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Enabling noise in the whole subframe and computing N0_total.

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This commit is contained in:
Elena_Lukashova
2017-03-10 16:16:54 +01:00
parent b2c57f42fc
commit e704a3155c
1 changed files with 16 additions and 3 deletions
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openair1/SIMULATION/LTE_PHY/dlsim_tm4.c
+16 -3
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@@ -3308,13 +3308,23 @@ int main(int argc, char **argv)
}
//AWGN
// 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;
// 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));
for (i=0; i<10*frame_parms->samples_per_tti; i++) {
for (aa=0;aa<eNB->frame_parms.nb_antennas_rx;aa++) {
//printf("s_re[0][%d]=> %f , r_re[0][%d]=> %f\n",i,s_re[aa][i],i,r_re[aa][i]);
((short*) UE->common_vars.rxdata[aa])[2*i] =
(short) (sqrt(sigma2/2)*gaussdouble(0.0,1.0));
((short*) UE->common_vars.rxdata[aa])[2*i+1] =
(short) (sqrt(sigma2/2)*gaussdouble(0.0,1.0));
}
}
for (i=0; i<2*frame_parms->samples_per_tti; i++) {
for (aa=0;aa<eNB->frame_parms.nb_antennas_rx;aa++) {
//printf("s_re[0][%d]=> %f , r_re[0][%d]=> %f\n",i,s_re[aa][i],i,r_re[aa][i]);
@@ -3433,6 +3443,9 @@ int main(int argc, char **argv)
}
if ((Ns==((2*subframe))) && (l==0)) {
ue_rrc_measurements(UE,
0,
0);
lte_ue_measurements(UE,
subframe*UE->frame_parms.samples_per_tti,
1,