Cooperative optimization and their application in LDPC codes

Ke Chen; Jian Rong; Xiaochun Zhong

doi:10.1117/12.821234

12 January 2009 Cooperative optimization and their application in LDPC codes

Ke Chen, Jian Rong, Xiaochun Zhong

Proceedings Volume 7133, Fifth International Symposium on Instrumentation Science and Technology; 713329 (2009) https://doi.org/10.1117/12.821234
Event: International Symposium on Instrumentation Science and Technology, 2008, Shenyang, China

Abstract

Cooperative optimization is a new way for finding global optima of complicated functions of many variables. The proposed algorithm is a class of message passing algorithms and has solid theory foundations. It can achieve good coding gains over the sum-product algorithm for LDPC codes. For (6561, 4096) LDPC codes, the proposed algorithm can achieve 2.0 dB gains over the sum-product algorithm at BER of 4×10-7. The decoding complexity of the proposed algorithm is lower than the sum-product algorithm can do; furthermore, the former can achieve much lower error floor than the latter can do after the Eb / No is higher than 1.8 dB.

Citation Download Citation

Ke Chen, Jian Rong, and Xiaochun Zhong "Cooperative optimization and their application in LDPC codes", Proc. SPIE 7133, Fifth International Symposium on Instrumentation Science and Technology, 713329 (12 January 2009); https://doi.org/10.1117/12.821234

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