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This LDPC software is intended as an introduction to LDPC codes computer based simulation. The pseudo-random irregular low density parity check matrix is based on Radford M. Neal’s programs collection, which can be found in [1]. While Neal’s collecti
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LDPC码既低密度奇偶校验码（Low Density Parity Check Code，LDPC），它由Robert G.Gallager博士于1963年提出的一类具有稀疏校验矩阵的线性分组码，不仅有逼近Shannon限的良好性能，而且译码复杂度较低, 结构灵活，是近年信道编码领域的研究热点，目前已广泛应用于深空通信、光纤通信、卫星数字视频和音频广播等领域。LDPC码已成为第四代通信系统(4G)
-LDPC codes BER simulation under AWGN channel.
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LDPC编码算法,
Create R = 1/2 low density parity check matrix
M : Number of row
N : Number of column
method : Method for distributing non-zero element
{0} Evencol : For each column, place 1s uniformly at random
{1} Evenboth: For each
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lDPC校验矩阵的环检测。包括4环检测算法，6环检测算法及8环检测算法。还包括一个准循环LDPC奇偶校验矩阵的生成算法。-this algrithm can search cycles in LDPC parity check matrix。It contain cycle-4 cycle-6 cycle-8 test algrithm.It also contains a algrithm for generate the LDPC quasi-cyclic parity check matr
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LDPC(Low-density-parity-check，低密度奇偶校验)码是一类具有稀疏校验矩阵的线性分组码，不仅有逼近Shannon限的良好性能，而且译码复杂度较低，结构灵活，是近年信道编码领域的研究热点-LDPC (Low-density-parity-check, low-density parity check) codes are a class of sparse check matrix of linear block codes, is not only good perfo
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how to construct the parity check matrix for LDPC codes
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This program makes it possible to generate a matrix of parity check LDPC with a constant weight of columns
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from Shortten DVB-S2 LDPC 64800 code into 8100
The program can produce the parity check matrix of DVB-S2 LDPC 64800 with short length code of 8100.
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对低密度校验矩阵的重建算法，LDPC应用在压缩感知中的一种算法-Low density parity check matrix of the reconstruction algorithm of LDPC applications in compression of the perception of an algorithm
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LDPC Encoder and Parity check matrix file for Chinese Digital Tv transmission-LDPC Encoder and Parity check matrix file for Chinese Digital Tv transmission..
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CMMB标准下的LDPC码校验矩阵生成的Matlab程序 4608*9216的矩阵 希望对大家有帮助-CMMB standard LDPC code parity check matrix generated under the the Matlab program 4608* 9216 matrix we hope to help
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CMMB标准下的LDPC码编码程序，利用校验矩阵进行高斯消元 得到生成矩阵-CMMB standard LDPC codes under the program, using the parity check matrix Gaussian elimination generator matrix
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两种不同的方法构造低密度校验编码的校验矩阵，两种方法的复杂度有所不同，适合编码研究的学子们-Two different coding method for constructing low-density parity check matrix, the complexity of the two methods differ for students who study coding
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Ce programme permet de construire des matrices de parité, construites par la méthode de Gallager, de dimensions à faire rentré comme paramètres, avec un poids de ligne et de colonnes a faire rentré en paramètre aussi. Pour avoir des des matrices régu
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This soft decoding algorithm for the sumproduct implementation of the ldpc codoes. The program calculates the log likelihood ratio.
And add them all in the . After running the programme type Eji to fing the final matrix of lg likelyhood ratios.H=L
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Parity check bits is computed using sparse LU decomposition, utilizing sparse matrix properties of H. LDPC code decoding is done using iterative belief propagation or sum-product algorithm (SPA). Four versions of SPA decoder are presented.
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matlab生成LDPC的校验矩阵和生成矩阵-matlab generated LDPC parity check matrix and the generator matrix
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