mirror of https://github.com/pvnis/srsRAN_4G.git
Added PUSCH DRMS signal generation
ismagom
10 years ago
parent
729519ac7e
commit
9a614ec9d1
@ -1,249 +0,0 @@
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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 <strings.h>
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#include <unistd.h>
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#include <complex.h>
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#include "liblte/phy/phy.h"
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lte_cell_t cell = {
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6, // nof_prb
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MAX_PORTS, // nof_ports
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1000, // cell_id
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CPNORM // cyclic prefix
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};
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uint8_t *output_matlab = NULL;
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void usage(char *prog) {
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printf("Usage: %s [recov]\n", prog);
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printf("\t-r nof_prb [Default %d]\n", cell.nof_prb);
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printf("\t-e extended cyclic prefix [Default normal]\n");
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printf("\t-c cell_id (1000 tests all). [Default %d]\n", cell.id);
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printf("\t-o output matlab file [Default %s]\n",output_matlab?output_matlab:"None");
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printf("\t-v increase verbosity\n");
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}
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void parse_args(int argc, char **argv) {
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int opt;
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while ((opt = getopt(argc, argv, "recov")) != -1) {
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switch(opt) {
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case 'r':
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cell.nof_prb = atoi(argv[optind]);
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break;
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case 'e':
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cell.cp = CPEXT;
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break;
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case 'c':
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cell.id = atoi(argv[optind]);
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break;
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case 'o':
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output_matlab = argv[optind];
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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(argv[0]);
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exit(-1);
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}
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}
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}
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int check_mse(float mod, float arg, int n_port) {
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INFO("mod=%.4f, arg=%.4f, n_port=%d\n", mod, arg, n_port);
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switch(n_port) {
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case 0:
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if (mod > 0.029) {
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return -1;
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}
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if (arg > 0.029) {
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return -1;
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}
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break;
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case 1:
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if (mod > 0.012) {
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return -1;
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}
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if (arg > 0.012) {
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return -1;
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}
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break;
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case 2:
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case 3:
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if (mod > 3.33) {
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return -1;
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}
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if (arg > 0.63) {
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return -1;
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}
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break;
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default:
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return -1;
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}
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return 0;
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}
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int main(int argc, char **argv) {
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chest_t eq;
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cf_t *input = NULL, *ce = NULL, *h = NULL;
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refsignal_t refs;
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int i, j, n_port, n_slot, cid, num_re;
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int ret = -1;
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int max_cid;
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FILE *fmatlab = NULL;
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float mse_mag, mse_phase;
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parse_args(argc,argv);
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if (output_matlab) {
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fmatlab=fopen(output_matlab, "w");
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if (!fmatlab) {
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perror("fopen");
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goto do_exit;
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}
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}
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num_re = cell.nof_prb * RE_X_RB * CP_NSYMB(cell.cp);
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input = malloc(num_re * sizeof(cf_t));
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if (!input) {
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perror("malloc");
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goto do_exit;
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}
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h = malloc(num_re * sizeof(cf_t));
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if (!h) {
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perror("malloc");
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goto do_exit;
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}
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ce = malloc(num_re * sizeof(cf_t));
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if (!ce) {
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perror("malloc");
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goto do_exit;
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}
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if (cell.id == 1000) {
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cid = 0;
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max_cid = 504;
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} else {
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cid = cell.id;
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max_cid = cell.id;
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}
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while(cid <= max_cid) {
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cell.id = cid;
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if (chest_init_LTEUL(&eq, cell)) {
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fprintf(stderr, "Error initializing equalizer\n");
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goto do_exit;
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}
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for (n_slot=0;n_slot<NSLOTS_X_FRAME;n_slot++) {
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for (n_port=0;n_port<cell.nof_ports;n_port++) {
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if (refsignal_init_LTEDL(&refs, n_port, n_slot, cell)) {
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fprintf(stderr, "Error initiating CRS slot=%d\n", i);
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return -1;
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}
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bzero(input, sizeof(cf_t) * num_re);
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for (i=0;i<num_re;i++) {
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input[i] = 0.5-rand()/RAND_MAX+I*(0.5-rand()/RAND_MAX);
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}
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bzero(ce, sizeof(cf_t) * num_re);
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bzero(h, sizeof(cf_t) * num_re);
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refsignal_put(&refs, input);
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for (i=0;i<CP_NSYMB(cell.cp);i++) {
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for (j=0;j<cell.nof_prb * RE_X_RB;j++) {
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float x = -1+(float) i/CP_NSYMB(cell.cp) + cosf(2 * M_PI * (float) j/cell.nof_prb/RE_X_RB);
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h[i*cell.nof_prb * RE_X_RB+j] = (3+x) * cexpf(I * x);
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input[i*cell.nof_prb * RE_X_RB+j] *= h[i*cell.nof_prb * RE_X_RB+j];
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}
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}
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chest_ce_slot_port(&eq, input, ce, n_slot, n_port);
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mse_mag = mse_phase = 0;
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for (i=0;i<num_re;i++) {
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mse_mag += (cabsf(h[i]) - cabsf(ce[i])) * (cabsf(h[i]) - cabsf(ce[i])) / num_re;
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mse_phase += (cargf(h[i]) - cargf(ce[i])) * (cargf(h[i]) - cargf(ce[i])) / num_re;
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}
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if (check_mse(mse_mag, mse_phase, n_port)) {
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goto do_exit;
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}
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if (fmatlab) {
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fprintf(fmatlab, "input=");
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vec_fprint_c(fmatlab, input, num_re);
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fprintf(fmatlab, ";\n");
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fprintf(fmatlab, "h=");
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vec_fprint_c(fmatlab, h, num_re);
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fprintf(fmatlab, ";\n");
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fprintf(fmatlab, "ce=");
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vec_fprint_c(fmatlab, ce, num_re);
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fprintf(fmatlab, ";\n");
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chest_fprint(&eq, fmatlab, n_slot, n_port);
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}
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}
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}
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chest_free(&eq);
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cid+=10;
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INFO("cid=%d\n", cid);
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}
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ret = 0;
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do_exit:
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if (ce) {
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free(ce);
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}
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if (input) {
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free(input);
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}
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if (h) {
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free(h);
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}
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if (!ret) {
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printf("OK\n");
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} else {
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printf("Error at cid=%d, slot=%d, port=%d\n",cid, n_slot, n_port);
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}
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exit(ret);
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}
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@ -0,0 +1,147 @@
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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 <string.h>
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#include "liblte/phy/phy.h"
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#include "liblte/mex/mexutils.h"
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/** MEX function to be called from MATLAB to test the channel estimator
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*/
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#define UECFG prhs[0]
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#define PUSCHCFG prhs[1]
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#define NOF_INPUTS 2
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void help()
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{
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mexErrMsgTxt
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("[seq] = liblte_refsignal_pusch(ueConfig, puschConfig)\n\n");
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}
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extern int indices[2048];
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/* the gateway function */
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void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
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{
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lte_cell_t cell;
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refsignal_ul_t refs;
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refsignal_drms_pusch_cfg_t pusch_cfg;
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cf_t *signal;
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uint32_t sf_idx;
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if (nrhs != NOF_INPUTS) {
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help();
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return;
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}
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if (mexutils_read_uint32_struct(UECFG, "NCellID", &cell.id)) {
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mexErrMsgTxt("Field NCellID not found in UE config\n");
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return;
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}
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cell.nof_prb = 100;
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cell.cp = CPNORM;
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cell.nof_ports = 1;
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if (mexutils_read_uint32_struct(UECFG, "NSubframe", &sf_idx)) {
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mexErrMsgTxt("Field NSubframe not found in UE config\n");
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return;
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}
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bzero(&pusch_cfg, sizeof(refsignal_drms_pusch_cfg_t));
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char *tmp = mexutils_get_char_struct(UECFG, "Hopping");
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if (tmp) {
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if (!strcmp(tmp, "Group")) {
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pusch_cfg.hopping_method = HOPPING_GROUP;
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} else if (!strcmp(tmp, "Sequence")) {
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pusch_cfg.hopping_method = HOPPING_SEQUENCE;
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} else {
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pusch_cfg.hopping_method = HOPPING_OFF;
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}
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mxFree(tmp);
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} else {
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pusch_cfg.hopping_method = HOPPING_OFF;
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}
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if (mexutils_read_uint32_struct(UECFG, "SeqGroup", &pusch_cfg.common.delta_ss)) {
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pusch_cfg.common.delta_ss = 0;
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}
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if (mexutils_read_uint32_struct(UECFG, "CyclicShift", &pusch_cfg.common.cyclic_shift)) {
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pusch_cfg.common.cyclic_shift = 0;
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}
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float *prbset;
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mxArray *p;
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p = mxGetField(PUSCHCFG, 0, "PRBSet");
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if (!p) {
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mexErrMsgTxt("Error field PRBSet not found in PUSCH config\n");
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return;
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}
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pusch_cfg.nof_prb = mexutils_read_f(p, &prbset);
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free(prbset);
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if (mexutils_read_uint32_struct(PUSCHCFG, "DynCyclicShift", &pusch_cfg.common.cyclic_shift_for_drms)) {
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pusch_cfg.common.cyclic_shift_for_drms = 0;
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pusch_cfg.common.en_drms_2 = false;
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} else {
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pusch_cfg.common.en_drms_2 = true;
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}
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pusch_cfg.beta_pusch = 1.0;
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if (refsignal_ul_init(&refs, cell)) {
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mexErrMsgTxt("Error initiating refsignal_ul\n");
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return;
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}
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mexPrintf("nof_prb: %d, ",pusch_cfg.nof_prb);
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mexPrintf("cyclic_shift: %d, ",pusch_cfg.common.cyclic_shift);
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mexPrintf("cyclic_shift_for_drms: %d, ",pusch_cfg.common.cyclic_shift_for_drms);
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mexPrintf("delta_ss: %d, ",pusch_cfg.common.delta_ss);
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mexPrintf("hopping_method: %d\n, ",pusch_cfg.hopping_method);
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signal = vec_malloc(2*RE_X_RB*pusch_cfg.nof_prb*sizeof(cf_t));
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if (!signal) {
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perror("malloc");
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return;
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}
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for (uint32_t i=0;i<2;i++) {
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//mexPrintf("Generating DRMS for ns=%d, nof_prb=%d\n", 2*sf_idx+i,pusch_cfg.nof_prb);
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refsignal_dmrs_pusch_gen(&refs, &pusch_cfg, 2*sf_idx+i, &signal[i*RE_X_RB*pusch_cfg.nof_prb]);
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}
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if (nlhs >= 1) {
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mexutils_write_cf(signal, &plhs[0], 2*RE_X_RB*pusch_cfg.nof_prb, 1);
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}
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refsignal_ul_free(&refs);
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free(signal);
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return;
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}
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@ -0,0 +1,144 @@
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/**
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*
|
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* \section COPYRIGHT
|
||||
*
|
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* 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/.
|
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*
|
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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 <strings.h>
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#include <unistd.h>
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#include <complex.h>
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#include "liblte/phy/phy.h"
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lte_cell_t cell = {
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6, // nof_prb
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MAX_PORTS, // nof_ports
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0, // cell_id
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CPNORM // cyclic prefix
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};
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void usage(char *prog) {
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printf("Usage: %s [recv]\n", prog);
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printf("\t-r nof_prb [Default %d]\n", cell.nof_prb);
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printf("\t-e extended cyclic prefix [Default normal]\n");
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|
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printf("\t-c cell_id (1000 tests all). [Default %d]\n", cell.id);
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|
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printf("\t-v increase verbosity\n");
|
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}
|
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|
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void parse_args(int argc, char **argv) {
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int opt;
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while ((opt = getopt(argc, argv, "recv")) != -1) {
|
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switch(opt) {
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case 'r':
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cell.nof_prb = atoi(argv[optind]);
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break;
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case 'e':
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cell.cp = CPEXT;
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break;
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case 'c':
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cell.id = atoi(argv[optind]);
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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(argv[0]);
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exit(-1);
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}
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}
|
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}
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|
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lte_hopping_method_t hopping_modes[3]={HOPPING_OFF, HOPPING_GROUP, HOPPING_SEQUENCE};
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int main(int argc, char **argv) {
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refsignal_ul_t refs;
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refsignal_drms_pusch_cfg_t pusch_cfg;
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cf_t *signal = NULL;
|
||||
int i, j;
|
||||
int ret = -1;
|
||||
|
||||
parse_args(argc,argv);
|
||||
|
||||
signal = malloc(RE_X_RB * cell.nof_prb * sizeof(cf_t));
|
||||
if (!signal) {
|
||||
perror("malloc");
|
||||
goto do_exit;
|
||||
}
|
||||
|
||||
if (refsignal_ul_init(&refs, cell)) {
|
||||
fprintf(stderr, "Error initializing UL reference signal\n");
|
||||
goto do_exit;
|
||||
}
|
||||
|
||||
printf("Running tests for %d PRB\n", cell.nof_prb);
|
||||
|
||||
for (int n=3;n<cell.nof_prb;n++) {
|
||||
for (int delta_ss=0;delta_ss<NOF_DELTA_SS;delta_ss++) {
|
||||
for (int cshift=0;cshift<NOF_CSHIFT;cshift++) {
|
||||
for (int h=0;h<3;h++) {
|
||||
for (int ns=0;ns<NSLOTS_X_FRAME;ns++) {
|
||||
for (int cshift_drms=5;cshift_drms<NOF_CSHIFT;cshift_drms++) {
|
||||
pusch_cfg.beta_pusch = 1.0;
|
||||
pusch_cfg.nof_prb = n;
|
||||
pusch_cfg.common.cyclic_shift = cshift;
|
||||
pusch_cfg.common.cyclic_shift_for_drms = cshift_drms;
|
||||
pusch_cfg.common.delta_ss = delta_ss;
|
||||
pusch_cfg.hopping_method = hopping_modes[h];
|
||||
pusch_cfg.common.en_drms_2 = true;
|
||||
printf("Beta: %f, ",pusch_cfg.beta_pusch);
|
||||
printf("nof_prb: %d, ",pusch_cfg.nof_prb);
|
||||
printf("cyclic_shift: %d, ",pusch_cfg.common.cyclic_shift);
|
||||
printf("cyclic_shift_for_drms: %d, ",pusch_cfg.common.cyclic_shift_for_drms);
|
||||
printf("delta_ss: %d, ",pusch_cfg.common.delta_ss);
|
||||
printf("hopping_method: %d, ",pusch_cfg.hopping_method);
|
||||
printf("Slot: %d\n", ns);
|
||||
refsignal_dmrs_pusch_gen(&refs, &pusch_cfg, ns, signal);
|
||||
exit(0);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
ret = 0;
|
||||
|
||||
do_exit:
|
||||
|
||||
if (signal) {
|
||||
free(signal);
|
||||
}
|
||||
|
||||
refsignal_ul_free(&refs);
|
||||
|
||||
if (!ret) {
|
||||
printf("OK\n");
|
||||
}
|
||||
exit(ret);
|
||||
}
|
||||
@ -0,0 +1,48 @@
|
||||
ueConfig=struct('CyclicPrefixUL','Normal','NTxAnts',1);
|
||||
puschConfig=struct('NLayers',1,'OrthCover','Off');
|
||||
|
||||
addpath('../../debug/lte/phy/lib/ch_estimation/test')
|
||||
|
||||
Hopping={'Off','Sequence','Group'};
|
||||
|
||||
k=1;
|
||||
for prb=3:6
|
||||
for ncell=0:2
|
||||
for ns=0:9
|
||||
for h=1:3
|
||||
for sg=0:29
|
||||
for cs=0:7
|
||||
for ds=0:7
|
||||
|
||||
ueConfig.NCellID=ncell;
|
||||
ueConfig.NSubframe=ns;
|
||||
ueConfig.Hopping=Hopping{h};
|
||||
ueConfig.SeqGroup=sg;
|
||||
ueConfig.CyclicShift=cs;
|
||||
|
||||
puschConfig.PRBSet=(0:(prb-1))';
|
||||
puschConfig.DynCyclicShift=ds;
|
||||
|
||||
[mat, info]=ltePUSCHDRS(ueConfig,puschConfig);
|
||||
lib=liblte_refsignal_pusch(ueConfig,puschConfig);
|
||||
|
||||
error(k)=mean(abs(mat-lib));
|
||||
disp(error(k))
|
||||
if (error(k) > 10^-4)
|
||||
k=1;
|
||||
end
|
||||
k=k+1;
|
||||
end
|
||||
end
|
||||
end
|
||||
end
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
plot(error);
|
||||
disp(info)
|
||||
disp(length(mat))
|
||||
n=1:length(mat);
|
||||
plot(n,real(mat(n)),n,real(lib(n)))
|
||||
|
||||
Loading…
Reference in New Issue