mirror of https://github.com/PentHertz/srsLTE.git
Added DRMS for UL. Changed chest to chest_dl
This commit is contained in:
parent
1cbbbe9b9a
commit
45179ea823
|
@ -76,21 +76,6 @@ LIBLTE_API void chest_free(chest_t *q);
|
|||
LIBLTE_API int chest_set_nof_ports(chest_t *q,
|
||||
uint32_t nof_ports);
|
||||
|
||||
LIBLTE_API int chest_init_LTEDL(chest_t *q,
|
||||
lte_cell_t cell);
|
||||
|
||||
LIBLTE_API int chest_ref_LTEDL_slot_port(chest_t *q,
|
||||
uint32_t nslot,
|
||||
uint32_t port_id,
|
||||
lte_cell_t cell);
|
||||
|
||||
LIBLTE_API int chest_ref_LTEDL_slot(chest_t *q,
|
||||
uint32_t nslot,
|
||||
lte_cell_t cell);
|
||||
|
||||
LIBLTE_API int chest_ref_LTEDL(chest_t *q,
|
||||
lte_cell_t cell);
|
||||
|
||||
LIBLTE_API int chest_ce_ref(chest_t *q,
|
||||
cf_t *input,
|
||||
uint32_t nslot,
|
||||
|
@ -139,11 +124,51 @@ LIBLTE_API void chest_ce_fprint(chest_t *q,
|
|||
uint32_t nslot,
|
||||
uint32_t port_id);
|
||||
|
||||
LIBLTE_API int chest_ref_symbols(chest_t *q,
|
||||
LIBLTE_API int chest_ref_get_symbols(chest_t *q,
|
||||
uint32_t port_id,
|
||||
uint32_t nslot,
|
||||
uint32_t l[2]);
|
||||
|
||||
|
||||
|
||||
|
||||
/*********************************************************
|
||||
*
|
||||
* Downlink Channel Estimator
|
||||
*
|
||||
*********************************************************/
|
||||
LIBLTE_API int chest_init_LTEDL(chest_t *q,
|
||||
lte_cell_t cell);
|
||||
|
||||
LIBLTE_API int chest_ref_set_LTEDL_slot_port(chest_t *q,
|
||||
uint32_t nslot,
|
||||
uint32_t port_id,
|
||||
lte_cell_t cell);
|
||||
|
||||
LIBLTE_API int chest_ref_set_LTEDL_slot(chest_t *q,
|
||||
uint32_t nslot,
|
||||
lte_cell_t cell);
|
||||
|
||||
LIBLTE_API int chest_ref_set_LTEDL(chest_t *q,
|
||||
lte_cell_t cell);
|
||||
|
||||
|
||||
/*********************************************************
|
||||
*
|
||||
* Uplink Channel Estimator
|
||||
*
|
||||
*********************************************************/
|
||||
LIBLTE_API int chest_init_LTEUL(chest_t *q,
|
||||
lte_cell_t cell);
|
||||
|
||||
LIBLTE_API int chest_ref_set_LTEUL_slot(chest_t *q,
|
||||
uint32_t nslot,
|
||||
lte_cell_t cell);
|
||||
|
||||
LIBLTE_API int chest_ref_set_LTEUL(chest_t *q,
|
||||
lte_cell_t cell);
|
||||
|
||||
|
||||
/* High-level API */
|
||||
|
||||
/** TODO: The high-level API has N interfaces, one for each port */
|
||||
|
|
|
@ -59,11 +59,31 @@ typedef struct LIBLTE_API{
|
|||
cf_t *ch_est;
|
||||
} refsignal_t;
|
||||
|
||||
|
||||
typedef struct LIBLTE_API {
|
||||
float beta; // amplitude scaling
|
||||
uint32_t delta_ss; // Set to 0 for PUCCH
|
||||
uint32_t cyclic_shift;
|
||||
uint32_t cyclic_shift_for_drms; /* From DCI 0. Set to 0 if no PDCCH with DCI 0 for the same TB
|
||||
or if the initial PUSCH is semi-persisently scheduled or
|
||||
if the initial PUSCH is scheduled by the RA response grant */
|
||||
bool group_hopping_en;
|
||||
bool sequence_hopping_en;
|
||||
} refsignal_ul_cfg_t;
|
||||
|
||||
|
||||
LIBLTE_API int refsignal_init_LTEDL(refsignal_t *q,
|
||||
uint32_t port_id,
|
||||
uint32_t nslot,
|
||||
lte_cell_t cell);
|
||||
|
||||
LIBLTE_API int refsignal_init_LTEUL_drms_pusch(refsignal_t *q,
|
||||
uint32_t nof_prb,
|
||||
uint32_t prb_start,
|
||||
uint32_t nslot,
|
||||
lte_cell_t cell,
|
||||
refsignal_ul_cfg_t *drms_cfg);
|
||||
|
||||
LIBLTE_API void refsignal_free(refsignal_t *q);
|
||||
|
||||
LIBLTE_API int refsignal_put(refsignal_t *q,
|
||||
|
|
|
@ -40,7 +40,7 @@ LIBLTE_API int sequence_init(sequence_t *q, uint32_t len);
|
|||
|
||||
LIBLTE_API void sequence_free(sequence_t *q);
|
||||
|
||||
LIBLTE_API int sequence_LTEPRS(sequence_t *q,
|
||||
LIBLTE_API int sequence_LTE_pr(sequence_t *q,
|
||||
uint32_t len,
|
||||
uint32_t seed);
|
||||
|
||||
|
|
|
@ -259,17 +259,58 @@ int chest_init(chest_t *q, uint32_t nof_re, uint32_t nof_symbols, uint32_t nof_p
|
|||
return ret;
|
||||
}
|
||||
|
||||
void chest_free(chest_t *q) {
|
||||
int p, n;
|
||||
for (p=0;p<q->nof_ports;p++) {
|
||||
for (n=0;n<NSLOTS_X_FRAME;n++) {
|
||||
refsignal_free(&q->refsignal[p][n]);
|
||||
}
|
||||
}
|
||||
#ifdef VOLK_INTERP
|
||||
for (p=0;p<MAX_PORTS;p++) {
|
||||
interp_free(&q->interp_freq[p]);
|
||||
interp_free(&q->interp_time[p]);
|
||||
}
|
||||
#endif
|
||||
bzero(q, sizeof(chest_t));
|
||||
}
|
||||
|
||||
/* Fills l[2] with the symbols in the slot nslot that contain references.
|
||||
* returns the number of symbols with references (in the slot)
|
||||
*/
|
||||
int chest_ref_get_symbols(chest_t *q, uint32_t port_id, uint32_t nslot, uint32_t l[2]) {
|
||||
|
||||
if (q != NULL &&
|
||||
port_id < MAX_PORTS &&
|
||||
nslot < NSLOTS_X_FRAME)
|
||||
{
|
||||
memcpy(l, q->refsignal[port_id][nslot].symbols_ref, sizeof(uint32_t) * q->refsignal[port_id][nslot].nsymbols);
|
||||
return q->refsignal[port_id][nslot].nsymbols;
|
||||
} else {
|
||||
return LIBLTE_ERROR_INVALID_INPUTS;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
/*********************************************************************
|
||||
*
|
||||
* Downlink Channel estimator
|
||||
*
|
||||
*********************************************************************/
|
||||
int chest_init_LTEDL(chest_t *q, lte_cell_t cell) {
|
||||
int ret;
|
||||
ret = chest_init(q, cell.nof_prb * RE_X_RB, CP_NSYMB(cell.cp), cell.nof_ports);
|
||||
if (ret != LIBLTE_SUCCESS) {
|
||||
return ret;
|
||||
} else {
|
||||
return chest_ref_LTEDL(q, cell);
|
||||
return chest_ref_set_LTEDL(q, cell);
|
||||
}
|
||||
}
|
||||
|
||||
int chest_ref_LTEDL_slot_port(chest_t *q, uint32_t nslot, uint32_t port_id, lte_cell_t cell) {
|
||||
int chest_ref_set_LTEDL_slot_port(chest_t *q, uint32_t nslot, uint32_t port_id, lte_cell_t cell) {
|
||||
int ret = LIBLTE_ERROR_INVALID_INPUTS;
|
||||
|
||||
if (q != NULL &&
|
||||
|
@ -293,10 +334,10 @@ int chest_ref_LTEDL_slot_port(chest_t *q, uint32_t nslot, uint32_t port_id, lte_
|
|||
return ret;
|
||||
}
|
||||
|
||||
int chest_ref_LTEDL_slot(chest_t *q, uint32_t nslot, lte_cell_t cell) {
|
||||
int chest_ref_set_LTEDL_slot(chest_t *q, uint32_t nslot, lte_cell_t cell) {
|
||||
int p, ret;
|
||||
for (p=0;p<q->nof_ports;p++) {
|
||||
ret = chest_ref_LTEDL_slot_port(q, nslot, p, cell);
|
||||
ret = chest_ref_set_LTEDL_slot_port(q, nslot, p, cell);
|
||||
if (ret != LIBLTE_SUCCESS) {
|
||||
return ret;
|
||||
}
|
||||
|
@ -304,10 +345,10 @@ int chest_ref_LTEDL_slot(chest_t *q, uint32_t nslot, lte_cell_t cell) {
|
|||
return LIBLTE_SUCCESS;
|
||||
}
|
||||
|
||||
int chest_ref_LTEDL(chest_t *q, lte_cell_t cell) {
|
||||
int chest_ref_set_LTEDL(chest_t *q, lte_cell_t cell) {
|
||||
int n, ret;
|
||||
for (n=0;n<NSLOTS_X_FRAME;n++) {
|
||||
ret = chest_ref_LTEDL_slot(q, n, cell);
|
||||
ret = chest_ref_set_LTEDL_slot(q, n, cell);
|
||||
if (ret != LIBLTE_SUCCESS) {
|
||||
return ret;
|
||||
}
|
||||
|
@ -315,37 +356,32 @@ int chest_ref_LTEDL(chest_t *q, lte_cell_t cell) {
|
|||
return LIBLTE_SUCCESS;
|
||||
}
|
||||
|
||||
void chest_free(chest_t *q) {
|
||||
int p, n;
|
||||
for (p=0;p<q->nof_ports;p++) {
|
||||
for (n=0;n<NSLOTS_X_FRAME;n++) {
|
||||
refsignal_free(&q->refsignal[p][n]);
|
||||
}
|
||||
}
|
||||
#ifdef VOLK_INTERP
|
||||
for (p=0;p<MAX_PORTS;p++) {
|
||||
interp_free(&q->interp_freq[p]);
|
||||
interp_free(&q->interp_time[p]);
|
||||
}
|
||||
#endif
|
||||
bzero(q, sizeof(chest_t));
|
||||
}
|
||||
|
||||
/* Fills l[2] with the symbols in the slot nslot that contain references.
|
||||
* returns the number of symbols with references (in the slot)
|
||||
*/
|
||||
int chest_ref_symbols(chest_t *q, uint32_t port_id, uint32_t nslot, uint32_t l[2]) {
|
||||
|
||||
if (q != NULL &&
|
||||
port_id < MAX_PORTS &&
|
||||
nslot < NSLOTS_X_FRAME)
|
||||
{
|
||||
memcpy(l, q->refsignal[port_id][nslot].symbols_ref, sizeof(uint32_t) * q->refsignal[port_id][nslot].nsymbols);
|
||||
return q->refsignal[port_id][nslot].nsymbols;
|
||||
} else {
|
||||
return LIBLTE_ERROR_INVALID_INPUTS;
|
||||
}
|
||||
}
|
||||
|
||||
/*********************************************************************
|
||||
*
|
||||
* TODO: Uplink Channel estimator
|
||||
*
|
||||
*
|
||||
*********************************************************************/
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
/** High-level API
|
||||
|
|
|
@ -38,46 +38,49 @@
|
|||
#include "liblte/phy/utils/debug.h"
|
||||
#include "liblte/phy/common/sequence.h"
|
||||
|
||||
#include "ul_rs_tables.h"
|
||||
|
||||
#define idx(x, y) (l*nof_refs_x_symbol+i)
|
||||
|
||||
int refsignal_v(uint32_t port_id, uint32_t ns, uint32_t symbol_id) {
|
||||
int v=-1;
|
||||
switch(port_id) {
|
||||
int refsignal_v(uint32_t port_id, uint32_t ns, uint32_t symbol_id)
|
||||
{
|
||||
int v = -1;
|
||||
switch (port_id) {
|
||||
case 0:
|
||||
if (symbol_id == 0) {
|
||||
v=0;
|
||||
v = 0;
|
||||
} else {
|
||||
v=3;
|
||||
v = 3;
|
||||
}
|
||||
break;
|
||||
case 1:
|
||||
if (symbol_id == 0) {
|
||||
v=3;
|
||||
v = 3;
|
||||
} else {
|
||||
v=0;
|
||||
v = 0;
|
||||
}
|
||||
break;
|
||||
case 2:
|
||||
v=3*(ns%2);
|
||||
v = 3 * (ns % 2);
|
||||
break;
|
||||
case 3:
|
||||
v=3+3*(ns%2);
|
||||
v = 3 + 3 * (ns % 2);
|
||||
break;
|
||||
}
|
||||
return v;
|
||||
}
|
||||
|
||||
uint32_t refsignal_k(uint32_t m, uint32_t v, uint32_t cell_id) {
|
||||
return 6*m+((v+(cell_id%6))%6);
|
||||
uint32_t refsignal_k(uint32_t m, uint32_t v, uint32_t cell_id)
|
||||
{
|
||||
return 6 * m + ((v + (cell_id % 6)) % 6);
|
||||
}
|
||||
|
||||
int refsignal_put(refsignal_t *q, cf_t *slot_symbols) {
|
||||
int refsignal_put(refsignal_t * q, cf_t * slot_symbols)
|
||||
{
|
||||
uint32_t i;
|
||||
uint32_t fidx, tidx;
|
||||
if (q != NULL &&
|
||||
slot_symbols != NULL)
|
||||
{
|
||||
for (i=0;i<q->nof_refs;i++) {
|
||||
if (q != NULL && slot_symbols != NULL) {
|
||||
for (i = 0; i < q->nof_refs; i++) {
|
||||
fidx = q->refs[i].freq_idx; // reference frequency index
|
||||
tidx = q->refs[i].time_idx; // reference time index
|
||||
slot_symbols[SAMPLE_IDX(q->nof_prb, tidx, fidx)] = q->refs[i].simbol;
|
||||
|
@ -91,8 +94,9 @@ int refsignal_put(refsignal_t *q, cf_t *slot_symbols) {
|
|||
/** Initializes refsignal_t object according to 3GPP 36.211 6.10.1
|
||||
*
|
||||
*/
|
||||
int refsignal_init_LTEDL(refsignal_t *q, uint32_t port_id, uint32_t nslot,
|
||||
lte_cell_t cell) {
|
||||
int refsignal_init_LTEDL(refsignal_t * q, uint32_t port_id, uint32_t nslot,
|
||||
lte_cell_t cell)
|
||||
{
|
||||
|
||||
uint32_t c_init;
|
||||
uint32_t ns, l, lp[2];
|
||||
|
@ -106,9 +110,7 @@ int refsignal_init_LTEDL(refsignal_t *q, uint32_t port_id, uint32_t nslot,
|
|||
|
||||
if (q != NULL &&
|
||||
port_id < MAX_PORTS &&
|
||||
nslot < NSLOTS_X_FRAME &&
|
||||
lte_cell_isvalid(&cell))
|
||||
{
|
||||
nslot < NSLOTS_X_FRAME && lte_cell_isvalid(&cell)) {
|
||||
|
||||
bzero(q, sizeof(refsignal_t));
|
||||
bzero(&seq, sizeof(sequence_t));
|
||||
|
@ -131,7 +133,7 @@ int refsignal_init_LTEDL(refsignal_t *q, uint32_t port_id, uint32_t nslot,
|
|||
|
||||
q->nof_refs = nof_refs_x_symbol * nof_ref_symbols;
|
||||
q->nsymbols = nof_ref_symbols;
|
||||
q->voffset = cell.id%6;
|
||||
q->voffset = cell.id % 6;
|
||||
q->nof_prb = cell.nof_prb;
|
||||
|
||||
q->symbols_ref = malloc(sizeof(uint32_t) * nof_ref_symbols);
|
||||
|
@ -156,7 +158,7 @@ int refsignal_init_LTEDL(refsignal_t *q, uint32_t port_id, uint32_t nslot,
|
|||
|
||||
c_init = 1024 * (7 * (ns + 1) + lp[l] + 1) * (2 * cell.id + 1)
|
||||
+ 2 * cell.id + N_cp;
|
||||
ret = sequence_LTEPRS(&seq, 2 * 2 * MAX_PRB, c_init);
|
||||
ret = sequence_LTE_pr(&seq, 2 * 2 * MAX_PRB, c_init);
|
||||
if (ret != LIBLTE_SUCCESS) {
|
||||
goto free_and_exit;
|
||||
}
|
||||
|
@ -167,12 +169,14 @@ int refsignal_init_LTEDL(refsignal_t *q, uint32_t port_id, uint32_t nslot,
|
|||
mp = i + MAX_PRB - cell.nof_prb;
|
||||
|
||||
/* generate signal */
|
||||
__real__ q->refs[idx(l,i)].simbol = (1 - 2 * (float) seq.c[2 * mp]) / sqrt(2);
|
||||
__imag__ q->refs[idx(l,i)].simbol = (1 - 2 * (float) seq.c[2 * mp + 1]) / sqrt(2);
|
||||
__real__ q->refs[idx(l, i)].simbol =
|
||||
(1 - 2 * (float) seq.c[2 * mp]) / sqrt(2);
|
||||
__imag__ q->refs[idx(l, i)].simbol =
|
||||
(1 - 2 * (float) seq.c[2 * mp + 1]) / sqrt(2);
|
||||
|
||||
/* mapping to resource elements */
|
||||
q->refs[idx(l,i)].freq_idx = refsignal_k(i, (uint32_t) v, cell.id);
|
||||
q->refs[idx(l,i)].time_idx = lp[l];
|
||||
q->refs[idx(l, i)].freq_idx = refsignal_k(i, (uint32_t) v, cell.id);
|
||||
q->refs[idx(l, i)].time_idx = lp[l];
|
||||
}
|
||||
}
|
||||
ret = LIBLTE_SUCCESS;
|
||||
|
@ -187,7 +191,179 @@ free_and_exit:
|
|||
return ret;
|
||||
}
|
||||
|
||||
void refsignal_free(refsignal_t *q) {
|
||||
// n_drms_2 table 5.5.2.1.1-1 from 36.211
|
||||
uint32_t n_drms_2[8] = { 0, 6, 3, 4, 2, 8, 10, 9 };
|
||||
|
||||
// n_drms_1 table 5.5.2.1.1-2 from 36.211
|
||||
uint32_t n_drms_1[8] = { 0, 2, 3, 4, 6, 8, 9, 10 };
|
||||
|
||||
|
||||
/* Generation of the reference signal sequence according to Section 5.5.1 of 36.211 */
|
||||
int rs_sequence(ref_t * refs, uint32_t len, float alpha, uint32_t ns, uint32_t cell_id,
|
||||
refsignal_ul_cfg_t * cfg)
|
||||
{
|
||||
uint32_t i;
|
||||
|
||||
// Calculate u and v
|
||||
uint32_t u, v;
|
||||
uint32_t f_ss = (((cell_id % 30) + cfg->delta_ss) % 30);
|
||||
if (cfg->group_hopping_en) {
|
||||
sequence_t seq;
|
||||
sequence_LTE_pr(&seq, cell_id / 30, 160);
|
||||
uint32_t f_gh = 0;
|
||||
for (i = 0; i < 8; i++) {
|
||||
f_gh += seq.c[8 * ns + i] << i;
|
||||
}
|
||||
sequence_free(&seq);
|
||||
u = ((f_gh%30) + f_ss) % 30;
|
||||
} else {
|
||||
u = f_ss % 30;
|
||||
}
|
||||
|
||||
if (len < 6 * RE_X_RB) {
|
||||
v = 0;
|
||||
} else {
|
||||
if (!cfg->group_hopping_en && cfg->sequence_hopping_en) {
|
||||
sequence_t seq;
|
||||
sequence_LTE_pr(&seq, ((cell_id / 30) << 5) + f_ss, 20);
|
||||
v = seq.c[ns];
|
||||
sequence_free(&seq);
|
||||
} else {
|
||||
v = 0;
|
||||
}
|
||||
}
|
||||
if (len >= 3 * RE_X_RB) {
|
||||
uint32_t n_sz;
|
||||
uint32_t q;
|
||||
float q_hat;
|
||||
/* get largest prime n_zc<len */
|
||||
for (i = NOF_PRIME_NUMBERS - 1; i > 0; i--) {
|
||||
if (prime_numbers[i] < len) {
|
||||
n_sz = prime_numbers[i];
|
||||
break;
|
||||
}
|
||||
}
|
||||
q_hat = (float) n_sz *(u + 1) / 31;
|
||||
if ((((uint32_t) (2 * q_hat)) % 2) == 0) {
|
||||
q = (uint32_t) (q_hat + 0.5) + v;
|
||||
} else {
|
||||
q = (uint32_t) (q_hat + 0.5) - v;
|
||||
}
|
||||
cf_t *x_q = malloc(sizeof(cf_t) * n_sz);
|
||||
if (!x_q) {
|
||||
perror("malloc");
|
||||
return LIBLTE_ERROR;
|
||||
}
|
||||
for (i = 0; i < n_sz; i++) {
|
||||
x_q[i] =
|
||||
cexpf(-I * M_PI * (float) q * (float) i * ((float) i + 1) / n_sz);
|
||||
}
|
||||
for (i = 0; i < len; i++) {
|
||||
refs[i].simbol = cfg->beta * cexpf(I * alpha * i) * x_q[i % n_sz];
|
||||
}
|
||||
free(x_q);
|
||||
} else {
|
||||
if (len == RE_X_RB) {
|
||||
for (i = 0; i < len; i++) {
|
||||
refs[i].simbol = cfg->beta * cexpf(I * (phi_M_sc_12[u][i] * M_PI / 4 + alpha * i));
|
||||
}
|
||||
} else {
|
||||
for (i = 0; i < len; i++) {
|
||||
refs[i].simbol = cfg->beta * cexpf(I * (phi_M_sc_24[u][i] * M_PI / 4 + alpha * i));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return LIBLTE_SUCCESS;
|
||||
}
|
||||
|
||||
/** Initializes refsignal_t object according to 3GPP 36.211 5.5.2
|
||||
*
|
||||
*/
|
||||
int refsignal_init_LTEUL_drms_pusch(refsignal_t * q, uint32_t nof_prb, uint32_t prb_start,
|
||||
uint32_t nslot, lte_cell_t cell, refsignal_ul_cfg_t * cfg)
|
||||
{
|
||||
|
||||
uint32_t i;
|
||||
int ret = LIBLTE_ERROR_INVALID_INPUTS;
|
||||
uint32_t n_prs;
|
||||
uint32_t M_sc;
|
||||
float alpha;
|
||||
|
||||
if (q != NULL && nslot < NSLOTS_X_FRAME && lte_cell_isvalid(&cell)) {
|
||||
|
||||
bzero(q, sizeof(refsignal_t));
|
||||
|
||||
M_sc = nof_prb * RE_X_RB;
|
||||
|
||||
q->nof_refs = M_sc;
|
||||
q->nsymbols = 1;
|
||||
q->voffset = cell.id % 6;
|
||||
q->nof_prb = cell.nof_prb;
|
||||
|
||||
q->symbols_ref = malloc(sizeof(uint32_t) * 1);
|
||||
if (!q->symbols_ref) {
|
||||
perror("malloc");
|
||||
goto free_and_exit;
|
||||
}
|
||||
|
||||
if (CP_ISNORM(cell.cp)) {
|
||||
q->symbols_ref[0] = 3;
|
||||
} else {
|
||||
q->symbols_ref[0] = 2;
|
||||
}
|
||||
|
||||
q->refs = vec_malloc(q->nof_refs * sizeof(ref_t));
|
||||
if (!q->refs) {
|
||||
goto free_and_exit;
|
||||
}
|
||||
q->ch_est = vec_malloc(q->nof_refs * sizeof(cf_t));
|
||||
if (!q->ch_est) {
|
||||
goto free_and_exit;
|
||||
}
|
||||
|
||||
/* Calculate n_prs */
|
||||
uint32_t c_init;
|
||||
sequence_t seq;
|
||||
c_init = ((cell.id / 30) << 5) + (((cell.id % 30) + cfg->delta_ss) % 30);
|
||||
ret = sequence_LTE_pr(&seq, 8 * CP_NSYMB(cell.cp) * 20, c_init);
|
||||
if (ret != LIBLTE_SUCCESS) {
|
||||
goto free_and_exit;
|
||||
}
|
||||
n_prs = 0;
|
||||
for (i = 0; i < 8; i++) {
|
||||
n_prs += (seq.c[8 * CP_NSYMB(cell.cp) * nslot + i] << i);
|
||||
}
|
||||
sequence_free(&seq);
|
||||
|
||||
// Calculate cyclic shift alpha
|
||||
uint32_t n_cs =
|
||||
(n_drms_1[cfg->cyclic_shift] +
|
||||
n_drms_2[cfg->cyclic_shift_for_drms] + n_prs) % 12;
|
||||
alpha = 2 * M_PI * (n_cs) / 12;
|
||||
|
||||
if (rs_sequence(q->refs, M_sc, alpha, cell.id, nslot, cfg)) {
|
||||
fprintf(stderr, "Error generating RS sequence\n");
|
||||
goto free_and_exit;
|
||||
}
|
||||
/* mapping to resource elements */
|
||||
for (i=0;i<M_sc;i++) {
|
||||
q->refs[i].freq_idx = prb_start*RE_X_RB + i;
|
||||
q->refs[i].time_idx = q->symbols_ref[0];
|
||||
}
|
||||
|
||||
ret = LIBLTE_SUCCESS;
|
||||
}
|
||||
free_and_exit:
|
||||
if (ret == LIBLTE_ERROR) {
|
||||
refsignal_free(q);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
void refsignal_free(refsignal_t * q)
|
||||
{
|
||||
if (q->symbols_ref) {
|
||||
free(q->symbols_ref);
|
||||
}
|
||||
|
@ -199,5 +375,3 @@ void refsignal_free(refsignal_t *q) {
|
|||
}
|
||||
bzero(q, sizeof(refsignal_t));
|
||||
}
|
||||
|
||||
|
||||
|
|
|
@ -0,0 +1,127 @@
|
|||
/**
|
||||
*
|
||||
* \section COPYRIGHT
|
||||
*
|
||||
* 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/.
|
||||
*
|
||||
*/
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
// Phi values for M_sc=12 Table 5.5.1.2-1 in 36.211
|
||||
int phi_M_sc_12[30][12] = {{-1, 1, 3,-3, 3, 3, 1, 1, 3, 1,-3, 3},
|
||||
{ 1, 1, 3, 3, 3,-1, 1,-3,-3, 1,-3, 3},
|
||||
{ 1, 1,-3,-3,-3,-1,-3,-3, 1,-3, 1,-1},
|
||||
{-1, 1, 1, 1, 1,-1,-3,-3, 1,-3, 3,-1},
|
||||
{-1, 3, 1,-1, 1,-1,-3,-1, 1,-1, 1, 3},
|
||||
{ 1,-3, 3,-1,-1, 1, 1,-1,-1, 3,-3, 1},
|
||||
{-1, 3,-3,-3,-3, 3, 1,-1, 3, 3,-3, 1},
|
||||
{-3,-1,-1,-1, 1,-3, 3,-1, 1,-3, 3, 1},
|
||||
{ 1,-3, 3, 1,-1,-1,-1, 1, 1, 3,-1, 1},
|
||||
{ 1,-3,-1, 3, 3,-1,-3, 1, 1, 1, 1, 1},
|
||||
{-1, 3,-1, 1, 1,-3,-3,-1,-3,-3, 3,-1},
|
||||
{ 3, 1,-1,-1, 3, 3,-3, 1, 3, 1, 3, 3},
|
||||
{ 1,-3, 1, 1,-3, 1, 1, 1,-3,-3,-3, 1},
|
||||
{ 3, 3,-3, 3,-3, 1, 1, 3,-1,-3, 3, 3},
|
||||
{-3, 1,-1,-3,-1, 3, 1, 3, 3, 3,-1, 1},
|
||||
{ 3,-1, 1,-3,-1,-1, 1, 1, 3, 1,-1,-3},
|
||||
{ 1, 3, 1,-1, 1, 3, 3, 3,-1,-1, 3,-1},
|
||||
{-3, 1, 1, 3,-3, 3,-3,-3, 3, 1, 3,-1},
|
||||
{-3, 3, 1, 1,-3, 1,-3,-3,-1,-1, 1,-3},
|
||||
{-1, 3, 1, 3, 1,-1,-1, 3,-3,-1,-3,-1},
|
||||
{-1,-3, 1, 1, 1, 1, 3, 1,-1, 1,-3,-1},
|
||||
{-1, 3,-1, 1,-3,-3,-3,-3,-3, 1,-1,-3},
|
||||
{ 1, 1,-3,-3,-3,-3,-1, 3,-3, 1,-3, 3},
|
||||
{ 1, 1,-1,-3,-1,-3, 1,-1, 1, 3,-1, 1},
|
||||
{ 1, 1, 3, 1, 3, 3,-1, 1,-1,-3,-3, 1},
|
||||
{ 1,-3, 3, 3, 1, 3, 3, 1,-3,-1,-1, 3},
|
||||
{ 1, 3,-3,-3, 3,-3, 1,-1,-1, 3,-1,-3},
|
||||
{-3,-1,-3,-1,-3, 3, 1,-1, 1, 3,-3,-3},
|
||||
{-1, 3,-3, 3,-1, 3, 3,-3, 3, 3,-1,-1},
|
||||
{ 3,-3,-3,-1,-1,-3,-1, 3,-3, 3, 1,-1}};
|
||||
|
||||
// Phi values for M_sc=24 Table 5.5.1.2-2 in 36.211
|
||||
int phi_M_sc_24[30][24] = {{-1, 3, 1,-3, 3,-1, 1, 3,-3, 3, 1, 3,-3, 3, 1, 1,-1, 1, 3,-3, 3,-3,-1,-3},
|
||||
{-3, 3,-3,-3,-3, 1,-3,-3, 3,-1, 1, 1, 1, 3, 1,-1, 3,-3,-3, 1, 3, 1, 1,-3},
|
||||
{ 3,-1, 3, 3, 1, 1,-3, 3, 3, 3, 3, 1,-1, 3,-1, 1, 1,-1,-3,-1,-1, 1, 3, 3},
|
||||
{-1,-3, 1, 1, 3,-3, 1, 1,-3,-1,-1, 1, 3, 1, 3, 1,-1, 3, 1, 1,-3,-1,-3,-1},
|
||||
{-1,-1,-1,-3,-3,-1, 1, 1, 3, 3,-1, 3,-1, 1,-1,-3, 1,-1,-3,-3, 1,-3,-1,-1},
|
||||
{-3, 1, 1, 3,-1, 1, 3, 1,-3, 1,-3, 1, 1,-1,-1, 3,-1,-3, 3,-3,-3,-3, 1, 1},
|
||||
{ 1, 1,-1,-1, 3,-3,-3, 3,-3, 1,-1,-1, 1,-1, 1, 1,-1,-3,-1, 1,-1, 3,-1,-3},
|
||||
{-3, 3, 3,-1,-1,-3,-1, 3, 1, 3, 1, 3, 1, 1,-1, 3, 1,-1, 1, 3,-3,-1,-1, 1},
|
||||
{-3, 1, 3,-3, 1,-1,-3, 3,-3, 3,-1,-1,-1,-1, 1,-3,-3,-3, 1,-3,-3,-3, 1,-3},
|
||||
{ 1, 1,-3, 3, 3,-1,-3,-1, 3,-3, 3, 3, 3,-1, 1, 1,-3, 1,-1, 1, 1,-3, 1, 1},
|
||||
{-1, 1,-3,-3, 3,-1, 3,-1,-1,-3,-3,-3,-1,-3,-3, 1,-1, 1, 3, 3,-1, 1,-1, 3},
|
||||
{ 1, 3, 3,-3,-3, 1, 3, 1,-1,-3,-3,-3, 3, 3,-3, 3, 3,-1,-3, 3,-1, 1,-3, 1},
|
||||
{ 1, 3, 3, 1, 1, 1,-1,-1, 1,-3, 3,-1, 1, 1,-3, 3, 3,-1,-3, 3,-3,-1,-3,-1},
|
||||
{ 3,-1,-1,-1,-1,-3,-1, 3, 3, 1,-1, 1, 3, 3, 3,-1, 1, 1,-3, 1, 3,-1,-3, 3},
|
||||
{-3,-3, 3, 1, 3, 1,-3, 3, 1, 3, 1, 1, 3, 3,-1,-1,-3, 1,-3,-1, 3, 1, 1, 3},
|
||||
{-1,-1, 1,-3, 1, 3,-3, 1,-1,-3,-1, 3, 1, 3, 1,-1,-3,-3,-1,-1,-3,-3,-3,-1},
|
||||
{-1,-3, 3,-1,-1,-1,-1, 1, 1,-3, 3, 1, 3, 3, 1,-1, 1,-3, 1,-3, 1, 1,-3,-1},
|
||||
{ 1, 3,-1, 3, 3,-1,-3, 1,-1,-3, 3, 3, 3,-1, 1, 1, 3,-1,-3,-1, 3,-1,-1,-1},
|
||||
{ 1, 1, 1, 1, 1,-1, 3,-1,-3, 1, 1, 3,-3, 1,-3,-1, 1, 1,-3,-3, 3, 1, 1,-3},
|
||||
{ 1, 3, 3, 1,-1,-3, 3,-1, 3, 3, 3,-3, 1,-1, 1,-1,-3,-1, 1, 3,-1, 3,-3,-3},
|
||||
{-1,-3, 3,-3,-3,-3,-1,-1,-3,-1,-3, 3, 1, 3,-3,-1, 3,-1, 1,-1, 3,-3, 1,-1},
|
||||
{-3,-3, 1, 1,-1, 1,-1, 1,-1, 3, 1,-3,-1, 1,-1, 1,-1,-1, 3, 3,-3,-1, 1,-3},
|
||||
{-3,-1,-3, 3, 1,-1,-3,-1,-3,-3, 3,-3, 3,-3,-1, 1, 3, 1,-3, 1, 3, 3,-1,-3},
|
||||
{-1,-1,-1,-1, 3, 3, 3, 1, 3, 3,-3, 1, 3,-1, 3,-1, 3, 3,-3, 3, 1,-1, 3, 3},
|
||||
{ 1,-1, 3, 3,-1,-3, 3,-3,-1,-1, 3,-1, 3,-1,-1, 1, 1, 1, 1,-1,-1,-3,-1, 3},
|
||||
{ 1,-1, 1,-1, 3,-1, 3, 1, 1,-1,-1,-3, 1, 1,-3, 1, 3,-3, 1, 1,-3,-3,-1,-1},
|
||||
{-3,-1, 1, 3, 1, 1,-3,-1,-1,-3, 3,-3, 3, 1,-3, 3,-3, 1,-1, 1,-3, 1, 1, 1},
|
||||
{-1,-3, 3, 3, 1, 1, 3,-1,-3,-1,-1,-1, 3, 1,-3,-3,-1, 3,-3,-1,-3,-1,-3,-1},
|
||||
{-1,-3,-1,-1, 1,-3,-1,-1, 1,-1,-3, 1, 1,-3, 1,-3,-3, 3, 1, 1,-1, 3,-1,-1},
|
||||
{ 1, 1,-1,-1,-3,-1, 3,-1, 3,-1, 1, 3, 1,-1, 3, 1, 3,-3,-3, 1,-1,-1, 1, 3}};
|
||||
|
||||
// Prime numbers used for Section 5.5.1.1 of 36.211
|
||||
#define NOF_PRIME_NUMBERS 309
|
||||
uint32_t prime_numbers[NOF_PRIME_NUMBERS] = { 2, 3, 5, 7, 11, 13, 17, 19, 23, 29,
|
||||
31, 37, 41, 43, 47, 53, 59, 61, 67, 71,
|
||||
73, 79, 83, 89, 97, 101, 103, 107, 109, 113,
|
||||
127, 131, 137, 139, 149, 151, 157, 163, 167, 173,
|
||||
179, 181, 191, 193, 197, 199, 211, 223, 227, 229,
|
||||
233, 239, 241, 251, 257, 263, 269, 271, 277, 281,
|
||||
283, 293, 307, 311, 313, 317, 331, 337, 347, 349,
|
||||
353, 359, 367, 373, 379, 383, 389, 397, 401, 409,
|
||||
419, 421, 431, 433, 439, 443, 449, 457, 461, 463,
|
||||
467, 479, 487, 491, 499, 503, 509, 521, 523, 541,
|
||||
547, 557, 563, 569, 571, 577, 587, 593, 599, 601,
|
||||
607, 613, 617, 619, 631, 641, 643, 647, 653, 659,
|
||||
661, 673, 677, 683, 691, 701, 709, 719, 727, 733,
|
||||
739, 743, 751, 757, 761, 769, 773, 787, 797, 809,
|
||||
811, 821, 823, 827, 829, 839, 853, 857, 859, 863,
|
||||
877, 881, 883, 887, 907, 911, 919, 929, 937, 941,
|
||||
947, 953, 967, 971, 977, 983, 991, 997,1009,1013,
|
||||
1019,1021,1031,1033,1039,1049,1051,1061,1063,1069,
|
||||
1087,1091,1093,1097,1103,1109,1117,1123,1129,1151,
|
||||
1153,1163,1171,1181,1187,1193,1201,1213,1217,1223,
|
||||
1229,1231,1237,1249,1259,1277,1279,1283,1289,1291,
|
||||
1297,1301,1303,1307,1319,1321,1327,1361,1367,1373,
|
||||
1381,1399,1409,1423,1427,1429,1433,1439,1447,1451,
|
||||
1453,1459,1471,1481,1483,1487,1489,1493,1499,1511,
|
||||
1523,1531,1543,1549,1553,1559,1567,1571,1579,1583,
|
||||
1597,1601,1607,1609,1613,1619,1621,1627,1637,1657,
|
||||
1663,1667,1669,1693,1697,1699,1709,1721,1723,1733,
|
||||
1741,1747,1753,1759,1777,1783,1787,1789,1801,1811,
|
||||
1823,1831,1847,1861,1867,1871,1873,1877,1879,1889,
|
||||
1901,1907,1913,1931,1933,1949,1951,1973,1979,1987,
|
||||
1993,1997,1999,2003,2011,2017,2027,2029,2039};
|
||||
|
|
@ -20,13 +20,26 @@
|
|||
#
|
||||
|
||||
########################################################################
|
||||
# Channel Estimation TEST
|
||||
# Downlink Channel Estimation TEST
|
||||
########################################################################
|
||||
|
||||
ADD_EXECUTABLE(chest_test chest_test.c)
|
||||
TARGET_LINK_LIBRARIES(chest_test lte_phy)
|
||||
ADD_EXECUTABLE(chest_test_dl chest_test_dl.c)
|
||||
TARGET_LINK_LIBRARIES(chest_test_dl lte_phy)
|
||||
|
||||
ADD_TEST(chest_test_dl_cellid0 chest_dl_test -c 0)
|
||||
ADD_TEST(chest_test_dl_cellid1 chest_dl_test -c 1)
|
||||
ADD_TEST(chest_test_dl_cellid2 chest_dl_test -c 2)
|
||||
|
||||
########################################################################
|
||||
# Uplink Channel Estimation TEST
|
||||
########################################################################
|
||||
|
||||
ADD_EXECUTABLE(chest_test_ul chest_test_ul.c)
|
||||
TARGET_LINK_LIBRARIES(chest_test_ul lte_phy)
|
||||
|
||||
#ADD_TEST(chest_test_ul_cellid0 chest_ul_test -c 0)
|
||||
#ADD_TEST(chest_test_ul_cellid1 chest_ul_test -c 1)
|
||||
#ADD_TEST(chest_test_ul_cellid2 chest_ul_test -c 2)
|
||||
|
||||
ADD_TEST(chest_test_all_cellids chest_test)
|
||||
ADD_TEST(chest_test_cellid chest_test -c 1)
|
||||
|
||||
|
||||
|
|
|
@ -0,0 +1,249 @@
|
|||
/**
|
||||
*
|
||||
* \section COPYRIGHT
|
||||
*
|
||||
* 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/.
|
||||
*
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <strings.h>
|
||||
#include <unistd.h>
|
||||
#include <complex.h>
|
||||
|
||||
#include "liblte/phy/phy.h"
|
||||
|
||||
lte_cell_t cell = {
|
||||
6, // nof_prb
|
||||
MAX_PORTS, // nof_ports
|
||||
1000, // cell_id
|
||||
CPNORM // cyclic prefix
|
||||
};
|
||||
|
||||
char *output_matlab = NULL;
|
||||
|
||||
void usage(char *prog) {
|
||||
printf("Usage: %s [recov]\n", prog);
|
||||
|
||||
printf("\t-r nof_prb [Default %d]\n", cell.nof_prb);
|
||||
printf("\t-e extended cyclic prefix [Default normal]\n");
|
||||
|
||||
printf("\t-c cell_id (1000 tests all). [Default %d]\n", cell.id);
|
||||
|
||||
printf("\t-o output matlab file [Default %s]\n",output_matlab?output_matlab:"None");
|
||||
printf("\t-v increase verbosity\n");
|
||||
}
|
||||
|
||||
void parse_args(int argc, char **argv) {
|
||||
int opt;
|
||||
while ((opt = getopt(argc, argv, "recov")) != -1) {
|
||||
switch(opt) {
|
||||
case 'r':
|
||||
cell.nof_prb = atoi(argv[optind]);
|
||||
break;
|
||||
case 'e':
|
||||
cell.cp = CPEXT;
|
||||
break;
|
||||
case 'c':
|
||||
cell.id = atoi(argv[optind]);
|
||||
break;
|
||||
case 'o':
|
||||
output_matlab = argv[optind];
|
||||
break;
|
||||
case 'v':
|
||||
verbose++;
|
||||
break;
|
||||
default:
|
||||
usage(argv[0]);
|
||||
exit(-1);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
int check_mse(float mod, float arg, int n_port) {
|
||||
INFO("mod=%.4f, arg=%.4f, n_port=%d\n", mod, arg, n_port);
|
||||
switch(n_port) {
|
||||
case 0:
|
||||
if (mod > 0.029) {
|
||||
return -1;
|
||||
}
|
||||
if (arg > 0.029) {
|
||||
return -1;
|
||||
}
|
||||
break;
|
||||
case 1:
|
||||
if (mod > 0.012) {
|
||||
return -1;
|
||||
}
|
||||
if (arg > 0.012) {
|
||||
return -1;
|
||||
}
|
||||
break;
|
||||
case 2:
|
||||
case 3:
|
||||
if (mod > 3.33) {
|
||||
return -1;
|
||||
}
|
||||
if (arg > 0.63) {
|
||||
return -1;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
int main(int argc, char **argv) {
|
||||
chest_t eq;
|
||||
cf_t *input = NULL, *ce = NULL, *h = NULL;
|
||||
refsignal_t refs;
|
||||
int i, j, n_port, n_slot, cid, num_re;
|
||||
int ret = -1;
|
||||
int max_cid;
|
||||
FILE *fmatlab = NULL;
|
||||
float mse_mag, mse_phase;
|
||||
|
||||
parse_args(argc,argv);
|
||||
|
||||
if (output_matlab) {
|
||||
fmatlab=fopen(output_matlab, "w");
|
||||
if (!fmatlab) {
|
||||
perror("fopen");
|
||||
goto do_exit;
|
||||
}
|
||||
}
|
||||
|
||||
num_re = cell.nof_prb * RE_X_RB * CP_NSYMB(cell.cp);
|
||||
|
||||
input = malloc(num_re * sizeof(cf_t));
|
||||
if (!input) {
|
||||
perror("malloc");
|
||||
goto do_exit;
|
||||
}
|
||||
h = malloc(num_re * sizeof(cf_t));
|
||||
if (!h) {
|
||||
perror("malloc");
|
||||
goto do_exit;
|
||||
}
|
||||
ce = malloc(num_re * sizeof(cf_t));
|
||||
if (!ce) {
|
||||
perror("malloc");
|
||||
goto do_exit;
|
||||
}
|
||||
|
||||
if (cell.id == 1000) {
|
||||
cid = 0;
|
||||
max_cid = 504;
|
||||
} else {
|
||||
cid = cell.id;
|
||||
max_cid = cell.id;
|
||||
}
|
||||
|
||||
while(cid <= max_cid) {
|
||||
cell.id = cid;
|
||||
if (chest_init_LTEUL(&eq, cell)) {
|
||||
fprintf(stderr, "Error initializing equalizer\n");
|
||||
goto do_exit;
|
||||
}
|
||||
|
||||
for (n_slot=0;n_slot<NSLOTS_X_FRAME;n_slot++) {
|
||||
for (n_port=0;n_port<cell.nof_ports;n_port++) {
|
||||
|
||||
if (refsignal_init_LTEDL(&refs, n_port, n_slot, cell)) {
|
||||
fprintf(stderr, "Error initiating CRS slot=%d\n", i);
|
||||
return -1;
|
||||
}
|
||||
|
||||
bzero(input, sizeof(cf_t) * num_re);
|
||||
for (i=0;i<num_re;i++) {
|
||||
input[i] = 0.5-rand()/RAND_MAX+I*(0.5-rand()/RAND_MAX);
|
||||
}
|
||||
|
||||
bzero(ce, sizeof(cf_t) * num_re);
|
||||
bzero(h, sizeof(cf_t) * num_re);
|
||||
|
||||
refsignal_put(&refs, input);
|
||||
|
||||
for (i=0;i<CP_NSYMB(cell.cp);i++) {
|
||||
for (j=0;j<cell.nof_prb * RE_X_RB;j++) {
|
||||
float x = -1+(float) i/CP_NSYMB(cell.cp) + cosf(2 * M_PI * (float) j/cell.nof_prb/RE_X_RB);
|
||||
h[i*cell.nof_prb * RE_X_RB+j] = (3+x) * cexpf(I * x);
|
||||
input[i*cell.nof_prb * RE_X_RB+j] *= h[i*cell.nof_prb * RE_X_RB+j];
|
||||
}
|
||||
}
|
||||
|
||||
chest_ce_slot_port(&eq, input, ce, n_slot, n_port);
|
||||
|
||||
mse_mag = mse_phase = 0;
|
||||
for (i=0;i<num_re;i++) {
|
||||
mse_mag += (cabsf(h[i]) - cabsf(ce[i])) * (cabsf(h[i]) - cabsf(ce[i])) / num_re;
|
||||
mse_phase += (cargf(h[i]) - cargf(ce[i])) * (cargf(h[i]) - cargf(ce[i])) / num_re;
|
||||
}
|
||||
|
||||
if (check_mse(mse_mag, mse_phase, n_port)) {
|
||||
goto do_exit;
|
||||
}
|
||||
|
||||
if (fmatlab) {
|
||||
fprintf(fmatlab, "input=");
|
||||
vec_fprint_c(fmatlab, input, num_re);
|
||||
fprintf(fmatlab, ";\n");
|
||||
fprintf(fmatlab, "h=");
|
||||
vec_fprint_c(fmatlab, h, num_re);
|
||||
fprintf(fmatlab, ";\n");
|
||||
fprintf(fmatlab, "ce=");
|
||||
vec_fprint_c(fmatlab, ce, num_re);
|
||||
fprintf(fmatlab, ";\n");
|
||||
chest_fprint(&eq, fmatlab, n_slot, n_port);
|
||||
}
|
||||
}
|
||||
}
|
||||
chest_free(&eq);
|
||||
cid+=10;
|
||||
INFO("cid=%d\n", cid);
|
||||
}
|
||||
|
||||
|
||||
ret = 0;
|
||||
|
||||
do_exit:
|
||||
|
||||
if (ce) {
|
||||
free(ce);
|
||||
}
|
||||
if (input) {
|
||||
free(input);
|
||||
}
|
||||
if (h) {
|
||||
free(h);
|
||||
}
|
||||
|
||||
if (!ret) {
|
||||
printf("OK\n");
|
||||
} else {
|
||||
printf("Error at cid=%d, slot=%d, port=%d\n",cid, n_slot, n_port);
|
||||
}
|
||||
|
||||
exit(ret);
|
||||
}
|
|
@ -25,14 +25,13 @@
|
|||
*
|
||||
*/
|
||||
|
||||
|
||||
#include "liblte/phy/common/sequence.h"
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
#include <strings.h>
|
||||
#include <assert.h>
|
||||
|
||||
#include "liblte/phy/common/sequence.h"
|
||||
|
||||
#define Nc 1600
|
||||
|
||||
|
||||
|
@ -75,7 +74,7 @@ void generate_prs_c(sequence_t *q, uint32_t seed) {
|
|||
free(x2);
|
||||
}
|
||||
|
||||
int sequence_LTEPRS(sequence_t *q, uint32_t len, uint32_t seed) {
|
||||
int sequence_LTE_pr(sequence_t *q, uint32_t len, uint32_t seed) {
|
||||
if (sequence_init(q, len)) {
|
||||
return LIBLTE_ERROR;
|
||||
}
|
||||
|
|
|
@ -35,7 +35,7 @@
|
|||
*/
|
||||
int sequence_pbch(sequence_t *seq, lte_cp_t cp, uint32_t cell_id) {
|
||||
bzero(seq, sizeof(sequence_t));
|
||||
return sequence_LTEPRS(seq, CP_ISNORM(cp)?1920:1728, cell_id);
|
||||
return sequence_LTE_pr(seq, CP_ISNORM(cp)?1920:1728, cell_id);
|
||||
}
|
||||
|
||||
/**
|
||||
|
@ -43,7 +43,7 @@ int sequence_pbch(sequence_t *seq, lte_cp_t cp, uint32_t cell_id) {
|
|||
*/
|
||||
int sequence_pcfich(sequence_t *seq, uint32_t nslot, uint32_t cell_id) {
|
||||
bzero(seq, sizeof(sequence_t));
|
||||
return sequence_LTEPRS(seq, 32, (nslot/2+1) * (2*cell_id + 1) * 512 + cell_id);
|
||||
return sequence_LTE_pr(seq, 32, (nslot/2+1) * (2*cell_id + 1) * 512 + cell_id);
|
||||
}
|
||||
|
||||
|
||||
|
@ -52,7 +52,7 @@ int sequence_pcfich(sequence_t *seq, uint32_t nslot, uint32_t cell_id) {
|
|||
*/
|
||||
int sequence_phich(sequence_t *seq, uint32_t nslot, uint32_t cell_id) {
|
||||
bzero(seq, sizeof(sequence_t));
|
||||
return sequence_LTEPRS(seq, 12, (nslot/2+1) * (2*cell_id + 1) * 512 + cell_id);
|
||||
return sequence_LTE_pr(seq, 12, (nslot/2+1) * (2*cell_id + 1) * 512 + cell_id);
|
||||
}
|
||||
|
||||
/**
|
||||
|
@ -60,7 +60,7 @@ int sequence_phich(sequence_t *seq, uint32_t nslot, uint32_t cell_id) {
|
|||
*/
|
||||
int sequence_pdcch(sequence_t *seq, uint32_t nslot, uint32_t cell_id, uint32_t len) {
|
||||
bzero(seq, sizeof(sequence_t));
|
||||
return sequence_LTEPRS(seq, len, (nslot/2) * 512 + cell_id);
|
||||
return sequence_LTE_pr(seq, len, (nslot/2) * 512 + cell_id);
|
||||
}
|
||||
|
||||
/**
|
||||
|
@ -68,5 +68,5 @@ int sequence_pdcch(sequence_t *seq, uint32_t nslot, uint32_t cell_id, uint32_t l
|
|||
*/
|
||||
int sequence_pdsch(sequence_t *seq, unsigned short rnti, int q, uint32_t nslot, uint32_t cell_id, uint32_t len) {
|
||||
bzero(seq, sizeof(sequence_t));
|
||||
return sequence_LTEPRS(seq, len, (rnti<<14) + (q<<13) + ((nslot/2)<<9) + cell_id);
|
||||
return sequence_LTE_pr(seq, len, (rnti<<14) + (q<<13) + ((nslot/2)<<9) + cell_id);
|
||||
}
|
||||
|
|
Loading…
Reference in New Issue