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Correction for first OFDM symbol estimation and compensation

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- Direct multiply with the conjugate of the estimation for compensation
This commit is contained in:
Parminder Singh
2020-11-09 17:25:00 +01:00
parent 443f1817e5
commit b0ee3bb206
2 changed files with 0 additions and 12 deletions
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openair1/PHY/NR_ESTIMATION/nr_ul_channel_estimation.c
-6
View File
@@ -605,12 +605,6 @@ void nr_pusch_ptrs_processing(PHY_VARS_gNB *gNB,
gNB->nr_gold_pusch_dmrs[rel15_ul->scid][nr_tti_rx][symbol], gNB->nr_gold_pusch_dmrs[rel15_ul->scid][nr_tti_rx][symbol],
&phase_per_symbol[2* symbol], &phase_per_symbol[2* symbol],
ptrs_re_symbol); ptrs_re_symbol);
/* if very first symbol is PTRS then we need to undo conjugate done in estimation */
/* The PTRS estimation before DMRS symbol is pure error, shall be used as it is*/
if(symbol == *startSymbIndex)
{
phase_per_symbol[(2* symbol)+1] = (-1) * phase_per_symbol[(2* symbol)+1];
}
} }
/* For last OFDM symbol at each antenna perform interpolation and compensation for the slot*/ /* For last OFDM symbol at each antenna perform interpolation and compensation for the slot*/
if(symbol == (symbInSlot -1)) if(symbol == (symbInSlot -1))
openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c
-6
View File
@@ -1072,12 +1072,6 @@ void nr_pdsch_ptrs_processing(PHY_VARS_NR_UE *ue,
ue->nr_gold_pdsch[eNB_id][nr_tti_rx][symbol], ue->nr_gold_pdsch[eNB_id][nr_tti_rx][symbol],
&phase_per_symbol[2* symbol], &phase_per_symbol[2* symbol],
&ptrs_re_symbol[symbol]); &ptrs_re_symbol[symbol]);
/* if very first symbol is PTRS then we need to undo conjugate done in estimation */
/* The PTRS estimation before DMRS symbol is pure error, shall be used as it is*/
if(symbol == *startSymbIndex)
{
phase_per_symbol[(2* symbol)+1] = (-1) * phase_per_symbol[(2* symbol)+1];
}
} }
}// HARQ 0 }// HARQ 0