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65<h1>bch.h</h1><a href="bch_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001
66<a name="l00029"></a>00029 <span class="preprocessor">#ifndef BCH_H</span>
67<a name="l00030"></a>00030 <span class="preprocessor"></span><span class="preprocessor">#define BCH_H</span>
68<a name="l00031"></a>00031 <span class="preprocessor"></span>
69<a name="l00032"></a>00032 <span class="preprocessor">#include &lt;<a class="code" href="galois_8h.html" title="Definitions of Galois Field algebra classes and functions.">itpp/comm/galois.h</a>&gt;</span>
70<a name="l00033"></a>00033 <span class="preprocessor">#include &lt;<a class="code" href="channel__code_8h.html" title="Channel Code class virtual interface.">itpp/comm/channel_code.h</a>&gt;</span>
71<a name="l00034"></a>00034
72<a name="l00035"></a>00035
73<a name="l00036"></a>00036 <span class="keyword">namespace </span>itpp
74<a name="l00037"></a>00037 {
75<a name="l00038"></a>00038
76<a name="l00043"></a>00043 <span class="comment">//---------------------- BCH --------------------------------------</span>
77<a name="l00044"></a>00044
78<a name="l00059"></a><a class="code" href="classitpp_1_1BCH.html">00059</a> <span class="keyword">class </span><a class="code" href="classitpp_1_1BCH.html" title="Class for binary, narrow-sense BCH codes.">BCH</a> : <span class="keyword">public</span> <a class="code" href="classitpp_1_1Channel__Code.html" title="Generic Channel Code class.">Channel_Code</a>
79<a name="l00060"></a>00060 {
80<a name="l00061"></a>00061 <span class="keyword">public</span>:
81<a name="l00069"></a>00069   <a class="code" href="classitpp_1_1BCH.html#b14976a274da9579b652f3ac6aa1c9a0" title="Initialize a (n,k)-code that can correct t errors.">BCH</a>(<span class="keywordtype">int</span> in_n, <span class="keywordtype">int</span> in_k, <span class="keywordtype">int</span> in_t, <span class="keyword">const</span> ivec &amp;genpolynom, <span class="keywordtype">bool</span> sys = <span class="keyword">false</span>);
82<a name="l00070"></a>00070
83<a name="l00082"></a>00082   <a class="code" href="classitpp_1_1BCH.html#b14976a274da9579b652f3ac6aa1c9a0" title="Initialize a (n,k)-code that can correct t errors.">BCH</a>(<span class="keywordtype">int</span> in_n, <span class="keywordtype">int</span> in_t, <span class="keywordtype">bool</span> sys = <span class="keyword">false</span>);
84<a name="l00083"></a>00083
85<a name="l00085"></a><a class="code" href="classitpp_1_1BCH.html#c2d5fcdd62fba4073d506abe31c480cd">00085</a>   <span class="keyword">virtual</span> <a class="code" href="classitpp_1_1BCH.html#c2d5fcdd62fba4073d506abe31c480cd" title="Destructor.">~BCH</a>() { }
86<a name="l00086"></a>00086
87<a name="l00088"></a>00088   <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classitpp_1_1BCH.html#d4afca904108624cff06356b084ed0d0" title="Encode a bvec of indata.">encode</a>(<span class="keyword">const</span> bvec &amp;uncoded_bits, bvec &amp;coded_bits);
88<a name="l00090"></a>00090   <span class="keyword">virtual</span> bvec <a class="code" href="classitpp_1_1BCH.html#d4afca904108624cff06356b084ed0d0" title="Encode a bvec of indata.">encode</a>(<span class="keyword">const</span> bvec &amp;uncoded_bits);
89<a name="l00091"></a>00091
90<a name="l00093"></a>00093   <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classitpp_1_1BCH.html#4bd690a4d1751a153c7be314b56e8fc5" title="Decode a bvec of coded data.">decode</a>(<span class="keyword">const</span> bvec &amp;coded_bits, bvec &amp;decoded_bits);
91<a name="l00095"></a>00095   <span class="keyword">virtual</span> bvec <a class="code" href="classitpp_1_1BCH.html#4bd690a4d1751a153c7be314b56e8fc5" title="Decode a bvec of coded data.">decode</a>(<span class="keyword">const</span> bvec &amp;coded_bits);
92<a name="l00096"></a>00096
93<a name="l00097"></a>00097   <span class="comment">// Soft-decision decoding is not implemented</span>
94<a name="l00098"></a>00098   <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classitpp_1_1BCH.html#4bd690a4d1751a153c7be314b56e8fc5" title="Decode a bvec of coded data.">decode</a>(<span class="keyword">const</span> vec &amp;received_signal, bvec &amp;output);
95<a name="l00099"></a>00099   <span class="keyword">virtual</span> bvec <a class="code" href="classitpp_1_1BCH.html#4bd690a4d1751a153c7be314b56e8fc5" title="Decode a bvec of coded data.">decode</a>(<span class="keyword">const</span> vec &amp;received_signal);
96<a name="l00100"></a>00100
97<a name="l00102"></a><a class="code" href="classitpp_1_1BCH.html#d3657677fbec25d3b69c6cca880371de">00102</a>   <span class="keyword">virtual</span> <span class="keywordtype">double</span> <a class="code" href="classitpp_1_1BCH.html#d3657677fbec25d3b69c6cca880371de" title="Get the code rate.">get_rate</a>()<span class="keyword"> const </span>{<span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span><span class="keywordtype">double</span><span class="keyword">&gt;</span>(k) / n; }
98<a name="l00103"></a>00103
99<a name="l00105"></a><a class="code" href="classitpp_1_1BCH.html#b881817c1fc0d43c5c4f04c1185bcd5f">00105</a>   <span class="keyword">virtual</span> <span class="keywordtype">int</span> <a class="code" href="classitpp_1_1BCH.html#b881817c1fc0d43c5c4f04c1185bcd5f" title="Get cardinality of code k.">get_k</a>()<span class="keyword"> const </span>{<span class="keywordflow">return</span> k; }
100<a name="l00106"></a>00106
101<a name="l00108"></a><a class="code" href="classitpp_1_1BCH.html#4583f345d7bca5ea8fb58ca78dc5519c">00108</a>   <a class="code" href="classitpp_1_1BCH.html" title="Class for binary, narrow-sense BCH codes.">BCH</a> &amp; <a class="code" href="classitpp_1_1BCH.html#4583f345d7bca5ea8fb58ca78dc5519c" title="Dummy assignment operator - MSVC++ warning C4512.">operator=</a>(<span class="keyword">const</span> <a class="code" href="classitpp_1_1BCH.html" title="Class for binary, narrow-sense BCH codes.">BCH</a> &amp;) { <span class="keywordflow">return</span> *<span class="keyword">this</span>; }
102<a name="l00109"></a>00109
103<a name="l00110"></a>00110 <span class="keyword">private</span>:
104<a name="l00111"></a>00111   <span class="keywordtype">int</span> n, k, t;
105<a name="l00112"></a>00112   <a class="code" href="classitpp_1_1GFX.html" title="Polynomials over GF(q)[x], where q=2^m, m=1,...,16.">GFX</a> g;
106<a name="l00113"></a>00113   <span class="keyword">const</span> <span class="keywordtype">bool</span> systematic;
107<a name="l00114"></a>00114 };
108<a name="l00115"></a>00115
109<a name="l00116"></a>00116 } <span class="comment">// namespace itpp</span>
110<a name="l00117"></a>00117
111<a name="l00118"></a>00118 <span class="preprocessor">#endif // #ifndef BCH_H</span>
112</pre></div></div>
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