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/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2014 The libLTE Developers. See the
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* COPYRIGHT file at the top-level directory of this distribution.
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*
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* \section LICENSE
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*
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* This file is part of the libLTE library.
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*
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* libLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* libLTE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* A copy of the GNU Lesser General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <strings.h>
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#include <unistd.h>
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#include <math.h>
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#include <sys/time.h>
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#include <unistd.h>
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#include <assert.h>
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#include <signal.h>
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#include <pthread.h>
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#include <semaphore.h>
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#include "liblte/rrc/rrc.h"
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#include "liblte/phy/phy.h"
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#ifndef DISABLE_UHD
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#include "liblte/cuhd/cuhd.h"
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#include "cuhd_utils.h"
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cell_search_cfg_t cell_detect_config = {
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5000,
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100, // nof_frames_total
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16.0 // threshold
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};
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#endif
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//#define STDOUT_COMPACT
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#ifndef DISABLE_GRAPHICS
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#include "liblte/graphics/plot.h"
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void init_plots();
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pthread_t plot_thread;
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sem_t plot_sem;
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uint32_t plot_sf_idx;
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#endif
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#define B210_DEFAULT_GAIN 40.0
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#define B210_DEFAULT_GAIN_CORREC 110.0 // Gain of the Rx chain when the gain is set to 40
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float gain_offset = B210_DEFAULT_GAIN_CORREC;
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/**********************************************************************
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* Program arguments processing
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***********************************************************************/
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typedef struct {
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int nof_subframes;
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bool disable_plots;
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int force_N_id_2;
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uint16_t rnti;
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char *input_file_name;
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uint32_t file_nof_prb;
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char *uhd_args;
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float uhd_freq;
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float uhd_gain;
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int net_port;
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char *net_address;
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int net_port_signal;
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char *net_address_signal;
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}prog_args_t;
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void args_default(prog_args_t *args) {
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args->nof_subframes = -1;
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args->rnti = SIRNTI;
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args->force_N_id_2 = -1; // Pick the best
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args->input_file_name = NULL;
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args->file_nof_prb = 6;
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args->uhd_args = "";
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args->uhd_freq = -1.0;
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args->uhd_gain = 60.0;
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args->net_port = -1;
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args->net_address = "127.0.0.1";
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args->net_port_signal = -1;
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args->net_address_signal = "127.0.0.1";
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}
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void usage(prog_args_t *args, char *prog) {
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printf("Usage: %s [agildnruv] -f rx_frequency (in Hz) | -i input_file\n", prog);
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#ifndef DISABLE_GRAPHICS
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printf("\t-a UHD args [Default %s]\n", args->uhd_args);
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printf("\t-g UHD RX gain [Default %.2f dB]\n", args->uhd_gain);
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#else
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printf("\t UHD is disabled. CUHD library not available\n");
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#endif
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printf("\t-i input_file [Default USRP]\n");
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printf("\t-p nof_prb for input file [Default %d]\n", args->file_nof_prb);
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printf("\t-r RNTI [Default 0x%x]\n",args->rnti);
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printf("\t-l Force N_id_2 [Default best]\n");
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#ifndef DISABLE_GRAPHICS
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printf("\t-d disable plots [Default enabled]\n");
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#else
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printf("\t plots are disabled. Graphics library not available\n");
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#endif
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printf("\t-n nof_subframes [Default %d]\n", args->nof_subframes);
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printf("\t-s remote UDP port to send input signal (-1 does nothing with it) [Default %d]\n", args->net_port_signal);
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printf("\t-S remote UDP address to send input signal [Default %s]\n", args->net_address_signal);
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printf("\t-u remote TCP port to send data (-1 does nothing with it) [Default %d]\n", args->net_port);
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printf("\t-U remote TCP address to send data [Default %s]\n", args->net_address);
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printf("\t-v [set verbose to debug, default none]\n");
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}
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void parse_args(prog_args_t *args, int argc, char **argv) {
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int opt;
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args_default(args);
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while ((opt = getopt(argc, argv, "aglipdnvrfuUsS")) != -1) {
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switch (opt) {
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case 'i':
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args->input_file_name = argv[optind];
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break;
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case 'p':
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args->file_nof_prb = atoi(argv[optind]);
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break;
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case 'a':
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args->uhd_args = argv[optind];
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break;
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case 'g':
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args->uhd_gain = atof(argv[optind]);
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break;
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case 'f':
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args->uhd_freq = atof(argv[optind]);
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break;
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case 'n':
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args->nof_subframes = atoi(argv[optind]);
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break;
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case 'r':
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args->rnti = atoi(argv[optind]);
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break;
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case 'l':
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args->force_N_id_2 = atoi(argv[optind]);
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break;
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case 'u':
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args->net_port = atoi(argv[optind]);
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break;
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case 'U':
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args->net_address = argv[optind];
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break;
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case 's':
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args->net_port_signal = atoi(argv[optind]);
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break;
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case 'S':
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args->net_address_signal = argv[optind];
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break;
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case 'd':
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args->disable_plots = true;
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break;
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case 'v':
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verbose++;
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break;
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default:
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usage(args, argv[0]);
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exit(-1);
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}
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}
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if (args->uhd_freq < 0 && args->input_file_name == NULL) {
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usage(args, argv[0]);
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exit(-1);
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}
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}
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/**********************************************************************/
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/* TODO: Do something with the output data */
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uint8_t data[20000], data_packed[20000];
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bool go_exit = false;
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void sig_int_handler(int signo)
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{
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if (signo == SIGINT) {
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go_exit = true;
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}
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}
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#ifndef DISABLE_UHD
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int cuhd_recv_wrapper(void *h, void *data, uint32_t nsamples) {
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DEBUG(" ---- Receive %d samples ---- \n", nsamples);
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return cuhd_recv(h, data, nsamples, 1);
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}
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#endif
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extern float mean_exec_time;
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enum receiver_state { DECODE_MIB, DECODE_PDSCH} state;
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ue_dl_t ue_dl;
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ue_sync_t ue_sync;
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prog_args_t prog_args;
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uint32_t sfn = 0; // system frame number
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cf_t *sf_buffer;
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netsink_t net_sink, net_sink_signal;
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int main(int argc, char **argv) {
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int ret;
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lte_cell_t cell;
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int64_t sf_cnt;
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ue_mib_t ue_mib;
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#ifndef DISABLE_UHD
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void *uhd;
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#endif
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uint32_t nof_trials = 0;
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int n;
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uint8_t bch_payload[BCH_PAYLOAD_LEN], bch_payload_unpacked[BCH_PAYLOAD_LEN];
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uint32_t sfn_offset;
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parse_args(&prog_args, argc, argv);
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if (prog_args.net_port > 0) {
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if (netsink_init(&net_sink, prog_args.net_address, prog_args.net_port, NETSINK_TCP)) {
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fprintf(stderr, "Error initiating UDP socket to %s:%d\n", prog_args.net_address, prog_args.net_port);
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exit(-1);
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}
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netsink_set_nonblocking(&net_sink);
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}
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if (prog_args.net_port_signal > 0) {
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if (netsink_init(&net_sink_signal, prog_args.net_address_signal, prog_args.net_port_signal, NETSINK_UDP)) {
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fprintf(stderr, "Error initiating UDP socket to %s:%d\n", prog_args.net_address_signal, prog_args.net_port_signal);
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exit(-1);
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}
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netsink_set_nonblocking(&net_sink_signal);
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}
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#ifndef DISABLE_UHD
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if (!prog_args.input_file_name) {
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printf("Opening UHD device...\n");
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if (cuhd_open(prog_args.uhd_args, &uhd)) {
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fprintf(stderr, "Error opening uhd\n");
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exit(-1);
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}
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/* Set receiver gain */
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cuhd_set_rx_gain(uhd, prog_args.uhd_gain);
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/* set receiver frequency */
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cuhd_set_rx_freq(uhd, (double) prog_args.uhd_freq);
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cuhd_rx_wait_lo_locked(uhd);
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printf("Tunning receiver to %.3f MHz\n", (double ) prog_args.uhd_freq/1000000);
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ret = cuhd_search_and_decode_mib(uhd, &cell_detect_config, prog_args.force_N_id_2, &cell);
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if (ret < 0) {
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fprintf(stderr, "Error searching for cell\n");
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exit(-1);
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} else if (ret == 0) {
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printf("Cell not found\n");
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exit(0);
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}
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/* set sampling frequency */
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int srate = lte_sampling_freq_hz(cell.nof_prb);
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if (srate != -1) {
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cuhd_set_rx_srate(uhd, (double) srate);
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} else {
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fprintf(stderr, "Invalid number of PRB %d\n", cell.nof_prb);
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return LIBLTE_ERROR;
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}
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INFO("Stopping UHD and flushing buffer...\r",0);
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cuhd_stop_rx_stream(uhd);
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cuhd_flush_buffer(uhd);
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if (ue_mib_init(&ue_mib, cell)) {
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fprintf(stderr, "Error initaiting UE MIB decoder\n");
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exit(-1);
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}
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}
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#endif
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/* If reading from file, go straight to PDSCH decoding. Otherwise, decode MIB first */
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if (prog_args.input_file_name) {
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state = DECODE_PDSCH;
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/* preset cell configuration */
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cell.id = 1;
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cell.cp = CPNORM;
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cell.phich_length = PHICH_NORM;
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cell.phich_resources = R_1;
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cell.nof_ports = 1;
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cell.nof_prb = prog_args.file_nof_prb;
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if (ue_sync_init_file(&ue_sync, prog_args.file_nof_prb, prog_args.input_file_name)) {
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fprintf(stderr, "Error initiating ue_sync\n");
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exit(-1);
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}
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} else {
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#ifndef DISABLE_UHD
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state = DECODE_MIB;
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if (ue_sync_init(&ue_sync, cell, cuhd_recv_wrapper, uhd)) {
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fprintf(stderr, "Error initiating ue_sync\n");
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exit(-1);
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}
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#endif
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}
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if (ue_dl_init(&ue_dl, cell, prog_args.rnti==SIRNTI?1:prog_args.rnti)) { // This is the User RNTI
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fprintf(stderr, "Error initiating UE downlink processing module\n");
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exit(-1);
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}
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/* Configure downlink receiver for the SI-RNTI since will be the only one we'll use */
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ue_dl_set_rnti(&ue_dl, prog_args.rnti);
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/* Initialize subframe counter */
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sf_cnt = 0;
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// Register Ctrl+C handler
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signal(SIGINT, sig_int_handler);
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#ifndef DISABLE_GRAPHICS
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if (!prog_args.disable_plots) {
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init_plots(cell);
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}
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#endif
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#ifndef DISABLE_UHD
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if (!prog_args.input_file_name) {
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cuhd_start_rx_stream(uhd);
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}
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#endif
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// Variables for measurements
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uint32_t nframes=0;
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float rsrp=0.0, rsrq=0.0, snr=0.0;
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bool decode_pdsch;
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int pdcch_tx=0;
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/* Main loop */
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while (!go_exit && (sf_cnt < prog_args.nof_subframes || prog_args.nof_subframes == -1)) {
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ret = ue_sync_get_buffer(&ue_sync, &sf_buffer);
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if (ret < 0) {
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fprintf(stderr, "Error calling ue_sync_work()\n");
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}
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/* ue_sync_get_buffer returns 1 if successfully read 1 aligned subframe */
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if (ret == 1) {
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|
|
switch (state) {
|
|
|
|
case DECODE_MIB:
|
|
|
|
if (ue_sync_get_sfidx(&ue_sync) == 0) {
|
|
|
|
pbch_decode_reset(&ue_mib.pbch);
|
|
|
|
n = ue_mib_decode(&ue_mib, sf_buffer, bch_payload_unpacked, NULL, &sfn_offset);
|
|
|
|
if (n < 0) {
|
|
|
|
fprintf(stderr, "Error decoding UE MIB\n");
|
|
|
|
exit(-1);
|
|
|
|
} else if (n == MIB_FOUND) {
|
|
|
|
bit_unpack_vector(bch_payload_unpacked, bch_payload, BCH_PAYLOAD_LEN);
|
|
|
|
bcch_bch_unpack(bch_payload, BCH_PAYLOAD_LEN, &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 != SIRNTI) {
|
|
|
|
decode_pdsch = true;
|
|
|
|
} else {
|
|
|
|
/* We are looking for SIB1 Blocks, search only in appropiate places */
|
|
|
|
if ((ue_sync_get_sfidx(&ue_sync) == 5 && (sfn%2)==0)) {
|
|
|
|
decode_pdsch = true;
|
|
|
|
} else {
|
|
|
|
decode_pdsch = false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (decode_pdsch) {
|
|
|
|
if (prog_args.rnti != SIRNTI) {
|
|
|
|
n = ue_dl_decode(&ue_dl, sf_buffer, data_packed, ue_sync_get_sfidx(&ue_sync));
|
|
|
|
} else {
|
|
|
|
n = ue_dl_decode_sib(&ue_dl, sf_buffer, data_packed, ue_sync_get_sfidx(&ue_sync),
|
|
|
|
((int) ceilf((float)3*(((sfn)/2)%4)/2))%4);
|
|
|
|
}
|
|
|
|
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) {
|
|
|
|
bit_unpack_vector(data_packed, data, n);
|
|
|
|
netsink_write(&net_sink, data, 1+(n-1)/8);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
nof_trials++;
|
|
|
|
|
|
|
|
rsrq = VEC_EMA(chest_dl_get_rsrq(&ue_dl.chest), rsrq, 0.05);
|
|
|
|
rsrp = VEC_EMA(chest_dl_get_rsrp(&ue_dl.chest), rsrp, 0.05);
|
|
|
|
snr = VEC_EMA(chest_dl_get_snr(&ue_dl.chest), snr, 0.01);
|
|
|
|
nframes++;
|
|
|
|
if (isnan(rsrq)) {
|
|
|
|
rsrq = 0;
|
|
|
|
}
|
|
|
|
if (isnan(snr)) {
|
|
|
|
snr = 0;
|
|
|
|
}
|
|
|
|
if (isnan(rsrp)) {
|
|
|
|
rsrp = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Adjust channel estimator based on SNR */
|
|
|
|
if (10*log10(snr) < 5.0) {
|
|
|
|
float f_low_snr[5]={0.05, 0.15, 0.6, 0.15, 0.05};
|
|
|
|
chest_dl_set_filter_freq(&ue_dl.chest, f_low_snr, 5);
|
|
|
|
} else if (10*log10(snr) < 10.0) {
|
|
|
|
float f_mid_snr[3]={0.1, 0.8, 0.1};
|
|
|
|
chest_dl_set_filter_freq(&ue_dl.chest, f_mid_snr, 3);
|
|
|
|
} else {
|
|
|
|
float f_high_snr[3]={0.05, 0.9, 0.05};
|
|
|
|
chest_dl_set_filter_freq(&ue_dl.chest, f_high_snr, 3);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
if (ue_sync_get_sfidx(&ue_sync) != 5 && ue_sync_get_sfidx(&ue_sync) != 0) {
|
|
|
|
pdcch_tx++;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// Plot and Printf
|
|
|
|
if (ue_sync_get_sfidx(&ue_sync) == 5) {
|
|
|
|
#ifdef STDOUT_COMPACT
|
|
|
|
printf("SFN: %4d, PDCCH-Miss: %5.2f%% (%d missed), PDSCH-BLER: %5.2f%% (%d errors)\r",
|
|
|
|
sfn, 100*(1-(float) ue_dl.nof_pdcch_detected/nof_trials),pdcch_tx-ue_dl.nof_pdcch_detected,
|
|
|
|
(float) 100*ue_dl.pkt_errors/ue_dl.pkts_total,ue_dl.pkt_errors);
|
|
|
|
#else
|
|
|
|
printf("CFO: %+6.2f KHz, SFO: %+6.2f Khz, "
|
|
|
|
"RSRP: %+5.1f dBm, RSRQ: %5.1f dB, SNR: %4.1f dB, "
|
|
|
|
"PDCCH-Miss: %5.2f%% (%d), PDSCH-BLER: %5.2f%% (%d)\r",
|
|
|
|
ue_sync_get_cfo(&ue_sync)/1000, ue_sync_get_sfo(&ue_sync)/1000,
|
|
|
|
10*log10(rsrp*1000)-gain_offset,
|
|
|
|
10*log10(rsrq), 10*log10(snr),
|
|
|
|
100*(1-(float) ue_dl.nof_pdcch_detected/nof_trials), pdcch_tx-ue_dl.nof_pdcch_detected,
|
|
|
|
(float) 100*ue_dl.pkt_errors/ue_dl.pkts_total, ue_dl.pkt_errors);
|
|
|
|
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (ue_sync_get_sfidx(&ue_sync) == 9) {
|
|
|
|
sfn++;
|
|
|
|
if (sfn == 1024) {
|
|
|
|
sfn = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifndef DISABLE_GRAPHICS
|
|
|
|
if (!prog_args.disable_plots) {
|
|
|
|
plot_sf_idx = ue_sync_get_sfidx(&ue_sync);
|
|
|
|
sem_post(&plot_sem);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
} else if (ret == 0) {
|
|
|
|
printf("Finding PSS... Peak: %8.1f, FrameCnt: %d, State: %d\r",
|
|
|
|
sync_get_peak_value(&ue_sync.sfind),
|
|
|
|
ue_sync.frame_total_cnt, ue_sync.state);
|
|
|
|
}
|
|
|
|
|
|
|
|
sf_cnt++;
|
|
|
|
} // Main loop
|
|
|
|
|
|
|
|
ue_dl_free(&ue_dl);
|
|
|
|
ue_sync_free(&ue_sync);
|
|
|
|
|
|
|
|
#ifndef DISABLE_UHD
|
|
|
|
if (!prog_args.input_file_name) {
|
|
|
|
ue_mib_free(&ue_mib);
|
|
|
|
cuhd_close(uhd);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
printf("\nBye\n");
|
|
|
|
exit(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**********************************************************************
|
|
|
|
* Plotting Functions
|
|
|
|
***********************************************************************/
|
|
|
|
#ifndef DISABLE_GRAPHICS
|
|
|
|
|
|
|
|
|
|
|
|
//plot_waterfall_t poutfft;
|
|
|
|
plot_real_t p_sync, pce;
|
|
|
|
plot_scatter_t pscatequal, pscatequal_pdcch;
|
|
|
|
|
|
|
|
float tmp_plot[SLOT_LEN_RE(MAX_PRB, CPNORM)];
|
|
|
|
float tmp_plot2[SLOT_LEN_RE(MAX_PRB, CPNORM)];
|
|
|
|
float tmp_plot3[SLOT_LEN_RE(MAX_PRB, CPNORM)];
|
|
|
|
|
|
|
|
void *plot_thread_run(void *arg) {
|
|
|
|
int i;
|
|
|
|
uint32_t nof_re = SF_LEN_RE(ue_dl.cell.nof_prb, ue_dl.cell.cp);
|
|
|
|
|
|
|
|
while(1) {
|
|
|
|
sem_wait(&plot_sem);
|
|
|
|
|
|
|
|
uint32_t nof_symbols = ue_dl.harq_process[0].prb_alloc.re_sf[plot_sf_idx];
|
|
|
|
for (i = 0; i < nof_re; i++) {
|
|
|
|
tmp_plot[i] = 20 * log10f(cabsf(ue_dl.sf_symbols[i]));
|
|
|
|
if (isinf(tmp_plot[i])) {
|
|
|
|
tmp_plot[i] = -80;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
for (i = 0; i < REFSIGNAL_NUM_SF(ue_dl.cell.nof_prb,0); i++) {
|
|
|
|
tmp_plot2[i] = 20 * log10f(cabsf(ue_dl.chest.pilot_estimates_average[0][i]));
|
|
|
|
if (isinf(tmp_plot2[i])) {
|
|
|
|
tmp_plot2[i] = -80;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
//for (i=0;i<CP_NSYMB(ue_dl.cell.cp);i++) {
|
|
|
|
// plot_waterfall_appendNewData(&poutfft, &tmp_plot[i*RE_X_RB*ue_dl.cell.nof_prb], RE_X_RB*ue_dl.cell.nof_prb);
|
|
|
|
//}
|
|
|
|
plot_real_setNewData(&pce, tmp_plot2, REFSIGNAL_NUM_SF(ue_dl.cell.nof_prb,0));
|
|
|
|
if (!prog_args.input_file_name) {
|
|
|
|
int max = vec_max_fi(ue_sync.strack.pss.conv_output_avg, ue_sync.strack.pss.frame_size+ue_sync.strack.pss.fft_size-1);
|
|
|
|
vec_sc_prod_fff(ue_sync.strack.pss.conv_output_avg,
|
|
|
|
1/ue_sync.strack.pss.conv_output_avg[max],
|
|
|
|
tmp_plot2,
|
|
|
|
ue_sync.strack.pss.frame_size+ue_sync.strack.pss.fft_size-1);
|
|
|
|
plot_real_setNewData(&p_sync, tmp_plot2, ue_sync.strack.pss.frame_size);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
plot_scatter_setNewData(&pscatequal, ue_dl.pdsch.pdsch_d, nof_symbols);
|
|
|
|
plot_scatter_setNewData(&pscatequal_pdcch, ue_dl.pdcch.pdcch_d, 36*ue_dl.pdcch.nof_cce);
|
|
|
|
|
|
|
|
if (plot_sf_idx == 1) {
|
|
|
|
if (prog_args.net_port_signal > 0) {
|
|
|
|
netsink_write(&net_sink_signal, &sf_buffer[ue_sync_sf_len(&ue_sync)/7],
|
|
|
|
ue_sync_sf_len(&ue_sync));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
void init_plots() {
|
|
|
|
|
|
|
|
plot_init();
|
|
|
|
|
|
|
|
//plot_waterfall_init(&poutfft, RE_X_RB * ue_dl.cell.nof_prb, 1000);
|
|
|
|
//plot_waterfall_setTitle(&poutfft, "Output FFT - Magnitude");
|
|
|
|
//plot_waterfall_setPlotYAxisScale(&poutfft, -40, 40);
|
|
|
|
|
|
|
|
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);
|
|
|
|
plot_scatter_setTitle(&pscatequal, "PDSCH - Equalized Symbols");
|
|
|
|
plot_scatter_setXAxisScale(&pscatequal, -4, 4);
|
|
|
|
plot_scatter_setYAxisScale(&pscatequal, -4, 4);
|
|
|
|
|
|
|
|
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);
|
|
|
|
|
|
|
|
if (sem_init(&plot_sem, 0, 0)) {
|
|
|
|
perror("sem_init");
|
|
|
|
exit(-1);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (pthread_create(&plot_thread, NULL, plot_thread_run, NULL)) {
|
|
|
|
perror("pthread_create");
|
|
|
|
exit(-1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif
|