mirror of https://github.com/pvnis/srsRAN_4G.git
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
129 lines
5.7 KiB
C
129 lines
5.7 KiB
C
/**
|
|
*
|
|
* \section COPYRIGHT
|
|
*
|
|
* Copyright 2013-2015 Software Radio Systems Limited
|
|
*
|
|
* \section LICENSE
|
|
*
|
|
* This file is part of the srsLTE library.
|
|
*
|
|
* srsLTE is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as
|
|
* published by the Free Software Foundation, either version 3 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* srsLTE 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 Affero General Public License for more details.
|
|
*
|
|
* A copy of the GNU Affero 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/.
|
|
*
|
|
*/
|
|
|
|
/******************************************************************************
|
|
* File: precoding.h
|
|
*
|
|
* Description: MIMO precoding and deprecoding.
|
|
* Single antenna and tx diversity supported.
|
|
*
|
|
* Reference: 3GPP TS 36.211 version 10.0.0 Release 10 Sec. 6.3.4
|
|
*****************************************************************************/
|
|
|
|
#ifndef PRECODING_H_
|
|
#define PRECODING_H_
|
|
|
|
#include "srslte/config.h"
|
|
#include "srslte/phy/common/phy_common.h"
|
|
|
|
/** The precoder takes as input nlayers vectors "x" from the
|
|
* layer mapping and generates nports vectors "y" to be mapped onto
|
|
* resources on each of the antenna ports.
|
|
*/
|
|
|
|
|
|
/* Generates the vector "y" from the input vector "x"
|
|
*/
|
|
SRSLTE_API int srslte_precoding_single(cf_t *x,
|
|
cf_t *y,
|
|
int nof_symbols);
|
|
|
|
SRSLTE_API int srslte_precoding_diversity(cf_t *x[SRSLTE_MAX_LAYERS],
|
|
cf_t *y[SRSLTE_MAX_PORTS],
|
|
int nof_ports,
|
|
int nof_symbols);
|
|
|
|
SRSLTE_API int srslte_precoding_cdd(cf_t *x[SRSLTE_MAX_LAYERS],
|
|
cf_t *y[SRSLTE_MAX_PORTS],
|
|
int nof_layers,
|
|
int nof_ports,
|
|
int nof_symbols);
|
|
|
|
SRSLTE_API int srslte_precoding_type(cf_t *x[SRSLTE_MAX_LAYERS],
|
|
cf_t *y[SRSLTE_MAX_PORTS],
|
|
int nof_layers,
|
|
int nof_ports,
|
|
int codebook_idx,
|
|
int nof_symbols,
|
|
srslte_mimo_type_t type);
|
|
|
|
/* Estimates the vector "x" based on the received signal "y" and the channel estimates "h"
|
|
*/
|
|
SRSLTE_API int srslte_predecoding_single(cf_t *y,
|
|
cf_t *h,
|
|
cf_t *x,
|
|
int nof_symbols,
|
|
float noise_estimate);
|
|
|
|
SRSLTE_API int srslte_predecoding_single_multi(cf_t *y[SRSLTE_MAX_PORTS],
|
|
cf_t *h[SRSLTE_MAX_PORTS],
|
|
cf_t *x,
|
|
int nof_rxant,
|
|
int nof_symbols,
|
|
float noise_estimate);
|
|
|
|
SRSLTE_API int srslte_predecoding_diversity(cf_t *y,
|
|
cf_t *h[SRSLTE_MAX_PORTS],
|
|
cf_t *x[SRSLTE_MAX_LAYERS],
|
|
int nof_ports,
|
|
int nof_symbols);
|
|
|
|
SRSLTE_API int srslte_predecoding_diversity_multi(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_symbols);
|
|
|
|
SRSLTE_API int srslte_predecoding_type(cf_t *y,
|
|
cf_t *h[SRSLTE_MAX_PORTS],
|
|
cf_t *x[SRSLTE_MAX_LAYERS],
|
|
int nof_ports,
|
|
int nof_layers,
|
|
int nof_symbols,
|
|
srslte_mimo_type_t type,
|
|
float noise_estimate);
|
|
|
|
SRSLTE_API int srslte_predecoding_type_multi(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,
|
|
int codebook_idx,
|
|
int nof_symbols,
|
|
srslte_mimo_type_t type,
|
|
float noise_estimate);
|
|
|
|
int srslte_precoding_pmi_select (cf_t *h[SRSLTE_MAX_PORTS][SRSLTE_MAX_PORTS],
|
|
uint32_t nof_symbols,
|
|
float noise_estimate,
|
|
int nof_layers,
|
|
uint32_t *pmi,
|
|
float sinr[SRSLTE_MAX_CODEBOOKS]);
|
|
|
|
#endif /* PRECODING_H_ */
|