Adjusted PSS find thresholds for loaded cells

cuhd/lib/cuhd_imp.cpp

@@ -112,6 +112,7 @@ int cuhd_open(char *args, void **h)
   std::string _args = std::string(args);
   handler->usrp = uhd::usrp::multi_usrp::make(_args + ", master_clock_rate=30720000" + ", num_recv_frames=512");
 
+//  handler->usrp = uhd::usrp::multi_usrp::make(_args + ", master_clock_rate=50000000" + ", num_recv_frames=512");
   handler->usrp->set_clock_source("internal");
 
   std::string otw, cpu;

lte/phy/examples/pdsch_enodeb.c

@@ -52,7 +52,7 @@ uint32_t mcs_idx = 12;
 int nof_frames = -1;
 
 char *uhd_args = "";
-float uhd_amp = 0.25, uhd_gain = 10.0, uhd_freq = 2400000000;
+float uhd_amp = 0.01, uhd_gain = 10.0, uhd_freq = 2400000000;
 
 filesink_t fsink;
 lte_fft_t ifft;
@@ -70,6 +70,7 @@ void usage(char *prog) {
   printf("Usage: %s [agmfoncvp]\n", prog);
 #ifndef DISABLE_UHD
   printf("\t-a UHD args [Default %s]\n", uhd_args);
+  printf("\t-l UHD amplitude [Default %.2f]\n", uhd_amp);
   printf("\t-g UHD TX gain [Default %.2f dB]\n", uhd_gain);
   printf("\t-f UHD TX frequency [Default %.1f MHz]\n", uhd_freq / 1000000);
 #else
@@ -85,7 +86,7 @@ void usage(char *prog) {
 
 void parse_args(int argc, char **argv) {
   int opt;
-  while ((opt = getopt(argc, argv, "agfmoncpv")) != -1) {
+  while ((opt = getopt(argc, argv, "aglfmoncpv")) != -1) {
     switch (opt) {
     case 'a':
       uhd_args = argv[optind];
@@ -93,6 +94,9 @@ void parse_args(int argc, char **argv) {
     case 'g':
       uhd_gain = atof(argv[optind]);
       break;
+    case 'l':
+      uhd_amp = atof(argv[optind]);
+      break;
     case 'f':
       uhd_freq = atof(argv[optind]);
       break;

lte/phy/examples/pdsch_ue.c

@@ -99,7 +99,7 @@ void usage(prog_args_t *args, char *prog) {
 void parse_args(prog_args_t *args, int argc, char **argv) {
   int opt;
   args_default(args);
-  while ((opt = getopt(argc, argv, "icagfndvtbp")) != -1) {
+  while ((opt = getopt(argc, argv, "icagfndvtbpr")) != -1) {
     switch (opt) {
     case 'i':
       args->io_config.input_file_name = argv[optind];
@@ -125,6 +125,9 @@ void parse_args(prog_args_t *args, int argc, char **argv) {
     case 'n':
       args->nof_subframes = atoi(argv[optind]);
       break;
+    case 'r':
+      args->rnti= atoi(argv[optind]);
+      break;
     case 'd':
       args->disable_plots = true;
       break;
@@ -201,8 +204,9 @@ int main(int argc, char **argv) {
     
     /* iodev_receive returns 1 if successfully read 1 aligned subframe */
     if (ret == 0) {
-    printf("Finding PSS... Peak: %8.1f, Output level: %+.2f dB\r", 
-             sync_get_peak_value(&iodev.sframe.s), 10*log10f(agc_get_gain(&iodev.sframe.agc)));      
+      printf("Finding PSS... Peak: %8.1f, Output level: %+.2f dB FrameCnt: %d, State: %d\r", 
+             sync_get_peak_value(&iodev.sframe.s), 20*log10f(agc_get_output_level(&iodev.sframe.agc)), 
+             iodev.sframe.frame_total_cnt, iodev.sframe.state);      
     } else if (ret == 1) {
       if (!ue_dl_initiated) {
         if (iodev_isUSRP(&iodev)) {

lte/phy/include/liblte/phy/phch/pdsch.h

@@ -43,7 +43,7 @@
 #include "liblte/phy/phch/dci.h"
 #include "liblte/phy/phch/regs.h"
 
-#define TDEC_ITERATIONS         6
+#define TDEC_ITERATIONS         3
 
 typedef _Complex float cf_t;
 

lte/phy/lib/phch/src/ue_sync.c

@@ -60,19 +60,19 @@ static void update_threshold(ue_sync_t *q) {
   if (symbol_sz > 0) {
     switch (symbol_sz) {
       case 128:
-        sync_set_threshold(&q->s, 20000, 2000);
+        sync_set_threshold(&q->s, 10000, 1000);
         break;
       case 256:
-        sync_set_threshold(&q->s, 25000, 2500);
+        sync_set_threshold(&q->s, 20000, 2000);
         break;
       case 512:
-        sync_set_threshold(&q->s, 38000, 3800);
+        sync_set_threshold(&q->s, 30000, 3000);
         break;
       case 1024:
-        sync_set_threshold(&q->s, 50000, 5000);
+        sync_set_threshold(&q->s, 40000, 4000);
         break;
       case 2048:
-        sync_set_threshold(&q->s, 80000, 4000);
+        sync_set_threshold(&q->s, 50000, 5000);
     }  
   }
 }
@@ -318,14 +318,17 @@ static int mib_decoder_run(ue_sync_t *q) {
   if (pbch_decode(&q->pbch, q->sf_symbols, q->ce, &q->mib) == 1) {        
     q->frame_number = q->mib.sfn; 
     q->cell.nof_ports = q->mib.nof_ports;
-    q->cell.nof_prb = q->mib.nof_prb;
     
     if (!q->pbch_decoded) {
       printf("\n\nMIB decoded:\n");
       pbch_mib_fprint(stdout, &q->mib, q->cell.id);
+      
+      if (q->cell.nof_prb != q->mib.nof_prb) {
+        q->cell.nof_prb = q->mib.nof_prb;
         if (q->change_srate) {
           ret = update_srate(q);        
         }
+      }
     } else { 
       INFO("MIB decoded #%d SFN: %d\n", q->pbch_decoded, q->mib.sfn);
     }