GNU Radio Manual and C++ API Reference  3.7.9.2
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diff_decoder_bb.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 2006,2012 Free Software Foundation, Inc.
4  *
5  * This file is part of GNU Radio
6  *
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)
10  * any later version.
11  *
12  * GNU Radio is distributed in the hope that it will be useful,
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.
16  *
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,
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21  */
22 
23 #ifndef INCLUDED_GR_DIFF_DECODER_BB_H
24 #define INCLUDED_GR_DIFF_DECODER_BB_H
25 
26 #include <gnuradio/digital/api.h>
27 #include <gnuradio/sync_block.h>
28 
29 namespace gr {
30  namespace digital {
31 
32  /*!
33  * \brief Differential encoder: y[0] = (x[0] - x[-1]) % M
34  * \ingroup symbol_coding_blk
35  *
36  * \details
37  * Uses current and previous symbols and the alphabet modulus to
38  * perform differential decoding.
39  */
40  class DIGITAL_API diff_decoder_bb : virtual public sync_block
41  {
42  public:
43  // gr::digital::diff_decoder_bb::sptr
44  typedef boost::shared_ptr<diff_decoder_bb> sptr;
45 
46  /*!
47  * Make a differntial decoder block.
48  *
49  * \param modulus Modulus of code's alphabet
50  */
51  static sptr make(unsigned int modulus);
52  };
53 
54  } /* namespace digital */
55 } /* namespace gr */
56 
57 #endif /* INCLUDED_GR_DIFF_DECODER_BB_H */
#define DIGITAL_API
Definition: gr-digital/include/gnuradio/digital/api.h:30
boost::shared_ptr< diff_decoder_bb > sptr
Definition: diff_decoder_bb.h:44
Include this header to use the message passing features.
Definition: logger.h:131
synchronous 1:1 input to output with historyOverride work to provide the signal processing implementa...
Definition: sync_block.h:37
Differential encoder: y[0] = (x[0] - x[-1]) % M.
Definition: diff_decoder_bb.h:40