文章基本信息

标题：Design of A High-speed Parallel LDPC Encoder
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作者：Wu, Guoqiang ; Tan, Shujun ; Zhang, Jianwei 等
期刊名称：Journal of Computers
印刷版ISSN：1796-203X
出版年度：2013
卷号：8
期号：8
页码：1995-2002
DOI：10.4304/jcp.8.8.1995-2002
语种：English
出版社：Academy Publisher
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.
关键词：LDPC Code;BP decoding arithmetic;AWGN channel;high-speed Parallel decoder;iterative decoding algorithms