桂林电子科技大学学报2017，Vol.37Issue(2)：98-101,4.
基于密度进化的LDPC码BP译码算法的量化门限分析
Quantization threshold analysis of BP decoding algorithm for LDPC codes based on density evolution
摘要
Abstract
Aiming at the value of the quantitation threshold in BP decoding algorithm for LDPC codes, a new method based on density evolution is proposed.This method tracks the probability density function of the message in the iterative decoding process by mathematics, so as to select the optimal quantization threshold by calculating the error performance of the different quantization thresholds.Simulation results show that on the analysis of the LDPC codes set which pass quantization threshold as parameter, the BER performance will gradually converge as the increase of the quantization threshold value.And the density evolution method is efficient, feasible and practical.关键词
LDPC码/BP译码/量化门限/密度进化Key words
low density parity check codes/belief propagation decoding/quantization threshold/density evolution分类
信息技术与安全科学引用本文复制引用
李世荣,敖珺,梁积卫,盛均峰..基于密度进化的LDPC码BP译码算法的量化门限分析[J].桂林电子科技大学学报,2017,37(2):98-101,4.基金项目
国家自然科学基金(61167006) （61167006）
广西认知无线电与信息处理重点实验室主任基金(CRKL150106) （CRKL150106）
