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Commit 577d62c6 authored by lukashov's avatar lukashov
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Changing round trial conditions in dlsim.

parent 5fda0110
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Showing with 44 additions and 21 deletions
openair1/PHY/LTE_TRANSPORT/dci_tools.c
View file @ 577d62c6
......@@ -1523,9 +1523,7 @@ int generate_eNB_dlsch_params_from_dci(int frame,
dlsch0_harq->rb_alloc);
dlsch1_harq->rb_alloc[0] = dlsch0_harq->rb_alloc[0];
dlsch0_harq->nb_rb = conv_nprb(rah,
rballoc,
frame_parms->N_RB_DL);
dlsch0_harq->nb_rb = conv_nprb(rah, rballoc, frame_parms->N_RB_DL);
dlsch1_harq->nb_rb = dlsch0_harq->nb_rb;
if (dlsch0_harq->nb_rb == 0)
......
openair1/SIMULATION/LTE_PHY/dlsim.c
View file @ 577d62c6
......@@ -169,6 +169,12 @@ int main(int argc, char **argv)
unsigned char *input_buffer0[2],*input_buffer1[2];
unsigned short input_buffer_length0,input_buffer_length1;
/* A variable "ret" is a nuumber of turbo iterations, that are performed in the turbo-decoder for each CW.
The decoder checks CRC, and if CRC test fails, it increments "ret". Ret is between 1 and 4, where 4 is for
the max number of turbo iterations. If the CRC is passed, ret is equal to a current iteration.
This is done separately for each CW inside decoding process.
Again: this is not a HARQ retransmission!*/
unsigned int ret[2];
unsigned int coded_bits_per_codeword[2],nsymb,dci_cnt,tbs[2];
......@@ -984,7 +990,7 @@ n(tikz_fname,"w");
for (k=0; k<n_users; k++) {
// Create transport channel structures for 2 transport blocks (MIMO)
for (i=0; i<2; i++) {
for (i=0; i<2; i++) { //i is a CW
PHY_vars_eNB->dlsch_eNB[k][i] = new_eNB_dlsch(Kmimo,8,Nsoft,N_RB_DL,0);
if (!PHY_vars_eNB->dlsch_eNB[k][i]) {
......@@ -2053,7 +2059,9 @@ n(tikz_fname,"w");
for (i=0; i<4; i++) {
errs[0][i]=0;
errs[1][i]=0;
/*Let see, how it will work, if */
round_trials[i] = 0;
// round_trials_1[i] = 0;
}
dci_errors=0;
//avg_ber = 0;
......@@ -2109,7 +2117,7 @@ n(tikz_fname,"w");
initialize(&time_vector_rx_dec);
for (trials = 0;trials<n_frames;trials++) {
// printf("Trial %d\n",trials);
//printf("Trial %d\n",trials);
fflush(stdout);
round=0;
for (i=0; i<frame_parms->nb_antennas_tx; i++) {
......@@ -2120,10 +2128,21 @@ n(tikz_fname,"w");
ret[0] = PHY_vars_UE->dlsch_ue[0][0]->max_turbo_iterations+1;
ret[1] = PHY_vars_UE->dlsch_ue[0][0]->max_turbo_iterations+1;
while ((round < num_rounds) && (ret[0] > PHY_vars_UE->dlsch_ue[0][0]->max_turbo_iterations)) {
//printf("Trial %d, round %d\n",trials,round);
/*This condition indicates, that the round_trials must go on, while CRC keeps failing at
least for one of the CW and round < num_rounds. This also means that round_trials is a unique
variable for both CW*/
while ((round < num_rounds) && ((ret[0] > PHY_vars_UE->dlsch_ue[0][0]->max_turbo_iterations) \
|| (ret[1] > PHY_vars_UE->dlsch_ue[0][0]->max_turbo_iterations))) {
//printf("Trial %d, round %d , ret[0] %d, ret[1] %d, round_trials %d\n",trials,round, ret[0], ret[1], round_trials[round]);
//printf("round_trials %d round %d\n", round_trials[round], round);
round_trials[round]++;
//printf("round_trials %d round %d\n", round_trials[round], round);
if (transmission_mode == 4 || transmission_mode == 5 || transmission_mode == 6)
pmi_feedback=1;
else
......@@ -2642,6 +2661,7 @@ n(tikz_fname,"w");
((DCI2_5MHz_2A_FDD_t *)&DLSCH_alloc_pdu_1[0])->rv1 = 1;
((DCI2_5MHz_2A_FDD_t *)&DLSCH_alloc_pdu_1[0])->ndi2 = trials&1;
((DCI2_5MHz_2A_FDD_t *)&DLSCH_alloc_pdu_1[0])->rv2 = round&3;
//change tpmi
}
memcpy(&dci_alloc[0].dci_pdu[0],&DLSCH_alloc_pdu_1[0],sizeof(DCI2_5MHz_2A_FDD_t));
break;
......@@ -3192,7 +3212,7 @@ n(tikz_fname,"w");
dci_alloc_rx,1,
eNB_id,
subframe);
//printf("dci_cnt %d\n",dci_cnt);
printf("dci_cnt %d\n",dci_cnt);
if (dci_cnt==0) {
dlsch_active = 0;
......@@ -3427,6 +3447,7 @@ n(tikz_fname,"w");
}
for (cw_non_sic=0; cw_non_sic<cw_to_decode_interf; cw_non_sic++){
PHY_vars_UE->dlsch_ue[0][cw_non_sic]->rnti = (common_flag==0) ? n_rnti: SI_RNTI;
coded_bits_per_codeword[cw_non_sic] = get_G(&PHY_vars_eNB->lte_frame_parms,
PHY_vars_eNB->dlsch_eNB[0][cw_non_sic]->harq_processes[0]->nb_rb,
......@@ -3435,15 +3456,19 @@ n(tikz_fname,"w");
PHY_vars_eNB->dlsch_eNB[0][cw_non_sic]->harq_processes[0]->Nl,
num_pdcch_symbols,
0,subframe);
PHY_vars_UE->dlsch_ue[0][cw_non_sic]->harq_processes[PHY_vars_UE->dlsch_ue[0][cw_non_sic]->current_harq_pid]->G = coded_bits_per_codeword[cw_non_sic];
PHY_vars_UE->dlsch_ue[0][cw_non_sic]->harq_processes[PHY_vars_UE->dlsch_ue[0][cw_non_sic]->current_harq_pid]->Qm = get_Qm(PHY_vars_eNB->dlsch_eNB[0][cw_non_sic]->harq_processes[0]->mcs);
if (n_frames==2) {
if (n_frames==1) {
printf("Kmimo=%d, cw=%d, G=%d, TBS=%d\n",Kmimo,cw_non_sic,coded_bits_per_codeword[cw_non_sic],
PHY_vars_UE->dlsch_ue[0][cw_non_sic]->harq_processes[PHY_vars_UE->dlsch_ue[0][cw_non_sic]->current_harq_pid]->TBS);
// calculate uncoded BER
uncoded_ber_bit = (short*) malloc(sizeof(short)*coded_bits_per_codeword[cw_non_sic]);
AssertFatal(uncoded_ber_bit, "uncoded_ber_bit==NULL");
sprintf(fname,"dlsch%d_rxF_r%d_cw%d_llr.m",eNB_id,round, cw_non_sic);
sprintf(vname,"dl%d_r%d_cw%d_llr",eNB_id,round, cw_non_sic);
write_output(fname,vname, PHY_vars_UE->lte_ue_pdsch_vars[0]->llr[cw_non_sic],coded_bits_per_codeword[cw_non_sic],1,0);
......@@ -3452,6 +3477,7 @@ n(tikz_fname,"w");
write_output(fname, vname,PHY_vars_eNB->dlsch_eNB[0][cw_non_sic]->harq_processes[0]->e,coded_bits_per_codeword[cw_non_sic],1,4);
uncoded_ber=0;
printf("trials=%d\n", trials);
for (i=0;i<coded_bits_per_codeword[cw_non_sic];i++)
if (PHY_vars_eNB->dlsch_eNB[0][cw_non_sic]->harq_processes[0]->e[i] != (PHY_vars_UE->lte_ue_pdsch_vars[0]->llr[cw_non_sic][i]<0)) {
uncoded_ber_bit[i] = 1;
......@@ -3495,7 +3521,7 @@ n(tikz_fname,"w");
stop_meas(&PHY_vars_UE->dlsch_decoding_stats);
if (ret[cw_non_sic] <= PHY_vars_UE->dlsch_ue[0][cw_non_sic]->max_turbo_iterations ) {
if (ret[cw_non_sic] <= PHY_vars_UE->dlsch_ue[0][cw_non_sic]->max_turbo_iterations ) { //If CRC for the first CW did not fail
if (cw_non_sic==0) {
avg_iter[0] += ret[0];
iter_trials[0]++;
......@@ -3623,7 +3649,6 @@ n(tikz_fname,"w");
if ((PHY_vars_UE->dlsch_ue[eNB_id][0]->harq_processes[PHY_vars_UE->dlsch_ue[eNB_id][0]->current_harq_pid]->mimo_mode >=DUALSTREAM_UNIFORM_PRECODING1) &&
(PHY_vars_UE->dlsch_ue[eNB_id][0]->harq_processes[PHY_vars_UE->dlsch_ue[eNB_id][0]->current_harq_pid]->mimo_mode <=DUALSTREAM_PUSCH_PRECODING) &&
rx_type==rx_SIC_dual_stream) {
remove("rho_rho_in_llr.m");
// for (round = 0 ; round < 1 ; round++) {
dlsch0_ue_harq = PHY_vars_UE->dlsch_ue[eNB_id][0]->harq_processes[PHY_vars_UE->dlsch_ue[eNB_id][0]->current_harq_pid];
......@@ -3730,7 +3755,7 @@ n(tikz_fname,"w");
get_Qm(PHY_vars_eNB->dlsch_eNB[0][0]->harq_processes[0]->mcs),
PHY_vars_UE->dlsch_ue[eNB_id][0]);
break;
}// round
}
// write_output("rxdata_llr1.m","llr1", PHY_vars_UE->lte_ue_pdsch_vars[eNB_id]->llr[1],re_allocated*2,1,0);
......
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