fft scaling fix

openair1/PHY/LTE_ESTIMATION/lte_sync_timefreq.c

@@ -81,7 +81,8 @@ void lte_sync_timefreq(PHY_VARS_UE *ue,int band,unsigned int DL_freq)
 
       //compute frequency-domain representation of 6144-sample chunk
       dft6144((int16_t *)rxp,
-              sp);
+              sp,
+              1);
 
 
       /*

openair1/PHY/LTE_TRANSPORT/prach.c

@@ -357,10 +357,10 @@ void rx_prach0(PHY_VARS_eNB *eNB,
 	if (prach_fmt == 4) {
 	  dft256(prach2,rxsigF[aa],1);
 	} else {
-	  dft3072(prach2,rxsigF[aa]);
+	  dft3072(prach2,rxsigF[aa],1);
 	  
 	  if (prach_fmt>1)
-	    dft3072(prach2+6144,rxsigF[aa]+6144);
+	    dft3072(prach2+6144,rxsigF[aa]+6144,1);
 	}
 	
 	break;
@@ -371,10 +371,10 @@ void rx_prach0(PHY_VARS_eNB *eNB,
 	  dft1024(prach2,rxsigF[aa],1);
 	  fft_size = 1024;
 	} else {
-	  dft6144(prach2,rxsigF[aa]);
+	  dft6144(prach2,rxsigF[aa],1);
 	  
 	  if (prach_fmt>1)
-	    dft6144(prach2+12288,rxsigF[aa]+12288);
+	    dft6144(prach2+12288,rxsigF[aa]+12288,1);
 	  
 	  fft_size = 6144;
 	}
@@ -395,7 +395,7 @@ void rx_prach0(PHY_VARS_eNB *eNB,
 	
       case 75:
 	if (prach_fmt == 4) {
-	  dft3072(prach2,rxsigF[aa]);
+	  dft3072(prach2,rxsigF[aa],1);
 	} else {
 	  dft18432(prach2,rxsigF[aa]);
 	  
@@ -417,7 +417,7 @@ void rx_prach0(PHY_VARS_eNB *eNB,
 	  }
 	} else {
 	  if (prach_fmt == 4) {
-	    dft3072(prach2,rxsigF[aa]);
+	    dft3072(prach2,rxsigF[aa],1);
 	  } else {
 	    dft18432(prach2,rxsigF[aa]);
 	    

openair1/PHY/TOOLS/tools_defs.h

@@ -174,25 +174,25 @@ This function performs optimized fixed-point radix-2 FFT/IFFT.
 
 void idft1536(int16_t *sigF,int16_t *sig,int scale);
 
-void idft6144(int16_t *sigF,int16_t *sig);
+void idft6144(int16_t *sigF,int16_t *sig, int scale);
 
 void idft12288(int16_t *sigF,int16_t *sig);
 
 void idft18432(int16_t *sigF,int16_t *sig);
 
-void idft3072(int16_t *sigF,int16_t *sig);
+void idft3072(int16_t *sigF,int16_t *sig, int scale);
 
 void idft24576(int16_t *sigF,int16_t *sig);
 
 void dft1536(int16_t *sigF,int16_t *sig,int scale);
 
-void dft6144(int16_t *sigF,int16_t *sig);
+void dft6144(int16_t *sigF,int16_t *sig, int scale);
 
 void dft12288(int16_t *sigF,int16_t *sig);
 
 void dft18432(int16_t *sigF,int16_t *sig);
 
-void dft3072(int16_t *sigF,int16_t *sig);
+void dft3072(int16_t *sigF,int16_t *sig, int scale);
 
 void dft24576(int16_t *sigF,int16_t *sig);