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srsLTE
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Merge pull request #97 from softwareradiosystems/misc 

Misc
This commit is contained in:
Ismael Gomez 2017-11-13 16:04:48 +01:00 committed by GitHub
parent e5f78b1620 861d65b070
commit cdb788617b
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 81 additions and 12 deletions
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25
lib/examples/pdsch_ue.c
View File

@ -326,7 +326,8 @@ srslte_netsink_t net_sink, net_sink_signal;
#define PRINT_LINE_ADVANCE_CURSOR() printf("\033[%dB", prev_nof_lines + 1)
int main(int argc, char **argv) {
int ret;
struct timeval t[3];
int ret;
int decimate = 1;
srslte_cell_t cell;
int64_t sf_cnt;
@ -559,7 +560,7 @@ int main(int argc, char **argv) {
// Variables for measurements
uint32_t nframes=0;
uint8_t ri = 0, pmi = 0;
float rsrp0=0.0, rsrp1=0.0, rsrq=0.0, noise=0.0, enodebrate = 0.0, uerate = 0.0,
float rsrp0=0.0, rsrp1=0.0, rsrq=0.0, noise=0.0, enodebrate = 0.0, uerate = 0.0, procrate = 0.0,
sinr[SRSLTE_MAX_LAYERS][SRSLTE_MAX_CODEBOOKS], cn = 0.0;
bool decode_pdsch = false;
@ -655,6 +656,7 @@ int main(int argc, char **argv) {
decode_pdsch = false;
}
}
gettimeofday(&t[1], NULL);
if (decode_pdsch) {
if(sfidx != 1 || prog_args.mbsfn_area_id < 0){ // Not an MBSFN subframe
if (cell.nof_ports == 1) {
@ -690,6 +692,8 @@ int main(int argc, char **argv) {
INFO("mbsfn PDU size is %d\n", n);
}
}
gettimeofday(&t[2], NULL);
get_time_interval(t);
if (n < 0) {
// fprintf(stderr, "Error decoding UE DL\n");fflush(stdout);
} else if (n > 0) {
@ -723,16 +727,19 @@ int main(int argc, char **argv) {
}
nof_trials++;
nof_trials++;
uint32_t nof_bits = ((acks[0]?ue_dl.pdsch_cfg.grant.mcs[0].tbs:0) + (acks[1]?ue_dl.pdsch_cfg.grant.mcs[1].tbs:0));
rsrq = SRSLTE_VEC_EMA(srslte_chest_dl_get_rsrq(&ue_dl.chest), rsrq, 0.1f);
rsrp0 = SRSLTE_VEC_EMA(srslte_chest_dl_get_rsrp_port(&ue_dl.chest, 0), rsrp0, 0.05f);
rsrp1 = SRSLTE_VEC_EMA(srslte_chest_dl_get_rsrp_port(&ue_dl.chest, 1), rsrp1, 0.05f);
noise = SRSLTE_VEC_EMA(srslte_chest_dl_get_noise_estimate(&ue_dl.chest), noise, 0.05f);
enodebrate = SRSLTE_VEC_EMA((ue_dl.pdsch_cfg.grant.mcs[0].tbs + ue_dl.pdsch_cfg.grant.mcs[1].tbs)/1000.0f, enodebrate, 0.05f);
uerate = SRSLTE_VEC_EMA(((acks[0]?ue_dl.pdsch_cfg.grant.mcs[0].tbs:0) + (acks[1]?ue_dl.pdsch_cfg.grant.mcs[1].tbs:0))/1000.0f, uerate, 0.01f);
enodebrate = SRSLTE_VEC_EMA(nof_bits/1000.0f, enodebrate, 0.05f);
uerate = SRSLTE_VEC_EMA(nof_bits/1000.0f, uerate, 0.001f);
float elapsed = (float) t[0].tv_usec + t[0].tv_sec*1.0e+6f;
if (elapsed != 0.0f) {
procrate = SRSLTE_VEC_EMA(nof_bits/elapsed, procrate, 0.01f);
}
nframes++;
if (isnan(rsrq)) {
@ -769,7 +776,7 @@ int main(int argc, char **argv) {
PRINT_LINE("nof codewords: %d", SRSLTE_RA_DL_GRANT_NOF_TB(&ue_dl.pdsch_cfg.grant));
PRINT_LINE(" CFO: %+5.2f kHz", srslte_ue_sync_get_cfo(&ue_sync) / 1000);
PRINT_LINE(" SNR: %+5.1f dB | %+5.1f dB", 10 * log10(rsrp0 / noise), 10 * log10(rsrp1 / noise));
PRINT_LINE(" Rb: %6.2f / %6.2f Mbps (net/maximum)", uerate, enodebrate);
PRINT_LINE(" Rb: %6.2f / %6.2f / %6.2f Mbps (net/maximum/processing)", uerate, enodebrate, procrate);
PRINT_LINE(" PDCCH-Miss: %5.2f%%", 100 * (1 - (float) ue_dl.nof_detected / nof_trials));
PRINT_LINE(" PDSCH-BLER: %5.2f%%", (float) 100 * ue_dl.pdsch_pkt_errors / ue_dl.pdsch_pkts_total);
if(prog_args.mbsfn_area_id > -1){

68
lib/src/phy/rf/rf_uhd_imp.c
View File

@ -291,6 +291,13 @@ int rf_uhd_open(char *args, void **h)
return rf_uhd_open_multi(args, h, 1);
}
#define REMOVE_SUBSTRING_WITHCOMAS(S, TOREMOVE) \
remove_substring(S, TOREMOVE ",");\
remove_substring(S, TOREMOVE ", ");\
remove_substring(S, "," TOREMOVE);\
remove_substring(S, ", " TOREMOVE);\
remove_substring(S, TOREMOVE)
static void remove_substring(char *s,const char *toremove)
{
while((s=strstr(s,toremove))) {
@ -298,6 +305,17 @@ static void remove_substring(char *s,const char *toremove)
}
}
static void copy_subdev_string(char *dst, char *src) {
int n = 0;
size_t len = strlen(src);
/* Copy until end of string or comma */
while (n < len && src != '\0' && src[n] != ',') {
dst[n] = src[n];
n++;
}
dst[n] = '\0';
}
int rf_uhd_open_multi(char *args, void **h, uint32_t nof_channels)
{
if (h) {
@ -336,11 +354,11 @@ int rf_uhd_open_multi(char *args, void **h, uint32_t nof_channels)
// Check external clock argument
enum {DEFAULT, EXTERNAL, GPSDO} clock_src;
if (strstr(args, "clock=external")) {
remove_substring(args, "clock=external");
REMOVE_SUBSTRING_WITHCOMAS(args, "clock=external");
clock_src = EXTERNAL;
} else if (strstr(args, "clock=gpsdo")) {
printf("Using GPSDO clock\n");
remove_substring(args, "clock=gpsdo");
REMOVE_SUBSTRING_WITHCOMAS(args, "clock=gpsdo");
clock_src = GPSDO;
} else {
clock_src = DEFAULT;
@ -349,14 +367,36 @@ int rf_uhd_open_multi(char *args, void **h, uint32_t nof_channels)
// Set over the wire format
char *otw_format = "sc16";
if (strstr(args, "otw_format=sc12")) {
REMOVE_SUBSTRING_WITHCOMAS(args, "otw_format=sc12");
otw_format = "sc12";
} else if (strstr(args, "otw_format=sc16")) {
REMOVE_SUBSTRING_WITHCOMAS(args, "otw_format=sc16");
/* Do nothing */
} else if (strstr(args, "otw_format=")) {
fprintf(stderr, "Wrong over the wire format. Valid formats: sc12, sc16\n");
return -1;
}
// Set transmitter subdevice spec string
const char tx_subdev_arg[] = "tx_subdev_spec=";
char tx_subdev_str[64] = {0};
char *tx_subdev_ptr = strstr(args, tx_subdev_arg);
if (tx_subdev_ptr) {
copy_subdev_string(tx_subdev_str, tx_subdev_ptr + strlen(tx_subdev_arg));
remove_substring(args, tx_subdev_arg);
remove_substring(args, tx_subdev_str);
}
// Set receiver subdevice spec string
const char rx_subdev_arg[] = "rx_subdev_spec=";
char rx_subdev_str[64] = {0};
char *rx_subdev_ptr = strstr(args, rx_subdev_arg);
if (rx_subdev_ptr) {
copy_subdev_string(rx_subdev_str, rx_subdev_ptr + strlen(rx_subdev_arg));
remove_substring(args, rx_subdev_arg);
remove_substring(args, rx_subdev_str);
}
/* If device type or name not given in args, choose a B200 */
if (args[0]=='\0') {
if (find_string(devices_str, "type=b200") && !strstr(args, "recv_frame_size")) {
@ -396,7 +436,29 @@ int rf_uhd_open_multi(char *args, void **h, uint32_t nof_channels)
fprintf(stderr, "Error opening UHD: code %d\n", error);
return -1;
}
/* Set transmitter subdev spec if specified */
if (strlen(tx_subdev_str)) {
uhd_subdev_spec_handle subdev_spec_handle = {0};
printf("Setting tx_subdev_spec to '%s'\n", tx_subdev_str);
uhd_subdev_spec_make(&subdev_spec_handle, tx_subdev_str);
uhd_usrp_set_tx_subdev_spec(handler->usrp, subdev_spec_handle, 0);
uhd_subdev_spec_free(&subdev_spec_handle);
}
/* Set receiver subdev spec if specified */
if (strlen(rx_subdev_str)) {
uhd_subdev_spec_handle subdev_spec_handle = {0};
printf("Setting rx_subdev_spec to '%s'\n", rx_subdev_str);
uhd_subdev_spec_make(&subdev_spec_handle, rx_subdev_str);
uhd_usrp_set_rx_subdev_spec(handler->usrp, subdev_spec_handle, 0);
uhd_subdev_spec_free(&subdev_spec_handle);
}
if (!handler->devname) {
char dev_str[1024];
uhd_usrp_get_mboard_name(handler->usrp, 0, dev_str, 1024);