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论文类型：期刊论文

发表时间：2013-01-01

发表刊物：Journal of Computers (Finland)

收录刊物：EI、Scopus

卷号：8

期号：8

页面范围：1995-2002

ISSN号：1796203X

摘要：In this paper, the traditional BP decoding algorithm of LDPC code is investigated in detail. The large computation load is a shortcoming of traditional BP decoding algorithm, and an improved BP decoding algorithm is then proposed to deal with the problem. In the iterative decoding process, the wrong bit information only needs to be updated for the decoding algorithm, which consequently improves the efficiency and reduces time-delay of decoding. According to the improved BP decoding algorithm, the high-speed parallel encoder is designed, which can be used in various distributed sensor network applications. Furthermore, the error correction performance of this high speed parallel encoder in the Gaussian channel is studied. The simulation is provided to illustrate that the improved high speed parallel encoder has lower computational complexity and higher decoding speed based on the premise of a little decoding performance loss. ? 2013 ACADEMY PUBLISHER.