Converting OFDM mod/de-mod functions to use c16_ts instead of int16_ts

openair1/PHY/MODULATION/modulation_common.h

@@ -51,7 +51,7 @@ void PHY_ofdm_mod(int *input,
 void normal_prefix_mod(int32_t *txdataF,int32_t *txdata,uint8_t nsymb,LTE_DL_FRAME_PARMS *frame_parms);
 void nr_normal_prefix_mod(c16_t *txdataF, c16_t *txdata, uint8_t nsymb, NR_DL_FRAME_PARMS *frame_parms, uint32_t slot);
 
-void do_OFDM_mod(int32_t **txdataF, int32_t **txdata, uint32_t frame,uint16_t next_slot, LTE_DL_FRAME_PARMS *frame_parms);
+void do_OFDM_mod(c16_t  **txdataF, c16_t  **txdata, uint32_t frame,uint16_t next_slot, LTE_DL_FRAME_PARMS *frame_parms);
 
 
 /** @}*/

openair1/PHY/MODULATION/ofdm_mod.c

@@ -45,16 +45,16 @@ void normal_prefix_mod(int32_t *txdataF,int32_t *txdata,uint8_t nsymb,LTE_DL_FRA
 
 
   
-  PHY_ofdm_mod(txdataF,        // input
-               txdata,         // output
-               frame_parms->ofdm_symbol_size,                
+  PHY_ofdm_mod((int *)txdataF,        // input
+               (int *)txdata,         // output
+               frame_parms->ofdm_symbol_size,
 
                1,                 // number of symbols
                frame_parms->nb_prefix_samples0,               // number of prefix samples
                CYCLIC_PREFIX);
-  PHY_ofdm_mod(txdataF+frame_parms->ofdm_symbol_size,        // input
-               txdata+OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES0,         // output
-               frame_parms->ofdm_symbol_size,                
+  PHY_ofdm_mod((int *)txdataF+frame_parms->ofdm_symbol_size,        // input
+               (int *)txdata+OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES0,         // output
+               frame_parms->ofdm_symbol_size,
                nsymb-1,
                frame_parms->nb_prefix_samples,               // number of prefix samples
                CYCLIC_PREFIX);
@@ -280,7 +280,7 @@ void PHY_ofdm_mod(int *input,                       /// pointer to complex input
 }
 
 
-void do_OFDM_mod(int32_t **txdataF, int32_t **txdata, uint32_t frame,uint16_t next_slot, LTE_DL_FRAME_PARMS *frame_parms)
+void do_OFDM_mod(c16_t **txdataF, c16_t **txdata, uint32_t frame,uint16_t next_slot, LTE_DL_FRAME_PARMS *frame_parms)
 {
 
   int aa, slot_offset, slot_offset_F;
@@ -292,39 +292,39 @@ void do_OFDM_mod(int32_t **txdataF, int32_t **txdata, uint32_t frame,uint16_t ne
     if (is_pmch_subframe(frame,next_slot>>1,frame_parms)) {
       if ((next_slot%2)==0) {
         LOG_D(PHY,"Frame %d, subframe %d: Doing MBSFN modulation (slot_offset %d)\n",frame,next_slot>>1,slot_offset);
-        PHY_ofdm_mod(&txdataF[aa][slot_offset_F],        // input
-                     &txdata[aa][slot_offset],         // output
+        PHY_ofdm_mod((int *)&txdataF[aa][slot_offset_F],        // input
+                     (int *)&txdata[aa][slot_offset],         // output
                      frame_parms->ofdm_symbol_size,                
                      12,                 // number of symbols
                      frame_parms->ofdm_symbol_size>>2,               // number of prefix samples
                      CYCLIC_PREFIX);
 
         if (frame_parms->Ncp == EXTENDED)
-          PHY_ofdm_mod(&txdataF[aa][slot_offset_F],        // input
-                       &txdata[aa][slot_offset],         // output
+          PHY_ofdm_mod((int *)&txdataF[aa][slot_offset_F],        // input
+                       (int *)&txdata[aa][slot_offset],         // output
                        frame_parms->ofdm_symbol_size,                
                        2,                 // number of symbols
                        frame_parms->nb_prefix_samples,               // number of prefix samples
                        CYCLIC_PREFIX);
         else {
           LOG_D(PHY,"Frame %d, subframe %d: Doing PDCCH modulation\n",frame,next_slot>>1);
-          normal_prefix_mod(&txdataF[aa][slot_offset_F],
-                            &txdata[aa][slot_offset],
+          normal_prefix_mod((int32_t *)&txdataF[aa][slot_offset_F],
+                            (int32_t *)&txdata[aa][slot_offset],
                             2,
                             frame_parms);
         }
       }
     } else {
       if (frame_parms->Ncp == EXTENDED)
-        PHY_ofdm_mod(&txdataF[aa][slot_offset_F],        // input
-                     &txdata[aa][slot_offset],         // output
+        PHY_ofdm_mod((int *)&txdataF[aa][slot_offset_F],        // input
+                     (int *)&txdata[aa][slot_offset],         // output
                      frame_parms->ofdm_symbol_size,                
                      6,                 // number of symbols
                      frame_parms->nb_prefix_samples,               // number of prefix samples
                      CYCLIC_PREFIX);
       else {
-        normal_prefix_mod(&txdataF[aa][slot_offset_F],
-                          &txdata[aa][slot_offset],
+        normal_prefix_mod((int32_t *)&txdataF[aa][slot_offset_F],
+                          (int32_t *)&txdata[aa][slot_offset],
                           7,
                           frame_parms);
       }

openair1/SIMULATION/NR_PHY/pbchsim.c

@@ -191,7 +191,7 @@ int main(int argc, char **argv)
   double sigma2, sigma2_dB=10,SNR,snr0=-2.0,snr1=2.0;
   double cfo=0;
   uint8_t snr1set=0;
-  int **txdata;
+  c16_t **txdata;
   double **s_re,**s_im,**r_re,**r_im;
   //double iqim = 0.0;
   double ip =0.0;
@@ -586,7 +586,7 @@ int main(int argc, char **argv)
   s_im = malloc(2*sizeof(double*));
   r_re = malloc(2*sizeof(double*));
   r_im = malloc(2*sizeof(double*));
-  txdata = calloc(2,sizeof(int*));
+  txdata = calloc(2, sizeof(c16_t*));
 
   for (i=0; i<2; i++) {
 
@@ -596,7 +596,7 @@ int main(int argc, char **argv)
     r_re[i] = malloc16_clear(frame_length_complex_samples*sizeof(double));
     r_im[i] = malloc16_clear(frame_length_complex_samples*sizeof(double));
     printf("Allocating %d samples for txdata\n",frame_length_complex_samples);
-    txdata[i] = malloc16_clear(frame_length_complex_samples*sizeof(int));
+    txdata[i] = malloc16_clear(frame_length_complex_samples * sizeof(c16_t));
   }
 
   if (pbch_file_fd!=NULL) {
@@ -655,7 +655,7 @@ int main(int argc, char **argv)
                               12);
 
             PHY_ofdm_mod((int *)gNB->common_vars.txdataF[aa],
-            &txdata[aa][frame_parms->get_samples_slot_timestamp(slot,frame_parms,0)],
+            (int *)&txdata[aa][frame_parms->get_samples_slot_timestamp(slot,frame_parms,0)],
             frame_parms->ofdm_symbol_size,
             12,
             frame_parms->nb_prefix_samples,
@@ -726,8 +726,8 @@ int main(int argc, char **argv)
 
       for (i=0; i<frame_length_complex_samples; i++) {
         for (aa=0; aa<frame_parms->nb_antennas_tx; aa++) {
-          r_re[aa][i] = ((double)(((short *)txdata[aa]))[(i<<1)]);
-          r_im[aa][i] = ((double)(((short *)txdata[aa]))[(i<<1)+1]);
+          r_re[aa][i] = (double)txdata[aa][i].r;
+          r_im[aa][i] = (double)txdata[aa][i].i;
         }
       }
 
@@ -761,8 +761,8 @@ int main(int argc, char **argv)
 
       for (i=0; i<frame_length_complex_samples; i++) {
         for (aa=0; aa<frame_parms->nb_antennas_rx; aa++) {
-          ((short*) UE->common_vars.rxdata[aa])[2*i]   = (short) ((r_re[aa][i] + sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
-          ((short*) UE->common_vars.rxdata[aa])[2*i+1] = (short) ((r_im[aa][i] + sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
+          UE->common_vars.rxdata[aa][i].r = (short)(r_re[aa][i] + sqrt(sigma2 / 2) * gaussdouble(0.0, 1.0));
+          UE->common_vars.rxdata[aa][i].i = (short)(r_im[aa][i] + sqrt(sigma2 / 2) * gaussdouble(0.0, 1.0));
         }
       }