adapt the tm7 configuration file

targets/PROJECTS/GENERIC-LTE-EPC/CONF/enb.band7.tm7.exmimo2.conf

@@ -23,6 +23,9 @@ eNBs =
 
     component_carriers = (
         {
+        node_function                                         = "eNodeB_3GPP";
+        node_timing                                           = "synch_to_ext_device";
+        node_synch_ref                                        = 0;
         frame_type					      = "FDD";
         tdd_config 					      = 3;
         tdd_config_s            			      = 0;
@@ -34,8 +37,8 @@ eNBs =
         N_RB_DL                 			      = 25;
         Nid_cell_mbsfn          			      = 0;
         nb_antenna_ports          			      = 1;
-        nb_antennas_tx          			      = 2;
-        nb_antennas_rx          			      = 2;
+        nb_antennas_tx          			      = 1;
+        nb_antennas_rx          			      = 1;
         tx_gain                                            = 25;
         rx_gain                                            = 20;
         prach_root              			      = 0;