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input simplification in nr_pdsch_channel_estimation

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francescomani
2025-10-13 10:57:49 +02:00
parent 92bc0aee0e
commit 121937ad4c
3 changed files with 29 additions and 48 deletions
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openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c
+17 -22
View File
@@ -1253,30 +1253,24 @@ void NFAPI_NR_DMRS_TYPE2_average_prb(NR_DL_FRAME_PARMS *frame_parms,
#endif
}
int nr_pdsch_channel_estimation(PHY_VARS_NR_UE *ue,
const UE_nr_rxtx_proc_t *proc,
int nl,
unsigned short p,
unsigned char symbol,
unsigned char nscid,
unsigned short scrambling_id,
unsigned short BWPStart,
uint8_t config_type,
int n_dmrs_cdm_groups,
uint16_t rb_offset,
unsigned short bwp_start_subcarrier,
unsigned short nb_rb_pdsch,
uint32_t pdsch_est_size,
int32_t dl_ch_estimates[][pdsch_est_size],
int rxdataFsize,
c16_t rxdataF[][rxdataFsize],
uint32_t *nvar)
void nr_pdsch_channel_estimation(PHY_VARS_NR_UE *ue,
const UE_nr_rxtx_proc_t *proc,
const fapi_nr_dl_config_dlsch_pdu_rel15_t *dlsch,
int nl,
unsigned short p,
unsigned char symbol,
uint32_t pdsch_est_size,
int32_t dl_ch_estimates[][pdsch_est_size],
int rxdataFsize,
c16_t rxdataF[][rxdataFsize],
uint32_t *nvar)
{
// int gNB_id = proc->gNB_id;
int slot = proc->nr_slot_rx;
NR_DL_FRAME_PARMS *fp = &ue->frame_parms;
const int ch_offset = fp->ofdm_symbol_size * symbol;
const int symbol_offset = fp->ofdm_symbol_size * symbol;
int bwp_start_subcarrier = ue->frame_parms.first_carrier_offset + (dlsch->BWPStart + dlsch->start_rb) * 12;
#ifdef DEBUG_PDSCH
printf(
@@ -1292,13 +1286,15 @@ int nr_pdsch_channel_estimation(PHY_VARS_NR_UE *ue,
#endif
// generate pilot for gNB port number 1000+p
int config_type = dlsch->dmrsConfigType;
int rb_offset = dlsch->rb_offset;
int nb_rb_pdsch = dlsch->number_rbs;
int8_t delta = get_delta(p, config_type);
c16_t pilot[3280] __attribute__((aligned(16)));
// Note: pilot returned by the following function is already the complex conjugate of the transmitted DMRS
float beta_dmrs_pdsch = get_beta_dmrs(n_dmrs_cdm_groups, config_type == NFAPI_NR_DMRS_TYPE2);
float beta_dmrs_pdsch = get_beta_dmrs(dlsch->n_dmrs_cdm_groups, config_type == NFAPI_NR_DMRS_TYPE2);
int16_t dmrs_scaling = (int16_t)((1 / beta_dmrs_pdsch) * (1 << 14));
const uint32_t *gold = nr_gold_pdsch(fp->N_RB_DL, fp->symbols_per_slot, scrambling_id, nscid, slot, symbol);
const uint32_t *gold = nr_gold_pdsch(fp->N_RB_DL, fp->symbols_per_slot, dlsch->dlDmrsScramblingId, dlsch->nscid, slot, symbol);
nr_pdsch_dmrs_rx(ue, slot, gold, pilot, 1000 + p, 0, nb_rb_pdsch + rb_offset, config_type, dmrs_scaling);
delay_t delay = {0};
@@ -1351,7 +1347,6 @@ int nr_pdsch_channel_estimation(PHY_VARS_NR_UE *ue,
}
#endif
}
return 0;
}
/*******************************************************************
openair1/PHY/NR_UE_ESTIMATION/nr_estimation.h
+11 -18
View File
@@ -78,24 +78,17 @@ int nr_pbch_channel_estimation(const NR_DL_FRAME_PARMS *fp,
bool sidelink,
uint Nid);
int nr_pdsch_channel_estimation(PHY_VARS_NR_UE *ue,
const UE_nr_rxtx_proc_t *proc,
int nl,
unsigned short p,
unsigned char symbol,
unsigned char nscid,
unsigned short scrambling_id,
unsigned short BWPStart,
uint8_t config_type,
int n_dmrs_cdm_groups,
uint16_t rb_offset,
unsigned short bwp_start_subcarrier,
unsigned short nb_rb_pdsch,
uint32_t pdsch_est_size,
int32_t dl_ch_estimates[][pdsch_est_size],
int rxdataFsize,
c16_t rxdataF[][rxdataFsize],
uint32_t *nvar);
void nr_pdsch_channel_estimation(PHY_VARS_NR_UE *ue,
const UE_nr_rxtx_proc_t *proc,
const fapi_nr_dl_config_dlsch_pdu_rel15_t *dlsch,
int nl,
unsigned short p,
unsigned char symbol,
uint32_t pdsch_est_size,
int32_t dl_ch_estimates[][pdsch_est_size],
int rxdataFsize,
c16_t rxdataF[][rxdataFsize],
uint32_t *nvar);
int nr_adjust_synch_ue(NR_DL_FRAME_PARMS *frame_parms,
PHY_VARS_NR_UE *ue,
openair1/SCHED_NR_UE/phy_procedures_nr_ue.c
+1 -8
View File
@@ -641,17 +641,10 @@ static int nr_ue_pdsch_procedures(PHY_VARS_NR_UE *ue,
uint32_t nvar_tmp = 0;
nr_pdsch_channel_estimation(ue,
proc,
dlschCfg,
nl,
get_dmrs_port(nl, dlschCfg->dmrs_ports),
m,
dlschCfg->nscid,
dlschCfg->dlDmrsScramblingId,
dlschCfg->BWPStart,
dlschCfg->dmrsConfigType,
dlschCfg->n_dmrs_cdm_groups,
dlschCfg->rb_offset,
ue->frame_parms.first_carrier_offset + (dlschCfg->BWPStart + dlschCfg->start_rb) * 12,
dlschCfg->number_rbs,
pdsch_est_size,
pdsch_dl_ch_estimates,
ue->frame_parms.samples_per_slot_wCP,