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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
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
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.
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
354137
- Design LDPC Codes without Cycles of Length 4 and 6
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
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
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