GNU Radio Manual and C++ API Reference  3.7.9.2
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decode_ccsds_27_fb.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 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
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10  * any later version.
11  *
12  * GNU Radio is distributed in the hope that it will be useful,
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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_FEC_DECODE_CCSDS_27_FB_H
24 #define INCLUDED_FEC_DECODE_CCSDS_27_FB_H
25 
26 #include <gnuradio/fec/api.h>
28 
29 namespace gr {
30  namespace fec {
31 
32  /*! \brief A rate 1/2, k=7 convolutional decoder for the CCSDS standard
33  * \ingroup error_coding_blk
34  *
35  * \details
36  * This block performs soft-decision convolutional decoding using the Viterbi
37  * algorithm.
38  *
39  * The input is a stream of (possibly noise corrupted) floating point values
40  * nominally spanning [-1.0, 1.0], representing the encoded channel symbols
41  * 0 (-1.0) and 1 (1.0), with erased symbols at 0.0.
42  *
43  * The output is MSB first packed bytes of decoded values.
44  *
45  * As a rate 1/2 code, there will be one output byte for every 16 input symbols.
46  *
47  * This block is designed for continuous data streaming, not packetized data.
48  * The first 32 bits out will be zeroes, with the output delayed four bytes
49  * from the corresponding inputs.
50  */
51 
52  class FEC_API decode_ccsds_27_fb : virtual public sync_decimator
53  {
54  public:
55 
56  // gr::fec::decode_ccsds_27_fb::sptr
57  typedef boost::shared_ptr<decode_ccsds_27_fb> sptr;
58 
59  static sptr make();
60  };
61 
62  } /* namespace fec */
63 } /* namespace gr */
64 
65 #endif /* INCLUDED_FEC_DECODE_CCSDS_27_FB_H */
A rate 1/2, k=7 convolutional decoder for the CCSDS standard.
Definition: decode_ccsds_27_fb.h:52
Include this header to use the message passing features.
Definition: logger.h:131
synchronous N:1 input to output with historyOverride work to provide the signal processing implementa...
Definition: sync_decimator.h:37
#define FEC_API
Definition: gr-fec/include/gnuradio/fec/api.h:30
boost::shared_ptr< decode_ccsds_27_fb > sptr
Definition: decode_ccsds_27_fb.h:57