New Efficient Check Node Update Method for Improved Min-Sum LDPC Decoding
This paper has presented various Min-Sum related LDPC decoding algorithms and their typical hardware architectures of check node update in the scenario of parallel implementation. For one check node update of Normalized Min-Sum algorithm, if the current row weight is dc, dc multiplications are needed. If dc is large, dc multiplications are needed, which leads to high complexity.In this article, one innovative method for check node update has been found, which can obviously reduce the number of multiplication operations for the Normalized Min-Sum algorithm and the number of comparison/selection operations for the Row Weight Matched Min-Sum algorithm of high rate LDPC codes. Simulations have claimed the performance of Normalized Min-Sum and Row Weight Matched Min-Sum is nearly the same as that of Log-BP, namely the optimal algorithm, which has shown that Normalized Min-Sum and Row Weight Matched Min-Sum are good choices for LDPC decoding.
LDPC CNU BP Min-Sum
LU Xin XU Jun LIANG Yong-sheng
Shenzhen Information Technology Institute, Shenzhen, P.R.China Baseband Algorithm Department, Mobile division, ZTE Corporation
国际会议
成都
英文
152-156
2007-09-23(万方平台首次上网日期,不代表论文的发表时间)