core_algorithms.h

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/* -*- c++ -*- */
/*
 * Copyright 2004,2012 Free Software Foundation, Inc.
 *
 * This file is part of GNU Radio
 *
 * GNU Radio is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3, or (at your option)
 * any later version.
 *
 * GNU Radio 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GNU Radio; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */

#ifndef INCLUDED_CORE_ALGORITHMS_H
#define INCLUDED_CORE_ALGORITHMS_H

#include <cmath>
#include <vector>
#include <gnuradio/digital/metric_type.h>
#include <gnuradio/trellis/fsm.h>
#include <gnuradio/trellis/interleaver.h>

namespace gr {
  namespace trellis {

    float min(float a, float b);
    float min_star(float a, float b);

    template <class T>
    void viterbi_algorithm(int I, int S, int O,
                           const std::vector<int> &NS,
                           const std::vector<int> &OS,
                           const std::vector< std::vector<int> > &PS,
                           const std::vector< std::vector<int> > &PI,
                           int K,
                           int S0,int SK,
                           const float *in, T *out);

    template <class Ti, class To>
    void viterbi_algorithm_combined(int I, int S, int O,
                                    const std::vector<int> &NS,
                                    const std::vector<int> &OS,
                                    const std::vector< std::vector<int> > &PS,
                                    const std::vector< std::vector<int> > &PI,
                                    int K,
                                    int S0,int SK,
                                    int D,
                                    const std::vector<Ti> &TABLE,
                                    digital::trellis_metric_type_t TYPE,
                                    const Ti *in, To *out);

    void siso_algorithm(int I, int S, int O,
                        const std::vector<int> &NS,
                        const std::vector<int> &OS,
                        const std::vector< std::vector<int> > &PS,
                        const std::vector< std::vector<int> > &PI,
                        int K,
                        int S0,int SK,
                        bool POSTI, bool POSTO,
                        float (*p2mymin)(float,float),
                        const float *priori, const float *prioro, float *post);

    template <class T>
    void siso_algorithm_combined(int I, int S, int O,
                                 const std::vector<int> &NS,
                                 const std::vector<int> &OS,
                                 const std::vector< std::vector<int> > &PS,
                                 const std::vector< std::vector<int> > &PI,
                                 int K,
                                 int S0,int SK,
                                 bool POSTI, bool POSTO,
                                 float (*p2mymin)(float,float),
                                 int D,
                                 const std::vector<T> &TABLE,
                                 digital::trellis_metric_type_t TYPE,
                                 const float *priori, const T *observations, float *post);

    template<class T>
    void sccc_decoder(const fsm &FSMo, int STo0, int SToK,
                      const fsm &FSMi, int STi0, int STiK,
                      const interleaver &INTERLEAVER, int blocklength, int iterations,
                      float (*p2mymin)(float,float),
                      const float *iprioro, T *data);

    template<class Ti, class To>
    void sccc_decoder_combined(const fsm &FSMo, int STo0, int SToK,
                               const fsm &FSMi, int STi0, int STiK,
                               const interleaver &INTERLEAVER, int blocklength, int iterations,
                               float (*p2mymin)(float,float),
                               int D, const std::vector<Ti> &TABLE,
                               digital::trellis_metric_type_t METRIC_TYPE,
                               float scaling,
                               const Ti *observations, To *data);

    template<class T>
    void pccc_decoder(const fsm &FSM1, int ST10, int ST1K,
                      const fsm &FSM2, int ST20, int ST2K,
                      const interleaver &INTERLEAVER, int blocklength, int iterations,
                      float (*p2mymin)(float,float),
                      const float *cprioro, T *data);

    template<class Ti, class To>
    void pccc_decoder_combined(const fsm &FSM1, int ST10, int ST1K,
                               const fsm &FSM2, int ST20, int ST2K,
                               const interleaver &INTERLEAVER, int blocklength, int iterations,
                               float (*p2mymin)(float,float),
                               int D, const std::vector<Ti> &TABLE,
                               digital::trellis_metric_type_t METRIC_TYPE,
                               float scaling,
                               const Ti *observations, To *data);

  } /* namespace trellis */
} /* namespace gr */

#endif /* INCLUDED_CORE_ALGORITHMS_H */