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52 lines
1.8 KiB
C
52 lines
1.8 KiB
C
/**
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* Copyright 2013-2022 Software Radio Systems Limited
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*
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* This file is part of srsRAN.
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*
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* srsRAN 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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* srsRAN 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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#ifndef SRSRAN_CHEST_COMMON_H
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#define SRSRAN_CHEST_COMMON_H
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#include "srsran/config.h"
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#include <stdint.h>
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#define SRSRAN_CHEST_MAX_SMOOTH_FIL_LEN 64
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typedef enum SRSRAN_API {
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SRSRAN_CHEST_FILTER_GAUSS = 0,
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SRSRAN_CHEST_FILTER_TRIANGLE,
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SRSRAN_CHEST_FILTER_NONE
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} srsran_chest_filter_t;
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SRSRAN_API void srsran_chest_average_pilots(cf_t* input,
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cf_t* output,
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float* filter,
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uint32_t nof_ref,
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uint32_t nof_symbols,
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uint32_t filter_len);
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SRSRAN_API uint32_t srsran_chest_set_smooth_filter3_coeff(float* smooth_filter, float w);
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SRSRAN_API float srsran_chest_estimate_noise_pilots(cf_t* noisy, cf_t* noiseless, cf_t* noise_vec, uint32_t nof_pilots);
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SRSRAN_API uint32_t srsran_chest_set_triangle_filter(float* fil, int filter_len);
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SRSRAN_API uint32_t srsran_chest_set_smooth_filter_gauss(float* filter, uint32_t order, float std_dev);
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#endif // SRSRAN_CHEST_COMMON_H
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