搜索资源列表
LDPC_GirthTest
- 检查LDPC校验矩阵H中是否含有长为4的环,用matlab语言实现。
LDPCBSN
- 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.
makeLdpc
- 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
cycle test algrithm
- 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
bipartite8_type2
- 本程序是围长为8的QC-LDPC码设计,包括了4、6、8环的检测-This program is the girth of 8 QC-LDPC code design, including the detection of 4,6,8 ring
LDPC_Girth4-Test
- 检查LDPC 的围长是否超过4, Matlab code-LDPC Girth-4 test, Matlab code
girth84rr
- 构造围长8列重4的准循环的LDPC码的MATLAB源码-constructs girth-eight column-weight four LDPC codes Coding and Information Theory. girth-eight, QC-LDPC Codes
qc_ldpc-4-4-cycle-test
- ldpc 低密度奇偶校验矩阵 4环、6环检测程序-ldpc 4/6cycle test program
girth63rr
- qc-ldpc码编程,围长为6,列重为3,无4环-The algorithm divides rows into three equal groups. The rows are then connnected to form a distance graph which is then transformed in to a matrix. Girth of six is maintained by avoiding four-cycles. No two rows are connected
girth83rr
- QC-LDPC码编程,围长为8,列重为3,无4环-The program contructs column-weight three girth-eight QC-LPDC codes given row-weight and sub-matrix size. row-weights and sub-matrices sizes are variable.
girth12rr
- QC-LDPC码生成矩阵编程,围长为12,无4环-The program searches for a girth 12 QC-LDPC code given size of sub-matrix, row and column weights. The configuration of sub-matrices could also be changed. The program offers flexibility in constructing girth-12 QC-LDPC codes
ldpc-decoding
- 4种LDPC的译码算法比较,经测试可以运行。-4 kinds different ldpc decoding algorithm-nomalized/offset/MS and SP
4-ary-LDPC
- 4-ary LDPC matlab code
AC-LDPC(4-k)
- 使用matlab编程的的LDPC译码实现,M文件,在matlab平台运行。-LDPC_DECODE POROGRAM
Parity-check--matrix--construct-of-Gallager-LDPC-
- 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
LDPC
- QC-LDPC信道编码matlab仿真程序,包含生成矩阵G,查找环长度4是否存在等功能-QC-LDPC chanel coding, include G,H generate tools,and find loop 4
genH
- matlab生成LDPC的H矩阵,消除4环,同时列重为3,很好的例子-based matlab generate H matrix of ldpc
recursive
- 迭代生成LDPC码矩阵,初始矩阵为三行三列各元素均为1的矩阵。根据其tranner图依次迭代产生新的矩阵。-structural properties: (1)Each line is composed of p points (2)There is one and only one line between any two points (3)Each point lies on b lines (4)Any pair of lines has at most one c
BP
- LDPC编码中的BP算法,已知校验阵H,先验证是否有4环,并实现随机生成信息序列编码并解码。-BP LDPC coding algorithm, known check matrix H, first verify whether there are four rings, and to achieve a randomly generated sequence information encoding and decoding.
LDPC码编译码算法的研究与实现_李会雅
- 本文首先介绍了几种LDPC码的编译码算法,同时推导了译码错误概率和密度进化 过程,讨论了信道参数的门限效应。接着对LDPC码二分图中长度为4的环进行了深入 研究,提出了一种LDPC码校验矩阵的消4一环生成算法,采用Matlab和VC++融合编程 方式,完成了此算法的程序设计。此算法不仅可生成二进制LDPC码的校验矩阵,并且 对算法修正后,也可生成多进制LDPC码的校验矩阵。采用此算法后可避免LDPC码译 码过程中的重复迭代,显著提高了短帧LDPC码的误比特率性能。同时对不同参数对 L
