doc/doxygen-3.3.0/trellis__siso__f_8h_source.html

00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2004 Free Software Foundation, Inc.
00004  *
00005  * This file is part of GNU Radio
00006  *
00007  * GNU Radio is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 3, or (at your option)
00010  * any later version.
00011  *
00012  * GNU Radio is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU General Public License
00018  * along with GNU Radio; see the file COPYING.  If not, write to
00019  * the Free Software Foundation, Inc., 51 Franklin Street,
00020  * Boston, MA 02110-1301, USA.
00021  */
00022
00023 #ifndef INCLUDED_TRELLIS_SISO_F_H
00024 #define INCLUDED_TRELLIS_SISO_F_H
00025
00026 #include "fsm.h"
00027 #include "trellis_siso_type.h"
00028 #include <gr_block.h>
00029
00030 class trellis_siso_f;
00031 typedef boost::shared_ptr<trellis_siso_f> trellis_siso_f_sptr;
00032
00033 trellis_siso_f_sptr trellis_make_siso_f (
00034     const fsm &FSM,     // underlying FSM
00035     int K,              // block size in trellis steps
00036     int S0,             // initial state (put -1 if not specified)
00037     int SK,             // final state (put -1 if not specified)
00038     bool POSTI,         // true if you want a-posteriori info about the input symbols to be mux-ed in the output
00039     bool POSTO,         // true if you want a-posteriori info about the output symbols to be mux-ed in the output
00040     trellis_siso_type_t d_SISO_TYPE // perform "min-sum" or "sum-product" combining
00041 );
00042
00043
00044 /*!
00045  *  \ingroup coding_blk
00046  */
00047 class trellis_siso_f : public gr_block
00048 {
00049   fsm d_FSM;
00050   int d_K;
00051   int d_S0;
00052   int d_SK;
00053   bool d_POSTI;
00054   bool d_POSTO;
00055   trellis_siso_type_t d_SISO_TYPE;
00056   //std::vector<float> d_alpha;
00057   //std::vector<float> d_beta;
00058
00059   friend trellis_siso_f_sptr trellis_make_siso_f (
00060     const fsm &FSM,
00061     int K,
00062     int S0,
00063     int SK,
00064     bool POSTI,
00065     bool POSTO,
00066     trellis_siso_type_t d_SISO_TYPE);
00067
00068
00069   trellis_siso_f (
00070     const fsm &FSM,
00071     int K,
00072     int S0,
00073     int SK,
00074     bool POSTI,
00075     bool POSTO,
00076     trellis_siso_type_t d_SISO_TYPE);
00077
00078
00079 public:
00080   fsm FSM () const { return d_FSM; }
00081   int K () const { return d_K; }
00082   int S0 () const { return d_S0; }
00083   int SK () const { return d_SK; }
00084   bool POSTI () const { return d_POSTI; }
00085   bool POSTO () const { return d_POSTO; }
00086   trellis_siso_type_t SISO_TYPE () const { return d_SISO_TYPE; }
00087   void forecast (int noutput_items,
00088                  gr_vector_int &ninput_items_required);
00089   int general_work (int noutput_items,
00090                     gr_vector_int &ninput_items,
00091                     gr_vector_const_void_star &input_items,
00092                     gr_vector_void_star &output_items);
00093 };
00094
00095 #endif