Reduce LO leakage by not transmit signal on idle

srsue/src/phy/phch_common.cc

@@ -62,9 +62,10 @@ phch_common::phch_common(uint32_t max_mutex_) : tx_mutex(max_mutex_)
   bzero(zeros, 50000*sizeof(cf_t));
 
   // FIXME: This is an ugly fix to avoid the TX filters to empty
+  /*
   for (int i=0;i<50000;i++) {
     zeros[i] = 0.01*cexpf(((float) i/50000)*0.1*_Complex_I);
-  }
+  }*/
 
   reset();