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DLSCH RB extraction bugfix: check DMRS bitmap only in DMRS symbols

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This commit is contained in:
francescomani
2025-06-30 14:50:43 +02:00
parent a3b9db2022
commit d868e2d7cc
1 changed files with 10 additions and 7 deletions
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openair1/PHY/NR_UE_TRANSPORT/nr_dlsch_demodulation.c
+10 -7
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@@ -1122,13 +1122,16 @@ static void nr_dlsch_extract_rbs(uint32_t rxdataF_sz,
AssertFatal(n_dmrs_cdm_groups == 1 || n_dmrs_cdm_groups == 2 || n_dmrs_cdm_groups == 3,
"n_dmrs_cdm_groups %d is illegal\n",n_dmrs_cdm_groups);
uint32_t dmrs_rb_bitmap = 0xfff; // all REs taken by dmrs
if (config_type == NFAPI_NR_DMRS_TYPE1 && n_dmrs_cdm_groups == 1)
dmrs_rb_bitmap = 0x555; // alternating REs starting from 0
if (config_type == NFAPI_NR_DMRS_TYPE2 && n_dmrs_cdm_groups == 1)
dmrs_rb_bitmap = 0xc3; // REs 0,1 and 6,7
if (config_type == NFAPI_NR_DMRS_TYPE2 && n_dmrs_cdm_groups == 2)
dmrs_rb_bitmap = 0x3cf; // REs 0,1,2,3 and 6,7,8,9
uint32_t dmrs_rb_bitmap = 0;
if (pilots) {
dmrs_rb_bitmap = 0xfff; // all REs taken by dmrs
if (config_type == NFAPI_NR_DMRS_TYPE1 && n_dmrs_cdm_groups == 1)
dmrs_rb_bitmap = 0x555; // alternating REs starting from 0
if (config_type == NFAPI_NR_DMRS_TYPE2 && n_dmrs_cdm_groups == 1)
dmrs_rb_bitmap = 0xc3; // REs 0,1 and 6,7
if (config_type == NFAPI_NR_DMRS_TYPE2 && n_dmrs_cdm_groups == 2)
dmrs_rb_bitmap = 0x3cf; // REs 0,1,2,3 and 6,7,8,9
}
// csi_res_bitmap LS 16 bits for even RBs, MS 16 bits for odd RBs
uint32_t csi_res_even = csi_res_bitmap & 0xfff;