int main(int argc, char **argv) {
pbch_mib_t mib;
int n;
if (argc < 3) {
usage(argv[0]);
exit(-1);
}
parse_args(argc,argv);
if (base_init()) {
fprintf(stderr, "Error initializing receiver\n");
exit(-1);
}
n = filesource_read(&fsrc, input_buffer, FLEN);
lte_fft_run_sf(&fft, input_buffer, fft_buffer);
if (fmatlab) {
fprintf(fmatlab, "outfft=");
vec_sc_prod_cfc(fft_buffer, 1000.0, fft_buffer, CP_NSYMB(cell.cp) * cell.nof_prb * RE_X_RB);
vec_fprint_c(fmatlab, fft_buffer, CP_NSYMB(cell.cp) * cell.nof_prb * RE_X_RB);
fprintf(fmatlab, ";\n");
vec_sc_prod_cfc(fft_buffer, 0.001, fft_buffer, CP_NSYMB(cell.cp) * cell.nof_prb * RE_X_RB);
}
/* Get channel estimates for each port */
chest_ce_sf(&chest, fft_buffer, ce, 0);
INFO("Decoding PBCH\n", 0);
n = pbch_decode(&pbch, fft_buffer, ce, &mib);
base_free();
if (n < 0) {
fprintf(stderr, "Error decoding PBCH\n");
exit(-1);
} else if (n == 0) {
printf("Could not decode PBCH\n");
exit(-1);
} else {
if (mib.nof_ports == 2 && mib.nof_prb == 50 && mib.phich_length == PHICH_NORM
&& mib.phich_resources == R_1 && mib.sfn == 28) {
pbch_mib_fprint(stdout, &mib, cell.id);
printf("This is the signal.1.92M.dat file\n");
exit(0);
} else {
pbch_mib_fprint(stdout, &mib, cell.id);
printf("This is an unknown file\n");
exit(-1);
}
}
}
int main(int argc, char **argv) {
pbch_t pbch;
pbch_mib_t mib_tx, mib_rx;
int i, j;
cf_t *ce[MAX_PORTS];
int nof_re;
cf_t *sf_symbols[MAX_PORTS];
parse_args(argc,argv);
nof_re = 2 * CPNORM_NSYMB * cell.nof_prb * RE_X_RB;
/* init memory */
for (i=0;i<cell.nof_ports;i++) {
ce[i] = malloc(sizeof(cf_t) * nof_re);
if (!ce[i]) {
perror("malloc");
exit(-1);
}
for (j=0;j<nof_re;j++) {
ce[i][j] = 1;
}
sf_symbols[i] = malloc(sizeof(cf_t) * nof_re);
if (!sf_symbols[i]) {
perror("malloc");
exit(-1);
}
}
if (pbch_init(&pbch, cell)) {
fprintf(stderr, "Error creating PBCH object\n");
exit(-1);
}
mib_tx.nof_ports = cell.nof_ports;
mib_tx.nof_prb = 50;
mib_tx.phich_length = PHICH_EXT;
mib_tx.phich_resources = R_1_6;
mib_tx.sfn = 124;
pbch_encode(&pbch, &mib_tx, sf_symbols);
/* combine outputs */
for (i=1;i<cell.nof_ports;i++) {
for (j=0;j<nof_re;j++) {
sf_symbols[0][j] += sf_symbols[i][j];
}
}
pbch_decode_reset(&pbch);
if (1 != pbch_decode(&pbch, sf_symbols[0], ce, &mib_rx)) {
printf("Error decoding\n");
exit(-1);
}
pbch_free(&pbch);
for (i=0;i<cell.nof_ports;i++) {
free(ce[i]);
free(sf_symbols[i]);
}
if (!memcmp(&mib_tx, &mib_rx, sizeof(pbch_mib_t))) {
printf("OK\n");
exit(0);
} else {
pbch_mib_fprint(stdout, &mib_rx);
exit(-1);
}
}
