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62 lines
2.2 KiB
C
62 lines
2.2 KiB
C
/*
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* Copyright 2013-2020 Software Radio Systems Limited
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*
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* This file is part of srsLTE.
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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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* 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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*
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* A copy of the GNU Affero General Public License can be found in
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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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/**********************************************************************************************
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* File: dft_precoding.h
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*
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* Description: DFT-based transform precoding object.
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* Used in generation of uplink SCFDMA signals.
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*
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* Reference: 3GPP TS 36.211 version 10.0.0 Release 10 Sec. 5.3.3
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*********************************************************************************************/
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#ifndef SRSLTE_DFT_PRECODING_H
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#define SRSLTE_DFT_PRECODING_H
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#include "srslte/config.h"
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#include "srslte/phy/common/phy_common.h"
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#include "srslte/phy/dft/dft.h"
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/* DFT-based Transform Precoding object */
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typedef struct SRSLTE_API {
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uint32_t max_prb;
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srslte_dft_plan_t dft_plan[SRSLTE_MAX_PRB + 1];
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} srslte_dft_precoding_t;
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SRSLTE_API int srslte_dft_precoding_init(srslte_dft_precoding_t* q, uint32_t max_prb, bool is_tx);
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SRSLTE_API int srslte_dft_precoding_init_tx(srslte_dft_precoding_t* q, uint32_t max_prb);
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SRSLTE_API int srslte_dft_precoding_init_rx(srslte_dft_precoding_t* q, uint32_t max_prb);
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SRSLTE_API void srslte_dft_precoding_free(srslte_dft_precoding_t* q);
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SRSLTE_API bool srslte_dft_precoding_valid_prb(uint32_t nof_prb);
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SRSLTE_API uint32_t srslte_dft_precoding_get_valid_prb(uint32_t nof_prb);
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SRSLTE_API int
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srslte_dft_precoding(srslte_dft_precoding_t* q, cf_t* input, cf_t* output, uint32_t nof_prb, uint32_t nof_symbols);
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#endif // SRSLTE_DFT_PRECODING_H
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