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Adding usage of PRS RBOffset in the PRS Generation at gNB and Channel estimation at UE

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This commit is contained in:
Sagar Parsawar
2022-02-21 15:25:32 +01:00
parent 43461149b3
commit 0fcf8d9c20
3 changed files with 19 additions and 3 deletions
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openair1/PHY/NR_TRANSPORT/nr_prs.c
+1 -1
View File
@@ -47,7 +47,7 @@ int nr_generate_prs(uint32_t **nr_gold_prs,
k_prime = k_prime_table[3][symInd];
}
k = (prs_data->REOffset+k_prime) % prs_data->CombSize + frame_parms->first_carrier_offset ;
k = (prs_data->REOffset+k_prime) % prs_data->CombSize + prs_data->RBOffset*12 + frame_parms->first_carrier_offset;
// QPSK modulation
for (int m = 0; m < (12/prs_data->CombSize) * prs_data->NumRB; m++) {
openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c
+2 -2
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@@ -35,7 +35,7 @@
//#define DEBUG_PDSCH
//#define DEBUG_PDCCH
//#define DEBUG_CH
//#define DEBUG_PRS_CHEST
#define DEBUG_PRS_CHEST
extern short nr_qpsk_mod_table[8];
int nr_prs_channel_estimation(PHY_VARS_NR_UE *ue,
@@ -82,7 +82,7 @@ int nr_prs_channel_estimation(PHY_VARS_NR_UE *ue,
}
//re_offset
k = re_offset = (prs_cfg->REOffset+k_prime) % prs_cfg->CombSize + frame_params->first_carrier_offset;
k = re_offset = (prs_cfg->REOffset+k_prime) % prs_cfg->CombSize + prs_cfg->RBOffset*12 + frame_params->first_carrier_offset;
#ifdef DEBUG_PRS_CHEST
printf("PRS config l %d k_prime %d, re_offset %d k %d :\nprs_cfg->SymbolStart %d\nprs_cfg->NumPRSSymbols %d\nprs_cfg->NumRB %d\nprs_cfg->CombSize %d\n", l, k_prime, re_offset, k, prs_cfg->SymbolStart, prs_cfg->NumPRSSymbols, prs_cfg->NumRB, prs_cfg->CombSize);
targets/PROJECTS/GENERIC-NR-5GC/CONF/ue_nr_prs.conf
+16
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@@ -0,0 +1,16 @@
prs_config = (
{
PRSResourceSetPeriod0 = 40;
PRSResourceSetPeriod1 = 0;
SymbolStart = 7;
NumPRSSymbols = 4;
NumRB = 100;
RBOffset = 0;
CombSize = 4;
REOffset = 0;
PRSResourceOffset = 0;
PRSResourceRepetition = 1;
PRSResourceTimeGap = 1;
NPRS_ID = 0;
}
);