Fixed srslte_static link with volk when disableMEX. Calibrated PSS-based noise estimation

matlab/tests/equalizer_test.m

@@ -12,7 +12,7 @@ Nrealizations=10;
 w1=0.1;
 w2=0.3;
 
-enb.NDLRB = 50;                 % Number of resource blocks
+enb.NDLRB = 25;                 % Number of resource blocks
 
 enb.CellRefP = 1;               % One transmit antenna port
 enb.NCellID = 0;                % Cell ID

srslte/lib/CMakeLists.txt

@@ -92,7 +92,9 @@ endif(RF_FOUND)
 
 if(VOLK_FOUND)
   target_link_libraries(srslte ${VOLK_LIBRARIES})
-  target_link_libraries(srslte_static ${VOLK_LIBRARIES})
+  if(NOT DisableMEX)
+    target_link_libraries(srslte_static ${VOLK_LIBRARIES})
+  endif(NOT DisableMEX)
 endif(VOLK_FOUND)
 
 INSTALL(TARGETS srslte DESTINATION ${LIBRARY_DIR})

srslte/lib/ch_estimation/chest_dl.c

@@ -205,7 +205,7 @@ static float estimate_noise_pss(srslte_chest_dl_t *q, cf_t *input, cf_t *ce)
   srslte_vec_sub_ccc(q->tmp_pss_noisy, q->tmp_pss, q->tmp_pss_noisy, SRSLTE_PSS_LEN);
   
   /* Compute average power */
-  float power = q->cell.nof_ports*srslte_vec_avg_power_cf(q->tmp_pss_noisy, SRSLTE_PSS_LEN);
+  float power = q->cell.nof_ports*srslte_vec_avg_power_cf(q->tmp_pss_noisy, SRSLTE_PSS_LEN)/sqrt(2);
   return power; 
 }