added preamble length field to prach

srslte/include/srslte/phch/prach.h

@@ -65,6 +65,7 @@ typedef struct SRSLTE_API {
   uint32_t N_cs;  // Cyclic shift size
   uint32_t N_seq; // Preamble length
   float    T_seq; // Preamble length in seconds
+  float    T_tot; // Total sequence length in seconds
   uint32_t N_cp;  // Cyclic prefix length
 
   // Generated tables

srslte/lib/phch/prach.c

@@ -461,6 +461,7 @@ int srslte_prach_init(srslte_prach_t *p,
     p->N_seq = prach_Tseq[p->f]*p->N_ifft_ul/2048;
     p->N_cp  = prach_Tcp[p->f]*p->N_ifft_ul/2048;
     p->T_seq = prach_Tseq[p->f]*SRSLTE_LTE_TS;
+    p->T_tot = (prach_Tseq[p->f]+prach_Tcp[p->f])*SRSLTE_LTE_TS;
     
     ret = SRSLTE_SUCCESS;
   } else {