usrp_lib: setting master clock rate to 30.72 and filter to 20MHz for all cases...

usrp_lib: setting master clock rate to 30.72 and filter to 20MHz for all cases to improve noise figure and channel response

targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp

@@ -597,9 +597,10 @@ extern "C" {
       openair0_cfg[0].rx_gain_calib_table = calib_table_b210_38;
       bw_gain_adjust=1;
     }
+    s->usrp->set_master_clock_rate(30.72e6);
+
     switch ((int)openair0_cfg[0].sample_rate) {
     case 30720000:
-      s->usrp->set_master_clock_rate(30.72e6);
             // from usrp_time_offset
       openair0_cfg[0].samples_per_packet    = 4096;
       openair0_cfg[0].tx_sample_advance     = 115;
@@ -608,7 +609,6 @@ extern "C" {
       openair0_cfg[0].tx_scheduling_advance = 11*openair0_cfg[0].samples_per_packet;
       break;
     case 23040000:
-      s->usrp->set_master_clock_rate(46.08e6);
       openair0_cfg[0].samples_per_packet    = 2048;
       openair0_cfg[0].tx_sample_advance     = 113;
       openair0_cfg[0].tx_bw                 = 20e6;
@@ -616,27 +616,24 @@ extern "C" {
       openair0_cfg[0].tx_scheduling_advance = 8*openair0_cfg[0].samples_per_packet;
       break;
     case 15360000:
-      s->usrp->set_master_clock_rate(30.72e6);
       openair0_cfg[0].samples_per_packet    = 2048;
       openair0_cfg[0].tx_sample_advance     = 113;
-      openair0_cfg[0].tx_bw                 = 10e6;
-      openair0_cfg[0].rx_bw                 = 10e6;
+      openair0_cfg[0].tx_bw                 = 20e6;
+      openair0_cfg[0].rx_bw                 = 20e6;
       openair0_cfg[0].tx_scheduling_advance = 5*openair0_cfg[0].samples_per_packet;
       break;
     case 7680000:
-      s->usrp->set_master_clock_rate(30.72e6);
       openair0_cfg[0].samples_per_packet    = 1024;
       openair0_cfg[0].tx_sample_advance     = 70;//103;
-      openair0_cfg[0].tx_bw                 = 5e6;
-      openair0_cfg[0].rx_bw                 = 5e6;
+      openair0_cfg[0].tx_bw                 = 20e6;
+      openair0_cfg[0].rx_bw                 = 20e6;
       openair0_cfg[0].tx_scheduling_advance = 5*openair0_cfg[0].samples_per_packet;
       break;
     case 1920000:
-      s->usrp->set_master_clock_rate(30.72e6);
       openair0_cfg[0].samples_per_packet    = 256;
       openair0_cfg[0].tx_sample_advance     = 40;
-      openair0_cfg[0].tx_bw                 = 1.25e6;
-      openair0_cfg[0].rx_bw                 = 1.25e6;
+      openair0_cfg[0].tx_bw                 = 20e6;
+      openair0_cfg[0].rx_bw                 = 20e6;
       openair0_cfg[0].tx_scheduling_advance = 8*openair0_cfg[0].samples_per_packet;
       break;
     default: