傅里叶快速算法，DLL可有其他程序调用很好的呀，免费下载，不需账号即可。多多支持。-Fast Fourier algorithm, DLL can call other procedures are very good ah, the free download, can not account. For their support.

Software for Low Density Parity Check Codes Radford M. Neal Version of 2006-02-08. This collection of programs and modules, written in C, is intended to support research and education concerning Low Density Parity Check (LDPC) codes. (Note, however,