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fix DL channel estimation around DC for DMRS type 1 and muliple antenna ports

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bug found and fix proposed by: Francesco Mani
This commit is contained in:
Thomas Schlichter
2021-07-05 14:49:39 +02:00
parent ae3e3c5f39
commit ea72bde160
1 changed files with 1 additions and 1 deletions
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openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c
+1 -1
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@@ -942,7 +942,7 @@ int nr_pdsch_channel_estimation(PHY_VARS_NR_UE *ue,
// check if PRB crosses DC and improve estimates around DC // check if PRB crosses DC and improve estimates around DC
if ((bwp_start_subcarrier < ue->frame_parms.ofdm_symbol_size) && (bwp_start_subcarrier+nb_rb_pdsch*12 >= ue->frame_parms.ofdm_symbol_size)) { if ((bwp_start_subcarrier < ue->frame_parms.ofdm_symbol_size) && (bwp_start_subcarrier+nb_rb_pdsch*12 >= ue->frame_parms.ofdm_symbol_size)) {
dl_ch = (int16_t *)&dl_ch_estimates[aarx][ch_offset]; dl_ch = (int16_t *)&dl_ch_estimates[p*ue->frame_parms.nb_antennas_rx+aarx][ch_offset];
uint16_t idxDC = 2*(ue->frame_parms.ofdm_symbol_size - bwp_start_subcarrier); uint16_t idxDC = 2*(ue->frame_parms.ofdm_symbol_size - bwp_start_subcarrier);
uint16_t idxPil = idxDC/2; uint16_t idxPil = idxDC/2;
re_offset = k; re_offset = k;