Fix PDCCH decoding when BWPStart is higher than 0

openair1/PHY/NR_TRANSPORT/nr_dci.c

@@ -87,7 +87,7 @@ void nr_generate_dci(PHY_VARS_gNB *gNB,
   get_coreset_rballoc(pdcch_pdu_rel15->FreqDomainResource,&n_rb,&rb_offset);
   cset_start_sc = frame_parms->first_carrier_offset + (pdcch_pdu_rel15->BWPStart + rb_offset) * NR_NB_SC_PER_RB;
 
-  int16_t mod_dmrs[pdcch_pdu_rel15->StartSymbolIndex+pdcch_pdu_rel15->DurationSymbols][(n_rb+rb_offset)*6] __attribute__((aligned(16))); // 3 for the max coreset duration
+  int16_t mod_dmrs[pdcch_pdu_rel15->StartSymbolIndex+pdcch_pdu_rel15->DurationSymbols][(n_rb+rb_offset+pdcch_pdu_rel15->BWPStart)*6] __attribute__((aligned(16))); // 3 for the max coreset duration
 
   for (int d=0;d<pdcch_pdu_rel15->numDlDci;d++) {
     /*The coreset is initialised
@@ -109,7 +109,7 @@ void nr_generate_dci(PHY_VARS_gNB *gNB,
     LOG_D(PHY, "pdcch: Coreset rb_offset %d, nb_rb %d BWP Start %d\n",rb_offset,n_rb,pdcch_pdu_rel15->BWPStart);
     LOG_D(PHY, "pdcch: Coreset starting subcarrier %d on symbol %d (%d symbols)\n", cset_start_sc, cset_start_symb, cset_nsymb);
     // DMRS length is per OFDM symbol
-    uint32_t dmrs_length = n_rb*6; //2(QPSK)*3(per RB)*6(REG per CCE)
+    uint32_t dmrs_length = (n_rb+pdcch_pdu_rel15->BWPStart)*6; //2(QPSK)*3(per RB)*6(REG per CCE)
     uint32_t encoded_length = dci_pdu->AggregationLevel*108; //2(QPSK)*9(per RB)*6(REG per CCE)
     if (dci_pdu->RNTI != 0xFFFF)
       LOG_D(PHY, "DL_DCI : rb_offset %d, nb_rb %d, DMRS length per symbol %d\t DCI encoded length %d (precoder_granularity %d, reg_mapping %d), Scrambling_Id %d, ScramblingRNTI %x, PayloadSizeBits %d\n",
@@ -210,7 +210,7 @@ void nr_generate_dci(PHY_VARS_gNB *gNB,
           // dmrs index depends on reference point for k according to 38.211 7.4.1.3.2
           int eff_reg_idx = cce_list[d][cce_idx].reg_list[reg_in_cce_idx].reg_idx/pdcch_pdu_rel15->DurationSymbols;
           if (pdcch_pdu_rel15->CoreSetType == NFAPI_NR_CSET_CONFIG_PDCCH_CONFIG)
-            dmrs_idx = eff_reg_idx * 3;
+            dmrs_idx = (eff_reg_idx + pdcch_pdu_rel15->BWPStart) * 3;
           else
             dmrs_idx = (eff_reg_idx + rb_offset) * 3;