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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⚡ 517.43 ms
Construct the short length of QC LDPC codes without girth 4 and girth 6
Construct the short length of QC LDPC codes without girth 4 and girth 6
Flexible construction of girth-six QC-LDPC Codes
constructs girth-six column-weight three QC-LDPC codes
The program can count the number of the girth 4 of LDPC codes.
SMC takes a state machine stored in a .sm file and generates a State pattern in twelve programming languages. Includes: default transitions, transition args, transition guards...
摘 要：对于围长(girth)至少为8的低密度奇偶校验(LDPC)码，目前的绝大多数构造方法都需要借助于计算机搜索。受贪婪构造算法启发，该文利用完全确定的方式构造出一类围长为8的 (3,L)−规则QC-LDPC码。这类QC-LDPC码的校验矩阵由3×L 个P ×P 的循环置换矩阵构成。对于任意整数P ≥ 3L2 / 4 ，这类校验矩阵的围长均为8。