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Description: 用PEG方法生成的围长符合输入要求的规则ldpc码的源程序C语言版。-PEG Generation of Girth accordance with the importation requirements of the source code ldpc C language version.
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Size: 1024 |
Author: 尹浩 |
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Description: gen_H:利用随机pi矩阵排列而成的LDPC稀疏校验矩阵产生；
girthlenth：计算产生的矩阵H的围长-gen_H : pi using random matrix arranged at the LDPC have sparse matrix calibration; girthlenth : calculation of the matrix H Girth
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Size: 2048 |
Author: 喻小星 |
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Description: 用于测试LDPC码校验矩阵围线长度的c++代码，是构造LPDC码教验矩阵的辅助程序-for testing calibration matrix LDPC Wai length of the c code, Construction is the LPDC code inspection procedures auxiliary matrix
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Size: 10240 |
Author: yanxi |
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Description: 利用函数MadHG生成规则LDPC码的校验矩阵H，其行重为6,列重为3,行数为列数一半(行数越大越好)，H中任意两列没有围长为4的圈，并得到H对应的生成矩阵G，可以保证mod(G*H ,2)=0。使用方法为:[H,G] = MadHG(m,n,x),x= 1(得到的G左半部分为单位阵) or 2(G右半部分为单位阵),-use function MadHG Generation rules LDPC check matrix H, re-6, series of three, out for a few half of the number (A bigger the better), H 2 arbitrary no girth of the four circles, H counterparts and with the formation of matrix G, we can be assured of mod (G* H, 2) = 0. To be used : [H, G] = MadHG (m, n, x), x = 1 (the G part of the Left Front units) or 2 (G right half of the units RUF),
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Size: 4096 |
Author: 心海 |
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Description: 利用函数MadHG生成规则LDPC码的校验矩阵H，其行重为6,列重为3,行数为列数一半(行数越大越好)，H中任意两列没有围长为4的圈，并得到H对应的生成矩阵G，可以保证mod(G*H ,2)=0。使用方法为:[H,G] = MadHG(m,n,x),x= 1(得到的G左半部分为单位阵) or 2(G右半部分为单位阵),-use function MadHG Generation rules LDPC check matrix H, re-6, series of three, out for a few half of the number (A bigger the better), H 2 arbitrary no girth of the four circles, H counterparts and with the formation of matrix G, we can be assured of mod (G* H, 2) = 0. To be used : [H, G] = MadHG (m, n, x), x = 1 (the G part of the Left Front units) or 2 (G right half of the units RUF),
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Size: 1024 |
Author: 心海 |
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Description: 生成一个规则LDPC码的教研矩阵H，其行数(越大越好)为列数的一半，行重为6，列重为3，任意两行没有围长为4的圈
使用方法：H=HGrandom2(m,n)。m表示行数，n表示列数-rules of a generation of research LDPC matrix H, its (larger the better) half of the series, re-6, series of three, two arbitrary line is not girth of the ring used four methods : H = HGrandom2 (m, n). Said a few m, n Columns
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Size: 2048 |
Author: 心海 |
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Description: LDPC研究者MacKay提供的校验矩阵H和对应的G，其中H的行重12，列重6，行数504，列数1008，任意两行不含围长为4的圈-LDPC researchers MacKay, the calibration matrix corresponding to the H and G, in which the re-H 12, series 6, a few 504, cited 1008, the two firms were non-arbitrary girth to the ring 4
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Size: 61440 |
Author: 心海 |
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Description: A collection of LDPC(Low-Density Parity-Codes) tools. Including: Code construction Density Evolution Decoding Algorithm Girth average Counter Stopping set and error Floor,etc
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Size: 3072 |
Author: 武博 |
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Description: 已知LDPC码的稀疏交验矩阵H，计算girth和local girth-LDPC codes are known to produce for examination sparse matrix H, the calculation girth and local girth
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Size: 1546240 |
Author: Sam |
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Description: Construct the short length of QC LDPC codes without girth 4 and girth 6
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Size: 1024 |
Author: 古立峰 |
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Description: The program constructs girth-twelve column-weight QC-LPDC codes. The rate can be changed by changing k(row-weight), size is changed by varying m(sub-matrix size).
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Size: 2048 |
Author: 古立峰 |
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Description: constructs girth-six column-weight three QC-LDPC codes
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Size: 1024 |
Author: 古立峰 |
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Description: The algorith divides rows in to four equal groups. The rows are then used to from a distance graph which is then transformed into a matrix. girth of eight is maintained by avoiding six-cycles in the graph construction
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Size: 2048 |
Author: 古立峰 |
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Description: 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
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Size: 2048 |
Author: 古立峰 |
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Description: The program can count the number of the girth 4 of LDPC codes.
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Size: 2048 |
Author: andy |
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Description: 此代码为用比特填充法编写的ldpc码的校验矩阵。它的girth为6，最大行重为8，列重为3-This code with bit-filling method for the preparation of the calibration matrix ldpc code. Its girth is 6, maximum line weight of 8, out of 3 re-
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Size: 1024 |
Author: 谢宁 |
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Description: Flexible construction of girth-six QC-LDPC Codes-The program constructs girth-six QC-LDPC codes given row-weight,k, column-weight,j, and sub-matrix size,m. The obtained parity-check matrix is stored in H. The construction has flexibility in that j,k and m can be varied.The program achieves girth-six by applying the row-column constraint. There are m rows in j submatrices. No two rows should share the same column more than once. This constraint is applied to avoid 4-cycles. The construction has flexibility in that j,k and m can be varied.
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Size: 2048 |
Author: lydia |
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Description: Construct the short length of QC LDPC codes without girth 4 and girth 6-The Program to construct the short length of QC LDPC codes without girth 4 and girth 6
Copyright (C) Yang XIAO, Jun FAN, BJTU, July 26, 2007, E-Mail: yxiao@bjtu.edu.cn.
This program presents an approach [1] for constructing the short length of LDPC codes with girth 8. First, we design 3 submatrices with different shifting functions given by our schemes, then combine them into a matrix according to our approach, finally, expand the matrix into a desired parity-check matrix using identity matrices and cyclic shift matrices of the identity matrices.
The simulation results in AWGN channels show that the codes which can be obtained by the generator matrix derived from this check matrix for encoding the random information bits are as good as random LDPC codes [1].
Ref:
[1] J. Fan, Y. Xiao, “A design of LDPC codes with large girth based on the sub-matrix shifting”, IET International Conference on Wireless Mobile and Multimedia Networks Proceedings (ICWMMN 2006), (CP525), p.
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Size: 2048 |
Author: lydia |
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Description: matlab实现的LDPC编码Tanner图中环的统计算法-matlab achieve Tanner graph of LDPC coding in Central Statistical Algorithm
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Size: 3072 |
Author: 杨友福 |
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Description: LDPC在matlab下的实现。包括误码率仿真，还有girth的求解程序等。在德国求学时候小课题的成果。-the implementation of LDPC in matlab, which includes girth calculation, simulation and so on. The final results of one lab course when i was in Germany.
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Size: 2048 |
Author: bin |
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