The program can count the number of the girth 4 of LDPC codes.

本程序可检验所设计的LDPC码中的4环个数。LDPC码中的4环决定LDPC码的解码算法是否能够快速收敛，见程序前言中的参考文献。 LDPC码为高性能信道纠错码，已被DVB-s2和IEEE802.16e采纳。-This procedure can be designed to test the LDPC code in ring number 4. LDPC code of 4 Central decision LDPC code d

这是一个关于LDPC中的GIRTH4-COUNT的代码！- This program can produce the Parity Check Matrices of girth4-count codes, while Ref. remindes you that these codes are not good as the LDPC codes IEEE802.16e for continuous bits errors.

girth4_count LDPC girth4_count LDPC girth4_count LDPC-girth4_count LDPCgirth4_count LDPCgirth4_count LDPCgirth4_count LDPCgirth4_count LDPC