3/4 sampling for 80MHz / Max ofdm size 4096

openair1/PHY/INIT/nr_parms.c

@@ -66,11 +66,20 @@ int nr_init_frame_parms(LTE_DL_FRAME_PARMS *frame_parms)
         case 189:
 
         case 217: //80 MHz
+          if (frame_parms->threequarter_fs) {
+            frame_parms->ofdm_symbol_size = 3072;
+            frame_parms->samples_per_tti = 46080;
+            frame_parms->first_carrier_offset = 1770; //3072 - 1302
+            frame_parms->nb_prefix_samples0 = 240;
+            frame_parms->nb_prefix_samples = 216;
+          }
+          else {
             frame_parms->ofdm_symbol_size = 4096;
             frame_parms->samples_per_tti = 61440;
             frame_parms->first_carrier_offset = 2794; //4096 - 1302
             frame_parms->nb_prefix_samples0 = 320;
             frame_parms->nb_prefix_samples = 288;
+          }
           break;
 
         case 245:

openair1/PHY/MODULATION/ofdm_mod.c

@@ -67,7 +67,7 @@ void PHY_ofdm_mod(int *input,                       /// pointer to complex input
                  )
 {
 
-  short temp[2048*4] __attribute__((aligned(32)));
+  short temp[4096*4] __attribute__((aligned(32)));
   unsigned short i,j;
   short k;
 
@@ -101,6 +101,12 @@ void PHY_ofdm_mod(int *input,                       /// pointer to complex input
     idft = idft2048;
     break;
 
+  case 3072:
+    idft = idft3072;
+
+  case 4096:
+    idft = idft4096;
+
   default:
     idft = idft512;
     break;