mirror of https://github.com/pvnis/srsRAN_4G.git
suttonpd
11 years ago
commit
c4f149f6e3
@ -1,283 +0,0 @@
|
||||
/**
|
||||
*
|
||||
* \section COPYRIGHT
|
||||
*
|
||||
* Copyright 2013-2014 The libLTE Developers. See the
|
||||
* COPYRIGHT file at the top-level directory of this distribution.
|
||||
*
|
||||
* \section LICENSE
|
||||
*
|
||||
* This file is part of the libLTE library.
|
||||
*
|
||||
* libLTE is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU Lesser General Public License as
|
||||
* published by the Free Software Foundation, either version 3 of
|
||||
* the License, or (at your option) any later version.
|
||||
*
|
||||
* libLTE 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 Lesser General Public License for more details.
|
||||
*
|
||||
* A copy of the GNU Lesser 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 "lte.h"
|
||||
|
||||
#ifndef DISABLE_UHD
|
||||
#include "cuhd.h"
|
||||
void *uhd;
|
||||
#endif
|
||||
|
||||
char *output_file_name = NULL;
|
||||
int nof_frames=-1;
|
||||
int cell_id = 1;
|
||||
int nof_prb = 6;
|
||||
char *uhd_args = "";
|
||||
|
||||
float uhd_amp=0.25, uhd_gain=10.0, uhd_freq=2400000000;
|
||||
|
||||
filesink_t fsink;
|
||||
lte_fft_t ifft;
|
||||
pbch_t pbch;
|
||||
|
||||
cf_t *slot_buffer = NULL, *output_buffer = NULL;
|
||||
int slot_n_re, slot_n_samples;
|
||||
|
||||
#define UHD_SAMP_FREQ 1920000
|
||||
|
||||
void usage(char *prog) {
|
||||
printf("Usage: %s [agmfoncvp]\n", prog);
|
||||
#ifndef DISABLE_UHD
|
||||
printf("\t-a UHD args [Default %s]\n", uhd_args);
|
||||
printf("\t-g UHD TX gain [Default %.2f dB]\n", uhd_gain);
|
||||
printf("\t-m UHD signal amplitude [Default %.2f]\n", uhd_amp);
|
||||
printf("\t-f UHD TX frequency [Default %.1f MHz]\n", uhd_freq/1000000);
|
||||
#else
|
||||
printf("\t UHD is disabled. CUHD library not available\n");
|
||||
#endif
|
||||
printf("\t-o output_file [Default USRP]\n");
|
||||
printf("\t-n number of frames [Default %d]\n", nof_frames);
|
||||
printf("\t-c cell id [Default %d]\n", cell_id);
|
||||
printf("\t-p nof_prb [Default %d]\n", nof_prb);
|
||||
printf("\t-v [set verbose to debug, default none]\n");
|
||||
}
|
||||
|
||||
void parse_args(int argc, char **argv) {
|
||||
int opt;
|
||||
while ((opt = getopt(argc, argv, "agfmoncpv")) != -1) {
|
||||
switch(opt) {
|
||||
case 'a':
|
||||
uhd_args = argv[optind];
|
||||
break;
|
||||
case 'g':
|
||||
uhd_gain = atof(argv[optind]);
|
||||
break;
|
||||
case 'm':
|
||||
uhd_amp = atof(argv[optind]);
|
||||
break;
|
||||
case 'f':
|
||||
uhd_freq = atof(argv[optind]);
|
||||
break;
|
||||
case 'o':
|
||||
output_file_name = argv[optind];
|
||||
break;
|
||||
case 'n':
|
||||
nof_frames = atoi(argv[optind]);
|
||||
break;
|
||||
case 'p':
|
||||
nof_prb = atoi(argv[optind]);
|
||||
break;
|
||||
case 'c':
|
||||
cell_id = atoi(argv[optind]);
|
||||
break;
|
||||
case 'v':
|
||||
verbose++;
|
||||
break;
|
||||
default:
|
||||
usage(argv[0]);
|
||||
exit(-1);
|
||||
}
|
||||
}
|
||||
#ifdef DISABLE_UHD
|
||||
if (!output_file_name) {
|
||||
usage(argv[0]);
|
||||
exit(-1);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
void base_init() {
|
||||
/* init memory */
|
||||
slot_buffer = malloc(sizeof(cf_t) * slot_n_re);
|
||||
if (!slot_buffer) {
|
||||
perror("malloc");
|
||||
exit(-1);
|
||||
}
|
||||
output_buffer = malloc(sizeof(cf_t) * slot_n_samples);
|
||||
if (!output_buffer) {
|
||||
perror("malloc");
|
||||
exit(-1);
|
||||
}
|
||||
/* open file or USRP */
|
||||
if (output_file_name) {
|
||||
if (filesink_init(&fsink, output_file_name, COMPLEX_FLOAT_BIN)) {
|
||||
fprintf(stderr, "Error opening file %s\n", output_file_name);
|
||||
exit(-1);
|
||||
}
|
||||
} else {
|
||||
#ifndef DISABLE_UHD
|
||||
printf("Opening UHD device...\n");
|
||||
if (cuhd_open(uhd_args,&uhd)) {
|
||||
fprintf(stderr, "Error opening uhd\n");
|
||||
exit(-1);
|
||||
}
|
||||
#else
|
||||
printf("Error UHD not available. Select an output file\n");
|
||||
exit(-1);
|
||||
#endif
|
||||
}
|
||||
|
||||
/* create ifft object */
|
||||
if (lte_ifft_init(&ifft, CPNORM, nof_prb)) {
|
||||
fprintf(stderr, "Error creating iFFT object\n");
|
||||
exit(-1);
|
||||
}
|
||||
if (pbch_init(&pbch, 6, cell_id, CPNORM)) {
|
||||
fprintf(stderr, "Error creating PBCH object\n");
|
||||
exit(-1);
|
||||
}
|
||||
}
|
||||
|
||||
void base_free() {
|
||||
|
||||
pbch_free(&pbch);
|
||||
|
||||
lte_ifft_free(&ifft);
|
||||
|
||||
if (slot_buffer) {
|
||||
free(slot_buffer);
|
||||
}
|
||||
if (output_buffer) {
|
||||
free(output_buffer);
|
||||
}
|
||||
if (output_file_name) {
|
||||
filesink_free(&fsink);
|
||||
} else {
|
||||
#ifndef DISABLE_UHD
|
||||
cuhd_close(&uhd);
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
int main(int argc, char **argv) {
|
||||
int nf, ns, N_id_2;
|
||||
cf_t pss_signal[PSS_LEN];
|
||||
float sss_signal0[SSS_LEN]; // for subframe 0
|
||||
float sss_signal5[SSS_LEN]; // for subframe 5
|
||||
pbch_mib_t mib;
|
||||
refsignal_t refs[NSLOTS_X_FRAME];
|
||||
int i;
|
||||
cf_t *slot1_symbols[MAX_PORTS_CTRL];
|
||||
|
||||
|
||||
#ifdef DISABLE_UHD
|
||||
if (argc < 3) {
|
||||
usage(argv[0]);
|
||||
exit(-1);
|
||||
}
|
||||
#endif
|
||||
|
||||
parse_args(argc,argv);
|
||||
|
||||
N_id_2 = cell_id%3;
|
||||
slot_n_re = CPNORM_NSYMB * nof_prb * RE_X_RB;
|
||||
slot_n_samples = SLOT_LEN_CPNORM(lte_symbol_sz(nof_prb));
|
||||
|
||||
/* this *must* be called after setting slot_len_* */
|
||||
base_init();
|
||||
|
||||
/* Generate PSS/SSS signals */
|
||||
pss_generate(pss_signal, N_id_2);
|
||||
sss_generate(sss_signal0, sss_signal5, cell_id);
|
||||
|
||||
/* Generate CRS signals */
|
||||
for (i=0;i<NSLOTS_X_FRAME;i++) {
|
||||
if (refsignal_init_LTEDL(&refs[i], 0, i, cell_id, CPNORM, nof_prb)) {
|
||||
fprintf(stderr, "Error initiating CRS slot=%d\n", i);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
mib.nof_ports = 1;
|
||||
mib.nof_prb = 6;
|
||||
mib.phich_length = PHICH_NORM;
|
||||
mib.phich_resources = R_1;
|
||||
mib.sfn = 0;
|
||||
|
||||
for (i=0;i<MAX_PORTS_CTRL;i++) { // now there's only 1 port
|
||||
slot1_symbols[i] = slot_buffer;
|
||||
}
|
||||
|
||||
#ifndef DISABLE_UHD
|
||||
if (!output_file_name) {
|
||||
printf("Set TX rate: %.2f MHz\n", cuhd_set_tx_srate(uhd, UHD_SAMP_FREQ)/1000000);
|
||||
printf("Set TX gain: %.1f dB\n", cuhd_set_tx_gain(uhd, uhd_gain));
|
||||
printf("Set TX freq: %.2f MHz\n", cuhd_set_tx_freq(uhd, uhd_freq)/1000000);
|
||||
}
|
||||
#endif
|
||||
|
||||
nf = 0;
|
||||
|
||||
while(nf<nof_frames || nof_frames == -1) {
|
||||
for (ns=0;ns<NSLOTS_X_FRAME;ns++) {
|
||||
bzero(slot_buffer, sizeof(cf_t) * slot_n_re);
|
||||
|
||||
switch(ns) {
|
||||
case 0: // tx pss/sss
|
||||
case 10: // tx pss/sss
|
||||
pss_put_slot(pss_signal, slot_buffer, nof_prb, CPNORM);
|
||||
sss_put_slot(ns?sss_signal5:sss_signal0, slot_buffer, nof_prb, CPNORM);
|
||||
break;
|
||||
case 1: // tx pbch
|
||||
pbch_encode(&pbch, &mib, slot1_symbols, 1);
|
||||
break;
|
||||
default: // transmit zeros
|
||||
break;
|
||||
}
|
||||
|
||||
refsignal_put(&refs[ns], slot_buffer);
|
||||
|
||||
/* Transform to OFDM symbols */
|
||||
lte_ifft_run(&ifft, slot_buffer, output_buffer);
|
||||
|
||||
/* send to file or usrp */
|
||||
if (output_file_name) {
|
||||
filesink_write(&fsink, output_buffer, slot_n_samples);
|
||||
usleep(5000);
|
||||
} else {
|
||||
#ifndef DISABLE_UHD
|
||||
vec_sc_prod_cfc(output_buffer, uhd_amp, output_buffer, slot_n_samples);
|
||||
cuhd_send(uhd, output_buffer, slot_n_samples, 1);
|
||||
#endif
|
||||
}
|
||||
}
|
||||
mib.sfn=(mib.sfn+1)%1024;
|
||||
printf("SFN: %4d\r", mib.sfn);fflush(stdout);
|
||||
nf++;
|
||||
}
|
||||
|
||||
base_free();
|
||||
|
||||
printf("Done\n");
|
||||
exit(0);
|
||||
}
|
||||
Loading…
Reference in New Issue