remove duplicate delta pusch function

openair1/PHY/NR_ESTIMATION/nr_ul_channel_estimation.c

@@ -86,10 +86,10 @@ int nr_pusch_channel_estimation(PHY_VARS_gNB *gNB,
   NR_gNB_PUSCH *pusch_vars = &gNB->pusch_vars[ul_id];
   c16_t **ul_ch_estimates = (c16_t **)pusch_vars->ul_ch_estimates;
   const int symbolSize = gNB->frame_parms.ofdm_symbol_size;
-  const int soffset = (Ns & 3) * gNB->frame_parms.symbols_per_slot*symbolSize;
+  const int soffset = (Ns & 3) * gNB->frame_parms.symbols_per_slot * symbolSize;
   const int delta = get_delta(p, pusch_pdu->dmrs_config_type);
-  int ch_offset = symbolSize*symbol;
-  const int symbol_offset = symbolSize*symbol;
+  int ch_offset = symbolSize * symbol;
+  const int symbol_offset = symbolSize * symbol;
   const int k0 = bwp_start_subcarrier;
   const int nb_rb_pusch = pusch_pdu->rb_size;
 
@@ -157,7 +157,7 @@ int nr_pusch_channel_estimation(PHY_VARS_gNB *gNB,
     c16_t *rxdataF = (c16_t *)&gNB->common_vars.rxdataF[aarx][symbol_offset];
     c16_t *ul_ch = &ul_ch_estimates[nl * gNB->frame_parms.nb_antennas_rx + aarx][ch_offset];
 
-    memset(ul_ch,0,sizeof(*ul_ch)*symbolSize);
+    memset(ul_ch, 0, sizeof(*ul_ch) * symbolSize);
 #ifdef DEBUG_PUSCH
     LOG_I(PHY, "In %s symbol_offset %d, delta %d\n", symbol_offset, delta);
     LOG_I(PHY, "ch est pilot, N_RB_UL %d\n", gNB->frame_parms.N_RB_UL);
@@ -174,10 +174,7 @@ int nr_pusch_channel_estimation(PHY_VARS_gNB *gNB,
       c16_t *pil   = pilot;
       int re_offset = k0;
       LOG_D(PHY,"PUSCH estimation DMRS type 1, Freq-domain interpolation");
-      // For configuration type 1: k = 4*n + 2*k' + delta,
-      // where k' is 0 or 1, and delta is in Table 6.4.1.1.3-1 from TS 38.211
       int pilot_cnt = 0;
-      int delta = nr_pusch_dmrs_delta(pusch_dmrs_type1, p);
 
       for (int n = 0; n < 3 * nb_rb_pusch; n++) {
         // LS estimation

openair1/PHY/NR_REFSIG/nr_dmrs_rx.c

@@ -41,10 +41,8 @@
 #include "nfapi/open-nFAPI/nfapi/public_inc/nfapi_nr_interface.h"
 
 // Table 6.4.1.1.3-1/2 from TS 38.211
-static const int delta1[8] = {0, 0, 1, 1, 0, 0, 1, 1};
 static const int wf1[8][2] = {{1, 1}, {1, -1}, {1, 1}, {1, -1}, {1, 1}, {1, -1}, {1, 1}, {1, -1}};
 static const int wt1[8][2] = {{1, 1}, {1, 1}, {1, 1}, {1, 1}, {1, -1}, {1, -1}, {1, -1}, {1, -1}};
-static const int delta2[12] = {0, 0, 2, 2, 4, 4, 0, 0, 2, 2, 4, 4};
 static const int wf2[12][2] =
     {{1, 1}, {1, -1}, {1, 1}, {1, -1}, {1, 1}, {1, -1}, {1, 1}, {1, -1}, {1, 1}, {1, -1}, {1, 1}, {1, -1}};
 static const int wt2[12][2] =
@@ -56,14 +54,6 @@ static const c16_t nr_rx_mod_table[7] =
 static const c16_t nr_rx_nmod_table[7] =
     {{0, 0}, {-23170, 23170}, {23170, -23170}, {-23170, 23170}, {-23170, -23170}, {23170, 23170}, {23170, -23170}};
 
-int nr_pusch_dmrs_delta(uint8_t dmrs_config_type, unsigned short p) {
-  if (dmrs_config_type == pusch_dmrs_type1) {
-    return delta1[p];
-  } else {
-    return delta2[p];
-  }
-}
-
 int nr_pusch_dmrs_rx(PHY_VARS_gNB *gNB,
                      unsigned int Ns,
                      const uint32_t *nr_gold_pusch,

openair1/PHY/NR_REFSIG/nr_refsig.h

@@ -27,8 +27,6 @@
 #include "PHY/defs_gNB.h"
 #include "openair1/PHY/NR_REFSIG/nr_refsig_common.h"
 
-int nr_pusch_dmrs_delta(uint8_t dmrs_config_type, unsigned short p);
-
 int nr_pusch_dmrs_rx(PHY_VARS_gNB *gNB,
                      unsigned int Ns,
                      const uint32_t *nr_gold_pusch,