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Proceedings Paper

Cooperative optimization and their application in LDPC codes
Author(s): Ke Chen; Jian Rong; Xiaochun Zhong
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Paper 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.

Paper Details

Date Published: 12 January 2009
PDF: 6 pages
Proc. SPIE 7133, Fifth International Symposium on Instrumentation Science and Technology, 713329 (12 January 2009); doi: 10.1117/12.821234
Show Author Affiliations
Ke Chen, Univ. of Electronic Science and Technology of China (China)
Jian Rong, Univ. of Electronic Science and Technology of China (China)
Xiaochun Zhong, Southwest Jiaotong Univ. (China)


Published in SPIE Proceedings Vol. 7133:
Fifth International Symposium on Instrumentation Science and Technology

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