GNU Radio 3.7.1 C++ API
diff_phasor_cc.h
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00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2006,2012 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_GR_DIFF_PHASOR_CC_H
00024 #define INCLUDED_GR_DIFF_PHASOR_CC_H
00025 
00026 #include <gnuradio/digital/api.h>
00027 #include <gnuradio/sync_block.h>
00028 
00029 namespace gr {
00030   namespace digital {
00031 
00032     /*!
00033      * \brief Differential decoding based on phase change.
00034      * \ingroup symbol_coding_blk
00035      *
00036      * \details
00037      * Uses the phase difference between two symbols to determine the
00038      * output symbol:
00039      *
00040      *     out[i] = in[i] * conj(in[i-1]);
00041      */
00042     class DIGITAL_API diff_phasor_cc : virtual public sync_block
00043     {
00044     public:
00045       // gr::digital::diff_phasor_cc::sptr
00046       typedef boost::shared_ptr<diff_phasor_cc> sptr;
00047 
00048       /*!
00049        * Make a differential phasor decoding block.
00050        */
00051       static sptr make();
00052     };
00053 
00054   } /* namespace digital */
00055 } /* namespace gr */
00056 
00057 #endif /* INCLUDED_GR_DIFF_PHASOR_CC_H */