基于LDGM码的有损信源压缩的改进真实性传播算法

2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI:10.1109/WCSP.2010.5633438

Jianping Zheng, B. Bai, Ying Li, Jingmei Liu

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引用次数: 0

摘要

本文考虑使用低密度生成矩阵(LDGM)编码和真实性传播编码算法对二进制对称源进行有损源压缩。通过对重构源序列的先验概率进行软化，提出了一种简单的真实性传播方法。与真实性传播算法的比较表明，该算法在中低码率下具有较好的率失真性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Modified truthiness propagation algorithm for lossy source compression based on LDGM codes

This letter considers the lossy source compression of a binary symmetric source using low-density generator matrix (LDGM) codes and truthiness propagation encoding algorithm. And a simple variant on the truthiness propagation is proposed by softening the a priori probability of the reconstructed source sequence. Comparisons with the truthiness propagation reveal that the proposed algorithm has better rate-distortion performance at low-to-medium code rates.

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2010 International Conference on Wireless Communications & Signal Processing (WCSP)

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