diff --git a/openair1/PHY/LTE_ESTIMATION/lte_sync_time.c b/openair1/PHY/LTE_ESTIMATION/lte_sync_time.c
index 6aaa9114e1..e37b8e5c74 100644
--- a/openair1/PHY/LTE_ESTIMATION/lte_sync_time.c
+++ b/openair1/PHY/LTE_ESTIMATION/lte_sync_time.c
@@ -682,7 +682,7 @@ int ru_sync_time(RU_t *ru,
   }
   avg0/=(length/4);
 
-  int dmrsoffset = 2*(frame_parms->ofdm_symbol_size+frame_parms->nb_prefix_samples) + frame_parms->nb_prefix_samples0;
+  int dmrsoffset = 3*(frame_parms->ofdm_symbol_size+frame_parms->nb_prefix_samples) + frame_parms->nb_prefix_samples0;
   
   if ((int64_t)maxlev0 > (5*avg0)) {*lev = maxlev0; *avg=avg0; return((length+maxpos0-dmrsoffset)%length);}
 
diff --git a/openair1/SCHED/ru_procedures.c b/openair1/SCHED/ru_procedures.c
index c80b103eec..e0e4e1bdb7 100644
--- a/openair1/SCHED/ru_procedures.c
+++ b/openair1/SCHED/ru_procedures.c
@@ -101,6 +101,7 @@ void feptx0(RU_t *ru,int slot) {
 		  "ru->generate_dmrs_sync should not be set, frame_type %d, is_slave %d\n",
 		  fp->frame_type,ru->is_slave);
 */
+
       if (ru->generate_dmrs_sync == 1 && slot == 0 && subframe == 1 && aa==0) {
 	int32_t dmrs[ru->frame_parms.ofdm_symbol_size*14] __attribute__((aligned(32)));
         int32_t *dmrsp[2] = {&dmrs[(3-ru->frame_parms.Ncp)*ru->frame_parms.ofdm_symbol_size],NULL};
@@ -128,12 +129,18 @@ void feptx0(RU_t *ru,int slot) {
                         1,
                         fp);
       */
-      } else {
-      normal_prefix_mod(&ru->common.txdataF_BF[aa][slot*slot_sizeF],
-			(int*)&ru->common.txdata[aa][slot_offset],
-			7,
-			fp);
-     }  
+       normal_prefix_mod(&ru->common.txdataF_BF[aa][slot*slot_sizeF],
+                        (int*)&ru->common.txdata[aa][slot_offset],
+                        3,
+                        fp);
+      }
+      else {
+       normal_prefix_mod(&ru->common.txdataF_BF[aa][slot*slot_sizeF],
+                        (int*)&ru->common.txdata[aa][slot_offset],
+                        7,
+                        fp);
+
+      } 
   }
    /* 
     len = fp->samples_per_tti>>1;
diff --git a/targets/RT/USER/lte-enb.c b/targets/RT/USER/lte-enb.c
index 7bb8ffc150..8f23661187 100644
--- a/targets/RT/USER/lte-enb.c
+++ b/targets/RT/USER/lte-enb.c
@@ -521,7 +521,7 @@ int wakeup_txfh(eNB_rxtx_proc_t *proc,PHY_VARS_eNB *eNB) {
       exit_fun( "error locking mutex_eNB" );
       return(-1);
     }
-
+printf("waking up for frame %d subframe %d for RU TX \n", proc->frame_tx, proc->subframe_tx);
       ++ru_proc->instance_cnt_eNBs;
       ru_proc->timestamp_tx = proc->timestamp_tx;
       ru_proc->subframe_tx  = proc->subframe_tx;
diff --git a/targets/RT/USER/lte-ru.c b/targets/RT/USER/lte-ru.c
index 4110291bee..58dd1bc242 100644
--- a/targets/RT/USER/lte-ru.c
+++ b/targets/RT/USER/lte-ru.c
@@ -422,7 +422,7 @@ void fh_if4p5_north_asynch_in(RU_t *ru,int *frame,int *subframe) {
   LOG_D(PHY,"fh_if4p5_north_asynch_in: RU %d, frame %d, subframe %d\n",ru->idx,*frame,*subframe);
   do {   
     recv_IF4p5(ru, &frame_tx, &subframe_tx, &packet_type, &symbol_number);
-    //printf("income frame.subframe %d.%d, our frame.subframe %d.%d\n",frame_tx,subframe_tx,*frame,*subframe);
+    LOG_D(PHY,"income frame.subframe %d.%d, our frame.subframe %d.%d.%d (symbol mask %x)\n",frame_tx,subframe_tx,*frame,*subframe,symbol_number,symbol_mask);
     if (ru->cmd == STOP_RU){
       LOG_E(PHY,"Got STOP_RU\n");
       pthread_mutex_lock(&proc->mutex_ru);
@@ -796,9 +796,10 @@ void tx_rf(RU_t *ru) {
 				      ru->nb_tx,
 				      flags);
     ru->south_out_cnt++;
-    
-    LOG_D(PHY,"[TXPATH] RU %d tx_rf, writing to TS %llu, frame %d, unwrapped_frame %d, subframe %d\n",ru->idx,
-	  (long long unsigned int)proc->timestamp_tx,proc->frame_tx,proc->frame_tx_unwrap,proc->subframe_tx);
+    //int se = dB_fixed(signal_energy(txp[0],siglen+sf_extension));
+
+    //LOG_D(PHY,"[TXPATH] RU %d tx_rf (en %d,len %d), writing to TS %llu, frame %d, unwrapped_frame %d, subframe %d\n",ru->idx,se,siglen+sf_extension,
+//	  (long long unsigned int)proc->timestamp_tx,proc->frame_tx,proc->frame_tx_unwrap,proc->subframe_tx);
     VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_WRITE, 0 );