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srsRAN_4G/srslte/examples/pdsch_ue.c

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/**
*
* \section COPYRIGHT
*
* Copyright 2013-2015 Software Radio Systems Limited
*
* \section LICENSE
*
* This file is part of the srsLTE library.
*
* srsLTE is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* srsLTE is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* A copy of the GNU Affero General Public License can be found in
* the LICENSE file in the top-level directory of this distribution
* and at http://www.gnu.org/licenses/.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <unistd.h>
#include <math.h>
#include <sys/time.h>
#include <unistd.h>
#include <assert.h>
#include <signal.h>
#include <pthread.h>
#include <semaphore.h>
#include "srslte/srslte.h"
#define ENABLE_AGC_DEFAULT
#ifndef DISABLE_RF
#include "srslte/rf/rf.h"
#include "srslte/rf/rf_utils.h"
cell_search_cfg_t cell_detect_config = {
SRSLTE_DEFAULT_MAX_FRAMES_PBCH,
SRSLTE_DEFAULT_MAX_FRAMES_PSS,
SRSLTE_DEFAULT_NOF_VALID_PSS_FRAMES,
0
};
#else
#warning Compiling pdsch_ue with no RF support
#endif
//#define STDOUT_COMPACT
#ifndef DISABLE_GRAPHICS
#include "srsgui/srsgui.h"
void init_plots();
pthread_t plot_thread;
sem_t plot_sem;
uint32_t plot_sf_idx=0;
bool plot_track = true;
#endif
#define PRINT_CHANGE_SCHEDULIGN
//#define CORRECT_SAMPLE_OFFSET
/**********************************************************************
* Program arguments processing
***********************************************************************/
typedef struct {
int nof_subframes;
bool disable_plots;
bool disable_plots_except_constellation;
bool disable_cfo;
uint32_t time_offset;
int force_N_id_2;
uint16_t rnti;
char *input_file_name;
int file_offset_time;
float file_offset_freq;
uint32_t file_nof_prb;
uint32_t file_nof_ports;
uint32_t file_cell_id;
char *rf_args;
uint32_t rf_nof_rx_ant;
double rf_freq;
float rf_gain;
int net_port;
char *net_address;
int net_port_signal;
char *net_address_signal;
}prog_args_t;
void args_default(prog_args_t *args) {
args->disable_plots = false;
args->disable_plots_except_constellation = false;
args->nof_subframes = -1;
args->rnti = SRSLTE_SIRNTI;
args->force_N_id_2 = -1; // Pick the best
args->input_file_name = NULL;
args->disable_cfo = false;
args->time_offset = 0;
args->file_nof_prb = 25;
args->file_nof_ports = 1;
args->file_cell_id = 0;
args->file_offset_time = 0;
args->file_offset_freq = 0;
args->rf_args = "";
args->rf_freq = -1.0;
args->rf_nof_rx_ant = 1;
#ifdef ENABLE_AGC_DEFAULT
args->rf_gain = -1.0;
#else
args->rf_gain = 50.0;
#endif
args->net_port = -1;
args->net_address = "127.0.0.1";
args->net_port_signal = -1;
args->net_address_signal = "127.0.0.1";
}
void usage(prog_args_t *args, char *prog) {
printf("Usage: %s [agpPoOcildDnruv] -f rx_frequency (in Hz) | -i input_file\n", prog);
#ifndef DISABLE_RF
printf("\t-a RF args [Default %s]\n", args->rf_args);
#ifdef ENABLE_AGC_DEFAULT
printf("\t-g RF fix RX gain [Default AGC]\n");
#else
printf("\t-g Set RX gain [Default %.1f dB]\n", args->rf_gain);
#endif
#else
printf("\t RF is disabled.\n");
#endif
printf("\t-i input_file [Default use RF board]\n");
printf("\t-o offset frequency correction (in Hz) for input file [Default %.1f Hz]\n", args->file_offset_freq);
printf("\t-O offset samples for input file [Default %d]\n", args->file_offset_time);
printf("\t-p nof_prb for input file [Default %d]\n", args->file_nof_prb);
printf("\t-P nof_ports for input file [Default %d]\n", args->file_nof_ports);
printf("\t-c cell_id for input file [Default %d]\n", args->file_cell_id);
printf("\t-r RNTI in Hex [Default 0x%x]\n",args->rnti);
printf("\t-l Force N_id_2 [Default best]\n");
printf("\t-C Disable CFO correction [Default %s]\n", args->disable_cfo?"Disabled":"Enabled");
printf("\t-t Add time offset [Default %d]\n", args->time_offset);
#ifndef DISABLE_GRAPHICS
printf("\t-d disable plots [Default enabled]\n");
printf("\t-D disable all but constellation plots [Default enabled]\n");
#else
printf("\t plots are disabled. Graphics library not available\n");
#endif
printf("\t-n nof_subframes [Default %d]\n", args->nof_subframes);
printf("\t-s remote UDP port to send input signal (-1 does nothing with it) [Default %d]\n", args->net_port_signal);
printf("\t-S remote UDP address to send input signal [Default %s]\n", args->net_address_signal);
printf("\t-u remote TCP port to send data (-1 does nothing with it) [Default %d]\n", args->net_port);
printf("\t-U remote TCP address to send data [Default %s]\n", args->net_address);
printf("\t-v [set srslte_verbose to debug, default none]\n");
}
void parse_args(prog_args_t *args, int argc, char **argv) {
int opt;
args_default(args);
while ((opt = getopt(argc, argv, "aAoglipPcOCtdDnvrfuUsS")) != -1) {
switch (opt) {
case 'i':
args->input_file_name = argv[optind];
break;
case 'p':
args->file_nof_prb = atoi(argv[optind]);
break;
case 'P':
args->file_nof_ports = atoi(argv[optind]);
break;
case 'o':
args->file_offset_freq = atof(argv[optind]);
break;
case 'O':
args->file_offset_time = atoi(argv[optind]);
break;
case 'c':
args->file_cell_id = atoi(argv[optind]);
break;
case 'a':
args->rf_args = argv[optind];
break;
case 'A':
args->rf_nof_rx_ant = atoi(argv[optind]);
break;
case 'g':
args->rf_gain = atof(argv[optind]);
break;
case 'C':
args->disable_cfo = true;
break;
case 't':
args->time_offset = atoi(argv[optind]);
break;
case 'f':
args->rf_freq = strtod(argv[optind], NULL);
break;
case 'n':
args->nof_subframes = atoi(argv[optind]);
break;
case 'r':
args->rnti = strtol(argv[optind], NULL, 16);
break;
case 'l':
args->force_N_id_2 = atoi(argv[optind]);
break;
case 'u':
args->net_port = atoi(argv[optind]);
break;
case 'U':
args->net_address = argv[optind];
break;
case 's':
args->net_port_signal = atoi(argv[optind]);
break;
case 'S':
args->net_address_signal = argv[optind];
break;
case 'd':
args->disable_plots = true;
break;
case 'D':
args->disable_plots_except_constellation = true;
break;
case 'v':
srslte_verbose++;
break;
default:
usage(args, argv[0]);
exit(-1);
}
}
if (args->rf_freq < 0 && args->input_file_name == NULL) {
usage(args, argv[0]);
exit(-1);
}
}
/**********************************************************************/
/* TODO: Do something with the output data */
uint8_t data[20000];
bool go_exit = false;
void sig_int_handler(int signo)
{
printf("SIGINT received. Exiting...\n");
if (signo == SIGINT) {
go_exit = true;
}
}
cf_t *sf_buffer[2] = {NULL, NULL};
#ifndef DISABLE_RF
int srslte_rf_recv_wrapper(void *h, cf_t *data[SRSLTE_MAX_RXANT], uint32_t nsamples, srslte_timestamp_t *t) {
DEBUG(" ---- Receive %d samples ---- \n", nsamples);
void *ptr[SRSLTE_MAX_RXANT];
for (int i=0;i<SRSLTE_MAX_RXANT;i++) {
ptr[i] = data[i];
}
return srslte_rf_recv_with_time_multi(h, ptr, nsamples, true, NULL, NULL);
}
double srslte_rf_set_rx_gain_th_wrapper_(void *h, double f) {
return srslte_rf_set_rx_gain_th((srslte_rf_t*) h, f);
}
#endif
extern float mean_exec_time;
enum receiver_state { DECODE_MIB, DECODE_PDSCH} state;
srslte_ue_dl_t ue_dl;
srslte_ue_sync_t ue_sync;
prog_args_t prog_args;
uint32_t sfn = 0; // system frame number
srslte_netsink_t net_sink, net_sink_signal;
int main(int argc, char **argv) {
int ret;
srslte_cell_t cell;
int64_t sf_cnt;
srslte_ue_mib_t ue_mib;
#ifndef DISABLE_RF
srslte_rf_t rf;
#endif
uint32_t nof_trials = 0;
int n;
uint8_t bch_payload[SRSLTE_BCH_PAYLOAD_LEN];
int sfn_offset;
float cfo = 0;
parse_args(&prog_args, argc, argv);
if (prog_args.net_port > 0) {
if (srslte_netsink_init(&net_sink, prog_args.net_address, prog_args.net_port, SRSLTE_NETSINK_TCP)) {
fprintf(stderr, "Error initiating UDP socket to %s:%d\n", prog_args.net_address, prog_args.net_port);
exit(-1);
}
srslte_netsink_set_nonblocking(&net_sink);
}
if (prog_args.net_port_signal > 0) {
if (srslte_netsink_init(&net_sink_signal, prog_args.net_address_signal,
prog_args.net_port_signal, SRSLTE_NETSINK_UDP)) {
fprintf(stderr, "Error initiating UDP socket to %s:%d\n", prog_args.net_address_signal, prog_args.net_port_signal);
exit(-1);
}
srslte_netsink_set_nonblocking(&net_sink_signal);
}
#ifndef DISABLE_RF
if (!prog_args.input_file_name) {
printf("Opening RF device with %d RX antennas...\n", prog_args.rf_nof_rx_ant);
if (srslte_rf_open_multi(&rf, prog_args.rf_args, prog_args.rf_nof_rx_ant)) {
fprintf(stderr, "Error opening rf\n");
exit(-1);
}
/* Set receiver gain */
if (prog_args.rf_gain > 0) {
srslte_rf_set_rx_gain(&rf, prog_args.rf_gain);
} else {
printf("Starting AGC thread...\n");
if (srslte_rf_start_gain_thread(&rf, false)) {
fprintf(stderr, "Error opening rf\n");
exit(-1);
}
srslte_rf_set_rx_gain(&rf, 50);
cell_detect_config.init_agc = 50;
}
sigset_t sigset;
sigemptyset(&sigset);
sigaddset(&sigset, SIGINT);
sigprocmask(SIG_UNBLOCK, &sigset, NULL);
signal(SIGINT, sig_int_handler);
srslte_rf_set_master_clock_rate(&rf, 30.72e6);
/* set receiver frequency */
printf("Tunning receiver to %.3f MHz\n", prog_args.rf_freq/1000000);
srslte_rf_set_rx_freq(&rf, prog_args.rf_freq);
srslte_rf_rx_wait_lo_locked(&rf);
uint32_t ntrial=0;
do {
ret = rf_search_and_decode_mib(&rf, prog_args.rf_nof_rx_ant, &cell_detect_config, prog_args.force_N_id_2, &cell, &cfo);
if (ret < 0) {
fprintf(stderr, "Error searching for cell\n");
exit(-1);
} else if (ret == 0 && !go_exit) {
printf("Cell not found after %d trials. Trying again (Press Ctrl+C to exit)\n", ntrial++);
}
} while (ret == 0 && !go_exit);
if (go_exit) {
exit(0);
}
srslte_rf_stop_rx_stream(&rf);
srslte_rf_flush_buffer(&rf);
/* set sampling frequency */
int srate = srslte_sampling_freq_hz(cell.nof_prb);
if (srate != -1) {
if (srate < 10e6) {
srslte_rf_set_master_clock_rate(&rf, 4*srate);
} else {
srslte_rf_set_master_clock_rate(&rf, srate);
}
printf("Setting sampling rate %.2f MHz\n", (float) srate/1000000);
float srate_rf = srslte_rf_set_rx_srate(&rf, (double) srate);
if (srate_rf != srate) {
fprintf(stderr, "Could not set sampling rate\n");
exit(-1);
}
} else {
fprintf(stderr, "Invalid number of PRB %d\n", cell.nof_prb);
exit(-1);
}
INFO("Stopping RF and flushing buffer...\r",0);
}
#endif
/* If reading from file, go straight to PDSCH decoding. Otherwise, decode MIB first */
if (prog_args.input_file_name) {
/* preset cell configuration */
cell.id = prog_args.file_cell_id;
cell.cp = SRSLTE_CP_NORM;
cell.phich_length = SRSLTE_PHICH_NORM;
cell.phich_resources = SRSLTE_PHICH_R_1;
cell.nof_ports = prog_args.file_nof_ports;
cell.nof_prb = prog_args.file_nof_prb;
if (srslte_ue_sync_init_file(&ue_sync, prog_args.file_nof_prb,
prog_args.input_file_name, prog_args.file_offset_time, prog_args.file_offset_freq)) {
fprintf(stderr, "Error initiating ue_sync\n");
exit(-1);
}
} else {
#ifndef DISABLE_RF
if (srslte_ue_sync_init(&ue_sync, cell, srslte_rf_recv_wrapper, prog_args.rf_nof_rx_ant, (void*) &rf)) {
fprintf(stderr, "Error initiating ue_sync\n");
exit(-1);
}
#endif
}
if (srslte_ue_mib_init(&ue_mib, cell)) {
fprintf(stderr, "Error initaiting UE MIB decoder\n");
exit(-1);
}
if (srslte_ue_dl_init(&ue_dl, cell, prog_args.rf_nof_rx_ant)) { // This is the User RNTI
fprintf(stderr, "Error initiating UE downlink processing module\n");
exit(-1);
}
for (int i=0;i<prog_args.rf_nof_rx_ant;i++) {
sf_buffer[i] = srslte_vec_malloc(3*sizeof(cf_t)*SRSLTE_SF_LEN_PRB(cell.nof_prb));
}
/* Configure downlink receiver for the SI-RNTI since will be the only one we'll use */
srslte_ue_dl_set_rnti(&ue_dl, prog_args.rnti);
/* Initialize subframe counter */
sf_cnt = 0;
#ifndef DISABLE_GRAPHICS
if (!prog_args.disable_plots) {
init_plots(cell);
sleep(1);
}
#endif
#ifndef DISABLE_RF
if (!prog_args.input_file_name) {
srslte_rf_start_rx_stream(&rf);
}
#endif
// Variables for measurements
uint32_t nframes=0;
float rsrp=0.0, rsrq=0.0, noise=0.0;
bool decode_pdsch = false;
#ifndef DISABLE_RF
if (prog_args.rf_gain < 0) {
srslte_ue_sync_start_agc(&ue_sync, srslte_rf_set_rx_gain_th_wrapper_, cell_detect_config.init_agc);
}
#endif
#ifdef PRINT_CHANGE_SCHEDULIGN
srslte_ra_dl_dci_t old_dl_dci;
bzero(&old_dl_dci, sizeof(srslte_ra_dl_dci_t));
#endif
ue_sync.correct_cfo = !prog_args.disable_cfo;
// Set initial CFO for ue_sync
srslte_ue_sync_set_cfo(&ue_sync, cfo);
srslte_pbch_decode_reset(&ue_mib.pbch);
INFO("\nEntering main loop...\n\n", 0);
/* Main loop */
while (!go_exit && (sf_cnt < prog_args.nof_subframes || prog_args.nof_subframes == -1)) {
ret = srslte_ue_sync_zerocopy(&ue_sync, sf_buffer);
if (ret < 0) {
fprintf(stderr, "Error calling srslte_ue_sync_work()\n");
}
#ifdef CORRECT_SAMPLE_OFFSET
float sample_offset = (float) srslte_ue_sync_get_last_sample_offset(&ue_sync)+srslte_ue_sync_get_sfo(&ue_sync)/1000;
srslte_ue_dl_set_sample_offset(&ue_dl, sample_offset);
#endif
/* srslte_ue_sync_get_buffer returns 1 if successfully read 1 aligned subframe */
if (ret == 1) {
switch (state) {
case DECODE_MIB:
if (srslte_ue_sync_get_sfidx(&ue_sync) == 0) {
n = srslte_ue_mib_decode(&ue_mib, sf_buffer[0], bch_payload, NULL, &sfn_offset);
if (n < 0) {
fprintf(stderr, "Error decoding UE MIB\n");
exit(-1);
} else if (n == SRSLTE_UE_MIB_FOUND) {
srslte_pbch_mib_unpack(bch_payload, &cell, &sfn);
srslte_cell_fprint(stdout, &cell, sfn);
printf("Decoded MIB. SFN: %d, offset: %d\n", sfn, sfn_offset);
sfn = (sfn + sfn_offset)%1024;
state = DECODE_PDSCH;
}
}
break;
case DECODE_PDSCH:
if (prog_args.rnti != SRSLTE_SIRNTI) {
decode_pdsch = true;
} else {
/* We are looking for SIB1 Blocks, search only in appropiate places */
if ((srslte_ue_sync_get_sfidx(&ue_sync) == 5 && (sfn%2)==0)) {
decode_pdsch = true;
} else {
decode_pdsch = false;
}
}
if (decode_pdsch) {
INFO("Attempting DL decode SFN=%d\n", sfn);
n = srslte_ue_dl_decode(&ue_dl,
sf_buffer,
data,
sfn*10+srslte_ue_sync_get_sfidx(&ue_sync));
if (n < 0) {
// fprintf(stderr, "Error decoding UE DL\n");fflush(stdout);
} else if (n > 0) {
/* Send data if socket active */
if (prog_args.net_port > 0) {
srslte_netsink_write(&net_sink, data, 1+(n-1)/8);
}
#ifdef PRINT_CHANGE_SCHEDULIGN
if (ue_dl.dl_dci.mcs_idx != old_dl_dci.mcs_idx ||
memcmp(&ue_dl.dl_dci.type0_alloc, &old_dl_dci.type0_alloc, sizeof(srslte_ra_type0_t)) ||
memcmp(&ue_dl.dl_dci.type1_alloc, &old_dl_dci.type1_alloc, sizeof(srslte_ra_type1_t)) ||
memcmp(&ue_dl.dl_dci.type2_alloc, &old_dl_dci.type2_alloc, sizeof(srslte_ra_type2_t)))
{
memcpy(&old_dl_dci, &ue_dl.dl_dci, sizeof(srslte_ra_dl_dci_t));
fflush(stdout);
printf("Format: %s\n", srslte_dci_format_string(ue_dl.dci_format));
srslte_ra_pdsch_fprint(stdout, &old_dl_dci, cell.nof_prb);
srslte_ra_dl_grant_fprint(stdout, &ue_dl.pdsch_cfg.grant);
}
#endif
}
nof_trials++;
rsrq = SRSLTE_VEC_EMA(srslte_chest_dl_get_rsrq(&ue_dl.chest), rsrq, 0.1);
rsrp = SRSLTE_VEC_EMA(srslte_chest_dl_get_rsrp(&ue_dl.chest), rsrp, 0.05);
noise = SRSLTE_VEC_EMA(srslte_chest_dl_get_noise_estimate(&ue_dl.chest), noise, 0.05);
nframes++;
if (isnan(rsrq)) {
rsrq = 0;
}
if (isnan(noise)) {
noise = 0;
}
if (isnan(rsrp)) {
rsrp = 0;
}
}
// Plot and Printf
if (srslte_ue_sync_get_sfidx(&ue_sync) == 5) {
float gain = prog_args.rf_gain;
if (gain < 0) {
gain = 10*log10(srslte_agc_get_gain(&ue_sync.agc));
}
printf("CFO: %+6.2f kHz, "
"SNR: %4.1f dB, "
"PDCCH-Miss: %5.2f%%, PDSCH-BLER: %5.2f%%\r",
srslte_ue_sync_get_cfo(&ue_sync)/1000,
10*log10(rsrp/noise),
100*(1-(float) ue_dl.nof_detected/nof_trials),
(float) 100*ue_dl.pkt_errors/ue_dl.pkts_total);
}
break;
}
if (srslte_ue_sync_get_sfidx(&ue_sync) == 9) {
sfn++;
if (sfn == 1024) {
sfn = 0;
printf("\n");
ue_dl.pkt_errors = 0;
ue_dl.pkts_total = 0;
ue_dl.nof_detected = 0;
nof_trials = 0;
}
}
#ifndef DISABLE_GRAPHICS
if (!prog_args.disable_plots) {
if ((sfn%4) == 0 && decode_pdsch) {
plot_sf_idx = srslte_ue_sync_get_sfidx(&ue_sync);
plot_track = true;
sem_post(&plot_sem);
}
}
#endif
} else if (ret == 0) {
printf("Finding PSS... Peak: %8.1f, FrameCnt: %d, State: %d\r",
srslte_sync_get_peak_value(&ue_sync.sfind),
ue_sync.frame_total_cnt, ue_sync.state);
#ifndef DISABLE_GRAPHICS
if (!prog_args.disable_plots) {
plot_sf_idx = srslte_ue_sync_get_sfidx(&ue_sync);
plot_track = false;
sem_post(&plot_sem);
}
#endif
}
sf_cnt++;
} // Main loop
#ifndef DISABLE_GRAPHICS
if (!prog_args.disable_plots) {
if (!pthread_kill(plot_thread, 0)) {
pthread_kill(plot_thread, SIGHUP);
pthread_join(plot_thread, NULL);
}
}
#endif
srslte_ue_dl_free(&ue_dl);
srslte_ue_sync_free(&ue_sync);
#ifndef DISABLE_RF
if (!prog_args.input_file_name) {
srslte_ue_mib_free(&ue_mib);
srslte_rf_close(&rf);
}
#endif
printf("\nBye\n");
exit(0);
}
/**********************************************************************
* Plotting Functions
***********************************************************************/
#ifndef DISABLE_GRAPHICS
plot_real_t p_sync, pce;
plot_scatter_t pscatequal, pscatequal_pdcch;
float tmp_plot[110*15*2048];
float tmp_plot2[110*15*2048];
float tmp_plot3[110*15*2048];
void *plot_thread_run(void *arg) {
int i;
uint32_t nof_re = SRSLTE_SF_LEN_RE(ue_dl.cell.nof_prb, ue_dl.cell.cp);
sdrgui_init();
plot_scatter_init(&pscatequal);
plot_scatter_setTitle(&pscatequal, "PDSCH - Equalized Symbols");
plot_scatter_setXAxisScale(&pscatequal, -4, 4);
plot_scatter_setYAxisScale(&pscatequal, -4, 4);
plot_scatter_addToWindowGrid(&pscatequal, (char*)"pdsch_ue", 0, 0);
if (!prog_args.disable_plots_except_constellation) {
plot_real_init(&pce);
plot_real_setTitle(&pce, "Channel Response - Magnitude");
plot_real_setLabels(&pce, "Index", "dB");
plot_real_setYAxisScale(&pce, -40, 40);
plot_real_init(&p_sync);
plot_real_setTitle(&p_sync, "PSS Cross-Corr abs value");
plot_real_setYAxisScale(&p_sync, 0, 1);
plot_scatter_init(&pscatequal_pdcch);
plot_scatter_setTitle(&pscatequal_pdcch, "PDCCH - Equalized Symbols");
plot_scatter_setXAxisScale(&pscatequal_pdcch, -4, 4);
plot_scatter_setYAxisScale(&pscatequal_pdcch, -4, 4);
plot_real_addToWindowGrid(&pce, (char*)"pdsch_ue", 0, 1);
plot_real_addToWindowGrid(&pscatequal_pdcch, (char*)"pdsch_ue", 1, 0);
plot_real_addToWindowGrid(&p_sync, (char*)"pdsch_ue", 1, 1);
}
while(1) {
sem_wait(&plot_sem);
uint32_t nof_symbols = ue_dl.pdsch_cfg.nbits.nof_re;
if (!prog_args.disable_plots_except_constellation) {
for (i = 0; i < nof_re; i++) {
tmp_plot[i] = 20 * log10f(cabsf(ue_dl.sf_symbols[0][i]));
if (isinf(tmp_plot[i])) {
tmp_plot[i] = -80;
}
}
int sz = srslte_symbol_sz(ue_dl.cell.nof_prb);
bzero(tmp_plot2, sizeof(float)*sz);
int g = (sz - 12*ue_dl.cell.nof_prb)/2;
for (i = 0; i < 12*ue_dl.cell.nof_prb; i++) {
tmp_plot2[g+i] = 20 * log10(cabs(ue_dl.ce[0][0][i]));
if (isinf(tmp_plot2[g+i])) {
tmp_plot2[g+i] = -80;
}
}
plot_real_setNewData(&pce, tmp_plot2, sz);
if (!prog_args.input_file_name) {
if (plot_track) {
srslte_pss_synch_t *pss_obj = srslte_sync_get_cur_pss_obj(&ue_sync.strack);
int max = srslte_vec_max_fi(pss_obj->conv_output_avg, pss_obj->frame_size+pss_obj->fft_size-1);
srslte_vec_sc_prod_fff(pss_obj->conv_output_avg,
1/pss_obj->conv_output_avg[max],
tmp_plot2,
pss_obj->frame_size+pss_obj->fft_size-1);
plot_real_setNewData(&p_sync, tmp_plot2, pss_obj->frame_size);
} else {
int max = srslte_vec_max_fi(ue_sync.sfind.pss.conv_output_avg, ue_sync.sfind.pss.frame_size+ue_sync.sfind.pss.fft_size-1);
srslte_vec_sc_prod_fff(ue_sync.sfind.pss.conv_output_avg,
1/ue_sync.sfind.pss.conv_output_avg[max],
tmp_plot2,
ue_sync.sfind.pss.frame_size+ue_sync.sfind.pss.fft_size-1);
plot_real_setNewData(&p_sync, tmp_plot2, ue_sync.sfind.pss.frame_size);
}
}
plot_scatter_setNewData(&pscatequal_pdcch, ue_dl.pdcch.d, 36*ue_dl.pdcch.nof_cce);
}
plot_scatter_setNewData(&pscatequal, ue_dl.pdsch.d, nof_symbols);
if (plot_sf_idx == 1) {
if (prog_args.net_port_signal > 0) {
srslte_netsink_write(&net_sink_signal, &sf_buffer[srslte_ue_sync_sf_len(&ue_sync)/7],
srslte_ue_sync_sf_len(&ue_sync));
}
}
}
return NULL;
}
void init_plots() {
if (sem_init(&plot_sem, 0, 0)) {
perror("sem_init");
exit(-1);
}
pthread_attr_t attr;
struct sched_param param;
param.sched_priority = 0;
pthread_attr_init(&attr);
pthread_attr_setschedpolicy(&attr, SCHED_OTHER);
pthread_attr_setschedparam(&attr, &param);
if (pthread_create(&plot_thread, NULL, plot_thread_run, NULL)) {
perror("pthread_create");
exit(-1);
}
}
#endif
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