gr_costas_loop_cc.h

Go to the documentation of this file.
00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2006 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 
00024 #ifndef INCLUDED_GR_COSTAS_LOOP_CC_H
00025 #define INCLUDED_GR_COSTAS_LOOP_CC_H
00026 
00027 #include <gr_sync_block.h>
00028 #include <stdexcept>
00029 #include <fstream>
00030 
00031 
00056 class gr_costas_loop_cc;
00057 typedef boost::shared_ptr<gr_costas_loop_cc> gr_costas_loop_cc_sptr;
00058 
00059 
00060 gr_costas_loop_cc_sptr 
00061 gr_make_costas_loop_cc (float alpha, float beta,
00062                         float max_freq, float min_freq, 
00063                         int order
00064                         ) throw (std::invalid_argument);
00065 
00066 
00077 class gr_costas_loop_cc : public gr_sync_block
00078 {
00079   friend gr_costas_loop_cc_sptr gr_make_costas_loop_cc (float alpha, float beta,
00080                                                         float max_freq, float min_freq, 
00081                                                         int order
00082                                                         ) throw (std::invalid_argument);
00083 
00084   float d_alpha, d_beta, d_max_freq, d_min_freq, d_phase, d_freq;
00085   int d_order;
00086 
00087   gr_costas_loop_cc (float alpha, float beta,
00088                      float max_freq, float min_freq, 
00089                      int order
00090                      ) throw (std::invalid_argument);
00091 
00096   float phase_detector_4(gr_complex sample) const;    // for QPSK
00097 
00102   float phase_detector_2(gr_complex sample) const;    // for BPSK
00103 
00104 
00105   float (gr_costas_loop_cc::*d_phase_detector)(gr_complex sample) const;
00106 
00107 public:
00108 
00112   void set_alpha(float alpha);
00113 
00117   float alpha() const { return d_alpha; }
00118   
00122   void set_beta(float beta);
00123 
00127   float beta() const { return d_beta; }
00128   
00129   int work (int noutput_items,
00130             gr_vector_const_void_star &input_items,
00131             gr_vector_void_star &output_items);
00132 };
00133 
00134 #endif

Generated on Thu Mar 5 09:01:10 2009 for GNU Radio 3.1.3 by  doxygen 1.5.8