Title :
On concatenated zigzag codes and their decoding schemes
Author :
Wu, Xiaofu ; Xue, Yingjian ; Xiang, Haige
Author_Institution :
Dept. of Electron., Peking Univ., Beijing, China
Abstract :
In this letter, we show that a concatenated zigzag code can be viewed as a low-density parity-check (LDPC) code. Based on the bipartite graph representation for such a parallel-concatenated code, various sum-product based decoding algorithms are introduced and compared. The results show that the improved versions of sum-product algorithm exhibit better convergence rate while maintaining the essential parallel form.
Keywords :
concatenated codes; decoding; graph theory; parity check codes; product codes; bipartite graph representation; concatenated zigzag code; convergence rate; decoding scheme; low-density parity-check code; parallel-concatenated code; sum-product decoding algorithm; Bipartite graph; Collaborative work; Concatenated codes; Convergence; Iterative decoding; Mobile communication; Parity check codes; Research and development; Sum product algorithm; Turbo codes;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2003.822493
