Adapt time synchro to NB-IoT

cmake_targets/CMakeLists.txt

@@ -1045,6 +1045,7 @@ set(PHY_SRC
   ${OPENAIR1_DIR}/PHY/LTE_ESTIMATION/freq_equalization.c
   ${OPENAIR1_DIR}/PHY/LTE_ESTIMATION/freq_equalization_NB_IoT.c
   ${OPENAIR1_DIR}/PHY/LTE_ESTIMATION/lte_sync_time.c
+  ${OPENAIR1_DIR}/PHY/LTE_ESTIMATION/lte_sync_time_NB_IoT.c
   ${OPENAIR1_DIR}/PHY/LTE_ESTIMATION/lte_sync_timefreq.c
   ${OPENAIR1_DIR}/PHY/LTE_ESTIMATION/lte_adjust_sync.c
   ${OPENAIR1_DIR}/PHY/LTE_ESTIMATION/lte_adjust_sync_NB_IoT.c

openair1/PHY/LTE_ESTIMATION/defs_NB_IoT.h

@@ -33,6 +33,19 @@ int lte_est_timing_advance(NB_IoT_DL_FRAME_PARMS *frame_parms,
                            short coef);
 */
 
+////////// Vincent: NB-IoT DL synchronization //////////////////////////////////////////////////
+
+int lte_sync_time_init_NB_IoT(NB_IoT_DL_FRAME_PARMS *frame_parms ); 
+
+void lte_sync_time_free_NB_IoT(void); 
+
+int lte_sync_time_NB_IoT(int **rxdata, ///rx data in time domain
+                  NB_IoT_DL_FRAME_PARMS *frame_parms,
+                  int *eNB_id);
+
+
+////////////////////////////////////////////////////////////////////////////////////////////////
+
 int NB_IoT_est_timing_advance_pusch(PHY_VARS_eNB_NB_IoT* phy_vars_eNB,module_id_t UE_id);
 
 
@@ -61,10 +74,10 @@ int16_t lte_ul_freq_offset_estimation_NB_IoT(NB_IoT_DL_FRAME_PARMS *frame_parms,
                                       		 uint16_t nb_rb);
 
 void freq_equalization_NB_IoT(NB_IoT_DL_FRAME_PARMS *frame_parms,
-                       		  int **rxdataF_comp,
-                       		  int **ul_ch_mag,
-                       		  int **ul_ch_mag_b,
-                       		  unsigned char symbol,
+                         		  int **rxdataF_comp,
+                         		  int **ul_ch_mag,
+                         		  int **ul_ch_mag_b,
+                         		  unsigned char symbol,
                        	      unsigned short Msc_RS,
                               unsigned char Qm);
 

openair1/PHY/LTE_TRANSPORT/dlsch_demodulation_NB_IoT.c

@@ -4138,17 +4138,17 @@ unsigned short dlsch_extract_rbs_single_NB_IoT(int **rxdataF,
           //dl_ch0++;
         }
 
-        // PBCH
-        if (subframe==0) {
-          rb_alloc_ind = 0;
-        }
+        // // PBCH
+        // if (subframe==0) {
+        //   rb_alloc_ind = 0;
+        // }
 
-        //SSS
-        if (subframe==0 && frame%2==0) {
+        //NSSS subframe
+        if (subframe==9 && frame%2==0) {
           rb_alloc_ind = 0;
         }
 
-        //PSS
+        //NPSS subframe
         if (subframe==5) {
           rb_alloc_ind = 0;
         }

openair1/PHY/extern_NB_IoT.h

@@ -58,18 +58,20 @@ extern PHY_VARS_eNB_NB_IoT * PHY_vars_eNB_NB_IoT_g[MAX_eNB_NB_IoT][MAX_NUM_CCs];
 //extern MAC_xface_NB_IoT *mac_xface_NB_IoT;
 
 extern IF_Module_t *if_inst;
-/*
 
-extern short primary_synch0[144];
+
+extern short primary_synch_NB_IoT[264];
+/*
 extern short primary_synch1[144];
 extern short primary_synch2[144];
 extern unsigned char primary_synch0_tab[72];
 extern unsigned char primary_synch1_tab[72];
-extern unsigned char primary_synch2_tab[72];
-extern int16_t *primary_synch0_time; //!< index: [0..ofdm_symbol_size*2[
-extern int16_t *primary_synch1_time; //!< index: [0..ofdm_symbol_size*2[
-extern int16_t *primary_synch2_time; //!< index: [0..ofdm_symbol_size*2[
-extern int *sync_corr_ue0; //!< index [0..10*samples_per_tti[
+extern unsigned char primary_synch2_tab[72]; */
+extern int16_t *primary_synch0_time_NB_IoT; //!< index: [0..ofdm_symbol_size*2[
+// extern int16_t *primary_synch1_time; //!< index: [0..ofdm_symbol_size*2[
+// extern int16_t *primary_synch2_time; //!< index: [0..ofdm_symbol_size*2[
+extern int *sync_corr_ue0_NB_IoT; //!< index [0..10*samples_per_tti[
+/*
 extern int *sync_corr_ue1; //!< index [0..10*samples_per_tti[
 extern int *sync_corr_ue2; //!< index [0..10*samples_per_tti[