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搜索资源 - LDPC PARITY CHECK MATRIX
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LDPC码是Low Density Parity-check Codes的缩写,一个长为N的LDPC码由它的校验矩阵H来定义,该矩阵的特点是其中的元素0特别多,1特别少——即所谓的“低密度”。一个参数为(N,i,j)的H表示该矩阵中每列有i个1,每行有j个1,矩阵大小为N×K,N代表码字长度,K代表校验子的个数。
-LDPC code is the ab. of Low Density Parity-check Codes. A Length N LDPC is defined by its
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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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提出了一种码率码长灵活变化的准循环低密度奇偶校验(Quasi - Cyclic Low Density
Parity Check, QC - LDPC)码,利用构造出的H 矩阵可以达到较大的圈长( girth)值,并能在
girth值不变的前提下实现码率码长的灵活变化-Puts forward a bit rate code length of flexible change must circulation Low Density parity (Quasi-Cyclic Low De
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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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parity check matrix in the LDPC code
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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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The zip file contains
1. A 128x256 Regular (3,6) H matrix (if you need to simulate other codes, need to write your own code for generating those parity check matrices). The file 128x256regular_v6.mat is for those using Matlab 6.5.
2. Files for
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This matlab code can be used to generate a parity check matrix for the LDPC code and further encoded and decoded in a complete communication system.
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中国数字地面电视标准中的LDPC码校验矩阵转换为Neal的pchk格式的校验矩阵-China digital terrestrial television standard LDPC code parity check matrix matrix Neal converted to the format of pchk
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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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在matlab环境下,构造LDPC码的校验矩阵的各种方法,包括Gallager构造法,Mackay构造法,PEG构造法,对以后的编译码算法有很大的帮助。-In the matlab environment, various methods LDPC code parity check matrix structure, including Gallager construction law, Mackay construction law, PEG construction method, af
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ldpc codes are low dencity paRity checking matrix to check the parity on matrix based g and h algorithm based on algorithm matrix input will be added to this code
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完整的ldpc编码程序,实现数字载体的ldpc编码译码以及信道传输仿真,利用生成矩阵和校验矩阵实现,含有自动生成随机错误以检测纠错能力功能-Ldpc complete coding procedures, digital carrier ldpc codec and channel transmission simulation using the generator matrix and parity check matrix realization, containing automatic
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一种新型的建筑不规则低密度
奇偶检验基于所述修改(LDPC)码
渐进边增长(PEG)的算法。边缘
所述PEG算法的位置是由利用所述Sum-增强
积算法在奇偶校验矩阵的设计。该
提出的算法是在块长度和速度非常灵活。
被提议的方法构建代码的测试
AWGN信道和显著的性能改进
实现。建议解码器优化的灵活性
动作,然后由它的使用在修改所述改进的示
PEGIPEGI)算法来实现进一步的性能提升。-A novel construction for irregular
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File is used for counting short cycle of ldpc codes. You must give parity check matrix of ldpc code in text file and then use cycle count file of matlab for counting of short cycle of given length.
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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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In this paper, we are concerned with developing a common
implementation architecture for both turbo codes and LDPC
codes. We view the constituent convolutional code in a turbo
code as a block code, and construct a sparse parity check
matrix for i
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