATION/nr_ul_estimation.h"
#include "PHY/defs_nr_common.h"
@@ -229,10 +230,12 @@ void nr_ulsch_extract_rbs_single(int **rxdataF,
unsigned char symbol,
unsigned short start_rb,
unsigned short nb_rb_pusch,
NR_DL_FRAME_PARMS *frame_parms)
NR_DL_FRAME_PARMS *frame_parms,
uint8_t is_dmrs_symbol,
uint8_t dmrs_symbol)
{
unsigned short start_re, re, nb_re_pusch;
unsigned char aarx, is_dmrs_symbol = 0;
unsigned char aarx;
uint32_t rxF_ext_index = 0;
uint32_t ul_ch0_ext_index = 0;
uint32_t ul_ch0_index = 0;
@@ -242,12 +245,10 @@ void nr_ulsch_extract_rbs_single(int **rxdataF,
#ifdef DEBUG_RB_EXT
printf("--------------------symbol = %d-----------------------\n", symbol);
printf("--------------------symbol = %d, is_dmrs_symbol = %u-----------------------\n", symbol, is_dmrs_symbol);
printf("--------------------ch_ext_index = %d-----------------------\n", symbol*NR_NB_SC_PER_RB * nb_rb_pusch);
#endif
is_dmrs_symbol = (symbol == 2) ? 1 : 0; //to be updated from config
start_re = (frame_parms->first_carrier_offset + (start_rb * NR_NB_SC_PER_RB))%frame_parms->ofdm_symbol_size;
@@ -258,7 +259,8 @@ void nr_ulsch_extract_rbs_single(int **rxdataF,
rxF = (int16_t *)&rxdataF[aarx][symbol * frame_parms->ofdm_symbol_size];
rxF_ext = (int16_t *)&rxdataF_ext[aarx][symbol * nb_re_pusch]; // [hna] rxdataF_ext isn't contiguous in order to solve an alignment problem ib llr computation in case of mod_order = 4, 6
ul_ch0 = &ul_ch_estimates[aarx][(2*(frame_parms->ofdm_symbol_size))]; // DMRS REs are only in symbol 2 (to be updated from config)
ul_ch0 = &ul_ch_estimates[aarx][dmrs_symbol*frame_parms->ofdm_symbol_size]; // update channel estimates if new dmrs symbol are available
ul_ch0_ext = &ul_ch_estimates_ext[aarx][symbol*nb_re_pusch];
for (re = 0; re < nb_re_pusch; re++) {
@@ -269,17 +271,18 @@ void nr_ulsch_extract_rbs_single(int **rxdataF,
rxF_ext[rxF_ext_index + 1] = (rxF[(((start_re + re)*2) + 1) % (frame_parms->ofdm_symbol_size*2)]);
ul_ch0_ext[ul_ch0_ext_index] = ul_ch0[ul_ch0_index];
ul_ch0_ext_index++;
rxF_ext_index = rxF_ext_index + 2;
}
ul_ch0_index++;
#ifdef DEBUG_RB_EXT
printf("rxF_ext[%d] = %d\n", rxF_ext_index, rxF_ext[rxF_ext_index]);
printf("rxF_ext[%d] = %d\n", rxF_ext_index+1, rxF_ext[rxF_ext_index+1]);
printf("ul_ch0_ext[%d] = %d\n", 2*ul_ch0_ext_index, ((int16_t *)ul_ch0_ext)[2*ul_ch0_ext_index]);
printf("ul_ch0_ext[%d] = %d\n", 2*ul_ch0_ext_index + 1, ((int16_t *)ul_ch0_ext)[2*ul_ch0_ext_index + 1]);
printf("ul_ch0_ext[%d] = %d\n", 2*rxF_ext_index, ((int16_t *)ul_ch0_ext)[2*rxF_ext_index]);
printf("ul_ch0_ext[%d] = %d\n", 2*rxF_ext_index + 1, ((int16_t *)ul_ch0_ext)[2*rxF_ext_index + 1]);
#endif
rxF_ext_index = rxF_ext_index + 2;
ul_ch0_ext_index++;
}
ul_ch0_index++;
}
}
}
@@ -288,7 +291,7 @@ void nr_ulsch_scale_channel(int **ul_ch_estimates_ext,
NR_DL_FRAME_PARMS *frame_parms,
NR_gNB_ULSCH_t **ulsch_gNB,
uint8_t symbol,
uint8_t pilots,
uint8_t is_dmrs_symbol,
unsigned short nb_rb)
{
@@ -302,7 +305,7 @@ void nr_ulsch_scale_channel(int **ul_ch_estimates_ext,
ch_amp = 1024*8; //((pilots) ? (ulsch_gNB[0]->sqrt_rho_b) : (ulsch_gNB[0]->sqrt_rho_a));
LOG_D(PHY,"Scaling PUSCH Chest in OFDM symbol %d by %d, pilots %d nb_rb %d NCP %d symbol %d\n", symbol, ch_amp, pilots, nb_rb, frame_parms->Ncp, symbol);
LOG_D(PHY,"Scaling PUSCH Chest in OFDM symbol %d by %d, pilots %d nb_rb %d NCP %d symbol %d\n", symbol, ch_amp, is_dmrs_symbol, nb_rb, frame_parms->Ncp, symbol);
// printf("Scaling PUSCH Chest in OFDM symbol %d by %d\n",symbol_mod,ch_amp);
ch_amp128 = _mm_set1_epi16(ch_amp); // Q3.13
@@ -312,7 +315,7 @@ void nr_ulsch_scale_channel(int **ul_ch_estimates_ext,
ul_ch128 = (__m128i *)&ul_ch_estimates_ext[aarx][symbol*nb_rb*NR_NB_SC_PER_RB];
if (pilots==1){
if (is_dmrs_symbol==1){
nb_rb = nb_rb>>1;
}
@@ -325,7 +328,7 @@ void nr_ulsch_scale_channel(int **ul_ch_estimates_ext,
ul_ch128[1] = _mm_mulhi_epi16(ul_ch128[1], ch_amp128);
ul_ch128[1] = _mm_slli_epi16(ul_ch128[1], 3);
if (pilots) {
if (is_dmrs_symbol) {
ul_ch128+=2;
} else {
ul_ch128[2] = _mm_mulhi_epi16(ul_ch128[2], ch_amp128);
@@ -446,7 +449,7 @@ void nr_ulsch_channel_compensation(int **rxdataF_ext,
int **rho,
NR_DL_FRAME_PARMS *frame_parms,
unsigned char symbol,
uint8_t pilots,
uint8_t is_dmrs_symbol,
unsigned char mod_order,
unsigned short nb_rb,
unsigned char output_shift)
@@ -549,7 +552,7 @@ void nr_ulsch_channel_compensation(int **rxdataF_ext,
ul_ch_mag128[1] = _mm_mulhi_epi16(ul_ch_mag128[1],QAM_amp128);
ul_ch_mag128[1] = _mm_slli_epi16(ul_ch_mag128[1],1);
if (pilots==0) {
if (is_dmrs_symbol==0) {
mmtmpD0 = _mm_madd_epi16(ul_ch128[2],ul_ch128[2]);
mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
mmtmpD1 = _mm_packs_epi32(mmtmpD0,mmtmpD0);
@@ -568,7 +571,7 @@ void nr_ulsch_channel_compensation(int **rxdataF_ext,
ul_ch_mag128b[1] = _mm_mulhi_epi16(ul_ch_mag128b[1],QAM_amp128b);
ul_ch_mag128b[1] = _mm_slli_epi16(ul_ch_mag128b[1],1);
if (pilots==0) {
if (is_dmrs_symbol==0) {
ul_ch_mag128b[2] = _mm_mulhi_epi16(ul_ch_mag128b[2],QAM_amp128b);
ul_ch_mag128b[2] = _mm_slli_epi16(ul_ch_mag128b[2],1);
}
@@ -616,7 +619,7 @@ void nr_ulsch_channel_compensation(int **rxdataF_ext,
// print_shorts("ch:",ul_ch128+1);
// print_shorts("pack:",rxdataF_comp128+1);
if (pilots==0) {
if (is_dmrs_symbol==0) {
// multiply by conjugated channel
mmtmpD0 = _mm_madd_epi16(ul_ch128[2],rxdataF128[2]);
// mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
@@ -738,7 +741,7 @@ void nr_ulsch_channel_compensation(int **rxdataF_ext,
unsigned short rb;
unsigned char aatx,aarx,symbol_mod,pilots=0;
unsigned char aatx,aarx,symbol_mod,is_dmrs_symbol=0;
int16x4_t *ul_ch128,*ul_ch128_2,*rxdataF128;
int32x4_t mmtmpD0,mmtmpD1,mmtmpD0b,mmtmpD1b;
@@ -756,7 +759,7 @@ void nr_ulsch_channel_compensation(int **rxdataF_ext,
nb_rb=1+(5*nb_rb/6);
}
else {
pilots=1;
is_dmrs_symbol=1;
}
}
@@ -793,7 +796,7 @@ void nr_ulsch_channel_compensation(int **rxdataF_ext,
mmtmpD1 = vmull_s16(ul_ch128[3], ul_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) {
if (is_dmrs_symbol==0) {
mmtmpD0 = vmull_s16(ul_ch128[4], ul_ch128[4]);
mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
mmtmpD1 = vmull_s16(ul_ch128[5], ul_ch128[5]);
@@ -806,7 +809,7 @@ void nr_ulsch_channel_compensation(int **rxdataF_ext,
ul_ch_mag128[0] = vqdmulhq_s16(mmtmpD2,QAM_amp128);
ul_ch_mag128[1] = vqdmulhq_s16(mmtmpD3,QAM_amp128);
if (pilots==0) {
if (is_dmrs_symbol==0) {
ul_ch_mag128b[2] = vqdmulhq_s16(mmtmpD4,QAM_amp128b);
ul_ch_mag128[2] = vqdmulhq_s16(mmtmpD4,QAM_amp128);
}
@@ -843,7 +846,7 @@ void nr_ulsch_channel_compensation(int **rxdataF_ext,
mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
rxdataF_comp128[1] = vzip_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
if (pilots==0) {
if (is_dmrs_symbol==0) {
mmtmpD0 = vmull_s16(ul_ch128[4], rxdataF128[4]);
mmtmpD1 = vmull_s16(ul_ch128[5], rxdataF128[5]);
mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
@@ -971,114 +974,135 @@ void nr_rx_pusch(PHY_VARS_gNB *gNB,
unsigned char harq_pid)
{
uint8_t first_symbol_flag, aarx, aatx, pilots; // pilots, a flag to indicate DMRS REs in current symbol
uint8_t first_symbol_flag, aarx, aatx, dmrs_symbol_flag; // dmrs_symbol_flag, a flag to indicate DMRS REs in current symbol
NR_DL_FRAME_PARMS *frame_parms = &gNB->frame_parms;
nfapi_nr_ul_config_ulsch_pdu_rel15_t *rel15_ul = &gNB->ulsch[UE_id][0]->harq_processes[harq_pid]->ulsch_pdu.ulsch_pdu_rel15;
uint32_t nb_re_pusch, bwp_start_subcarrier;
uint8_t mapping_type;
int avgs;
int avg[4];
pilots = 0;
dmrs_symbol_flag = 0;
first_symbol_flag = 0;
if(symbol == rel15_ul->start_symbol){
gNB->pusch_vars[UE_id]->rxdataF_ext_offset = 0;
first_symbol_flag = 1;
}
mapping_type = gNB->pusch_config.pusch_TimeDomainResourceAllocation[0]->mappingType;
if (symbol == rel15_ul->start_symbol){ // [hna] here it is assumed that first carries 6 DMRS REs (dmrs-type 1)
nb_re_pusch = rel15_ul->number_rbs * 6;
pilots = 1;
} else {
nb_re_pusch = rel15_ul->number_rbs * NR_NB_SC_PER_RB;
pilots = 0;
}
if (mapping_type == typeB) {
bwp_start_subcarrier = (rel15_ul->start_rb*NR_NB_SC_PER_RB + frame_parms->first_carrier_offset) % frame_parms->ofdm_symbol_size;
if(symbol == rel15_ul->start_symbol){
gNB->pusch_vars[UE_id]->rxdataF_ext_offset = 0;
gNB->pusch_vars[UE_id]->dmrs_symbol = 0;
first_symbol_flag = 1;
}
//----------------------------------------------------------
//--------------------- Channel estimation ---------------------
//----------------------------------------------------------
bwp_start_subcarrier = (rel15_ul->start_rb*NR_NB_SC_PER_RB + frame_parms->first_carrier_offset) % frame_parms->ofdm_symbol_size;
if (pilots == 1)
nr_pusch_channel_estimation(gNB,
0,
nr_tti_rx,
0, // p
symbol,
bwp_start_subcarrier,
rel15_ul->number_rbs);
dmrs_symbol_flag = is_dmrs_symbol(symbol,
0,
0,
0,
0,
0,
rel15_ul->number_symbols,
&gNB->dmrs_UplinkConfig,
mapping_type,
frame_parms->ofdm_symbol_size);
//----------------------------------------------------------
//--------------------- RBs extraction ---------------------
//----------------------------------------------------------
nr_ulsch_extract_rbs_single(gNB->common_vars.rxdataF,
gNB->pusch_vars[UE_id]->ul_ch_estimates,
gNB->pusch_vars[UE_id]->rxdataF_ext,
gNB->pusch_vars[UE_id]->ul_ch_estimates_ext,
gNB->pusch_vars[UE_id]->rxdataF_ext_offset,
// rb_alloc, [hna] Resource Allocation Type 1 is assumed only for the moment
symbol,
rel15_ul->start_rb,
rel15_ul->number_rbs,
frame_parms);
if (dmrs_symbol_flag == 1){
nb_re_pusch = rel15_ul->number_rbs * 6;
gNB->pusch_vars[UE_id]->dmrs_symbol = symbol;
} else {
nb_re_pusch = rel15_ul->number_rbs * NR_NB_SC_PER_RB;
}
nr_ulsch_scale_channel(gNB->pusch_vars[UE_id]->ul_ch_estimates_ext,
frame_parms,
gNB->ulsch[UE_id],
symbol,
pilots,
rel15_ul->number_rbs);
if (first_symbol_flag==1) {
//----------------------------------------------------------
//--------------------- Channel estimation ---------------------
//----------------------------------------------------------
nr_ulsch_channel_level(gNB->pusch_vars[UE_id]->ul_ch_estimates_ext,
frame_parms,
avg,
symbol,
nb_re_pusch,
rel15_ul->number_rbs);
avgs = 0;
if (dmrs_symbol_flag == 1)
nr_pusch_channel_estimation(gNB,
0,
nr_tti_rx,
0, // p
symbol,
bwp_start_subcarrier,
rel15_ul->number_rbs);
for (aatx=0;aatx<frame_parms->nb_antennas_tx;aatx++)
for (aarx=0;aarx<frame_parms->nb_antennas_rx;aarx++)
avgs = cmax(avgs,avg[(aatx<<1)+aarx]);
//----------------------------------------------------------
//--------------------- RBs extraction ---------------------
//----------------------------------------------------------
gNB->pusch_vars[UE_id]->log2_maxh = (log2_approx(avgs)/2)+1;
}
nr_ulsch_channel_compensation(gNB->pusch_vars[UE_id]->rxdataF_ext,
nr_ulsch_extract_rbs_single(gNB->common_vars.rxdataF,
gNB->pusch_vars[UE_id]->ul_ch_estimates,
gNB->pusch_vars[UE_id]->rxdataF_ext,
gNB->pusch_vars[UE_id]->ul_ch_estimates_ext,
gNB->pusch_vars[UE_id]->ul_ch_mag0,
gNB->pusch_vars[UE_id]->ul_ch_magb0,
gNB->pusch_vars[UE_id]->rxdataF_comp,
(frame_parms->nb_antennas_tx>1) ? gNB->pusch_vars[UE_id]->rho : NULL,
frame_parms,
gNB->pusch_vars[UE_id]->rxdataF_ext_offset,
// rb_alloc, [hna] Resource Allocation Type 1 is assumed only for the moment
symbol,
pilots,
rel15_ul->Qm,
rel15_ul->start_rb,
rel15_ul->number_rbs,
gNB->pusch_vars[UE_id]->log2_maxh);
frame_parms,
dmrs_symbol_flag,
gNB->pusch_vars[UE_id]->dmrs_symbol);
#ifdef NR_SC_FDMA
nr_idft(&((uint32_t*)gNB->pusch_vars[UE_id]->rxdataF_ext[0])[symbol * rel15_ul->number_rbs * NR_NB_SC_PER_RB], nb_re_pusch);
#endif
nr_ulsch_scale_channel(gNB->pusch_vars[UE_id]->ul_ch_estimates_ext,
frame_parms,
gNB->ulsch[UE_id],
symbol,
dmrs_symbol_flag,
rel15_ul->number_rbs);
//----------------------------------------------------------
//-------------------- LLRs computation --------------------
//----------------------------------------------------------
nr_ulsch_compute_llr(&gNB->pusch_vars[UE_id]->rxdataF_comp[0][symbol * rel15_ul->number_rbs * NR_NB_SC_PER_RB],
gNB->pusch_vars[UE_id]->ul_ch_mag0,
gNB->pusch_vars[UE_id]->ul_ch_magb0,
&gNB->pusch_vars[UE_id]->llr[gNB->pusch_vars[UE_id]->rxdataF_ext_offset * rel15_ul->Qm],
rel15_ul->number_rbs,
nb_re_pusch,
symbol,
rel15_ul->Qm);
gNB->pusch_vars[UE_id]->rxdataF_ext_offset = gNB->pusch_vars[UE_id]->rxdataF_ext_offset + nb_re_pusch;
if (first_symbol_flag==1) {
nr_ulsch_channel_level(gNB->pusch_vars[UE_id]->ul_ch_estimates_ext,
frame_parms,
avg,
symbol,
nb_re_pusch,
rel15_ul->number_rbs);
avgs = 0;
for (aatx=0;aatx<frame_parms->nb_antennas_tx;aatx++)
for (aarx=0;aarx<frame_parms->nb_antennas_rx;aarx++)
avgs = cmax(avgs,avg[(aatx<<1)+aarx]);
gNB->pusch_vars[UE_id]->log2_maxh = (log2_approx(avgs)/2)+1;
}
nr_ulsch_channel_compensation(gNB->pusch_vars[UE_id]->rxdataF_ext,
gNB->pusch_vars[UE_id]->ul_ch_estimates_ext,
gNB->pusch_vars[UE_id]->ul_ch_mag0,
gNB->pusch_vars[UE_id]->ul_ch_magb0,
gNB->pusch_vars[UE_id]->rxdataF_comp,
(frame_parms->nb_antennas_tx>1) ? gNB->pusch_vars[UE_id]->rho : NULL,
frame_parms,
symbol,
dmrs_symbol_flag,
rel15_ul->Qm,
rel15_ul->number_rbs,
gNB->pusch_vars[UE_id]->log2_maxh);
#ifdef NR_SC_FDMA
nr_idft(&((uint32_t*)gNB->pusch_vars[UE_id]->rxdataF_ext[0])[symbol * rel15_ul->number_rbs * NR_NB_SC_PER_RB], nb_re_pusch);
#endif
//----------------------------------------------------------
//-------------------- LLRs computation --------------------
//----------------------------------------------------------
nr_ulsch_compute_llr(&gNB->pusch_vars[UE_id]->rxdataF_comp[0][symbol * rel15_ul->number_rbs * NR_NB_SC_PER_RB],
gNB->pusch_vars[UE_id]->ul_ch_mag0,
gNB->pusch_vars[UE_id]->ul_ch_magb0,
&gNB->pusch_vars[UE_id]->llr[gNB->pusch_vars[UE_id]->rxdataF_ext_offset * rel15_ul->Qm],
rel15_ul->number_rbs,
nb_re_pusch,
symbol,
rel15_ul->Qm);
gNB->pusch_vars[UE_id]->rxdataF_ext_offset = gNB->pusch_vars[UE_id]->rxdataF_ext_offset + nb_re_pusch;
} else {
LOG_E(PHY, "PUSCH mapping type A is not supported \n");
}
}
openair1/PHY/NR_UE_TRANSPORT/nr_ulsch_coding.c
+1 -1
View File
@@ -232,7 +232,7 @@ int nr_ulsch_encoding(NR_UE_ULSCH_t *ulsch,
Ilbrm = 0;
Tbslbrm = 950984; //max tbs
nb_re_dmrs = ulsch->nb_re_dmrs;
length_dmrs = 1;
length_dmrs = ulsch->length_dmrs;
Coderate = 0.0;
///////////
openair1/PHY/NR_UE_TRANSPORT/nr_ulsch_ue.c
+24 -8
View File
@@ -98,8 +98,8 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
int32_t **txdataF;
uint16_t start_sc, start_rb;
int8_t Wf[2], Wt[2], l0, l_prime[2], delta;
uint16_t n_dmrs,code_rate;
uint8_t dmrs_type, length_dmrs;
uint16_t n_dmrs, code_rate, number_dmrs_symbols;
uint8_t dmrs_type;
uint8_t mapping_type;
int ap, start_symbol, Nid_cell, i;
int sample_offsetF, N_RE_prime, N_PRB_oh;
@@ -111,20 +111,36 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
NR_UE_PUSCH *pusch_ue = UE->pusch_vars[thread_id][gNB_id];
num_of_codewords = 1; // tmp assumption
length_dmrs = 1;
n_rnti = 0x1234;
Nid_cell = 0;
N_PRB_oh = 0; // higher layer (RRC) parameter xOverhead in PUSCH-ServingCellConfig
number_dmrs_symbols = 0;
mapping_type = UE->pusch_config.pusch_TimeDomainResourceAllocation[0]->mappingType;
for (cwd_index = 0;cwd_index < num_of_codewords; cwd_index++) {
ulsch_ue = UE->ulsch[thread_id][gNB_id][cwd_index];
harq_process_ul_ue = ulsch_ue->harq_processes[harq_pid];
ulsch_ue->length_dmrs = length_dmrs;
for (i = 0; i < NR_SYMBOLS_PER_SLOT; i++)
number_dmrs_symbols += is_dmrs_symbol(i,
0,
0,
0,
0,
0,
harq_process_ul_ue->number_of_symbols,
&UE->dmrs_UplinkConfig,
mapping_type,
frame_parms->ofdm_symbol_size);
printf("number_dmrs_symbols = %u\n", number_dmrs_symbols);
ulsch_ue->length_dmrs = UE->dmrs_UplinkConfig.pusch_maxLength;
ulsch_ue->rnti = n_rnti;
ulsch_ue->Nid_cell = Nid_cell;
ulsch_ue->nb_re_dmrs = UE->dmrs_UplinkConfig.pusch_maxLength*(UE->dmrs_UplinkConfig.pusch_dmrs_type == pusch_dmrs_type1?6:4);
ulsch_ue->nb_re_dmrs = ((UE->dmrs_UplinkConfig.pusch_dmrs_type == pusch_dmrs_type1)?6:4)*number_dmrs_symbols;
N_RE_prime = NR_NB_SC_PER_RB*harq_process_ul_ue->number_of_symbols - ulsch_ue->nb_re_dmrs - N_PRB_oh;
@@ -213,11 +229,8 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
n_dmrs = (harq_process_ul_ue->nb_rb*ulsch_ue->nb_re_dmrs);
int16_t mod_dmrs[n_dmrs<<1];
dmrs_type = UE->dmrs_UplinkConfig.pusch_dmrs_type;
mapping_type = UE->pusch_config.pusch_TimeDomainResourceAllocation[0]->mappingType;
l0 = get_l0_ul(mapping_type, 2);
nr_modulation(pusch_dmrs[l0][0], n_dmrs*2, DMRS_MOD_ORDER, mod_dmrs); // currently only codeword 0 is modulated. Qm = 2 as DMRS is QPSK modulated
///////////
////////////////////////////////////////////////////////////////////////
@@ -294,6 +307,7 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
k = start_sc;
n = 0;
dmrs_idx = 0;
for (i=0; i<harq_process_ul_ue->nb_rb*NR_NB_SC_PER_RB; i++) {
@@ -314,6 +328,8 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
if (is_dmrs == 1) {
nr_modulation(pusch_dmrs[l][0], n_dmrs*2, DMRS_MOD_ORDER, mod_dmrs); // currently only codeword 0 is modulated. Qm = 2 as DMRS is QPSK modulated
((int16_t*)txdataF[ap])[(sample_offsetF)<<1] = (Wt[l_prime[0]]*Wf[k_prime]*AMP*mod_dmrs[dmrs_idx<<1]) >> 15;
((int16_t*)txdataF[ap])[((sample_offsetF)<<1) + 1] = (Wt[l_prime[0]]*Wf[k_prime]*AMP*mod_dmrs[(dmrs_idx<<1) + 1]) >> 15;
openair1/PHY/defs_gNB.h
+11
View File
@@ -246,6 +246,8 @@ typedef struct {
/// This is needed for PHICH generation which
/// is done after a new scheduling
uint8_t previous_n_DMRS;
/// number of DMRS resource elements in one RB
uint16_t nb_re_dmrs;
//////////////////////////////////////////////////////////////
@@ -414,6 +416,8 @@ typedef struct {
/// \brief llr values.
/// - first index: ? [0..1179743] (hard coded)
int16_t *llr;
// DMRS symbol index, to be updated every DMRS symbol within a slot.
uint8_t dmrs_symbol;
} NR_gNB_PUSCH;
@@ -707,6 +711,8 @@ typedef struct PHY_VARS_gNB_s {
// PUSCH Varaibles
PUSCH_CONFIG_DEDICATED pusch_config_dedicated[NUMBER_OF_UE_MAX];
PUSCH_Config_t pusch_config;
// PUCCH variables
PUCCH_CONFIG_DEDICATED pucch_config_dedicated[NUMBER_OF_UE_MAX];
@@ -722,6 +728,11 @@ typedef struct PHY_VARS_gNB_s {
// SRS Variables
SOUNDINGRS_UL_CONFIG_DEDICATED soundingrs_ul_config_dedicated[NUMBER_OF_UE_MAX];
dmrs_UplinkConfig_t dmrs_UplinkConfig;
dmrs_DownlinkConfig_t dmrs_DownlinkConfig;
uint8_t ncs_cell[20][7];
// Scheduling Request Config
openair1/SCHED_NR/phy_procedures_nr_gNB.c
+20 -1
View File
@@ -224,12 +224,31 @@ void nr_ulsch_procedures(PHY_VARS_gNB *gNB, int frame_rx, int slot_rx, int UE_id
nfapi_nr_ul_config_ulsch_pdu_rel15_t *nfapi_ulsch_pdu_rel15 = &rel15_ul->ulsch_pdu_rel15;
uint8_t ret;
uint8_t l, number_dmrs_symbols = 0;
uint8_t mapping_type;
uint32_t G;
int Nid_cell = 0; // [hna] shouldn't be a local variable (should be signaled)
mapping_type = gNB->pusch_config.pusch_TimeDomainResourceAllocation[0]->mappingType;
gNB->ulsch[UE_id+1][0]->harq_processes[harq_pid]->nb_re_dmrs = 0;
for (l = 0; l < NR_SYMBOLS_PER_SLOT; l++)
number_dmrs_symbols += is_dmrs_symbol(l,
0,
0,
0,
0,
0,
nfapi_ulsch_pdu_rel15->number_symbols,
&gNB->dmrs_UplinkConfig,
mapping_type,
frame_parms->ofdm_symbol_size);
gNB->ulsch[UE_id+1][0]->harq_processes[harq_pid]->nb_re_dmrs = ((gNB->dmrs_UplinkConfig.pusch_dmrs_type == pusch_dmrs_type1)?6:4)*number_dmrs_symbols;
G = nr_get_G(nfapi_ulsch_pdu_rel15->number_rbs,
nfapi_ulsch_pdu_rel15->number_symbols,
nfapi_ulsch_pdu_rel15->nb_re_dmrs,
gNB->ulsch[UE_id+1][0]->harq_processes[harq_pid]->nb_re_dmrs,
nfapi_ulsch_pdu_rel15->length_dmrs,
nfapi_ulsch_pdu_rel15->Qm,
nfapi_ulsch_pdu_rel15->n_layers);