/**
 *
 * \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/.
 *
 */

#ifndef CHEST_
#define CHEST_

#include <stdint.h>
#include "srslte/config.h"

#define SRSLTE_CHEST_MAX_SMOOTH_FIL_LEN  65


SRSLTE_API void srslte_chest_average_pilots(cf_t *input, 
                                            cf_t *output, 
                                            float *filter, 
                                            uint32_t nof_ref, 
                                            uint32_t nof_symbols, 
                                            uint32_t filter_len); 

SRSLTE_API void srslte_chest_set_smooth_filter3_coeff(float *smooth_filter, 
                                                      float w); 

SRSLTE_API float srslte_chest_estimate_noise_pilots(cf_t *noisy, 
                                                    cf_t *noiseless, 
                                                    cf_t *noise_vec, 
                                                    uint32_t nof_pilots); 

SRSLTE_API void srslte_chest_set_triangle_filter(float *fil, 
                                                 int filter_len); 

#endif