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putting phy procedures into compact functions (UE side)

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implementing:
- generate_ue_ulsch_params (customized for ulsim only)
- nr_ue_ulsch_procedures
- nr_ue_pusch_common_procedures
This commit is contained in:
Khalid Ahmed
2019-06-04 13:43:19 +02:00
committed by Thomas Schlichter
parent 4a841aa83d
commit 749bb66988
4 changed files with 370 additions and 236 deletions
Download Patch File Download Diff File Expand all files Collapse all files
openair1/PHY/NR_UE_TRANSPORT/nr_transport_proto_ue.h
+22
View File
@@ -1073,6 +1073,28 @@ void pusch_transform_precoding(NR_UE_ULSCH_t *ulsch,
NR_DL_FRAME_PARMS *frame_parms,
int harq_pid);
/** \brief Perform the following functionalities:
- encoding
- scrambling
- modulation
- transform precoding
*/
uint8_t nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
unsigned char harq_pid,
uint8_t slot,
uint8_t thread_id,
int eNB_id);
/** \brief This function does IFFT for PUSCH
*/
uint8_t nr_ue_pusch_common_procedures(PHY_VARS_NR_UE *UE,
uint8_t slot,
uint8_t Nl,
NR_DL_FRAME_PARMS *frame_parms);
uint32_t nr_dlsch_decoding_mthread(PHY_VARS_NR_UE *phy_vars_ue,
openair1/PHY/NR_UE_TRANSPORT/nr_transport_ue.h
+2
View File
@@ -232,6 +232,8 @@ typedef struct {
uint16_t rnti;
/// RNTI type
uint8_t rnti_type;
/// Cell ID
int Nid_cell;
/// f_PUSCH parameter for PUSCH power control
int16_t f_pusch;
/// Po_PUSCH - target output power for PUSCH
openair1/PHY/NR_UE_TRANSPORT/nr_ulsch_ue.c
+233
View File
@@ -30,7 +30,10 @@
* \warning
*/
#include <stdint.h>
#include "PHY/NR_REFSIG/dmrs_nr.h"
#include "PHY/NR_UE_TRANSPORT/nr_transport_ue.h"
#include "PHY/NR_UE_TRANSPORT/nr_transport_proto_ue.h"
#include "PHY/MODULATION/nr_modulation.h"
#include "common/utils/assertions.h"
#include "PHY/NR_TRANSPORT/nr_transport_common_proto.h"
#include "PHY/defs_nr_common.h"
@@ -181,3 +184,233 @@ void pusch_transform_precoding(NR_UE_ULSCH_t *ulsch, NR_DL_FRAME_PARMS *frame_pa
#endif
}
uint8_t nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
unsigned char harq_pid,
uint8_t slot,
uint8_t thread_id,
int eNB_id) {
unsigned int available_bits;
uint8_t mod_order, cwd_index, num_of_codewords;
uint32_t scrambled_output[NR_MAX_NB_CODEWORDS][NR_MAX_PDSCH_ENCODED_LENGTH>>5];
int32_t *mod_symbols[MAX_NUM_NR_RE];
uint32_t ***pusch_dmrs;
int16_t **tx_layers;
int32_t **txdataF;
uint16_t start_sc, start_rb;
int8_t Wf[2], Wt[2], l0, l_prime[2], delta;
uint16_t n_dmrs;
uint8_t dmrs_type;
uint8_t mapping_type;
int ap, start_symbol, i;
int sample_offsetF;
NR_UE_ULSCH_t *ulsch_ue;
NR_UL_UE_HARQ_t *harq_process_ul_ue;
NR_DL_FRAME_PARMS *frame_parms = &UE->frame_parms;
NR_UE_PUSCH *pusch_ue = UE->pusch_vars[thread_id][eNB_id];
num_of_codewords = 1; // tmp assumption
for (cwd_index = 0;cwd_index < num_of_codewords; cwd_index++) {
ulsch_ue = UE->ulsch[thread_id][eNB_id][cwd_index];
harq_process_ul_ue = ulsch_ue->harq_processes[harq_pid];
/////////////////////////ULSCH coding/////////////////////////
///////////
nr_ulsch_encoding(ulsch_ue, frame_parms, harq_pid);
///////////
////////////////////////////////////////////////////////////////////
/////////////////////////ULSCH scrambling/////////////////////////
///////////
mod_order = nr_get_Qm(harq_process_ul_ue->mcs, 1);
available_bits = nr_get_G(harq_process_ul_ue->nb_rb,
ulsch_ue->Nsymb_pusch,
ulsch_ue->nb_re_dmrs,
ulsch_ue->length_dmrs,
mod_order,
1);
memset(scrambled_output[cwd_index], 0, ((available_bits>>5)+1)*sizeof(uint32_t));
nr_pusch_codeword_scrambling(ulsch_ue->g,
available_bits,
ulsch_ue->Nid_cell,
ulsch_ue->rnti,
scrambled_output[cwd_index]); // assume one codeword for the moment
/////////////
//////////////////////////////////////////////////////////////////////////
/////////////////////////ULSCH modulation/////////////////////////
///////////
nr_modulation(scrambled_output[cwd_index], // assume one codeword for the moment
available_bits,
mod_order,
(int16_t *)ulsch_ue->d_mod);
pusch_transform_precoding(ulsch_ue, frame_parms, harq_pid);
///////////
////////////////////////////////////////////////////////////////////////
mod_symbols[cwd_index] = (int32_t *)malloc16((NR_MAX_PUSCH_ENCODED_LENGTH)*sizeof(int32_t*));
memcpy(mod_symbols[cwd_index],ulsch_ue->d_mod,(available_bits/mod_order)*sizeof(int32_t));
}
start_symbol = 14 - ulsch_ue->Nsymb_pusch;
/////////////////////////DMRS Modulation/////////////////////////
///////////
pusch_dmrs = UE->nr_gold_pusch_dmrs[slot];
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
///////////
////////////////////////////////////////////////////////////////////////
/////////////////////////ULSCH layer mapping/////////////////////////
///////////
tx_layers = (int16_t **)pusch_ue->txdataF_layers;
nr_layer_mapping((int16_t **)mod_symbols,
harq_process_ul_ue->Nl,
available_bits/mod_order,
tx_layers);
///////////
////////////////////////////////////////////////////////////////////////
/////////////////////////ULSCH RE mapping/////////////////////////
///////////
txdataF = UE->common_vars.txdataF;
start_rb = harq_process_ul_ue->first_rb;
start_sc = frame_parms->first_carrier_offset + start_rb*NR_NB_SC_PER_RB;
if (start_sc >= frame_parms->ofdm_symbol_size)
start_sc -= frame_parms->ofdm_symbol_size;
for (ap=0; ap<harq_process_ul_ue->Nl; ap++) {
// DMRS params for this ap
get_Wt(Wt, ap, dmrs_type);
get_Wf(Wf, ap, dmrs_type);
delta = get_delta(ap, dmrs_type);
l_prime[0] = 0; // single symbol ap 0
uint8_t dmrs_symbol = l0+l_prime[0]; // Assuming dmrs-AdditionalPosition = 0
uint8_t k_prime=0, l;
uint16_t m=0, n=0, dmrs_idx=0, k=0;
for (l=start_symbol; l<start_symbol+ulsch_ue->Nsymb_pusch; l++) {
k = start_sc;
for (i=0; i<harq_process_ul_ue->nb_rb*NR_NB_SC_PER_RB; i++) {
sample_offsetF = l*frame_parms->ofdm_symbol_size + k;
if ((l == dmrs_symbol) && (k == ((start_sc+get_dmrs_freq_idx_ul(n, k_prime, delta, dmrs_type))%(frame_parms->ofdm_symbol_size)))) {
((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;
#ifdef DEBUG_PUSCH_MAPPING
printf("dmrs_idx %d\t l %d \t k %d \t k_prime %d \t n %d \t txdataF: %d %d\n",
dmrs_idx, l, k, k_prime, n, ((int16_t*)txdataF[ap])[(sample_offsetF)<<1],
((int16_t*)txdataF[ap])[((sample_offsetF)<<1) + 1]);
#endif
dmrs_idx++;
k_prime++;
k_prime&=1;
n+=(k_prime)?0:1;
}
else {
((int16_t*)txdataF[ap])[(sample_offsetF)<<1] = (AMP * tx_layers[ap][m<<1]) >> 15;
((int16_t*)txdataF[ap])[((sample_offsetF)<<1) + 1] = (AMP * tx_layers[ap][(m<<1) + 1]) >> 15;
#ifdef DEBUG_PUSCH_MAPPING
printf("m %d\t l %d \t k %d \t txdataF: %d %d\n",
m, l, k, ((int16_t*)txdataF[ap])[(sample_offsetF)<<1],
((int16_t*)txdataF[ap])[((sample_offsetF)<<1) + 1]);
#endif
m++;
}
if (++k >= frame_parms->ofdm_symbol_size)
k -= frame_parms->ofdm_symbol_size;
}
}
}
///////////
////////////////////////////////////////////////////////////////////////
return 0;
}
uint8_t nr_ue_pusch_common_procedures(PHY_VARS_NR_UE *UE,
uint8_t slot,
uint8_t Nl,
NR_DL_FRAME_PARMS *frame_parms) {
int tx_offset, ap;
int32_t **txdata;
int32_t **txdataF;
/////////////////////////IFFT///////////////////////
///////////
tx_offset = slot*frame_parms->samples_per_slot;
txdata = UE->common_vars.txdata;
txdataF = UE->common_vars.txdataF;
for (ap = 0; ap < Nl; ap++) {
if (frame_parms->Ncp == 1) { // extended cyclic prefix
PHY_ofdm_mod(txdataF[ap],
&txdata[ap][tx_offset],
frame_parms->ofdm_symbol_size,
12,
frame_parms->nb_prefix_samples,
CYCLIC_PREFIX);
} else { // normal cyclic prefix
nr_normal_prefix_mod(txdataF[ap],
&txdata[ap][tx_offset],
14,
frame_parms);
}
}
///////////
////////////////////////////////////////////////////
return 0;
}
openair1/SIMULATION/NR_PHY/ulsim.c
+113 -236
View File
@@ -64,6 +64,21 @@ RAN_CONTEXT_t RC;
double cpuf;
typedef struct ulsim_params_s {
uint16_t Nid_cell;
uint8_t nb_codewords;
uint8_t Imcs;
uint16_t nb_symb_sch;
int eNB_id;
int nb_rb;
int first_rb;
uint8_t length_dmrs;
uint8_t Nl;
uint8_t rvidx;
uint8_t UE_id;
uint16_t n_rnti;
} ulsim_params_t;
// dummy functions
int nfapi_mode = 0;
int oai_nfapi_hi_dci0_req(nfapi_hi_dci0_request_t *hi_dci0_req) {
@@ -97,6 +112,57 @@ NR_IF_Module_init(int Mod_id) {
return (NULL);
}
int generate_ue_ulsch_params(PHY_VARS_NR_UE *UE,
ulsim_params_t *ulsim_params,
uint8_t thread_id,
unsigned char harq_pid,
unsigned char *test_input){
int N_PRB_oh, N_RE_prime, cwd_idx;
NR_UE_ULSCH_t *ulsch_ue;
NR_UL_UE_HARQ_t *harq_process_ul_ue;
for (cwd_idx = 0;cwd_idx < 1;cwd_idx++){
ulsch_ue = UE->ulsch[thread_id][ulsim_params->eNB_id][cwd_idx];
harq_process_ul_ue = ulsch_ue->harq_processes[harq_pid];
ulsch_ue->length_dmrs = ulsim_params->length_dmrs;
ulsch_ue->rnti = ulsim_params->n_rnti;
ulsch_ue->Nid_cell = ulsim_params->Nid_cell;
ulsch_ue->Nsc_pusch = ulsim_params->nb_rb*NR_NB_SC_PER_RB;
ulsch_ue->Nsymb_pusch = ulsim_params->nb_symb_sch;
ulsch_ue->nb_re_dmrs = UE->dmrs_UplinkConfig.pusch_maxLength*(UE->dmrs_UplinkConfig.pusch_dmrs_type == pusch_dmrs_type1)?6:4;
N_PRB_oh = 0; // higher layer (RRC) parameter xOverhead in PUSCH-ServingCellConfig
N_RE_prime = NR_NB_SC_PER_RB*ulsim_params->nb_symb_sch - ulsch_ue->nb_re_dmrs - N_PRB_oh;
if (harq_process_ul_ue) {
harq_process_ul_ue->mcs = ulsim_params->Imcs;
harq_process_ul_ue->Nl = ulsim_params->Nl;
harq_process_ul_ue->nb_rb = ulsim_params->nb_rb;
harq_process_ul_ue->first_rb = ulsim_params->first_rb;
harq_process_ul_ue->number_of_symbols = ulsim_params->nb_symb_sch;
harq_process_ul_ue->num_of_mod_symbols = N_RE_prime*ulsim_params->nb_rb*ulsim_params->nb_codewords;
harq_process_ul_ue->rvidx = ulsim_params->rvidx;
harq_process_ul_ue->a = test_input;
harq_process_ul_ue->TBS = nr_compute_tbs(ulsim_params->Imcs,
ulsim_params->nb_rb,
ulsim_params->nb_symb_sch,
ulsch_ue->nb_re_dmrs,
ulsim_params->length_dmrs,
ulsim_params->Nl);
}
}
return 0;
}
void exit_function(const char *file, const char *function, const int line, const char *s) {
const char *msg = s == NULL ? "no comment" : s;
printf("Exiting at: %s:%d %s(), %s\n", file, line, function, msg);
@@ -147,7 +213,8 @@ int main(int argc, char **argv) {
//int8_t interf1 = -21, interf2 = -21;
FILE *input_fd = NULL;
SCM_t channel_model = AWGN; //Rayleigh1_anticorr;
uint16_t N_RB_DL = 217, N_RB_UL = 217, mu = 1;
ulsim_params_t ulsim_params;
uint16_t N_RB_DL = 106, N_RB_UL = 106, mu = 1;
//unsigned char frame_type = 0;
int frame = 0, subframe = 0;
int frame_length_complex_samples;
@@ -158,14 +225,13 @@ int main(int argc, char **argv) {
int loglvl = OAILOG_WARNING;
uint64_t SSB_positions=0x01;
uint16_t nb_symb_sch = 12;
int start_symbol = 14 - nb_symb_sch;
uint16_t nb_rb = 50;
uint8_t Imcs = 9;
int eNB_id = 0;
int ap;
int tx_offset;
int sample_offsetF;
double txlev;
int start_rb = 0;
cpuf = get_cpu_freq_GHz();
@@ -430,34 +496,34 @@ int main(int argc, char **argv) {
}
}
ulsim_params.Nid_cell = Nid_cell;
ulsim_params.nb_codewords = nb_codewords;
ulsim_params.Imcs = Imcs;
ulsim_params.nb_symb_sch = nb_symb_sch;
ulsim_params.eNB_id = eNB_id;
ulsim_params.nb_rb = nb_rb;
ulsim_params.first_rb = start_rb;
ulsim_params.length_dmrs = 1;
ulsim_params.Nl = 1;
ulsim_params.rvidx = 0;
ulsim_params.UE_id = 0;
ulsim_params.n_rnti = n_rnti;
unsigned char harq_pid = 0;
uint8_t is_crnti = 0, llr8_flag = 0;
unsigned int TBS = 8424;
unsigned int available_bits;
uint8_t nb_re_dmrs = UE->dmrs_UplinkConfig.pusch_maxLength*(UE->dmrs_UplinkConfig.pusch_dmrs_type == pusch_dmrs_type1)?6:4;
uint16_t length_dmrs = 1;
uint8_t N_PRB_oh;
uint16_t N_RE_prime;
unsigned char mod_order;
uint8_t Nl = 1;
uint8_t rvidx = 0;
uint8_t UE_id = 0;
uint8_t cwd;
uint16_t start_sc, start_rb;
int8_t Wf[2], Wt[2], l0, l_prime[2], delta;
uint32_t ***pusch_dmrs;
NR_gNB_ULSCH_t *ulsch_gNB = gNB->ulsch[UE_id+1][0]; // "+1" because first element in ulsch is for RA
NR_gNB_ULSCH_t *ulsch_gNB = gNB->ulsch[ulsim_params.UE_id+1][0];
nfapi_nr_ul_config_ulsch_pdu_rel15_t *rel15_ul = &ulsch_gNB->harq_processes[harq_pid]->ulsch_pdu.ulsch_pdu_rel15;
NR_UE_PUSCH *pusch_ue = UE->pusch_vars[0][eNB_id];
NR_UE_ULSCH_t **ulsch_ue = UE->ulsch[0][0];
NR_UL_UE_HARQ_t *harq_process_ul_ue;
mod_order = nr_get_Qm(Imcs, 1);
available_bits = nr_get_G(nb_rb, nb_symb_sch, nb_re_dmrs, length_dmrs, mod_order, 1);
TBS = nr_compute_tbs(Imcs, nb_rb, nb_symb_sch, nb_re_dmrs, length_dmrs, Nl);
TBS = nr_compute_tbs(Imcs, nb_rb, nb_symb_sch, nb_re_dmrs, length_dmrs, ulsim_params.Nl);
printf("available bits %d TBS %d mod_order %d\n", available_bits, TBS, mod_order);
@@ -466,8 +532,8 @@ int main(int argc, char **argv) {
rel15_ul->number_symbols = nb_symb_sch;
rel15_ul->Qm = mod_order;
rel15_ul->mcs = Imcs;
rel15_ul->rv = rvidx;
rel15_ul->n_layers = Nl;
rel15_ul->rv = ulsim_params.rvidx;
rel15_ul->n_layers = ulsim_params.Nl;
///////////////////////////////////////////////////
@@ -475,7 +541,6 @@ int main(int argc, char **argv) {
short *channel_output_fixed = malloc16(sizeof(short) * 16 * 68 * 384);
short *channel_output_uncoded = malloc16(sizeof(unsigned short) * 16 * 68 * 384);
uint32_t scrambled_output[NR_MAX_NB_CODEWORDS][NR_MAX_PDSCH_ENCODED_LENGTH>>5];
unsigned char *estimated_output_bit;
unsigned char *test_input_bit;
unsigned char *test_input;
@@ -486,234 +551,46 @@ int main(int argc, char **argv) {
uint32_t errors_scrambling;
uint32_t scrambling_index;
uint8_t symbol;
int16_t **tx_layers;
int32_t *mod_symbols[MAX_NUM_NR_RE];
uint16_t n_dmrs;
uint8_t dmrs_type;
uint8_t mapping_type;
int amp;
uint32_t scrambled_output[NR_MAX_NB_CODEWORDS][NR_MAX_PDSCH_ENCODED_LENGTH>>5];
test_input = (unsigned char *) malloc16(sizeof(unsigned char) * TBS / 8);
test_input_bit = (unsigned char *) malloc16(sizeof(unsigned char) * 16 * 68 * 384);
estimated_output_bit = (unsigned char *) malloc16(sizeof(unsigned char) * 16 * 68 * 384);
int UE_id = ulsim_params.UE_id;
/////////////////////////phy_procedures_nr_ue_TX///////////////////////
///////////
for (i = 0; i < TBS / 8; i++)
test_input[i] = 1;//(unsigned char) rand();
test_input[i] = (unsigned char) rand();
for (cwd=0; cwd<nb_codewords; cwd++) {
/////////////////////////[adk] preparing NR_UE_ULSCH_t parameters///////////////////////// A HOT FIX until creating nfapi_nr_ul_config_ulsch_pdu_rel15_t
///////////
ulsch_ue[cwd]->nb_re_dmrs = nb_re_dmrs;
ulsch_ue[cwd]->length_dmrs = length_dmrs;
ulsch_ue[cwd]->rnti = n_rnti;
ulsch_ue[cwd]->Nsc_pusch = nb_rb*NR_NB_SC_PER_RB;
ulsch_ue[cwd]->Nsymb_pusch = nb_symb_sch;
///////////
////////////////////////////////////////////////////////////////////////////////////////////
generate_ue_ulsch_params(UE,
&ulsim_params,
0,
harq_pid,
test_input);
/////////////////////////[adk] preparing UL harq_process parameters/////////////////////////
///////////
harq_process_ul_ue = ulsch_ue[cwd]->harq_processes[harq_pid];
N_PRB_oh = 0; // higher layer (RRC) parameter xOverhead in PUSCH-ServingCellConfig
N_RE_prime = NR_NB_SC_PER_RB*nb_symb_sch - nb_re_dmrs - N_PRB_oh;
nr_ue_ulsch_procedures(UE,
harq_pid,
slot,
0,
eNB_id);
if (harq_process_ul_ue) {
harq_process_ul_ue->mcs = Imcs;
harq_process_ul_ue->Nl = Nl;
harq_process_ul_ue->nb_rb = nb_rb;
harq_process_ul_ue->number_of_symbols = nb_symb_sch;
harq_process_ul_ue->num_of_mod_symbols = N_RE_prime*nb_rb*nb_codewords;
harq_process_ul_ue->rvidx = rvidx;
harq_process_ul_ue->TBS = TBS;
harq_process_ul_ue->a = &test_input[0];
}
///////////
////////////////////////////////////////////////////////////////////////////////////////////
#ifdef DEBUG_ULSCHSIM
for (i = 0; i < TBS / 8; i++) printf("test_input[i]=%d \n",test_input[i]);
#endif
/////////////////////////ULSCH coding/////////////////////////
///////////
if (input_fd == NULL) {
nr_ulsch_encoding(ulsch_ue[cwd], frame_parms, harq_pid);
}
nr_ue_pusch_common_procedures(UE,
slot,
ulsim_params.Nl,
&UE->frame_parms);
///////////
////////////////////////////////////////////////////////////////////
/////////////////////////ULSCH scrambling/////////////////////////
///////////
memset(scrambled_output[cwd], 0, ((available_bits>>5)+1)*sizeof(uint32_t));
nr_pusch_codeword_scrambling(ulsch_ue[cwd]->g,
available_bits,
Nid_cell,
ulsch_ue[cwd]->rnti,
scrambled_output[cwd]); // assume one codeword for the moment
/////////////
//////////////////////////////////////////////////////////////////////////
/////////////////////////ULSCH modulation/////////////////////////
///////////
nr_modulation(scrambled_output[cwd], // assume one codeword for the moment
available_bits,
mod_order,
(int16_t *)ulsch_ue[cwd]->d_mod);
pusch_transform_precoding(ulsch_ue[cwd], frame_parms, harq_pid);
///////////
////////////////////////////////////////////////////////////////////////
mod_symbols[cwd] = (int32_t *)malloc16((NR_MAX_PUSCH_ENCODED_LENGTH)*sizeof(int32_t*));
memcpy(mod_symbols[cwd],ulsch_ue[cwd]->d_mod,(available_bits/mod_order)*sizeof(int32_t));
}
/////////////////////////DMRS Modulation/////////////////////////
///////////
pusch_dmrs = UE->nr_gold_pusch_dmrs[slot];
n_dmrs = (nb_rb*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
///////////
////////////////////////////////////////////////////////////////////////
/////////////////////////ULSCH layer mapping/////////////////////////
///////////
tx_layers = (int16_t **)pusch_ue->txdataF_layers;
nr_layer_mapping((int16_t **)mod_symbols,
harq_process_ul_ue->Nl,
available_bits/mod_order,
tx_layers);
///////////
////////////////////////////////////////////////////////////////////////
/////////////////////////ULSCH RE mapping/////////////////////////
///////////
txdataF = UE->common_vars.txdataF;
amp = AMP;
start_rb = 90;
start_sc = frame_parms->first_carrier_offset + start_rb*NR_NB_SC_PER_RB;
if (start_sc >= frame_parms->ofdm_symbol_size)
start_sc -= frame_parms->ofdm_symbol_size;
for (ap=0; ap<harq_process_ul_ue->Nl; ap++) {
// DMRS params for this ap
get_Wt(Wt, ap, dmrs_type);
get_Wf(Wf, ap, dmrs_type);
delta = get_delta(ap, dmrs_type);
l_prime[0] = 0; // single symbol ap 0
uint8_t dmrs_symbol = l0+l_prime[0]; // Assuming dmrs-AdditionalPosition = 0
uint8_t k_prime=0, l;
uint16_t m=0, n=0, dmrs_idx=0, k=0;
for (l=start_symbol; l<start_symbol+nb_symb_sch; l++) {
k = start_sc;
for (i=0; i<nb_rb*NR_NB_SC_PER_RB; i++) {
sample_offsetF = l*frame_parms->ofdm_symbol_size + k;
if ((l == dmrs_symbol) && (k == ((start_sc+get_dmrs_freq_idx_ul(n, k_prime, delta, dmrs_type))%(frame_parms->ofdm_symbol_size)))) {
((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;
#ifdef DEBUG_PUSCH_MAPPING
printf("dmrs_idx %d\t l %d \t k %d \t k_prime %d \t n %d \t txdataF: %d %d\n",
dmrs_idx, l, k, k_prime, n, ((int16_t*)txdataF[ap])[(sample_offsetF)<<1],
((int16_t*)txdataF[ap])[((sample_offsetF)<<1) + 1]);
#endif
dmrs_idx++;
k_prime++;
k_prime&=1;
n+=(k_prime)?0:1;
}
else {
((int16_t*)txdataF[ap])[(sample_offsetF)<<1] = (amp * tx_layers[ap][m<<1]) >> 15;
((int16_t*)txdataF[ap])[((sample_offsetF)<<1) + 1] = (amp * tx_layers[ap][(m<<1) + 1]) >> 15;
#ifdef DEBUG_PUSCH_MAPPING
printf("m %d\t l %d \t k %d \t txdataF: %d %d\n",
m, l, k, ((int16_t*)txdataF[ap])[(sample_offsetF)<<1],
((int16_t*)txdataF[ap])[((sample_offsetF)<<1) + 1]);
#endif
m++;
}
if (++k >= frame_parms->ofdm_symbol_size)
k -= frame_parms->ofdm_symbol_size;
}
}
}
///////////
////////////////////////////////////////////////////////////////////////
/////////////////////////IFFT///////////////////////
///////////
////////////////////////////////////////////////////
tx_offset = slot*frame_parms->samples_per_slot;
txdata = UE->common_vars.txdata;
for (ap=0; ap<harq_process_ul_ue->Nl; ap++) {
if (frame_parms->Ncp == 1) { // extended cyclic prefix
PHY_ofdm_mod(txdataF[ap],
&txdata[ap][tx_offset],
frame_parms->ofdm_symbol_size,
12,
frame_parms->nb_prefix_samples,
CYCLIC_PREFIX);
} else { // normal cyclic prefix
nr_normal_prefix_mod(txdataF[ap],
&txdata[ap][tx_offset],
14,
frame_parms);
}
}
///////////
////////////////////////////////////////////////////
txdataF = UE->common_vars.txdataF;
for (i=0; i<frame_length_complex_samples; i++) {
for (ap=0; ap<frame_parms->nb_antennas_tx; ap++) {
@@ -751,8 +628,8 @@ int main(int argc, char **argv) {
for (i=0; i<frame_length_complex_samples; i++) {
for (ap=0; ap<frame_parms->nb_antennas_rx; ap++) {
((short*) gNB->common_vars.rxdata[ap])[2*i] = (r_re[ap][i] + (int16_t)(sqrt(sigma2/2)*gaussdouble(0.0,1.0)*(double)amp)); // convert to fixed point
((short*) gNB->common_vars.rxdata[ap])[2*i+1] = (r_im[ap][i] + (int16_t)(sqrt(sigma2/2)*gaussdouble(0.0,1.0)*(double)amp));
((short*) gNB->common_vars.rxdata[ap])[2*i] = (r_re[ap][i] + (int16_t)(sqrt(sigma2/2)*gaussdouble(0.0,1.0)*(double)AMP)); // convert to fixed point
((short*) gNB->common_vars.rxdata[ap])[2*i+1] = (r_im[ap][i] + (int16_t)(sqrt(sigma2/2)*gaussdouble(0.0,1.0)*(double)AMP));
}
}
@@ -897,7 +774,7 @@ int main(int argc, char **argv) {
symbol,
start_rb,
nb_rb,
frame_parms) ;
frame_parms);
for(i = 0; i < nb_re; i++)
{