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<HTML><HEAD><TITLE> Examples of LDPC Program Usage </TITLE></HEAD><BODY><H1> Examples of LDPC Program Usage </H1><P>Below, are a few command files containing examples of the use ofthe <A HREF="progs.html">LDPC programs</A>, together with the output Iobtained for these examples. Output on other machines mightconceivably be slightly different.<P><A HREF="ex-ham7b">ex-ham7b</A>, output in <A HREF="ex-ham7b.out">ex-ham7b.out</A><BLOCKQUOTE> A (7,4) Hamming code used with a BSC.Demonstrates actual encoding of random messages, and decoding to minimizebit error rate by exhaustive enumeration.</BLOCKQUOTE><P><A HREF="ex-ham7a">ex-ham7a</A>,output in <A HREF="ex-ham7a.out">ex-ham7a.out</A><BLOCKQUOTE> A (4,7) Hamming code used with an AWGN channel. Tested using zero messages.Decoded by exhaustive enumeration to minimize either block or bit error rate,and by probability propagation.</BLOCKQUOTE><P><A HREF="ex-ldpc-encode">ex-ldpc-encode</A>,output in <A HREF="ex-ldpc-encode.out">ex-ldpc-encode.out</A><BLOCKQUOTE> Encodes messages with an LDPC code using sparse, dense, and mixed representations of the generator matrix.</BLOCKQUOTE><P><A HREF="ex-ldpc36-1000a">ex-ldpc36-1000a</A>,output in <A HREF="ex-ldpc36-1000a.out">ex-ldpc36-1000a.out</A><BLOCKQUOTE> A (2000,1000) LDPC code with 3 checks per bit and 6 bits per check. Three encoding methods are tried out, and the code istested on an AWGN channel at various noise levels, using zero messages.</BLOCKQUOTE><P><A HREF="ex-ldpc36-5000a">ex-ldpc36-1000a</A>,output in <A HREF="ex-ldpc36-5000a.out">ex-ldpc36-5000a.out</A><BLOCKQUOTE> A (10000,5000) LDPC code with 3 checks per bit and 6 bits per check. Tested on an AWGN channel at various noise levels, using zero messages.</BLOCKQUOTE><HR><A HREF="index.html">Back to index for LDPC software</A></BODY></HTML>⌨️ 快捷键说明
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