void *scope_thread(void *arg) {
int16_t prach_corr[1024], i;
char stats_buffer[16384];
//FILE *UE_stats, *eNB_stats;
int len=0;
struct sched_param sched_param;
sched_param.sched_priority = sched_get_priority_min(SCHED_FIFO)+1;
sched_setscheduler(0, SCHED_FIFO,&sched_param);
printf("Scope thread has priority %d\n",sched_param.sched_priority);
/*
if (UE_flag==1)
UE_stats = fopen("UE_stats.txt", "w");
else
eNB_stats = fopen("eNB_stats.txt", "w");
*/
while (!oai_exit) {
if (UE_flag==1) {
len = dump_ue_stats (PHY_vars_UE_g[0], stats_buffer, 0, mode,rx_input_level_dBm);
fl_set_object_label(form_stats->stats_text, stats_buffer);
//rewind (UE_stats);
//fwrite (stats_buffer, 1, len, UE_stats);
phy_scope_UE(form_ue[UE_id],
PHY_vars_UE_g[UE_id],
eNB_id,
UE_id,7);
} else {
len = dump_eNB_stats (PHY_vars_eNB_g[0], stats_buffer, 0);
fl_set_object_label(form_stats->stats_text, stats_buffer);
//rewind (eNB_stats);
//fwrite (stats_buffer, 1, len, eNB_stats);
for(UE_id=0;UE_id<scope_enb_num_ue;UE_id++) {
phy_scope_eNB(form_enb[UE_id],
PHY_vars_eNB_g[eNB_id],
UE_id);
}
}
//printf("doing forms\n");
usleep(100000);
}
//fclose (UE_stats);
//fclose (eNB_stats);
pthread_exit((void*)arg);
}
int main(int argc, char **argv)
{
char c;
int i,l,aa;
double sigma2, sigma2_dB=0,SNR,snr0=-2.0,snr1;
int **txdata;
double s_re[2][30720*2],s_im[2][30720*2],r_re[2][30720*2],r_im[2][30720*2];
double iqim=0.0;
// int subframe_offset;
uint8_t subframe=0;
#ifdef XFORMS
FD_lte_phy_scope_ue *form_ue;
char title[255];
#endif
int trial, n_errors_common=0,n_errors_ul=0,n_errors_dl=0,n_errors_cfi=0,n_errors_hi=0;
unsigned char eNb_id = 0;
uint8_t awgn_flag=0;
int n_frames=1;
channel_desc_t *eNB2UE;
uint32_t nsymb,tx_lev,tx_lev_dB=0,num_pdcch_symbols=3;
uint8_t extended_prefix_flag=0,transmission_mode=1,n_tx=1,n_rx=1;
uint16_t Nid_cell=0;
// int8_t interf1=-128,interf2=-128;
uint8_t dci_cnt=0;
LTE_DL_FRAME_PARMS *frame_parms;
uint8_t log2L=2, log2Lcommon=2;
DCI_format_t format_selector[MAX_NUM_DCI];
uint8_t num_dci=0;
uint8_t numCCE,common_active=0,ul_active=0,dl_active=0;
uint32_t n_trials_common=0,n_trials_ul=0,n_trials_dl=0,false_detection_cnt=0;
uint8_t common_rx,ul_rx,dl_rx;
uint8_t tdd_config=3;
FILE *input_fd=NULL;
char input_val_str[50],input_val_str2[50];
uint16_t n_rnti=0x1234;
uint8_t osf=1,N_RB_DL=25;
SCM_t channel_model=Rayleigh1_anticorr;
DCI_ALLOC_t dci_alloc_rx[8];
int ret;
uint8_t harq_pid;
uint8_t phich_ACK;
uint8_t num_phich_interf = 0;
lte_frame_type_t frame_type=TDD;
// int re_offset;
// uint32_t *txptr;
int aarx;
int k;
uint32_t perfect_ce = 0;
int CCE_table[800];
number_of_cards = 1;
cpuf = get_cpu_freq_GHz();
logInit();
while ((c = getopt (argc, argv, "hapFg:R:c:n:s:x:y:z:L:M:N:I:f:i:S:P:Y")) != -1) {
switch (c) {
case 'a':
printf("Running AWGN simulation\n");
awgn_flag = 1;
break;
case 'R':
N_RB_DL = atoi(optarg);
break;
case 'F':
frame_type = FDD;
break;
case 'c':
tdd_config=atoi(optarg);
if (tdd_config>6) {
printf("Illegal tdd_config %d (should be 0-6)\n",tdd_config);
exit(-1);
}
break;
case 'g':
switch((char)*optarg) {
case 'A':
channel_model=SCM_A;
break;
case 'B':
channel_model=SCM_B;
break;
case 'C':
channel_model=SCM_C;
break;
case 'D':
channel_model=SCM_D;
break;
case 'E':
channel_model=EPA;
break;
case 'F':
channel_model=EVA;
break;
case 'G':
channel_model=ETU;
break;
default:
printf("Unsupported channel model!\n");
exit(-1);
}
break;
/*
case 'i':
interf1=atoi(optarg);
break;
case 'j':
interf2=atoi(optarg);
break;
*/
case 'n':
n_frames = atoi(optarg);
break;
case 's':
snr0 = atoi(optarg);
break;
case 'p':
extended_prefix_flag=1;
break;
case 'x':
transmission_mode=atoi(optarg);
if ((transmission_mode!=1) &&
(transmission_mode!=2) &&
(transmission_mode!=6)) {
printf("Unsupported transmission mode %d\n",transmission_mode);
exit(-1);
}
break;
case 'y':
n_tx=atoi(optarg);
if ((n_tx==0) || (n_tx>2)) {
printf("Unsupported number of tx antennas %d\n",n_tx);
exit(-1);
}
break;
case 'z':
n_rx=atoi(optarg);
if ((n_rx==0) || (n_rx>2)) {
printf("Unsupported number of rx antennas %d\n",n_rx);
exit(-1);
}
break;
case 'S':
subframe=atoi(optarg);
break;
case 'L':
log2L=atoi(optarg);
if ((log2L!=0)&&
(log2L!=1)&&
(log2L!=2)&&
(log2L!=3)) {
printf("Unsupported DCI aggregation level %d (should be 0,1,2,3)\n",log2L);
exit(-1);
}
break;
case 'M':
log2Lcommon=atoi(optarg);
if ((log2Lcommon!=2)&&
(log2Lcommon!=3)) {
printf("Unsupported Common DCI aggregation level %d (should be 2 or 3)\n",log2Lcommon);
exit(-1);
}
break;
case 'N':
format_selector[num_dci] = (DCI_format_t) atoi(optarg);
if ((format_selector[num_dci]<format0) || (format_selector[num_dci] > format1A)) {
printf("only formats 0, 1, and 1A supported for the moment\n");
exit(-1);
}
if (format_selector[num_dci]==format0) ul_active=1;
if (format_selector[num_dci]==format1A) common_active=1;
if (format_selector[num_dci]==format1) dl_active=1;
num_dci++;
break;
case 'O':
osf = atoi(optarg);
break;
case 'I':
Nid_cell = atoi(optarg);
break;
case 'f':
input_fd = fopen(optarg,"r");
if (input_fd==NULL) {
printf("Problem with filename %s\n",optarg);
exit(-1);
}
break;
case 'i':
n_rnti=atoi(optarg);
break;
case 'P':
num_phich_interf=atoi(optarg);
break;
case 'Y':
perfect_ce = 1;
break;
case 'h':
printf("%s -h(elp) -a(wgn on) -c tdd_config -n n_frames -r RiceanFactor -s snr0 -t Delayspread -x transmission mode (1,2,6) -y TXant -z RXant -L AggregLevelUEspec -M AggregLevelCommonDCI -N DCIFormat\n\n",
argv[0]);
printf("-h This message\n");
printf("-a Use AWGN channel and not multipath\n");
printf("-c TDD config\n");
printf("-S Subframe number (0..9)\n");
printf("-R N_RB_DL\n");
printf("-F use FDD frame\n");
printf("-p Use extended prefix mode\n");
printf("-n Number of frames to simulate\n");
printf("-r Ricean factor (dB, 0 means Rayleigh, 100 is almost AWGN\n");
printf("-s Starting SNR, runs from SNR to SNR + 5 dB. If n_frames is 1 then just SNR is simulated\n");
printf("-t Delay spread for multipath channel\n");
printf("-x Transmission mode (1,2,6 for the moment)\n");
printf("-y Number of TX antennas used in eNB\n");
printf("-z Number of RX antennas used in UE\n");
printf("-P Number of interfering PHICH\n");
printf("-L log2 of Aggregation level for UE Specific DCI (0,1,2,3)\n");
printf("-M log2 Aggregation level for Common DCI (4,8)\n");
printf("-N Format for UE Spec DCI (0 - format0,\n");
printf(" 1 - format1,\n");
printf(" 2 - format1A,\n");
printf(" 3 - format1B_2A,\n");
printf(" 4 - format1B_4A,\n");
printf(" 5 - format1C,\n");
printf(" 6 - format1D_2A,\n");
printf(" 7 - format1D_4A,\n");
printf(" 8 - format2A_2A_L10PRB,\n");
printf(" 9 - format2A_2A_M10PRB,\n");
printf(" 10 - format2A_4A_L10PRB,\n");
printf(" 11 - format2A_4A_M10PRB,\n");
printf(" 12 - format2_2A_L10PRB,\n");
printf(" 13 - format2_2A_M10PRB,\n");
printf(" 14 - format2_4A_L10PRB,\n");
printf(" 15 - format2_4A_M10PRB\n");
printf(" 16 - format2_2D_M10PRB\n");
printf(" 17 - format2_2D_L10PRB\n");
printf(" can be called multiple times to add more than one DCI\n");
printf("-O Oversampling factor\n");
printf("-I Cell Id\n");
printf("-F Input sample stream\n");
exit(1);
break;
}
}
if ((transmission_mode>1) && (n_tx==1))
n_tx=2;
lte_param_init(n_tx,
n_tx,
n_rx,
transmission_mode,
extended_prefix_flag,
frame_type,
Nid_cell,
tdd_config,
N_RB_DL,
0,
osf,
perfect_ce);
#ifdef XFORMS
fl_initialize (&argc, argv, NULL, 0, 0);
form_ue = create_lte_phy_scope_ue();
sprintf (title, "LTE PHY SCOPE UE");
fl_show_form (form_ue->lte_phy_scope_ue, FL_PLACE_HOTSPOT, FL_FULLBORDER, title);
#endif
mac_xface->computeRIV = computeRIV;
mac_xface->frame_parms = &eNB->frame_parms;
// init_transport_channels(transmission_mode);
if (n_frames==1)
snr1 = snr0+.1;
else
snr1 = snr0+8.0;
printf("SNR0 %f, SNR1 %f\n",snr0,snr1);
frame_parms = &eNB->frame_parms;
printf("Getting %d dcis\n",num_dci);
get_dci(frame_parms, log2L, log2Lcommon, format_selector, num_dci, n_rnti);
txdata = eNB->common_vars.txdata[eNb_id];
nsymb = (eNB->frame_parms.Ncp == 0) ? 14 : 12;
printf("Subframe %d, FFT Size %d, Extended Prefix %d, Samples per subframe %d, Symbols per subframe %d\n",
subframe,NUMBER_OF_OFDM_CARRIERS,
eNB->frame_parms.Ncp,eNB->frame_parms.samples_per_tti,nsymb);
eNB2UE = new_channel_desc_scm(eNB->frame_parms.nb_antennas_tx,
UE->frame_parms.nb_antennas_rx,
channel_model,
N_RB2sampling_rate(eNB->frame_parms.N_RB_DL),
N_RB2channel_bandwidth(eNB->frame_parms.N_RB_DL),
0,
0,
0);
eNB_rxtx_proc_t *proc_rxtx = &eNB->proc.proc_rxtx[subframe&1];
eNB->ulsch[0] = new_eNB_ulsch(MAX_TURBO_ITERATIONS,N_RB_DL,0);
UE->ulsch[0] = new_ue_ulsch(N_RB_DL,0);
proc_rxtx->frame_tx = 0;
proc_rxtx->subframe_tx = subframe;
if (input_fd==NULL) {
printf("No input file, so starting TX\n");
} else {
i=0;
while (!feof(input_fd)) {
ret=fscanf(input_fd,"%s %s",input_val_str,input_val_str2);//&input_val1,&input_val2);
if (ret != 2) {
printf("%s:%d:%s: fscanf error, exiting\n", __FILE__, __LINE__, __FUNCTION__);
exit(1);
}
if ((i%4)==0) {
((short*)txdata[0])[i/2] = (short)((1<<15)*strtod(input_val_str,NULL));
((short*)txdata[0])[(i/2)+1] = (short)((1<<15)*strtod(input_val_str2,NULL));
if ((i/4)<100)
printf("sample %d => %e + j%e (%d +j%d)\n",i/4,strtod(input_val_str,NULL),strtod(input_val_str2,NULL),((short*)txdata[0])[i/4],((short*)txdata[0])[(i/4)+1]);//1,input_val2,);
}
i++;
if (i>(4*FRAME_LENGTH_SAMPLES))
break;
}
printf("Read in %d samples\n",i/4);
write_output("txsig0.m","txs0", txdata[0],FRAME_LENGTH_COMPLEX_SAMPLES,1,1);
// write_output("txsig1.m","txs1", txdata[1],FRAME_LENGTH_COMPLEX_SAMPLES,1,1);
tx_lev = signal_energy(&txdata[0][0],
OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES);
tx_lev_dB = (unsigned int) dB_fixed(tx_lev);
}
UE->UE_mode[0] = PUSCH;
// nCCE_max = get_nCCE(3,&eNB->frame_parms,get_mi(&eNB->frame_parms,0));
//printf("nCCE_max %d\n",nCCE_max);
//printf("num_phich interferers %d\n",num_phich_interf);
for (SNR=snr0; SNR<snr1; SNR+=0.2) {
n_errors_common = 0;
n_errors_ul = 0;
n_errors_dl = 0;
n_errors_cfi = 0;
n_errors_hi = 0;
n_trials_common=0;
n_trials_ul=0;
n_trials_dl=0;
for (trial=0; trial<n_frames; trial++) {
// printf("DCI (SF %d): txdataF %p (0 %p)\n",subframe,&eNB->common_vars.txdataF[eNb_id][aa][512*14*subframe],&eNB->common_vars.txdataF[eNb_id][aa][0]);
for (aa=0; aa<eNB->frame_parms.nb_antennas_tx; aa++) {
memset(&eNB->common_vars.txdataF[eNb_id][aa][0],0,FRAME_LENGTH_COMPLEX_SAMPLES_NO_PREFIX*sizeof(int32_t));
}
generate_pilots_slot(eNB,
eNB->common_vars.txdataF[eNb_id],
AMP, //1024,
(subframe*2),
0);
generate_pilots_slot(eNB,
eNB->common_vars.txdataF[eNb_id],
AMP, //1024,
(subframe*2)+1,
0);
if (input_fd == NULL) {
numCCE=0;
n_trials_common++;
common_active = 1;
if (eNB->frame_parms.N_RB_DL >= 50) {
if (ul_active==1) {
n_trials_ul++;
}
}
if (eNB->frame_parms.N_RB_DL >= 25) {
if (dl_active==1) {
n_trials_dl++;
}
}
num_pdcch_symbols = get_num_pdcch_symbols(DCI_pdu.Num_dci,
DCI_pdu.dci_alloc, frame_parms, subframe);
numCCE = get_nCCE(num_pdcch_symbols,&eNB->frame_parms,get_mi(&eNB->frame_parms,subframe));
if (n_frames==1) {
printf("num_dci %d, num_pddch_symbols %d, nCCE %d\n",
DCI_pdu.Num_dci,
num_pdcch_symbols,numCCE);
}
// apply RNTI-based nCCE allocation
memset(CCE_table,0,800*sizeof(int));
for (i = 0; i < DCI_pdu.Num_dci; i++) {
// SI RNTI
if (DCI_pdu.dci_alloc[i].rnti == SI_RNTI) {
DCI_pdu.dci_alloc[i].firstCCE = get_nCCE_offset_l1(CCE_table,
1<<DCI_pdu.dci_alloc[i].L,
numCCE,
1,
SI_RNTI,
subframe);
}
// RA RNTI
else if (DCI_pdu.dci_alloc[i].ra_flag == 1) {
DCI_pdu.dci_alloc[i].firstCCE = get_nCCE_offset_l1(CCE_table,
1<<DCI_pdu.dci_alloc[i].L,
numCCE,
1,
DCI_pdu.dci_alloc[i].rnti,
subframe);
}
// C RNTI
else {
DCI_pdu.dci_alloc[i].firstCCE = get_nCCE_offset_l1(CCE_table,
1<<DCI_pdu.dci_alloc[i].L,
numCCE,
0,
DCI_pdu.dci_alloc[i].rnti,
subframe);
}
if (n_frames==1)
printf("dci %d: rnti 0x%x, format %d, L %d (aggreg %d), nCCE %d/%d dci_length %d\n",i,DCI_pdu.dci_alloc[i].rnti, DCI_pdu.dci_alloc[i].format,
DCI_pdu.dci_alloc[i].L, 1<<DCI_pdu.dci_alloc[i].L, DCI_pdu.dci_alloc[i].firstCCE, numCCE, DCI_pdu.dci_alloc[i].dci_length);
if (DCI_pdu.dci_alloc[i].firstCCE==-1)
exit(-1);
}
num_pdcch_symbols = generate_dci_top(DCI_pdu.Num_dci,
DCI_pdu.dci_alloc,
0,
AMP,
&eNB->frame_parms,
eNB->common_vars.txdataF[eNb_id],
subframe);
if (n_frames==1)
printf("num_pdcch_symbols at TX %d\n",num_pdcch_symbols);
if (is_phich_subframe(&eNB->frame_parms,subframe)) {
if (n_frames==1)
printf("generating PHICH\n");
harq_pid = phich_subframe_to_harq_pid(&eNB->frame_parms, proc_rxtx->frame_tx, subframe);
phich_ACK = taus()&1;
eNB->ulsch[0]->harq_processes[harq_pid]->phich_active = 1;
eNB->ulsch[0]->harq_processes[harq_pid]->first_rb = 0;
eNB->ulsch[0]->harq_processes[harq_pid]->n_DMRS = 0;
eNB->ulsch[0]->harq_processes[harq_pid]->phich_ACK = phich_ACK;
eNB->ulsch[0]->harq_processes[harq_pid]->dci_alloc = 1;
UE->ulsch[0]->harq_processes[harq_pid]->first_rb = 0;
UE->ulsch[0]->harq_processes[harq_pid]->n_DMRS = 0;
generate_phich_top(eNB,proc_rxtx,AMP,0);
// generate 3 interfering PHICH
if (num_phich_interf>0) {
eNB->ulsch[0]->harq_processes[harq_pid]->first_rb = 4;
generate_phich_top(eNB,proc_rxtx,1024,0);
}
if (num_phich_interf>1) {
eNB->ulsch[0]->harq_processes[harq_pid]->first_rb = 8;
eNB->ulsch[0]->harq_processes[harq_pid]->n_DMRS = 1;
generate_phich_top(eNB,proc_rxtx,1024,0);
}
if (num_phich_interf>2) {
eNB->ulsch[0]->harq_processes[harq_pid]->first_rb = 12;
eNB->ulsch[0]->harq_processes[harq_pid]->n_DMRS = 1;
generate_phich_top(eNB,proc_rxtx,1024,0);
}
eNB->ulsch[0]->harq_processes[harq_pid]->first_rb = 0;
}
// write_output("pilotsF.m","rsF",txdataF[0],lte_eNB->frame_parms.ofdm_symbol_size,1,1);
if (n_frames==1) {
write_output("txsigF0.m","txsF0", eNB->common_vars.txdataF[eNb_id][0],4*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES_NO_PREFIX,1,1);
if (eNB->frame_parms.nb_antenna_ports_eNB > 1)
write_output("txsigF1.m","txsF1", eNB->common_vars.txdataF[eNb_id][1],4*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES_NO_PREFIX,1,1);
}
tx_lev = 0;
for (aa=0; aa<eNB->frame_parms.nb_antenna_ports_eNB; aa++) {
if (eNB->frame_parms.Ncp == 1)
PHY_ofdm_mod(&eNB->common_vars.txdataF[eNb_id][aa][subframe*nsymb*eNB->frame_parms.ofdm_symbol_size], // input,
&txdata[aa][subframe*eNB->frame_parms.samples_per_tti], // output
eNB->frame_parms.ofdm_symbol_size,
2*nsymb, // number of symbols
eNB->frame_parms.nb_prefix_samples, // number of prefix samples
CYCLIC_PREFIX);
else {
normal_prefix_mod(&eNB->common_vars.txdataF[eNb_id][aa][subframe*nsymb*eNB->frame_parms.ofdm_symbol_size],
&txdata[aa][subframe*eNB->frame_parms.samples_per_tti],
2*nsymb,
frame_parms);
}
tx_lev += signal_energy(&txdata[aa][subframe*eNB->frame_parms.samples_per_tti],
eNB->frame_parms.ofdm_symbol_size);
}
tx_lev_dB = (unsigned int) dB_fixed(tx_lev);
}
for (i=0; i<2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES; i++) {
for (aa=0; aa<eNB->frame_parms.nb_antenna_ports_eNB; aa++) {
if (awgn_flag == 0) {
s_re[aa][i] = ((double)(((short *)txdata[aa]))[(2*subframe*UE->frame_parms.samples_per_tti) + (i<<1)]);
s_im[aa][i] = ((double)(((short *)txdata[aa]))[(2*subframe*UE->frame_parms.samples_per_tti) + (i<<1)+1]);
} else {
for (aarx=0; aarx<UE->frame_parms.nb_antennas_rx; aarx++) {
if (aa==0) {
r_re[aarx][i] = ((double)(((short *)txdata[aa]))[(2*subframe*UE->frame_parms.samples_per_tti) + (i<<1)]);
r_im[aarx][i] = ((double)(((short *)txdata[aa]))[(2*subframe*UE->frame_parms.samples_per_tti) + (i<<1)+1]);
} else {
r_re[aarx][i] += ((double)(((short *)txdata[aa]))[(2*subframe*UE->frame_parms.samples_per_tti) + (i<<1)]);
r_im[aarx][i] += ((double)(((short *)txdata[aa]))[(2*subframe*UE->frame_parms.samples_per_tti) + (i<<1)+1]);
}
}
}
}
}
if (awgn_flag == 0) {
multipath_channel(eNB2UE,s_re,s_im,r_re,r_im,
2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES,0);
}
//write_output("channel0.m","chan0",ch[0],channel_length,1,8);
// scale by path_loss = NOW - P_noise
//sigma2 = pow(10,sigma2_dB/10);
//N0W = -95.87;
sigma2_dB = (double)tx_lev_dB +10*log10((double)eNB->frame_parms.ofdm_symbol_size/(double)(12*eNB->frame_parms.N_RB_DL)) - SNR;
if (n_frames==1)
printf("sigma2_dB %f (SNR %f dB) tx_lev_dB %d\n",sigma2_dB,SNR,tx_lev_dB);
//AWGN
sigma2 = pow(10,sigma2_dB/10);
// printf("Sigma2 %f (sigma2_dB %f)\n",sigma2,sigma2_dB);
for (i=0; i<2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES; i++) {
for (aa=0; aa<UE->frame_parms.nb_antennas_rx; aa++) {
((short*) UE->common_vars.rxdata[aa])[(2*subframe*UE->frame_parms.samples_per_tti) + 2*i] = (short) (.667*(r_re[aa][i] + sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
((short*) UE->common_vars.rxdata[aa])[(2*subframe*UE->frame_parms.samples_per_tti) + 2*i+1] = (short) (.667*(r_im[aa][i] + (iqim*r_re[aa][i]) + sqrt(sigma2/2)*gaussdouble(
0.0,1.0)));
/*
((short*)UE->common_vars.rxdata[aa])[(2*subframe*UE->frame_parms.samples_per_tti) + 2*i] =
((short*)txdata[aa])[(2*subframe*UE->frame_parms.samples_per_tti) + 2*i];
((short*)UE->common_vars.rxdata[aa])[(2*subframe*UE->frame_parms.samples_per_tti) + 2*i+1] =
((short*)txdata[aa])[(2*subframe*UE->frame_parms.samples_per_tti) + 2*i+1];
*/
}
}
// UE receiver
for (l=0; l<eNB->frame_parms.symbols_per_tti; l++) {
// subframe_offset = (l/eNB->frame_parms.symbols_per_tti)*eNB->frame_parms.samples_per_tti;
// printf("subframe_offset = %d\n",subframe_offset);
slot_fep(UE,
l%(eNB->frame_parms.symbols_per_tti/2),
(2*subframe)+(l/(eNB->frame_parms.symbols_per_tti/2)),
0,
0,
0);
if (UE->perfect_ce == 1) {
if (awgn_flag==0) {
// fill in perfect channel estimates
freq_channel(eNB2UE,UE->frame_parms.N_RB_DL,12*UE->frame_parms.N_RB_DL + 1);
//write_output("channel.m","ch",desc1->ch[0],desc1->channel_length,1,8);
//write_output("channelF.m","chF",desc1->chF[0],nb_samples,1,8);
for(k=0; k<NUMBER_OF_eNB_MAX; k++) {
for(aa=0; aa<frame_parms->nb_antennas_tx; aa++) {
for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
for (i=0; i<frame_parms->N_RB_DL*12; i++) {
((int16_t *) UE->common_vars.common_vars_rx_data_per_thread[subframe&0x1].dl_ch_estimates[k][(aa<<1)+aarx])[2*i+(l*frame_parms->ofdm_symbol_size+LTE_CE_FILTER_LENGTH)*2]=(int16_t)(
eNB2UE->chF[aarx+(aa*frame_parms->nb_antennas_rx)][i].x*AMP);
((int16_t *) UE->common_vars.common_vars_rx_data_per_thread[subframe&0x1].dl_ch_estimates[k][(aa<<1)+aarx])[2*i+1+(l*frame_parms->ofdm_symbol_size+LTE_CE_FILTER_LENGTH)*2]=(int16_t)(
eNB2UE->chF[aarx+(aa*frame_parms->nb_antennas_rx)][i].y*AMP);
}
}
}
}
} else {
for(aa=0; aa<frame_parms->nb_antenna_ports_eNB; aa++) {
for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
for (i=0; i<frame_parms->N_RB_DL*12; i++) {
((int16_t *) UE->common_vars.common_vars_rx_data_per_thread[subframe&0x1].dl_ch_estimates[0][(aa<<1)+aarx])[2*i+(l*frame_parms->ofdm_symbol_size+LTE_CE_FILTER_LENGTH)*2]=(short)(AMP);
((int16_t *) UE->common_vars.common_vars_rx_data_per_thread[subframe&0x1].dl_ch_estimates[0][(aa<<1)+aarx])[2*i+1+(l*frame_parms->ofdm_symbol_size+LTE_CE_FILTER_LENGTH)*2]=0/2;
}
}
}
}
}
if (l==((eNB->frame_parms.Ncp==0)?4:3)) {
// write_output("H00.m","h00",&(UE->common_vars.dl_ch_estimates[0][0][0]),((frame_parms->Ncp==0)?7:6)*(eNB->frame_parms.ofdm_symbol_size),1,1);
// do PDCCH procedures here
UE->pdcch_vars[0][0]->crnti = n_rnti;
// printf("Doing RX : num_pdcch_symbols at TX %d\n",num_pdcch_symbols);
rx_pdcch(UE,
trial,
subframe,
0,
(UE->frame_parms.mode1_flag == 1) ? SISO : ALAMOUTI,
UE->high_speed_flag,
UE->is_secondary_ue);
if (is_phich_subframe(&UE->frame_parms,subframe)) {
UE->ulsch[0]->harq_processes[phich_subframe_to_harq_pid(&UE->frame_parms,0,subframe)]->status = ACTIVE;
//UE->ulsch[0]->harq_processes[phich_subframe_to_harq_pid(&UE->frame_parms,0,subframe)]->Ndi = 1;
rx_phich(UE,
&UE->proc.proc_rxtx[subframe&1],
subframe,
0);
}
// if (UE->pdcch_vars[0]->num_pdcch_symbols != num_pdcch_symbols)
// break;
dci_cnt = dci_decoding_procedure(UE,
dci_alloc_rx,1,
0,subframe);
common_rx=0;
ul_rx=0;
dl_rx=0;
if (n_frames==1) {
numCCE = get_nCCE(UE->pdcch_vars[0][0]->num_pdcch_symbols, &UE->frame_parms, get_mi(&UE->frame_parms,subframe));
for (i = 0; i < dci_cnt; i++)
printf("dci %d: rnti 0x%x, format %d, L %d, nCCE %d/%d dci_length %d\n",i, dci_alloc_rx[i].rnti, dci_alloc_rx[i].format,
dci_alloc_rx[i].L, dci_alloc_rx[i].firstCCE, numCCE, dci_alloc_rx[i].dci_length);
}
for (i=0; i<dci_cnt; i++) {
if (dci_alloc_rx[i].rnti == SI_RNTI) {
if (n_frames==1)
dump_dci(&UE->frame_parms, &dci_alloc_rx[i]);
common_rx=1;
}
if ((dci_alloc_rx[i].rnti == n_rnti) && (dci_alloc_rx[i].format == format0)) {
if (n_frames==1)
dump_dci(&UE->frame_parms, &dci_alloc_rx[i]);
ul_rx=1;
}
if ((dci_alloc_rx[i].rnti == n_rnti) && ((dci_alloc_rx[i].format == format1))) {
if (n_frames==1)
dump_dci(&UE->frame_parms, &dci_alloc_rx[i]);
dl_rx=1;
}
if ((dci_alloc_rx[i].rnti != n_rnti) && (dci_alloc_rx[i].rnti != SI_RNTI))
false_detection_cnt++;
}
if (n_frames==1)
printf("RX DCI Num %d (Common DCI %d, DL DCI %d, UL DCI %d)\n", dci_cnt, common_rx, dl_rx, ul_rx);
if ((common_rx==0)&&(common_active==1))
n_errors_common++;
if ((ul_rx==0)&&(ul_active==1)) {
n_errors_ul++;
// exit(-1);
}
if ((dl_rx==0)&&(dl_active==1)) {
n_errors_dl++;
// exit(-1);
}
if (UE->pdcch_vars[0][0]->num_pdcch_symbols != num_pdcch_symbols)
n_errors_cfi++;
/*
if (is_phich_subframe(&UE->frame_parms,subframe))
if (UE->ulsch[0]->harq_processes[phich_subframe_to_harq_pid(&UE->frame_parms, UE->frame, subframe)]->Ndi != phich_ACK)
n_errors_hi++;
*/
if (n_errors_cfi > 10)
break;
}
} // symbol loop
if (n_errors_cfi > 100)
break;
if ((n_errors_ul>1000) && (n_errors_dl>1000) && (n_errors_common>1000))
break;
#ifdef XFORMS
phy_scope_UE(form_ue,
UE,
eNb_id,0,subframe);
#endif
} //trials
if (common_active) printf("SNR %f : n_errors_common = %d/%d (%e)\n", SNR,n_errors_common,n_trials_common,(double)n_errors_common/n_trials_common);
if (ul_active==1) printf("SNR %f : n_errors_ul = %d/%d (%e)\n", SNR,n_errors_ul,n_trials_ul,(double)n_errors_ul/n_trials_ul);
if (dl_active==1) printf("SNR %f : n_errors_dl = %d/%d (%e)\n", SNR,n_errors_dl,n_trials_dl,(double)n_errors_dl/n_trials_dl);
printf("SNR %f : n_errors_cfi = %d/%d (%e)\n", SNR,n_errors_cfi,trial,(double)n_errors_cfi/trial);
printf("SNR %f : n_errors_hi = %d/%d (%e)\n", SNR,n_errors_hi,trial,(double)n_errors_hi/trial);
} // SNR
if (n_frames==1) {
write_output("txsig0.m","txs0", txdata[0],FRAME_LENGTH_COMPLEX_SAMPLES,1,1);
if (n_tx>1)
write_output("txsig1.m","txs1", txdata[1],FRAME_LENGTH_COMPLEX_SAMPLES,1,1);
write_output("rxsig0.m","rxs0", UE->common_vars.rxdata[0],10*frame_parms->samples_per_tti,1,1);
write_output("rxsigF0.m","rxsF0", UE->common_vars.common_vars_rx_data_per_thread[subframe&0x1].rxdataF[0],NUMBER_OF_OFDM_CARRIERS*2*((frame_parms->Ncp==0)?14:12),2,1);
if (n_rx>1) {
write_output("rxsig1.m","rxs1", UE->common_vars.rxdata[1],10*frame_parms->samples_per_tti,1,1);
write_output("rxsigF1.m","rxsF1", UE->common_vars.common_vars_rx_data_per_thread[subframe&0x1].rxdataF[1],NUMBER_OF_OFDM_CARRIERS*2*((frame_parms->Ncp==0)?14:12),2,1);
}
write_output("H00.m","h00",&(UE->common_vars.common_vars_rx_data_per_thread[subframe&0x1].dl_ch_estimates[0][0][0]),((frame_parms->Ncp==0)?7:6)*(eNB->frame_parms.ofdm_symbol_size),1,1);
if (n_tx==2)
write_output("H10.m","h10",&(UE->common_vars.common_vars_rx_data_per_thread[subframe&0x1].dl_ch_estimates[0][2][0]),((frame_parms->Ncp==0)?7:6)*(eNB->frame_parms.ofdm_symbol_size),1,1);
write_output("pdcch_rxF_ext0.m","pdcch_rxF_ext0",UE->pdcch_vars[0][eNb_id]->rxdataF_ext[0],3*12*UE->frame_parms.N_RB_DL,1,1);
write_output("pdcch_rxF_comp0.m","pdcch0_rxF_comp0",UE->pdcch_vars[0][eNb_id]->rxdataF_comp[0],4*12*UE->frame_parms.N_RB_DL,1,1);
write_output("pdcch_rxF_llr.m","pdcch_llr",UE->pdcch_vars[0][eNb_id]->llr,2400,1,4);
}
lte_sync_time_free();
return(n_errors_ul);
}
