Title :
Construction of quasi cyclic LDPC with ACE constraint
Author :
Li, Jilong ; Di, Na ; Yang, Ming ; Wu, Zhiyong
Author_Institution :
Wireless Technol. Inst., Acad. of Broadcasting Sci., Beijing, China
Abstract :
In this paper, LDPC code structure and decoder implementation is reviewed. The effect of graph connectivity on LDPC performance is analyzed. The metric of ACE (approximate cycle EMD) in code construction avoids small trapping sets by emphasizing the connectivity. A construction algorithm with ACE constraint is proposed which maximize the girth and stopping sets in a best effort way. Simulation results justify the efficiency of the algorithm.
Keywords :
Additive white noise; Broadcast technology; Broadcasting; Degradation; Delay; Hardware; Iterative algorithms; Iterative decoding; Parity check codes; Throughput; ACE; QC-LDPC; stopping set;
Conference_Titel :
Wireless Communications, Networking and Information Security (WCNIS), 2010 IEEE International Conference on
Conference_Location :
Beijing, China
Print_ISBN :
978-1-4244-5850-9
DOI :
10.1109/WCINS.2010.5541895
