Fast encodable and decodable irregular repeat accumulate codes from circulant permutation matrices
Sheng Tong, Shuai Zhang, Baoming Bai, Xingkun Wang · Electronics Letters · 2007
An approach to construct irregular repeat accumulate (RA) codes from circulant permutation matrices is presented. The constructed irregular RA codes can be encoded with shift registers and decoded in the turbo decoding fashion, which leads to a much faster convergence rate compared to the conventional full parallel decoding fashion.