中国计量大学学报2017，Vol.28Issue(1)：76-80,5.DOI:10.3969/j.issn.2096-2835.2017.01.013
基于高斯近似的LDPC码TDMP算法分析
Analysis of TDMP algorithm of LDPC codes based on GA
摘要
Abstract
To solve the problem of lacking of a theoretical analysis of TDMP algorithm of LDPC codes,the Gaussian Approximation(GA) of TDMP algorithm was proposed.Based on BP algorithm and symmetry conditions,the convergent GA of TDMP algorithm could be obtained.When using GA to analyze the decoding convergence of TDMP algorithm,the theoretical basis for proving the superiority of TDMP algorithm could be provided.GAs of BP algorithm and TDMP algorithm were simulated based on the Wimax standard respectively.Simulation results show that the decoding convergence speed of TDMP algorithm is faster and its number of iterations is fewer compared with BP algorithm under the same condition.Meanwhile,the thresholds of GA and Density Evolution(DE) of TDMP algorithm were presented respectively.The gap of thresholds between GA and DE was 0.03～0.08 dB.关键词
LDPC码/高斯近似/TDMP算法/收敛速度/门限值Key words
LDPC codes/Gaussian approximation/TDMP algorithm/convergence speed/threshold分类
信息技术与安全科学引用本文复制引用
王秀敏,曹维林,单良,洪波,李劲松..基于高斯近似的LDPC码TDMP算法分析[J].中国计量大学学报,2017,28(1):76-80,5.基金项目
国家自然科学基金资助项目(No.61379027),国家自然科学青年基金资助项目(No.51404223),浙江省自然科学青年基金资助项目(No.LQ14E060003). （No.61379027）
