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applying last dlsim fix to dlsim_tm4

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This commit is contained in:
Florian Kaltenberger
2017-02-08 12:03:41 +01:00
parent d3b4251053
commit ce465e503a
1 changed files with 3 additions and 2 deletions
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openair1/SIMULATION/LTE_PHY/dlsim_tm4.c
+3 -2
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@@ -3316,8 +3316,9 @@ int main(int argc, char **argv)
}
//AWGN
// This is the SNR on the PDSCH for OFDM symbols without pilots -> rho_A
sigma2_dB = 10*log10((double)tx_lev) +10*log10((double)eNB->frame_parms.ofdm_symbol_size/(double)(NB_RB*12)) - SNR - get_pa_dB(eNB->pdsch_config_dedicated);
// tx_lev is the average energy over the whole subframe
// but SNR should be better defined wrt the energy in the reference symbols
sigma2_dB = 10*log10((double)tx_lev) +10*log10((double)eNB->frame_parms.ofdm_symbol_size/(double)(eNB->frame_parms.N_RB_DL*12)) - SNR;
sigma2 = pow(10,sigma2_dB/10);
if (n_frames==1)
printf("Sigma2 %f (sigma2_dB %f,%f,%f )\n",sigma2,sigma2_dB,10*log10((double)eNB->frame_parms.ofdm_symbol_size/(double)(NB_RB*12)),get_pa_dB(eNB->pdsch_config_dedicated));