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/* GMR-1 SDR - FCCH bursts */
/* See GMR-1 05.004 (ETSI TS 101 376-5-4 V3.1.1) - Section 8 */
/* (C) 2011-2016 by Sylvain Munaut <tnt@246tNt.com>
* All Rights Reserved
*
* This program 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.
*
* This program 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.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __OSMO_GMR1_SDR_FCCH_H__
#define __OSMO_GMR1_SDR_FCCH_H__
/*! \defgroup fcch FCCH bursts
* \ingroup sdr
* @{
*/
/*! \file sdr/fcch.h
* \brief Osmocom GMR-1 FCCH bursts header
*/
#include <osmocom/dsp/cxvec.h>
struct gmr1_fcch_burst
{
float freq; /*!< \brief Frequency sweep range */
int len; /*!< \brief Burst duration in symbols */
};
extern const struct gmr1_fcch_burst gmr1_fcch_burst;
extern const struct gmr1_fcch_burst gmr1_fcch3_lband_burst;
extern const struct gmr1_fcch_burst gmr1_fcch3_sband_burst;
int gmr1_fcch_rough(const struct gmr1_fcch_burst *burst_type,
struct osmo_cxvec *search_win_in, int sps, float freq_shift,
int *toa);
int gmr1_fcch_rough_multi(const struct gmr1_fcch_burst *burst_type,
struct osmo_cxvec *search_win_in, int sps, float freq_shift,
int *toa, int N);
int gmr1_fcch_fine(const struct gmr1_fcch_burst *burst_type,
struct osmo_cxvec *burst_in, int sps, float freq_shift,
int *toa, float *freq_error);
int gmr1_fcch_snr(const struct gmr1_fcch_burst *burst_type,
struct osmo_cxvec *burst_in, int sps, float freq_shift,
float *snr);
/*! @} */
#endif /* __OSMO_GMR1_SDR_FCCH_H__ */
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