/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.0 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#include <string.h>
#include <math.h>
#include <unistd.h>
#include "SIMULATION/TOOLS/defs.h"
#include "SIMULATION/RF/defs.h"
#include "PHY/types.h"
#include "PHY/defs.h"
#include "PHY/vars.h"
#ifdef EMOS
#include "SCHED/phy_procedures_emos.h"
#endif
#include "SCHED/defs.h"
#include "SCHED/vars.h"
#include "LAYER2/MAC/vars.h"
#include "intertask_interface_init.h"
#include "OCG_vars.h"
#include "UTIL/LOG/log_extern.h"
#include "unitary_defs.h"
int current_dlsch_cqi; //FIXME!
PHY_VARS_eNB *eNB;
PHY_VARS_UE *UE;
#define DLSCH_RB_ALLOC 0x1fbf // igore DC component,RB13
int main(int argc, char **argv)
{
char c;
int i,l,aa;
double sigma2, sigma2_dB=0,SNR,snr0=-2.0,snr1=0.0;
uint8_t snr1set=0;
//mod_sym_t **txdataF;
int **txdata;
double s_re0[30720],s_re1[30720],s_im0[30720],s_im1[30720],r_re0[30720],r_im0[30720],r_re1[30720],r_im1[30720];
double *s_re[2]={s_re0,s_re1};
double *s_im[2]={s_im0,s_im1};
double *r_re[2]={r_re0,r_re1};
double *r_im[2]={r_im0,r_im1};
double ricean_factor=0.0000005,iqim=0.0;
int trial, n_trials, ntrials=1, n_errors;
uint8_t transmission_mode = 1,n_tx=1,n_rx=1;
unsigned char eNB_id = 0;
uint16_t Nid_cell=0;
int n_frames=1;
channel_desc_t *UE2eNB;
uint32_t nsymb,tx_lev;
uint8_t extended_prefix_flag=0;
LTE_DL_FRAME_PARMS *frame_parms;
#ifdef EMOS
fifo_dump_emos emos_dump;
#endif
SCM_t channel_model=Rayleigh1_corr;
// double pucch_sinr;
uint8_t osf=1,N_RB_DL=25;
uint32_t pucch_tx=0,pucch1_missed=0,pucch1_false=0,sig;
PUCCH_FMT_t pucch_format = pucch_format1;
PUCCH_CONFIG_DEDICATED pucch_config_dedicated;
uint8_t subframe=0;
uint8_t pucch_payload,pucch_payload_rx;
double tx_gain=1.0;
int32_t stat;
double stat_no_sig,stat_sig;
uint8_t N0=40;
uint8_t pucch1_thres=10;
uint16_t n1_pucch = 0;
uint16_t n2_pucch = 0;
number_of_cards = 1;
while ((c = getopt (argc, argv, "har:pf:g:n:s:S:x:y:z:N:F:T:R:")) != -1) {
switch (c) {
case 'a':
printf("Running AWGN simulation\n");
channel_model = AWGN;
ntrials=1;
break;
case 'f':
if (atoi(optarg)==0)
pucch_format = pucch_format1;
else if (atoi(optarg)==1)
pucch_format = pucch_format1a;
else if (atoi(optarg)==2)
pucch_format = pucch_format1b;
else {
printf("Unsupported pucch_format %d\n",atoi(optarg));
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;
case 'H':
channel_model=Rayleigh8;
case 'I':
channel_model=Rayleigh1;
case 'J':
channel_model=Rayleigh1_corr;
case 'K':
channel_model=Rayleigh1_anticorr;
case 'L':
channel_model=Rice8;
case 'M':
channel_model=Rice1;
break;
default:
printf("Unsupported channel model!\n");
exit(-1);
}
break;
case 'n':
n_frames = atoi(optarg);
break;
case 's':
snr0 = atof(optarg);
printf("Setting SNR0 to %f\n",snr0);
break;
case 'S':
snr1 = atof(optarg);
snr1set=1;
printf("Setting SNR1 to %f\n",snr1);
break;
case 'p':
extended_prefix_flag=1;
break;
case 'r':
ricean_factor = pow(10,-.1*atof(optarg));
if (ricean_factor>1) {
printf("Ricean factor must be between 0 and 1\n");
exit(-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 'N':
N0 = atoi(optarg);
break;
case 'T':
pucch1_thres = atoi(optarg);
break;
case 'R':
N_RB_DL = atoi(optarg);
break;
case 'O':
osf = atoi(optarg);
break;
case 'F':
break;
default:
case 'h':
printf("%s -h(elp) -a(wgn on) -p(extended_prefix) -N cell_id -f output_filename -F input_filename -g channel_model -n n_frames -t Delayspread -r Ricean_FactordB -s snr0 -S snr1 -x transmission_mode -y TXant -z RXant -N CellId\n",
argv[0]);
printf("-h This message\n");
printf("-a Use AWGN channel and not multipath\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 SNR0 to SNR0 + 5 dB. If n_frames is 1 then just SNR is simulated\n");
printf("-S Ending SNR, runs from SNR0 to SNR1\n");
printf("-t Delay spread for multipath channel\n");
printf("-g [A,B,C,D,E,F,G] Use 3GPP SCM (A,B,C,D) or 36-101 (E-EPA,F-EVA,G-ETU) models (ignores delay spread and Ricean factor)\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("-i Relative strength of first intefering eNB (in dB) - cell_id mod 3 = 1\n");
printf("-j Relative strength of second intefering eNB (in dB) - cell_id mod 3 = 2\n");
printf("-N Noise variance in dB\n");
printf("-R N_RB_DL\n");
printf("-O oversampling factor (1,2,4,8,16)\n");
printf("-f PUCCH format (0=1,1=1a,2=1b), formats 2/2a/2b not supported\n");
printf("-F Input filename (.txt format) for RX conformance testing\n");
exit (-1);
break;
}
}
logInit();
itti_init(TASK_MAX, THREAD_MAX, MESSAGES_ID_MAX, tasks_info, messages_info, messages_definition_xml, NULL);
g_log->log_component[PHY].level = LOG_DEBUG;
g_log->log_component[PHY].flag = LOG_HIGH;
if (transmission_mode==2)
n_tx=2;
lte_param_init(n_tx,
n_tx,
n_rx,
transmission_mode,
extended_prefix_flag,
FDD,
Nid_cell,
3,
N_RB_DL,
0,
osf,
0);
if (snr1set==0) {
if (n_frames==1)
snr1 = snr0+.1;
else
snr1 = snr0+5.0;
}
printf("SNR0 %f, SNR1 %f\n",snr0,snr1);
frame_parms = &eNB->frame_parms;
txdata = eNB->common_vars.txdata[eNB_id];
nsymb = (frame_parms->Ncp == 0) ? 14 : 12;
printf("FFT Size %d, Extended Prefix %d, Samples per subframe %d, Symbols per subframe %d\n",NUMBER_OF_OFDM_CARRIERS,
frame_parms->Ncp,frame_parms->samples_per_tti,nsymb);
printf("[SIM] Using SCM/101\n");
UE2eNB = 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_UL),
N_RB2channel_bandwidth(eNB->frame_parms.N_RB_UL),
0.0,
0,
0);
if (UE2eNB==NULL) {
printf("Problem generating channel model. Exiting.\n");
exit(-1);
}
init_ncs_cell(&eNB->frame_parms,eNB->ncs_cell);
init_ncs_cell(&UE->frame_parms,UE->ncs_cell);
init_ul_hopping(&eNB->frame_parms);
init_ul_hopping(&UE->frame_parms);
eNB->frame_parms.pucch_config_common.deltaPUCCH_Shift = 2;
eNB->frame_parms.pucch_config_common.nRB_CQI = 4;
eNB->frame_parms.pucch_config_common.nCS_AN = 6;
UE->frame_parms.pucch_config_common.deltaPUCCH_Shift = 2;
UE->frame_parms.pucch_config_common.nRB_CQI = 4;
UE->frame_parms.pucch_config_common.nCS_AN = 6;
pucch_payload = 0;
generate_pucch1x(UE->common_vars.txdataF,
frame_parms,
UE->ncs_cell,
pucch_format,
&pucch_config_dedicated,
n1_pucch,
0, //shortened_format,
&pucch_payload,
AMP, //amp,
subframe); //subframe
write_output("txsigF0.m","txsF0", &UE->common_vars.txdataF[0][2*subframe*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES_NO_PREFIX],OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES_NO_PREFIX*nsymb,1,1);
tx_lev = 0;
for (aa=0; aa<eNB->frame_parms.nb_antennas_tx; aa++) {
if (frame_parms->Ncp == 1)
PHY_ofdm_mod(&UE->common_vars.txdataF[aa][2*subframe*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES_NO_PREFIX], // input,
&txdata[aa][eNB->frame_parms.samples_per_tti*subframe], // output
frame_parms->ofdm_symbol_size,
nsymb, // number of symbols
frame_parms->nb_prefix_samples, // number of prefix samples
CYCLIC_PREFIX);
else {
normal_prefix_mod(&UE->common_vars.txdataF[eNB_id][subframe*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES_NO_PREFIX],
&txdata[aa][eNB->frame_parms.samples_per_tti*subframe],
nsymb,
frame_parms);
//apply_7_5_kHz(UE,UE->common_vars.txdata[aa],subframe<<1);
//apply_7_5_kHz(UE,UE->common_vars.txdata[aa],1+(subframe<<1));
apply_7_5_kHz(UE,&txdata[aa][eNB->frame_parms.samples_per_tti*subframe],0);
apply_7_5_kHz(UE,&txdata[aa][eNB->frame_parms.samples_per_tti*subframe],1);
}
tx_lev += signal_energy(&txdata[aa][subframe*eNB->frame_parms.samples_per_tti],
OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES);
}
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);
// multipath channel
for (i=0; i<2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES; i++) {
for (aa=0; aa<eNB->frame_parms.nb_antennas_tx; aa++) {
s_re[aa][i] = ((double)(((short *)&txdata[aa][subframe*frame_parms->samples_per_tti]))[(i<<1)]);
s_im[aa][i] = ((double)(((short *)&txdata[aa][subframe*frame_parms->samples_per_tti]))[(i<<1)+1]);
}
}
for (SNR=snr0; SNR<snr1; SNR+=.2) {
printf("n_frames %d SNR %f\n",n_frames,SNR);
n_errors = 0;
pucch_tx = 0;
pucch1_missed=0;
pucch1_false=0;
stat_no_sig = 0;
stat_sig = 0;
for (trial=0; trial<n_frames; trial++) {
multipath_channel(UE2eNB,s_re,s_im,r_re,r_im,
eNB->frame_parms.samples_per_tti,0);
sigma2_dB = N0;//10*log10((double)tx_lev) - SNR;
tx_gain = sqrt(pow(10.0,.1*(N0+SNR))/(double)tx_lev);
if (n_frames==1)
printf("sigma2_dB %f (SNR %f dB) tx_lev_dB %f,tx_gain %f (%f dB)\n",sigma2_dB,SNR,10*log10((double)tx_lev),tx_gain,20*log10(tx_gain));
//AWGN
sigma2 = pow(10,sigma2_dB/10);
// printf("Sigma2 %f (sigma2_dB %f)\n",sigma2,sigma2_dB);
if (n_frames==1) {
printf("rx_level data symbol %f, tx_lev %f\n",
10*log10(signal_energy_fp(r_re,r_im,1,OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES,0)),
10*log10(tx_lev));
}
if (pucch_format != pucch_format1) {
pucch_tx++;
sig=1;
} else {
if (trial<(n_frames>>1)) {
//printf("no sig =>");
sig= 0;
} else {
sig=1;
//printf("sig =>");
pucch_tx++;
}
}
// sig = 1;
for (n_trials=0; n_trials<ntrials; n_trials++) {
//printf("n_trial %d\n",n_trials);
// fill measurement symbol (19) with noise
for (i=0; i<OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES; i++) {
for (aa=0; aa<eNB->frame_parms.nb_antennas_rx; aa++) {
((short*) &eNB->common_vars.rxdata[0][aa][(frame_parms->samples_per_tti<<1) -frame_parms->ofdm_symbol_size])[2*i] = (short) ((sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
((short*) &eNB->common_vars.rxdata[0][aa][(frame_parms->samples_per_tti<<1) -frame_parms->ofdm_symbol_size])[2*i+1] = (short) ((sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
}
}
for (i=0; i<2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES; i++) {
for (aa=0; aa<eNB->frame_parms.nb_antennas_rx; aa++) {
if (n_trials==0) {
// r_re[aa][i] += (pow(10.0,.05*interf1)*r_re1[aa][i] + pow(10.0,.05*interf2)*r_re2[aa][i]);
// r_im[aa][i] += (pow(10.0,.05*interf1)*r_im1[aa][i] + pow(10.0,.05*interf2)*r_im2[aa][i]);
}
if (sig==1) {
((short*) &eNB->common_vars.rxdata[0][aa][subframe*frame_parms->samples_per_tti])[2*i] = (short) (((tx_gain*r_re[aa][i]) +sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
((short*) &eNB->common_vars.rxdata[0][aa][subframe*frame_parms->samples_per_tti])[2*i+1] = (short) (((tx_gain*r_im[aa][i]) + (iqim*r_re[aa][i]*tx_gain) + sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
} else {
((short*) &eNB->common_vars.rxdata[0][aa][subframe*frame_parms->samples_per_tti])[2*i] = (short) ((sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
((short*) &eNB->common_vars.rxdata[0][aa][subframe*frame_parms->samples_per_tti])[2*i+1] = (short) ((sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
}
}
}
remove_7_5_kHz(eNB,subframe<<1);
remove_7_5_kHz(eNB,1+(subframe<<1));
for (l=0; l<eNB->frame_parms.symbols_per_tti/2; l++) {
slot_fep_ul(&eNB->frame_parms,
&eNB->common_vars,
l,
subframe*2,// slot
0,
0
);
slot_fep_ul(&eNB->frame_parms,
&eNB->common_vars,
l,
1+(subframe*2),//slot
0,
0
);
}
// if (sig == 1)
// printf("*");
lte_eNB_I0_measurements(eNB,
subframe,
0,
1);
eNB->measurements[0].n0_power_tot_dB = N0;//(int8_t)(sigma2_dB-10*log10(eNB->frame_parms.ofdm_symbol_size/(12*NB_RB)));
stat = rx_pucch(eNB,
pucch_format,
0,
n1_pucch,
n2_pucch,
0, //shortened_format,
&pucch_payload_rx, //payload,
0 /* frame not defined, let's pass 0 */,
subframe,
pucch1_thres);
if (trial < (n_frames>>1)) {
stat_no_sig += (2*(double)stat/n_frames);
// printf("stat (no_sig) %f\n",stat_no_sig);
} else {
stat_sig += (2*(double)stat/n_frames);
// printf("stat (sig) %f\n",stat_sig);
}
if (pucch_format==pucch_format1) {
pucch1_missed = ((pucch_payload_rx == 0) && (sig==1)) ? (pucch1_missed+1) : pucch1_missed;
pucch1_false = ((pucch_payload_rx == 1) && (sig==0)) ? (pucch1_false+1) : pucch1_false;
/*
if ((pucch_payload_rx == 0) && (sig==1)) {
printf("EXIT\n");
exit(-1);
}*/
} else {
pucch1_false = (pucch_payload_rx != pucch_payload) ? (pucch1_false+1) : pucch1_false;
}
// printf("sig %d\n",sig);
} // NSR
}
if (pucch_format==pucch_format1)
printf("pucch_trials %d : pucch1_false %d,pucch1_missed %d, N0 %d dB, stat_no_sig %f dB, stat_sig %f dB\n",pucch_tx,pucch1_false,pucch1_missed,eNB->measurements[0].n0_power_tot_dB,
10*log10(stat_no_sig),10*log10(stat_sig));
else if (pucch_format==pucch_format1a)
printf("pucch_trials %d : pucch1a_errors %d\n",pucch_tx,pucch1_false);
else if (pucch_format==pucch_format1b)
printf("pucch_trials %d : pucch1b_errors %d\n",pucch_tx,pucch1_false);
}
if (n_frames==1) {
//write_output("txsig0.m","txs0", &txdata[0][subframe*frame_parms->samples_per_tti],frame_parms->samples_per_tti,1,1);
write_output("txsig0pucch.m", "txs0", &txdata[0][0], FRAME_LENGTH_COMPLEX_SAMPLES,1,1);
write_output("rxsig0.m","rxs0", &eNB->common_vars.rxdata[0][0][subframe*frame_parms->samples_per_tti],frame_parms->samples_per_tti,1,1);
write_output("rxsigF0.m","rxsF0", &eNB->common_vars.rxdataF[0][0][0],512*nsymb*2,2,1);
}
lte_sync_time_free();
return(n_errors);
}
/*
for (i=1;i<4;i++)
memcpy((void *)&PHY_vars->tx_vars[0].TX_DMA_BUFFER[i*12*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES_NO_PREFIX*2],
(void *)&PHY_vars->tx_vars[0].TX_DMA_BUFFER[0],
12*OFDM_SYMBOL_SIZE_SAMPLES_NO_PREFIX*2);
*/