Commit e993a59d authored by sfn's avatar sfn Committed by Thomas Schlichter

Make use of gNB precoding matrix for PDSCH layer precoding

parent 0517b973
This diff is collapsed.
......@@ -801,3 +801,18 @@ int nr_layer_precoder(int16_t **datatx_F_precoding, char *prec_matrix, uint8_t n
/* ((int16_t *)precodatatx_F)[0] = (int16_t)((((int16_t *)precodatatx_F)[0]*ONE_OVER_SQRT2_Q15)>>15);
((int16_t *)precodatatx_F)[1] = (int16_t)((((int16_t *)precodatatx_F)[1]*ONE_OVER_SQRT2_Q15)>>15);*/
}
int nr_layer_precoder_cm(int16_t **datatx_F_precoding, int *prec_matrix, uint8_t n_layers, int32_t re_offset)
{
int32_t precodatatx_F = 0;
for (int al = 0; al<n_layers; al++) {
int16_t antenna_re = datatx_F_precoding[al][re_offset<<1];
int16_t antenna_im = datatx_F_precoding[al][(re_offset<<1) +1];
//printf("antenna precoding: %d %d\n",((int16_t *)&prec_matrix[al])[0],((int16_t *)&prec_matrix[al])[1]);
((int16_t *) &precodatatx_F)[0] += (int16_t)(((int32_t)(antenna_re*(((int16_t *)&prec_matrix[al])[0])) - (int32_t)(antenna_im* (((int16_t *)&prec_matrix[al])[1])))>>15);
((int16_t *) &precodatatx_F)[1] += (int16_t)(((int32_t)(antenna_re*(((int16_t *)&prec_matrix[al])[1])) + (int32_t)(antenna_im* (((int16_t *)&prec_matrix[al])[0])))>>15);
}
return precodatatx_F;
}
......@@ -135,4 +135,9 @@ int nr_layer_precoder(int16_t **datatx_F_precoding,
char *prec_matrix,
uint8_t n_layers,
int32_t re_offset);
int nr_layer_precoder_cm(int16_t **datatx_F_precoding,
int *prec_matrix,
uint8_t n_layers,
int32_t re_offset);
#endif
......@@ -459,47 +459,38 @@ void nr_generate_pdsch(processingData_L1tx_t *msgTx,
}
}
else {
//get the precoding matrix weights:
char *W_prec;
switch (frame_parms->nb_antennas_tx) {
case 1://1 antenna port
W_prec = nr_W_1l_2p[pmi][ap];
break;
case 2://2 antenna ports
if (rel15->nrOfLayers == 1)//1 layer
W_prec = nr_W_1l_2p[pmi][ap];
else//2 layers
W_prec = nr_W_2l_2p[pmi][ap];
break;
case 4://4 antenna ports
if (rel15->nrOfLayers == 1)//1 layer
W_prec = nr_W_1l_4p[pmi][ap];
else if (rel15->nrOfLayers == 2)//2 layers
W_prec = nr_W_2l_4p[pmi][ap];
else if (rel15->nrOfLayers == 3)//3 layers
W_prec = nr_W_3l_4p[pmi][ap];
else//4 layers
W_prec = nr_W_4l_4p[pmi][ap];
break;
default:
LOG_D(PHY,"Precoding 1,2, or 4 antenna ports are currently supported\n");
W_prec = nr_W_1l_2p[pmi][ap];
break;
}
for (int i=0; i<NR_NB_SC_PER_RB; i++) {
int32_t re_offset = l*frame_parms->ofdm_symbol_size + k;
int32_t precodatatx_F = nr_layer_precoder(txdataF_precoding, W_prec, rel15->nrOfLayers, re_offset+txdataF_offset);
((int16_t*)txdataF[ap])[(re_offset<<1) + (2*txdataF_offset)] = ((int16_t *) &precodatatx_F)[0];
((int16_t*)txdataF[ap])[(re_offset<<1) + 1 + (2*txdataF_offset)] = ((int16_t *) &precodatatx_F)[1];
#ifdef DEBUG_DLSCH_MAPPING
printf("antenna %d\t l %d \t k %d \t txdataF: %d %d\n",
ap, l, k, ((int16_t*)txdataF[ap])[(re_offset<<1) + (2*txdataF_offset)],
((int16_t*)txdataF[ap])[(re_offset<<1) + 1 + (2*txdataF_offset)]);
#endif
if (++k >= frame_parms->ofdm_symbol_size) {
if(frame_parms->nb_antennas_tx==1){//no precoding matrix defined
memcpy((void*)&txdataF[ap][l*frame_parms->ofdm_symbol_size + txdataF_offset + k],
(void*)&txdataF_precoding[ap][2*(l*frame_parms->ofdm_symbol_size + txdataF_offset+ k)],
NR_NB_SC_PER_RB*sizeof(int32_t));
k += NR_NB_SC_PER_RB;
if (k >= frame_parms->ofdm_symbol_size) {
k -= frame_parms->ofdm_symbol_size;
}
}
else {
//get the precoding matrix weights:
int32_t **mat = gNB->nr_mimo_precoding_matrix[rel15->nrOfLayers-1];
//i_row =0,...,dl_antenna_port
//j_col =0,...,nrOfLayers
//mat[pmi][i_rows*2+j_col]
int *W_prec;
W_prec = (int32_t *)&mat[pmi][ap*rel15->nrOfLayers];
for (int i=0; i<NR_NB_SC_PER_RB; i++) {
int32_t re_offset = l*frame_parms->ofdm_symbol_size + k;
int32_t precodatatx_F = nr_layer_precoder_cm(txdataF_precoding, W_prec, rel15->nrOfLayers, re_offset+txdataF_offset);
((int16_t*)txdataF[ap])[(re_offset<<1) + (2*txdataF_offset)] = ((int16_t *) &precodatatx_F)[0];
((int16_t*)txdataF[ap])[(re_offset<<1) + 1 + (2*txdataF_offset)] = ((int16_t *) &precodatatx_F)[1];
#ifdef DEBUG_DLSCH_MAPPING
printf("antenna %d\t l %d \t k %d \t txdataF: %d %d\n",
ap, l, k, ((int16_t*)txdataF[ap])[(re_offset<<1) + (2*txdataF_offset)],
((int16_t*)txdataF[ap])[(re_offset<<1) + 1 + (2*txdataF_offset)]);
#endif
if (++k >= frame_parms->ofdm_symbol_size) {
k -= frame_parms->ofdm_symbol_size;
}
}
}
}
} //RB loop
} // symbol loop
......
......@@ -805,7 +805,7 @@ typedef struct PHY_VARS_gNB_s {
uint32_t ****nr_gold_pdsch_dmrs;
/// PDSCH codebook I precoding LUTs
int32_t **nr_mimo_precoding_matrix;
int32_t ***nr_mimo_precoding_matrix;
/// PUSCH DMRS
uint32_t ****nr_gold_pusch_dmrs;
......
......@@ -794,6 +794,7 @@ int main(int argc, char **argv)
// rrc_mac_config_req_gNB
gNB_mac->pre_processor_dl = nr_dlsim_preprocessor;
phy_init_nr_gNB(gNB,0,1);
mac_init_codebook_gNB(gNB,gNB_mac);
N_RB_DL = gNB->frame_parms.N_RB_DL;
NR_UE_info_t *UE_info = &RC.nrmac[0]->UE_info;
UE_info->num_UEs=1;
......
......@@ -1156,7 +1156,7 @@ void fill_default_secondaryCellGroup(NR_ServingCellConfigCommon_t *servingcellco
csi_MeasConfig->csi_ReportConfigToAddModList = calloc(1,sizeof(*csi_MeasConfig->csi_ReportConfigToAddModList));
csi_MeasConfig->csi_ReportConfigToReleaseList = NULL;
if (do_csirs && dl_antenna_ports > 1) {
if (dl_antenna_ports > 1) {/*do_csirs&&*/
NR_CSI_ReportConfig_t *csirep1 = calloc(1,sizeof(*csirep1));
csirep1->reportConfigId=0;
csirep1->carrier=NULL;
......@@ -1208,8 +1208,19 @@ void fill_default_secondaryCellGroup(NR_ServingCellConfigCommon_t *servingcellco
NR_CodebookConfig__codebookType__type1__subType__typeI_SinglePanel__nrOfAntennaPorts_PR_moreThanTwo;
csirep1->codebookConfig->codebookType.choice.type1->subType.choice.typeI_SinglePanel->nrOfAntennaPorts.choice.moreThanTwo=
calloc(1,sizeof(*csirep1->codebookConfig->codebookType.choice.type1->subType.choice.typeI_SinglePanel->nrOfAntennaPorts.choice.moreThanTwo));
if(dl_antenna_ports == 4)
csirep1->codebookConfig->codebookType.choice.type1->subType.choice.typeI_SinglePanel->nrOfAntennaPorts.choice.moreThanTwo->n1_n2.present=
NR_CodebookConfig__codebookType__type1__subType__typeI_SinglePanel__nrOfAntennaPorts__moreThanTwo__n1_n2_PR_three_two_TypeI_SinglePanel_Restriction;
NR_CodebookConfig__codebookType__type1__subType__typeI_SinglePanel__nrOfAntennaPorts__moreThanTwo__n1_n2_PR_two_one_TypeI_SinglePanel_Restriction;
else if(dl_antenna_ports == 8)
csirep1->codebookConfig->codebookType.choice.type1->subType.choice.typeI_SinglePanel->nrOfAntennaPorts.choice.moreThanTwo->n1_n2.present=
NR_CodebookConfig__codebookType__type1__subType__typeI_SinglePanel__nrOfAntennaPorts__moreThanTwo__n1_n2_PR_four_one_TypeI_SinglePanel_Restriction;
else if(dl_antenna_ports == 12)
csirep1->codebookConfig->codebookType.choice.type1->subType.choice.typeI_SinglePanel->nrOfAntennaPorts.choice.moreThanTwo->n1_n2.present=
NR_CodebookConfig__codebookType__type1__subType__typeI_SinglePanel__nrOfAntennaPorts__moreThanTwo__n1_n2_PR_six_one_TypeI_SinglePanel_Restriction;
else//default
csirep1->codebookConfig->codebookType.choice.type1->subType.choice.typeI_SinglePanel->nrOfAntennaPorts.choice.moreThanTwo->n1_n2.present=
NR_CodebookConfig__codebookType__type1__subType__typeI_SinglePanel__nrOfAntennaPorts__moreThanTwo__n1_n2_PR_two_one_TypeI_SinglePanel_Restriction;
/*csirep1->codebookConfig->codebookType.choice.type1->subType.choice.typeI_SinglePanel->nrOfAntennaPorts.choice.moreThanTwo->n1_n2.choice.two_one_TypeI_SinglePanel_Restriction.size=1;
csirep1->codebookConfig->codebookType.choice.type1->subType.choice.typeI_SinglePanel->nrOfAntennaPorts.choice.moreThanTwo->n1_n2.choice.two_one_TypeI_SinglePanel_Restriction.bits_unused=1;
csirep1->codebookConfig->codebookType.choice.type1->subType.choice.typeI_SinglePanel->nrOfAntennaPorts.choice.moreThanTwo->n1_n2.choice.two_one_TypeI_SinglePanel_Restriction.buf=malloc(1);
......
......@@ -239,6 +239,8 @@ RUs = (
#bf_weights = [0x00007fff, 0x0000,0x0000, 0x0000];
## beamforming 2x2 matrix:
#bf_weights = [0x00007fff, 0x00000000, 0x00000000, 0x00007fff];
## beamforming 2x4 matrix:
#bf_weights = [0x00007fff, 0x0000, 0x0000, 0x00007fff, 0x0000, 0x0000, 0x0000, 0x0000];
## beamforming 4x4 matrix:
#bf_weights = [0x00007fff, 0x0000, 0x0000, 0x0000, 0x00000000, 0x00007fff, 0x0000, 0x0000, 0x0000, 0x0000, 0x00007fff, 0x0000, 0x0000, 0x0000, 0x0000, 0x00007fff];
sdr_addrs = "addr=192.168.10.2,mgmt_addr=192.168.10.2,second_addr=192.168.20.2";
......
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