搜索资源列表
peg
- 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.
LDPC_encoder
- 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
LDPCcode
- 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
MadHG
- 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
HGrandom2
- 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 ri
gallager1_data_1008_1_2
- 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
ldpc_all_new
- 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
Girth
- 这个程序主要是计算图形的面积先将图像转化为二值图像然后计算图像的面积
degree_calculate
- 已知LDPC码的稀疏交验矩阵H，计算girth和local girth
girth
- 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
pi
- 计算PI(圆周率)的程序，可以计算２的Ｎ次幂的精确度- Calculates PI (girth quotient) the procedure, may calculate 2 N power the precision
ConstructQCLDPCgirth4
- Construct the short length of QC LDPC codes without girth 4 and girth 6
Girth-twelveQC-LDPC
- 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).
constructsgirth-sixQC-LDPC
- constructs girth-six column-weight three QC-LDPC codes
Girth-eightQC-LDPC
- 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
Girth-8QCL-PDC
- 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
girth4_count
- The program can count the number of the girth 4 of LDPC codes.
girth6_shifter
- 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
QC_codes
- 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.
cycle_search
- 本程序是用来查找LDPC parity-check matrix中的cycle的. 以次可以方便知道girth 的情况.-This program is used to find all the cycles in the parity-check matrix of the LDPC codes. By using this program we can also know the girth condition of our codes.