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<h1>gr_cma_equalizer_cc.h</h1>  </div>
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<a href="gr__cma__equalizer__cc_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- c++ -*- */</span>
<a name="l00002"></a>00002 <span class="comment">/*</span>
<a name="l00003"></a>00003 <span class="comment"> * Copyright 2006 Free Software Foundation, Inc.</span>
<a name="l00004"></a>00004 <span class="comment"> * </span>
<a name="l00005"></a>00005 <span class="comment"> * This file is part of GNU Radio</span>
<a name="l00006"></a>00006 <span class="comment"> * </span>
<a name="l00007"></a>00007 <span class="comment"> * GNU Radio is free software; you can redistribute it and/or modify</span>
<a name="l00008"></a>00008 <span class="comment"> * it under the terms of the GNU General Public License as published by</span>
<a name="l00009"></a>00009 <span class="comment"> * the Free Software Foundation; either version 3, or (at your option)</span>
<a name="l00010"></a>00010 <span class="comment"> * any later version.</span>
<a name="l00011"></a>00011 <span class="comment"> * </span>
<a name="l00012"></a>00012 <span class="comment"> * GNU Radio is distributed in the hope that it will be useful,</span>
<a name="l00013"></a>00013 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00014"></a>00014 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
<a name="l00015"></a>00015 <span class="comment"> * GNU General Public License for more details.</span>
<a name="l00016"></a>00016 <span class="comment"> * </span>
<a name="l00017"></a>00017 <span class="comment"> * You should have received a copy of the GNU General Public License</span>
<a name="l00018"></a>00018 <span class="comment"> * along with GNU Radio; see the file COPYING.  If not, write to</span>
<a name="l00019"></a>00019 <span class="comment"> * the Free Software Foundation, Inc., 51 Franklin Street,</span>
<a name="l00020"></a>00020 <span class="comment"> * Boston, MA 02110-1301, USA.</span>
<a name="l00021"></a>00021 <span class="comment"> */</span>
<a name="l00022"></a>00022 
<a name="l00023"></a>00023 <span class="preprocessor">#ifndef INCLUDED_GR_CMA_EQUALIZER_CC_H</span>
<a name="l00024"></a>00024 <span class="preprocessor"></span><span class="preprocessor">#define INCLUDED_GR_CMA_EQUALIZER_CC_H</span>
<a name="l00025"></a>00025 <span class="preprocessor"></span>
<a name="l00026"></a>00026 <span class="preprocessor">#include &lt;<a class="code" href="gr__adaptive__fir__ccf_8h.html">gr_adaptive_fir_ccf.h</a>&gt;</span>
<a name="l00027"></a>00027 
<a name="l00028"></a>00028 <span class="keyword">class </span><a class="code" href="classgr__cma__equalizer__cc.html" title="Implements constant modulus adaptive filter on complex stream.">gr_cma_equalizer_cc</a>;
<a name="l00029"></a>00029 <span class="keyword">typedef</span> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">boost::shared_ptr&lt;gr_cma_equalizer_cc&gt;</a> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">gr_cma_equalizer_cc_sptr</a>;
<a name="l00030"></a>00030 
<a name="l00031"></a>00031 <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">gr_cma_equalizer_cc_sptr</a> 
<a name="l00032"></a>00032 <a class="code" href="gr__cma__equalizer__cc_8h.html#a8e297d067f1f303980334c2f458a1655">gr_make_cma_equalizer_cc</a>(<span class="keywordtype">int</span> num_taps, <span class="keywordtype">float</span> modulus, <span class="keywordtype">float</span> mu);
<a name="l00033"></a>00033 <span class="comment"></span>
<a name="l00034"></a>00034 <span class="comment">/*!</span>
<a name="l00035"></a>00035 <span class="comment"> * \brief Implements constant modulus adaptive filter on complex stream</span>
<a name="l00036"></a>00036 <span class="comment"> * \ingroup eq_blk</span>
<a name="l00037"></a>00037 <span class="comment"> */</span>
<a name="l00038"></a><a class="code" href="classgr__cma__equalizer__cc.html">00038</a> <span class="keyword">class </span><a class="code" href="classgr__cma__equalizer__cc.html" title="Implements constant modulus adaptive filter on complex stream.">gr_cma_equalizer_cc</a> : <span class="keyword">public</span> <a class="code" href="classgr__adaptive__fir__ccf.html" title="Adaptive FIR filter with gr_complex input, gr_complex output and float taps.">gr_adaptive_fir_ccf</a>
<a name="l00039"></a>00039 {
<a name="l00040"></a>00040 <span class="keyword">private</span>:
<a name="l00041"></a>00041   <span class="keywordtype">float</span> d_modulus;
<a name="l00042"></a>00042   <span class="keywordtype">float</span> d_mu;
<a name="l00043"></a>00043   
<a name="l00044"></a>00044   <span class="keyword">friend</span> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">gr_cma_equalizer_cc_sptr</a> <a class="code" href="classgr__cma__equalizer__cc.html#a8e297d067f1f303980334c2f458a1655">gr_make_cma_equalizer_cc</a>(<span class="keywordtype">int</span> num_taps, <span class="keywordtype">float</span> modulus, <span class="keywordtype">float</span> mu);
<a name="l00045"></a>00045   <a class="code" href="classgr__cma__equalizer__cc.html" title="Implements constant modulus adaptive filter on complex stream.">gr_cma_equalizer_cc</a>(<span class="keywordtype">int</span> num_taps, <span class="keywordtype">float</span> modulus, <span class="keywordtype">float</span> mu);
<a name="l00046"></a>00046 
<a name="l00047"></a>00047 <span class="keyword">protected</span>:
<a name="l00048"></a>00048 
<a name="l00049"></a><a class="code" href="classgr__cma__equalizer__cc.html#a18b38db1177078439dc121ccef960b4f">00049</a>   <span class="keyword">virtual</span> <span class="keywordtype">float</span> <a class="code" href="classgr__cma__equalizer__cc.html#a18b38db1177078439dc121ccef960b4f">error</a>(<span class="keyword">const</span> <a class="code" href="gr__complex_8h.html#aec4bfe41433369afae9327f1b0bc9109">gr_complex</a> &amp;out) 
<a name="l00050"></a>00050   { 
<a name="l00051"></a>00051     <span class="keywordflow">return</span> (d_modulus - norm(out)); 
<a name="l00052"></a>00052   }
<a name="l00053"></a>00053 
<a name="l00054"></a><a class="code" href="classgr__cma__equalizer__cc.html#ab6e09ce0a3d190d05da1e5d736ff7113">00054</a>   <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classgr__cma__equalizer__cc.html#ab6e09ce0a3d190d05da1e5d736ff7113">update_tap</a>(<span class="keywordtype">float</span> &amp;tap, <span class="keyword">const</span> <a class="code" href="gr__complex_8h.html#aec4bfe41433369afae9327f1b0bc9109">gr_complex</a> &amp;in) 
<a name="l00055"></a>00055   {
<a name="l00056"></a>00056     tap += d_mu*<a class="code" href="classgr__adaptive__fir__ccf.html#acb8212e9fd8cf32c7a48c96cf0600da2">d_error</a>*abs(in);
<a name="l00057"></a>00057   }
<a name="l00058"></a>00058   
<a name="l00059"></a>00059 <span class="keyword">public</span>:
<a name="l00060"></a>00060 };
<a name="l00061"></a>00061 
<a name="l00062"></a>00062 <span class="preprocessor">#endif</span>
</pre></div></div>
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