Abstract
摘要: 一对好的度分布可以有效降低LDPC的错误平层和编译码复杂度，在AWGN信道下，通过高斯近似分析方法可近似计算给定度分布的LDPC译码门限，利用差分进化算法可优化度分布以获得具有最大门限的度分布，仿真结果表明获得的度分布的译码门限比线性算法优化结果要好0.15dB左右。 关键词: LDPC / 差分进化 / 高斯近似 / 门限值 / 度分布
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