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kurtotic_equalizer_cc.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 2011,2012 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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14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU General Public License for more details.
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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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22 
23 #ifndef INCLUDED_DIGITAL_KURTOTIC_EQUALIZER_CC_H
24 #define INCLUDED_DIGITAL_KURTOTIC_EQUALIZER_CC_H
25 
26 #include <gnuradio/digital/api.h>
28 
29 namespace gr {
30  namespace digital {
31 
32  /*!
33  * \brief Implements a kurtosis-based adaptive equalizer on complex stream
34  * \ingroup equalizers_blk
35  *
36  * \details
37  * Warning: This block does not yet work.
38  *
39  * "Y. Guo, J. Zhao, Y. Sun, "Sign kurtosis maximization based blind
40  * equalization algorithm," IEEE Conf. on Control, Automation,
41  * Robotics and Vision, Vol. 3, Dec. 2004, pp. 2052 - 2057."
42  */
44  virtual public sync_decimator
45  {
46  protected:
47  virtual gr_complex error(const gr_complex &out) = 0;
48  virtual void update_tap(gr_complex &tap, const gr_complex &in) = 0;
49 
50  public:
51  // gr::digital::kurtotic_equalizer_cc::sptr
52  typedef boost::shared_ptr<kurtotic_equalizer_cc> sptr;
53 
54  static sptr make(int num_taps, float mu);
55 
56  virtual float gain() const = 0;
57  virtual void set_gain(float mu) = 0;
58  };
59 
60  } /* namespace digital */
61 } /* namespace gr */
62 
63 #endif /* INCLUDED_DIGITAL_KURTOTIC_EQUALIZER_CC_H */
boost::shared_ptr< kurtotic_equalizer_cc > sptr
Definition: kurtotic_equalizer_cc.h:52
#define DIGITAL_API
Definition: gr-digital/include/gnuradio/digital/api.h:30
Implements a kurtosis-based adaptive equalizer on complex stream.
Definition: kurtotic_equalizer_cc.h:43
std::complex< float > gr_complex
Definition: gr_complex.h:27
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