2014-03-03 11:09:26 -08:00
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/**
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*
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* \section COPYRIGHT
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*
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2015-11-13 04:22:33 -08:00
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* Copyright 2013-2015 Software Radio Systems Limited
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*
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* \section LICENSE
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*
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2015-03-18 05:31:13 -07:00
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* This file is part of the srsLTE library.
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*
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* srsLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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2014-03-03 11:09:26 -08:00
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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2014-03-03 11:09:26 -08:00
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*
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* A copy of the GNU Affero General Public License can be found in
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2014-03-03 11:09:26 -08:00
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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2015-04-03 05:49:12 -07:00
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/******************************************************************************
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* File: precoding.h
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*
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* Description: MIMO precoding and deprecoding.
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* Single antenna and tx diversity supported.
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*
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* Reference: 3GPP TS 36.211 version 10.0.0 Release 10 Sec. 6.3.4
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*****************************************************************************/
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2018-03-31 10:04:04 -07:00
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#ifndef SRSLTE_PRECODING_H
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#define SRSLTE_PRECODING_H
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2015-03-18 05:16:28 -07:00
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#include "srslte/config.h"
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#include "srslte/phy/common/phy_common.h"
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2014-06-13 04:42:29 -07:00
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2014-03-03 11:09:26 -08:00
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/** The precoder takes as input nlayers vectors "x" from the
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* layer mapping and generates nports vectors "y" to be mapped onto
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* resources on each of the antenna ports.
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*/
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2014-11-13 07:14:22 -08:00
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2014-03-03 11:09:26 -08:00
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/* Generates the vector "y" from the input vector "x"
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*/
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2016-04-08 08:04:01 -07:00
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SRSLTE_API int srslte_precoding_single(cf_t *x,
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cf_t *y,
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int nof_symbols,
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float scaling);
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2016-04-08 08:04:01 -07:00
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SRSLTE_API int srslte_precoding_diversity(cf_t *x[SRSLTE_MAX_LAYERS],
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cf_t *y[SRSLTE_MAX_PORTS],
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int nof_ports,
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int nof_symbols,
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float scaling);
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SRSLTE_API int srslte_precoding_cdd(cf_t *x[SRSLTE_MAX_LAYERS],
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cf_t *y[SRSLTE_MAX_PORTS],
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int nof_layers,
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int nof_ports,
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int nof_symbols,
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float scaling);
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2015-03-18 11:14:24 -07:00
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2019-04-23 01:53:11 -07:00
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SRSLTE_API int srslte_precoding_type(cf_t* x[SRSLTE_MAX_LAYERS],
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cf_t* y[SRSLTE_MAX_PORTS],
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int nof_layers,
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int nof_ports,
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int codebook_idx,
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int nof_symbols,
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float scaling,
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srslte_tx_scheme_t type);
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/* Estimates the vector "x" based on the received signal "y" and the channel estimates "h"
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*/
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SRSLTE_API int srslte_predecoding_single(cf_t *y,
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cf_t *h,
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cf_t *x,
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float *csi,
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int nof_symbols,
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float scaling,
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float noise_estimate);
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2017-02-17 00:58:37 -08:00
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SRSLTE_API int srslte_predecoding_single_multi(cf_t *y[SRSLTE_MAX_PORTS],
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cf_t *h[SRSLTE_MAX_PORTS],
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cf_t *x,
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float *csi[SRSLTE_MAX_CODEWORDS],
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int nof_rxant,
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int nof_symbols,
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float scaling,
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float noise_estimate);
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2016-04-08 08:04:01 -07:00
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SRSLTE_API int srslte_predecoding_diversity(cf_t *y,
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cf_t *h[SRSLTE_MAX_PORTS],
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cf_t *x[SRSLTE_MAX_LAYERS],
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int nof_ports,
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int nof_symbols,
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float scaling);
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2017-02-17 00:58:37 -08:00
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SRSLTE_API int srslte_predecoding_diversity_multi(cf_t *y[SRSLTE_MAX_PORTS],
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cf_t *h[SRSLTE_MAX_PORTS][SRSLTE_MAX_PORTS],
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cf_t *x[SRSLTE_MAX_LAYERS],
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float *csi[SRSLTE_MAX_LAYERS],
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int nof_rxant,
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int nof_ports,
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int nof_symbols,
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float scaling);
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2017-08-17 01:17:48 -07:00
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SRSLTE_API void srslte_predecoding_set_mimo_decoder (srslte_mimo_decoder_t _mimo_decoder);
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2019-04-23 01:53:11 -07:00
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SRSLTE_API int srslte_predecoding_type(cf_t* y[SRSLTE_MAX_PORTS],
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cf_t* h[SRSLTE_MAX_PORTS][SRSLTE_MAX_PORTS],
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cf_t* x[SRSLTE_MAX_LAYERS],
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float* csi[SRSLTE_MAX_CODEWORDS],
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int nof_rxant,
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int nof_ports,
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int nof_layers,
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int codebook_idx,
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int nof_symbols,
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srslte_tx_scheme_t type,
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float scaling,
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float noise_estimate);
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2017-08-17 01:17:48 -07:00
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SRSLTE_API int srslte_precoding_pmi_select(cf_t *h[SRSLTE_MAX_PORTS][SRSLTE_MAX_PORTS],
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uint32_t nof_symbols,
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float noise_estimate,
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int nof_layers,
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uint32_t *pmi,
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float sinr[SRSLTE_MAX_CODEBOOKS]);
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2017-08-29 00:59:06 -07:00
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SRSLTE_API int srslte_precoding_cn(cf_t *h[SRSLTE_MAX_PORTS][SRSLTE_MAX_PORTS],
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uint32_t nof_tx_antennas,
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uint32_t nof_rx_antennas,
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uint32_t nof_symbols,
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float *cn);
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2018-03-31 10:04:04 -07:00
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#endif // SRSLTE_PRECODING_H
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