3 * Copyright 2004 Free Software Foundation, Inc.
5 * This file is part of GNU Radio
7 * GNU Radio is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3, or (at your option)
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Radio; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street,
20 * Boston, MA 02110-1301, USA.
23 #ifndef INCLUDED_TRELLIS_SISO_COMBINED_F_H
24 #define INCLUDED_TRELLIS_SISO_COMBINED_F_H
27 #include "trellis_siso_type.h"
28 #include "trellis_calc_metric.h"
31 class trellis_siso_combined_f;
32 typedef boost::shared_ptr<trellis_siso_combined_f> trellis_siso_combined_f_sptr;
34 trellis_siso_combined_f_sptr trellis_make_siso_combined_f (
35 const fsm &FSM, // underlying FSM
36 int K, // block size in trellis steps
37 int S0, // initial state (put -1 if not specified)
38 int SK, // final state (put -1 if not specified)
39 bool POSTI, // true if you want a-posteriori info about the input symbols to be mux-ed in the output
40 bool POSTO, // true if you want a-posteriori info about the output symbols to be mux-ed in the output
41 trellis_siso_type_t d_SISO_TYPE, // perform "min-sum" or "sum-product" combining
43 const std::vector<float> &TABLE,
44 trellis_metric_type_t TYPE
49 class trellis_siso_combined_f : public gr_block
57 trellis_siso_type_t d_SISO_TYPE;
59 std::vector<float> d_TABLE;
60 trellis_metric_type_t d_TYPE;
61 //std::vector<float> d_alpha;
62 //std::vector<float> d_beta;
64 friend trellis_siso_combined_f_sptr trellis_make_siso_combined_f (
71 trellis_siso_type_t d_SISO_TYPE,
73 const std::vector<float> &TABLE,
74 trellis_metric_type_t TYPE);
77 trellis_siso_combined_f (
84 trellis_siso_type_t d_SISO_TYPE,
86 const std::vector<float> &TABLE,
87 trellis_metric_type_t TYPE);
91 fsm FSM () const { return d_FSM; }
92 int K () const { return d_K; }
93 int S0 () const { return d_S0; }
94 int SK () const { return d_SK; }
95 bool POSTI () const { return d_POSTI; }
96 bool POSTO () const { return d_POSTO; }
97 trellis_siso_type_t SISO_TYPE () const { return d_SISO_TYPE; }
98 int D () const { return d_D; }
99 std::vector<float> TABLE () const { return d_TABLE; }
100 trellis_metric_type_t TYPE () const { return d_TYPE; }
101 void forecast (int noutput_items,
102 gr_vector_int &ninput_items_required);
103 int general_work (int noutput_items,
104 gr_vector_int &ninput_items,
105 gr_vector_const_void_star &input_items,
106 gr_vector_void_star &output_items);