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Merge pull request #158 from softwareradiosystems/csi 

Csi
This commit is contained in:
Ismael Gomez 2018-03-07 14:40:57 +01:00 committed by GitHub
parent bdf379ee1c 962164277a
commit 3adc6b5cbc
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
21 changed files with 220 additions and 27 deletions
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1
lib/include/srslte/interfaces/ue_interfaces.h
View File

@ -493,6 +493,7 @@ typedef struct {
bool rssi_sensor_enabled;
bool sic_pss_enabled;
float rx_gain_offset;
bool pdsch_csi_enabled;
} phy_args_t;

3
lib/include/srslte/phy/fec/softbuffer.h
View File

@ -42,6 +42,9 @@
typedef struct SRSLTE_API {
uint32_t max_cb;
int16_t **buffer_f;
uint8_t **data;
bool *cb_crc;
bool tb_crc;
} srslte_softbuffer_rx_t;
typedef struct SRSLTE_API {

3
lib/include/srslte/phy/mimo/precoding.h
View File

@ -79,6 +79,7 @@ SRSLTE_API int srslte_precoding_type(cf_t *x[SRSLTE_MAX_LAYERS],
SRSLTE_API int srslte_predecoding_single(cf_t *y,
cf_t *h,
cf_t *x,
float *csi,
int nof_symbols,
float scaling,
float noise_estimate);
@ -86,6 +87,7 @@ SRSLTE_API int srslte_predecoding_single(cf_t *y,
SRSLTE_API int srslte_predecoding_single_multi(cf_t *y[SRSLTE_MAX_PORTS],
cf_t *h[SRSLTE_MAX_PORTS],
cf_t *x,
float *csi,
int nof_rxant,
int nof_symbols,
float scaling,
@ -111,6 +113,7 @@ SRSLTE_API void srslte_predecoding_set_mimo_decoder (srslte_mimo_decoder_t _mimo
SRSLTE_API int srslte_predecoding_type(cf_t *y[SRSLTE_MAX_PORTS],
cf_t *h[SRSLTE_MAX_PORTS][SRSLTE_MAX_PORTS],
cf_t *x[SRSLTE_MAX_LAYERS],
float *csi,
int nof_rxant,
int nof_ports,
int nof_layers,

6
lib/include/srslte/phy/phch/pdsch.h
View File

@ -76,6 +76,9 @@ typedef struct SRSLTE_API {
cf_t *d[SRSLTE_MAX_CODEWORDS]; /* Modulated/Demodulated codewords */
void *e[SRSLTE_MAX_CODEWORDS];
bool csi_enabled;
float *csi[SRSLTE_MAX_CODEWORDS]; /* Channel Strengh Indicator */
/* tx & rx objects */
srslte_modem_table_t mod[4];
@ -107,6 +110,9 @@ SRSLTE_API int srslte_pdsch_set_rnti(srslte_pdsch_t *q,
SRSLTE_API void srslte_pdsch_set_power_allocation(srslte_pdsch_t *q,
float rho_a);
SRSLTE_API int srslte_pdsch_enable_csi(srslte_pdsch_t *q,
bool enable);
SRSLTE_API void srslte_pdsch_free_rnti(srslte_pdsch_t *q,
uint16_t rnti);

14
lib/include/srslte/phy/utils/simd.h
View File

@ -530,7 +530,7 @@ static inline simd_cf_t srslte_simd_cfi_loadu(const cf_t *ptr) {
0x11, 0x13, 0x15, 0x17,
0x19, 0x1B, 0x1D, 0x1F), in2);
#else /* LV_HAVE_AVX512 */
#ifdef LV_HAVE_AVX2
#ifdef LV_HAVE_AVX2
__m256 in1 = _mm256_permute_ps(_mm256_loadu_ps((float*)(ptr)), 0b11011000);
__m256 in2 = _mm256_permute_ps(_mm256_loadu_ps((float*)(ptr + 4)), 0b11011000);
ret.re = _mm256_unpacklo_ps(in1, in2);
@ -705,6 +705,18 @@ static inline void srslte_simd_cf_storeu(float *re, float *im, simd_cf_t simdreg
#endif /* LV_HAVE_AVX512 */
}
static inline simd_f_t srslte_simd_cf_re(simd_cf_t in) {
simd_f_t out = in.re;
#ifndef LV_HAVE_AVX512
#ifdef LV_HAVE_AVX2
/* Permute for AVX registers (mis SSE registers) */
const __m256i idx = _mm256_setr_epi32(0, 2, 4, 6, 1, 3, 5, 7);
out = _mm256_permutevar8x32_ps(out, idx);
#endif /* LV_HAVE_AVX2 */
#endif /* LV_HAVE_AVX512 */
return out;
}
static inline simd_cf_t srslte_simd_cf_set1 (cf_t x) {
simd_cf_t ret;
#ifdef LV_HAVE_AVX512

4
lib/src/phy/ch_estimation/test/chest_test_dl.c
View File

@ -173,7 +173,7 @@ int main(int argc, char **argv) {
gettimeofday(&t[1], NULL);
for (int j=0;j<100;j++) {
srslte_predecoding_single(input, ce, output, num_re, 1.0f, 0);
srslte_predecoding_single(input, ce, output, NULL, num_re, 1.0f, 0);
}
gettimeofday(&t[2], NULL);
get_time_interval(t);
@ -188,7 +188,7 @@ int main(int argc, char **argv) {
gettimeofday(&t[1], NULL);
for (int j=0;j<100;j++) {
srslte_predecoding_single(input, ce, output, num_re, 1.0f, srslte_chest_dl_get_noise_estimate(&est));
srslte_predecoding_single(input, ce, output, NULL, num_re, 1.0f, srslte_chest_dl_get_noise_estimate(&est));
}
gettimeofday(&t[2], NULL);
get_time_interval(t);

46
lib/src/phy/fec/softbuffer.c
View File

@ -47,32 +47,56 @@ int srslte_softbuffer_rx_init(srslte_softbuffer_rx_t *q, uint32_t nof_prb) {
int ret = SRSLTE_ERROR_INVALID_INPUTS;
if (q != NULL) {
ret = SRSLTE_ERROR;
bzero(q, sizeof(srslte_softbuffer_rx_t));
ret = srslte_ra_tbs_from_idx(26, nof_prb);
if (ret != SRSLTE_ERROR) {
q->max_cb = (uint32_t) ret / (SRSLTE_TCOD_MAX_LEN_CB - 24) + 1;
ret = SRSLTE_ERROR;
q->buffer_f = srslte_vec_malloc(sizeof(int16_t*) * q->max_cb);
if (!q->buffer_f) {
perror("malloc");
return SRSLTE_ERROR;
goto clean_exit;
}
q->data = srslte_vec_malloc(sizeof(uint8_t*) * q->max_cb);
if (!q->data) {
perror("malloc");
goto clean_exit;
}
q->cb_crc = srslte_vec_malloc(sizeof(bool) * q->max_cb);
if (!q->cb_crc) {
perror("malloc");
goto clean_exit;
}
bzero(q->cb_crc, sizeof(bool) * q->max_cb);
// FIXME: Use HARQ buffer limitation based on UE category
for (uint32_t i=0;i<q->max_cb;i++) {
q->buffer_f[i] = srslte_vec_malloc(sizeof(int16_t) * SOFTBUFFER_SIZE);
if (!q->buffer_f[i]) {
perror("malloc");
return SRSLTE_ERROR;
goto clean_exit;
}
q->data[i] = srslte_vec_malloc(sizeof(uint8_t) * 6144/8);
if (!q->data[i]) {
perror("malloc");
goto clean_exit;
}
}
//srslte_softbuffer_rx_reset(q);
ret = SRSLTE_SUCCESS;
}
}
clean_exit:
if (ret != SRSLTE_SUCCESS) {
srslte_softbuffer_rx_free(q);
}
return ret;
}
@ -86,6 +110,17 @@ void srslte_softbuffer_rx_free(srslte_softbuffer_rx_t *q) {
}
free(q->buffer_f);
}
if (q->data) {
for (uint32_t i=0;i<q->max_cb;i++) {
if (q->data[i]) {
free(q->data[i]);
}
}
free(q->data);
}
if (q->cb_crc) {
free(q->cb_crc);
}
bzero(q, sizeof(srslte_softbuffer_rx_t));
}
}
@ -110,6 +145,9 @@ void srslte_softbuffer_rx_reset_cb(srslte_softbuffer_rx_t *q, uint32_t nof_cb) {
}
}
}
if (q->cb_crc) {
bzero(q->cb_crc, sizeof(bool) * q->max_cb);
}
}

58
lib/src/phy/mimo/precoding.c
View File

@ -34,6 +34,7 @@
#include "srslte/phy/utils/vector.h"
#include "srslte/phy/utils/debug.h"
#include "srslte/phy/utils/mat.h"
#include "srslte/phy/utils/simd.h"
#ifdef LV_HAVE_SSE
#include <immintrin.h>
@ -252,8 +253,49 @@ int srslte_predecoding_single_gen(cf_t *y[SRSLTE_MAX_PORTS], cf_t *h[SRSLTE_MAX_
return nof_symbols;
}
int srslte_predecoding_single_csi(cf_t *y[SRSLTE_MAX_PORTS], cf_t *h[SRSLTE_MAX_PORTS], cf_t *x, float *csi, int nof_rxant, int nof_symbols, float scaling, float noise_estimate) {
int i = 0;
#if SRSLTE_SIMD_CF_SIZE
const simd_f_t _noise = srslte_simd_f_set1(noise_estimate);
const simd_f_t _scaling = srslte_simd_f_set1(1.0f / scaling);
for (; i < nof_symbols - SRSLTE_SIMD_CF_SIZE + 1; i += SRSLTE_SIMD_CF_SIZE) {
simd_cf_t _r = srslte_simd_cf_zero();
simd_f_t _hh = srslte_simd_f_zero();
for (int p = 0; p < nof_rxant; p++) {
simd_cf_t _y = srslte_simd_cfi_load(&y[p][i]);
simd_cf_t _h = srslte_simd_cfi_load(&h[p][i]);
_r = srslte_simd_cf_add(_r, srslte_simd_cf_conjprod(_y, _h));
_hh = srslte_simd_f_add(_hh, srslte_simd_cf_re(srslte_simd_cf_conjprod(_h, _h)));
}
simd_f_t _csi = srslte_simd_f_add(_hh, _noise);
simd_cf_t _x = srslte_simd_cf_mul(srslte_simd_cf_mul(_r, _scaling), srslte_simd_f_rcp(_csi));
srslte_simd_f_store(&csi[i], _csi);
srslte_simd_cfi_store(&x[i], _x);
}
#endif
for (; i < nof_symbols; i++) {
cf_t r = 0;
float hh = 0;
float _scaling = 1.0f / scaling;
for (int p = 0; p < nof_rxant; p++) {
r += y[p][i] * conj(h[p][i]);
hh += (__real__ h[p][i] * __real__ h[p][i]) + (__imag__ h[p][i] * __imag__ h[p][i]);
}
csi[i] = hh + noise_estimate;
x[i] = r * _scaling / csi[i];
}
return nof_symbols;
}
/* ZF/MMSE SISO equalizer x=y(h'h+no)^(-1)h' (ZF if n0=0.0)*/
int srslte_predecoding_single(cf_t *y_, cf_t *h_, cf_t *x, int nof_symbols, float scaling, float noise_estimate) {
int srslte_predecoding_single(cf_t *y_, cf_t *h_, cf_t *x, float *csi, int nof_symbols, float scaling, float noise_estimate) {
cf_t *y[SRSLTE_MAX_PORTS];
cf_t *h[SRSLTE_MAX_PORTS];
@ -261,6 +303,10 @@ int srslte_predecoding_single(cf_t *y_, cf_t *h_, cf_t *x, int nof_symbols, floa
h[0] = h_;
int nof_rxant = 1;
if (csi) {
return srslte_predecoding_single_csi(y, h, x, csi, nof_rxant, nof_symbols, scaling, noise_estimate);
}
#ifdef LV_HAVE_AVX
if (nof_symbols > 32 && nof_rxant <= 2) {
return srslte_predecoding_single_avx(y, h, x, nof_rxant, nof_symbols, scaling, noise_estimate);
@ -281,8 +327,12 @@ int srslte_predecoding_single(cf_t *y_, cf_t *h_, cf_t *x, int nof_symbols, floa
}
/* ZF/MMSE SISO equalizer x=y(h'h+no)^(-1)h' (ZF if n0=0.0)*/
int srslte_predecoding_single_multi(cf_t *y[SRSLTE_MAX_PORTS], cf_t *h[SRSLTE_MAX_PORTS], cf_t *x,
int srslte_predecoding_single_multi(cf_t *y[SRSLTE_MAX_PORTS], cf_t *h[SRSLTE_MAX_PORTS], cf_t *x, float *csi,
int nof_rxant, int nof_symbols, float scaling, float noise_estimate) {
if (csi) {
return srslte_predecoding_single_csi(y, h, x, csi, nof_rxant, nof_symbols, scaling, noise_estimate);
}
#ifdef LV_HAVE_AVX
if (nof_symbols > 32) {
return srslte_predecoding_single_avx(y, h, x, nof_rxant, nof_symbols, scaling, noise_estimate);
@ -1418,7 +1468,7 @@ void srslte_predecoding_set_mimo_decoder (srslte_mimo_decoder_t _mimo_decoder) {
/* 36.211 v10.3.0 Section 6.3.4 */
int srslte_predecoding_type(cf_t *y[SRSLTE_MAX_PORTS], cf_t *h[SRSLTE_MAX_PORTS][SRSLTE_MAX_PORTS],
cf_t *x[SRSLTE_MAX_LAYERS], int nof_rxant, int nof_ports, int nof_layers,
cf_t *x[SRSLTE_MAX_LAYERS], float *csi, int nof_rxant, int nof_ports, int nof_layers,
int codebook_idx, int nof_symbols, srslte_mimo_type_t type, float scaling,
float noise_estimate) {
@ -1451,7 +1501,7 @@ int srslte_predecoding_type(cf_t *y[SRSLTE_MAX_PORTS], cf_t *h[SRSLTE_MAX_PORTS]
return -1;
case SRSLTE_MIMO_TYPE_SINGLE_ANTENNA:
if (nof_ports == 1 && nof_layers == 1) {
return srslte_predecoding_single_multi(y, h[0], x[0], nof_rxant, nof_symbols, scaling, noise_estimate);
return srslte_predecoding_single_multi(y, h[0], x[0], csi, nof_rxant, nof_symbols, scaling, noise_estimate);
} else {
fprintf(stderr,
"Number of ports and layers must be 1 for transmission on single antenna ports (%d, %d)\n", nof_ports, nof_layers);

2
lib/src/phy/mimo/test/precoder_test.c
View File

@ -291,7 +291,7 @@ int main(int argc, char **argv) {
/* predecoding / equalization */
struct timeval t[3];
gettimeofday(&t[1], NULL);
srslte_predecoding_type(r, h, xr, nof_rx_ports, nof_tx_ports, nof_layers,
srslte_predecoding_type(r, h, xr, NULL, nof_rx_ports, nof_tx_ports, nof_layers,
codebook_idx, nof_re, type, scaling, powf(10, -snr_db / 10));
gettimeofday(&t[2], NULL);
get_time_interval(t);

2
lib/src/phy/phch/pbch.c
View File

@ -497,7 +497,7 @@ int srslte_pbch_decode(srslte_pbch_t *q, cf_t *slot1_symbols, cf_t *ce_slot1[SRS
/* in control channels, only diversity is supported */
if (nant == 1) {
/* no need for layer demapping */
srslte_predecoding_single(q->symbols[0], q->ce[0], q->d, q->nof_symbols, 1.0f, noise_estimate);
srslte_predecoding_single(q->symbols[0], q->ce[0], q->d, NULL, q->nof_symbols, 1.0f, noise_estimate);
} else {
srslte_predecoding_diversity(q->symbols[0], q->ce, x, nant,
q->nof_symbols, 1.0f);

2
lib/src/phy/phch/pcfich.c
View File

@ -219,7 +219,7 @@ int srslte_pcfich_decode_multi(srslte_pcfich_t *q, cf_t *sf_symbols[SRSLTE_MAX_P
/* in control channels, only diversity is supported */
if (q->cell.nof_ports == 1) {
/* no need for layer demapping */
srslte_predecoding_single_multi(q_symbols, q_ce[0], q->d, q->nof_rx_antennas, q->nof_symbols, 1.0f, noise_estimate);
srslte_predecoding_single_multi(q_symbols, q_ce[0], q->d, NULL, q->nof_rx_antennas, q->nof_symbols, 1.0f, noise_estimate);
} else {
srslte_predecoding_diversity_multi(q_symbols, q_ce, x, q->nof_rx_antennas, q->cell.nof_ports, q->nof_symbols, 1.0f);
srslte_layerdemap_diversity(x, q->d, q->cell.nof_ports, q->nof_symbols / q->cell.nof_ports);

2
lib/src/phy/phch/pdcch.c
View File

@ -490,7 +490,7 @@ int srslte_pdcch_extract_llr_multi(srslte_pdcch_t *q, cf_t *sf_symbols[SRSLTE_MA
/* in control channels, only diversity is supported */
if (q->cell.nof_ports == 1) {
/* no need for layer demapping */
srslte_predecoding_single_multi(q->symbols, q->ce[0], q->d, q->nof_rx_antennas, nof_symbols, 1.0f, noise_estimate/2);
srslte_predecoding_single_multi(q->symbols, q->ce[0], q->d, NULL, q->nof_rx_antennas, nof_symbols, 1.0f, noise_estimate/2);
} else {
srslte_predecoding_diversity_multi(q->symbols, q->ce, x, q->nof_rx_antennas, q->cell.nof_ports, nof_symbols, 1.0f);
srslte_layerdemap_diversity(x, q->d, q->cell.nof_ports, nof_symbols / q->cell.nof_ports);

57
lib/src/phy/phch/pdsch.c
View File

@ -294,6 +294,10 @@ void srslte_pdsch_free(srslte_pdsch_t *q) {
if (q->d[i]) {
free(q->d[i]);
}
if (q->csi[i]) {
free(q->csi[i]);
}
}
/* Free sch objects */
@ -394,6 +398,22 @@ void srslte_pdsch_set_power_allocation(srslte_pdsch_t *q, float rho_a) {
}
}
int srslte_pdsch_enable_csi(srslte_pdsch_t *q, bool enable) {
if (enable) {
for (int i = 0; i < SRSLTE_MAX_CODEWORDS; i++) {
if (!q->csi[i]) {
q->csi[i] = srslte_vec_malloc(sizeof(float) * q->max_re);
if (!q->csi[i]) {
return SRSLTE_ERROR;
}
}
}
}
q->csi_enabled = enable;
return SRSLTE_SUCCESS;
}
void srslte_pdsch_free_rnti(srslte_pdsch_t* q, uint16_t rnti)
{
uint32_t rnti_idx = q->is_ue?0:rnti;
@ -617,6 +637,41 @@ static int srslte_pdsch_codeword_decode(srslte_pdsch_t *q, srslte_pdsch_cfg_t *c
/* Bit scrambling */
srslte_scrambling_s_offset(seq, q->e[codeword_idx], 0, nbits->nof_bits);
uint32_t qm = nbits->nof_bits/nbits->nof_re;
switch(cfg->grant.mcs[tb_idx].mod) {
case SRSLTE_MOD_BPSK:
qm = 1;
break;
case SRSLTE_MOD_QPSK:
qm = 2;
break;
case SRSLTE_MOD_16QAM:
qm = 4;
break;
case SRSLTE_MOD_64QAM:
qm = 6;
break;
default:
ERROR("No modulation");
}
int16_t *e = q->e[codeword_idx];
if (q->csi_enabled) {
const uint32_t csi_max_idx = srslte_vec_max_fi(q->csi[codeword_idx], nbits->nof_bits / qm);
float csi_max = 1.0f;
if (csi_max_idx < nbits->nof_bits / qm) {
csi_max = q->csi[codeword_idx][csi_max_idx];
}
for (int i = 0; i < nbits->nof_bits / qm; i++) {
const float csi = q->csi[codeword_idx][i] / csi_max;
for (int k = 0; k < qm; k++) {
e[qm * i + k] = (int16_t) ((float) e[qm * i + k] * csi);
}
}
}
/* Return */
ret = srslte_dlsch_decode2(&q->dl_sch, cfg, softbuffer, q->e[codeword_idx], data, tb_idx);
@ -702,7 +757,7 @@ int srslte_pdsch_decode(srslte_pdsch_t *q,
}
// Pre-decoder
if (srslte_predecoding_type(q->symbols, q->ce, x, q->nof_rx_antennas, q->cell.nof_ports, cfg->nof_layers,
if (srslte_predecoding_type(q->symbols, q->ce, x, q->csi[0], q->nof_rx_antennas, q->cell.nof_ports, cfg->nof_layers,
cfg->codebook_idx, cfg->nbits[0].nof_re, cfg->mimo_type, pdsch_scaling, noise_estimate)<0) {
DEBUG("Error predecoding\n");
return SRSLTE_ERROR;

2
lib/src/phy/phch/phich.c
View File

@ -239,7 +239,7 @@ int srslte_phich_decode(srslte_phich_t *q, cf_t *sf_symbols[SRSLTE_MAX_PORTS],
/* in control channels, only diversity is supported */
if (q->cell.nof_ports == 1) {
/* no need for layer demapping */
srslte_predecoding_single_multi(q_sf_symbols, q_ce[0], q->d0, q->nof_rx_antennas, SRSLTE_PHICH_MAX_NSYMB, 1.0f, noise_estimate);
srslte_predecoding_single_multi(q_sf_symbols, q_ce[0], q->d0, NULL, q->nof_rx_antennas, SRSLTE_PHICH_MAX_NSYMB, 1.0f, noise_estimate);
} else {
srslte_predecoding_diversity_multi(q_sf_symbols, q_ce, x, q->nof_rx_antennas, q->cell.nof_ports, SRSLTE_PHICH_MAX_NSYMB, 1.0f);
srslte_layerdemap_diversity(x, q->d0, q->cell.nof_ports, SRSLTE_PHICH_MAX_NSYMB / q->cell.nof_ports);

2
lib/src/phy/phch/pmch.c
View File

@ -377,7 +377,7 @@ int srslte_pmch_decode_multi(srslte_pmch_t *q,
}
// No tx diversity in MBSFN
srslte_predecoding_single_multi(q->symbols, q->ce[0], q->d, q->nof_rx_antennas, cfg->nbits[0].nof_re, 1.0f, noise_estimate);
srslte_predecoding_single_multi(q->symbols, q->ce[0], q->d, NULL, q->nof_rx_antennas, cfg->nbits[0].nof_re, 1.0f, noise_estimate);
if (SRSLTE_VERBOSE_ISDEBUG()) {
DEBUG("SAVED FILE subframe.dat: received subframe symbols\n");

2
lib/src/phy/phch/pucch.c
View File

@ -787,7 +787,7 @@ int srslte_pucch_decode(srslte_pucch_t* q, srslte_pucch_format_t format,
}
// Equalization
srslte_predecoding_single(q->z_tmp, q->ce, q->z, nof_re, 1.0f, noise_estimate);
srslte_predecoding_single(q->z_tmp, q->ce, q->z, NULL, nof_re, 1.0f, noise_estimate);
// Perform ML-decoding
float corr=0, corr_max=-1e9;

2
lib/src/phy/phch/pusch.c
View File

@ -596,7 +596,7 @@ int srslte_pusch_decode(srslte_pusch_t *q,
}
// Equalization
srslte_predecoding_single(q->d, q->ce, q->z, cfg->nbits.nof_re, 1.0f, noise_estimate);
srslte_predecoding_single(q->d, q->ce, q->z, NULL, cfg->nbits.nof_re, 1.0f, noise_estimate);
// DFT predecoding
srslte_dft_precoding(&q->dft_precoding, q->z, q->d, cfg->grant.L_prb, cfg->nbits.nof_symb);

31
lib/src/phy/phch/sch.c
View File

@ -336,14 +336,17 @@ bool decode_tb_cb(srslte_sch_t *q,
decoder_input[i] = NULL;
}
uint32_t remaining_cb = 0;
for (int i=0;i<nof_cb;i++) {
cb_map[i] = false;
/* Do not process blocks with CRC Ok */
cb_map[i] = softbuffer->cb_crc[i];
if (softbuffer->cb_crc[i] == false) {
remaining_cb ++;
}
}
srslte_tdec_reset(&q->decoder, cb_len);
uint32_t remaining_cb = nof_cb;
q->nof_iterations = 0;
while(remaining_cb>0) {
@ -401,7 +404,8 @@ bool decode_tb_cb(srslte_sch_t *q,
// CRC is OK
if (!srslte_crc_checksum_byte(crc_ptr, q->cb_in, len_crc)) {
memcpy(&data[(cb_idx[i]*rlen)/8], q->cb_in, rlen/8 * sizeof(uint8_t));
memcpy(softbuffer->data[cb_idx[i]], q->cb_in, rlen/8 * sizeof(uint8_t));
softbuffer->cb_crc[cb_idx[i]] = true;
q->nof_iterations += srslte_tdec_get_nof_iterations_cb(&q->decoder, i);
@ -418,15 +422,28 @@ bool decode_tb_cb(srslte_sch_t *q,
cb_idx[i], remaining_cb, i, first_cb, nof_cb);
q->nof_iterations += q->max_iterations;
q->nof_iterations /= (nof_cb-remaining_cb+1);
return false;
srslte_tdec_reset_cb(&q->decoder, i);
remaining_cb--;
decoder_input[i] = NULL;
cb_idx[i] = 0;
}
}
}
}
softbuffer->tb_crc = true;
for (int i = 0; i < nof_cb && softbuffer->tb_crc; i++) {
/* If one CB failed return false */
softbuffer->tb_crc = softbuffer->cb_crc[i];
}
if (softbuffer->tb_crc) {
for (int i = 0; i < nof_cb; i++) {
memcpy(&data[i * rlen / 8], softbuffer->data[i], rlen/8 * sizeof(uint8_t));
}
}
q->nof_iterations /= nof_cb;
return true;
return softbuffer->tb_crc;
}
/**

3
srsue/src/main.cc
View File

@ -270,6 +270,9 @@ void parse_args(all_args_t *args, int argc, char *argv[]) {
bpo::value<float>(&args->expert.phy.estimator_fil_w)->default_value(0.1),
"Chooses the coefficients for the 3-tap channel estimator centered filter.")
("expert.pdsch_csi_enabled",
bpo::value<bool>(&args->expert.phy.pdsch_csi_enabled)->default_value(false),
"Stores the Channel State Information and uses it for weightening the softbits. It is only compatible with TM1.")
("rf_calibration.tx_corr_dc_gain", bpo::value<float>(&args->rf_cal.tx_corr_dc_gain)->default_value(0.0),
"TX DC offset gain correction")

1
srsue/src/phy/phch_worker.cc
View File

@ -137,6 +137,7 @@ bool phch_worker::init(uint32_t max_prb, srslte::log *log_h, srslte::log *log_ph
srslte_chest_dl_cfo_estimate_enable(&ue_dl.chest, phy->args->cfo_ref_mask!=0, phy->args->cfo_ref_mask);
srslte_ue_ul_set_normalization(&ue_ul, true);
srslte_ue_ul_set_cfo_enable(&ue_ul, true);
srslte_pdsch_enable_csi(&ue_dl.pdsch, phy->args->pdsch_csi_enabled);
mem_initiated = true;

4
srsue/ue.conf.example
View File

@ -182,6 +182,9 @@ enable = false
# cfo_loop_pss_timeout: After the PSS estimation is below cfo_loop_pss_tol for cfo_loop_pss_timeout times consecutively,
# RS adjustments are allowed.
#
# pdsch_csi_enabled: Stores the Channel State Information and uses it for weightening the softbits. It is only
# compatible with TM1. It is False by default.
#
#####################################################################
[expert]
#ip_netmask = 255.255.255.0
@ -205,6 +208,7 @@ enable = false
#pregenerate_signals = false
#metrics_csv_enable = false
#metrics_csv_filename = /tmp/ue_metrics.csv
#pdsch_csi_enabled = true # Caution! Only TM1 supported!
# CFO related values
#cfo_integer_enabled = false