130 lines
3.1 KiB
C
130 lines
3.1 KiB
C
/**
|
|
*
|
|
* \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 <unistd.h>
|
|
#include <math.h>
|
|
#include <time.h>
|
|
#include <sys/time.h>
|
|
#include <complex.h>
|
|
|
|
#include "srslte/srslte.h"
|
|
|
|
#define MAX_LEN 70176
|
|
|
|
|
|
uint32_t N_ifft_ul = 1536;
|
|
uint32_t config_idx = 3;
|
|
uint32_t root_seq_idx = 0;
|
|
uint32_t zero_corr_zone = 15;
|
|
|
|
void usage(char *prog) {
|
|
printf("Usage: %s\n", prog);
|
|
printf("\t-N Uplink IFFT size [Default %d]\n", N_ifft_ul);
|
|
printf("\t-f Preamble format [Default 0]\n");
|
|
printf("\t-r Root sequence index [Default 0]\n");
|
|
printf("\t-z Zero correlation zone config [Default 1]\n");
|
|
}
|
|
|
|
void parse_args(int argc, char **argv) {
|
|
int opt;
|
|
while ((opt = getopt(argc, argv, "Nfrz")) != -1) {
|
|
switch (opt) {
|
|
case 'N':
|
|
N_ifft_ul = atoi(argv[optind]);
|
|
break;
|
|
case 'f':
|
|
config_idx = atoi(argv[optind]);
|
|
break;
|
|
case 'r':
|
|
root_seq_idx = atoi(argv[optind]);
|
|
break;
|
|
case 'z':
|
|
zero_corr_zone = atoi(argv[optind]);
|
|
break;
|
|
default:
|
|
usage(argv[0]);
|
|
exit(-1);
|
|
}
|
|
}
|
|
}
|
|
|
|
int main(int argc, char **argv) {
|
|
parse_args(argc, argv);
|
|
|
|
srslte_prach_t *p = (srslte_prach_t*)malloc(sizeof(srslte_prach_t));
|
|
|
|
bool high_speed_flag = false;
|
|
|
|
cf_t preamble[MAX_LEN];
|
|
memset(preamble, 0, sizeof(cf_t)*MAX_LEN);
|
|
|
|
srslte_prach_init(p, N_ifft_ul);
|
|
|
|
srslte_prach_set_cell( p,
|
|
N_ifft_ul,
|
|
config_idx,
|
|
root_seq_idx,
|
|
high_speed_flag,
|
|
zero_corr_zone);
|
|
|
|
uint32_t seq_index = 0;
|
|
uint32_t frequency_offset = 0;
|
|
|
|
uint32_t indices[64];
|
|
uint32_t n_indices = 0;
|
|
for(int i=0;i<64;i++)
|
|
indices[i] = 0;
|
|
|
|
for(seq_index=0;seq_index<64;seq_index++)
|
|
{
|
|
srslte_prach_gen(p,
|
|
seq_index,
|
|
frequency_offset,
|
|
preamble);
|
|
|
|
uint32_t prach_len = p->N_seq;
|
|
|
|
struct timeval t[3];
|
|
gettimeofday(&t[1], NULL);
|
|
srslte_prach_detect(p, frequency_offset, &preamble[p->N_cp], prach_len, indices, &n_indices);
|
|
gettimeofday(&t[2], NULL);
|
|
get_time_interval(t);
|
|
printf("texec=%ld us\n", t[0].tv_usec);
|
|
if(n_indices != 1 || indices[0] != seq_index)
|
|
return -1;
|
|
}
|
|
|
|
srslte_prach_free(p);
|
|
free(p);
|
|
|
|
printf("Done\n");
|
|
exit(0);
|
|
}
|