adding RI to DL metrics

srsue/hdr/phy/phch_common.h

@@ -99,6 +99,7 @@ typedef struct {
     float rx_gain_offset;
     float avg_snr_db_cqi;
     float avg_snr_db_sync;
+    float avg_ri;
 
     float avg_noise;
     bool  pcell_meas_enabled;

srsue/hdr/phy/phy_metrics.h

@@ -44,6 +44,7 @@ struct dl_metrics_t
   float rsrp;
   float rsrq;
   float rssi;
+  float ri;
   float turbo_iters;
   float mcs;
   float pathloss;

srsue/src/phy/phch_common.cc

@@ -359,6 +359,7 @@ void phch_common::reset() {
   avg_rsrp = 0;
   avg_rsrp_dbm = 0;
   avg_rsrq_db = 0;
+  avg_ri = 0;
 
   pcell_report_period = 20;
 

srsue/src/phy/phch_worker.cc

@@ -1665,6 +1665,13 @@ void phch_worker::update_measurements()
       }
     }
 
+    // Average RI
+    if (!phy->avg_ri) {
+      phy->avg_ri = SRSLTE_VEC_EMA(phy->last_ri, phy->avg_ri, 0.1);
+    } else {
+      phy->avg_ri = phy->last_ri;
+    }
+
     phy->avg_snr_db_cqi  = 10*log10(phy->avg_rsrp/phy->avg_noise);
 
     // Store metrics
@@ -1674,6 +1681,7 @@ void phch_worker::update_measurements()
     dl_metrics.rssi   = phy->avg_rssi_dbm;
     dl_metrics.pathloss = phy->pathloss;
     dl_metrics.sinr   = phy->avg_snr_db_cqi;
+    dl_metrics.ri     = phy->avg_ri;
     phy->set_dl_metrics(dl_metrics);
 
   }