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Extend rfsim to enable muti transmit antennas for gNB+solve beamforming ssb_index 0 when nb_tx>1

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This commit is contained in:
Khodr Saaifan
2020-08-05 19:15:00 +02:00
parent f7dc17ec20
commit 16ab5979e2
5 changed files with 20 additions and 16 deletions
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openair1/PHY/INIT/nr_init_ru.c
+3 -3
View File
@@ -121,9 +121,9 @@ int nr_phy_init_RU(RU_t *ru) {
LOG_E(PHY,"[INIT] %s() RC.nb_nr_L1_inst:%d \n", __FUNCTION__, RC.nb_nr_L1_inst);
int beam_count = 0;
if (ru->nb_log_antennas>1) {
if (ru->nb_tx>1) {//Enable beamforming when nb_tx > 1
for (p=0;p<ru->nb_log_antennas;p++) {
if ((fp->L_ssb >> p) & 0x01)
if ((fp->L_ssb >> (63-p)) & 0x01)//64 bit-map with the MSB @2⁶³ corresponds to SSB ssb_index 0
beam_count++;
}
AssertFatal(ru->nb_bfw==(beam_count*ru->nb_tx),"Number of beam weights from config file is %d while the expected number is %d",ru->nb_bfw,(beam_count*ru->nb_tx));
@@ -131,7 +131,7 @@ int nr_phy_init_RU(RU_t *ru) {
int l_ind = 0;
for (i=0; i<RC.nb_nr_L1_inst; i++) {
for (p=0;p<ru->nb_log_antennas;p++) {
if ((fp->L_ssb >> p) & 0x01) {
if ((fp->L_ssb >> (63-p)) & 0x01) {
ru->beam_weights[i][p] = (int32_t **)malloc16_clear(ru->nb_tx*sizeof(int32_t*));
for (j=0; j<ru->nb_tx; j++) {
ru->beam_weights[i][p][j] = (int32_t *)malloc16_clear(fp->ofdm_symbol_size*sizeof(int32_t));
openair1/PHY/INIT/nr_parms.c
+2 -2
View File
@@ -308,7 +308,7 @@ int nr_init_frame_parms(nfapi_nr_config_request_scf_t* cfg,
int num_tx_ant = (cfg == NULL) ? fp->Lmax : cfg->carrier_config.num_tx_ant.value;
for (int p=0; p<num_tx_ant; p++)
fp->N_ssb += ((fp->L_ssb >> p) & 0x01);
fp->N_ssb += ((fp->L_ssb >> (63-p)) & 0x01);
return 0;
@@ -389,7 +389,7 @@ int nr_init_frame_parms_ue(NR_DL_FRAME_PARMS *fp,
fp->N_ssb = 0;
for (int p=0; p<fp->Lmax; p++)
fp->N_ssb += ((fp->L_ssb >> p) & 0x01);
fp->N_ssb += ((fp->L_ssb >> (63-p)) & 0x01);
return 0;
}
openair1/PHY/MODULATION/beamforming.c
+1 -1
View File
@@ -155,7 +155,7 @@ int nr_beam_precoding(int32_t **txdataF,
memset(&txdataF_BF[aa][symbol*frame_parms->ofdm_symbol_size],0,sizeof(int32_t)*(frame_parms->ofdm_symbol_size));
for (p=0; p<nb_antenna_ports; p++) {
if ((frame_parms->L_ssb >> p) & 0x01) {
if ((frame_parms->L_ssb >> (63-p)) & 0x01) {
multadd_cpx_vector((int16_t*)&txdataF[p][symbol*frame_parms->ofdm_symbol_size],
(int16_t*)beam_weights[p][aa],
(int16_t*)&txdataF_BF[aa][symbol*frame_parms->ofdm_symbol_size],