基于信源残留冗余的LZW容错解码新算法  

Novel Error Resilient Decoding Algorithm for LZW Based Residual Source Redundancy

作　　者：陈越新[1,2] 郑辉[2] 赵艳秋[2] 李立忠[2] 曹志刚[1] 

机构地区：[1]清华大学电子工程系,北京100084 [2]西南电子电信技术研究所,成都610041

出　　处：《武汉理工大学学报》2010年第10期159-163,共5页Journal of Wuhan University of Technology

摘　　要：研究了利用残留冗余对含错的压缩数据进行容错解码的问题。针对无损编码的容错解码建立了分段模型,并为英文文本建立了一个新的统计模型。基于上述模型,针对LZW(Lempel-Ziv-Welch)算法提出了一种容错解码新算法,实验结果表明该算法大大增强了解码器的纠错能力。最后对实验结果进行了分析。We consider the problem of error resilient decoding from data corrupted by bit errors using the residual redundancy.We constructed a segmenting model for error resilient decoding in lossless coding,and a statistical model for English text.Based the constructed models,we proposed a novel error resilient decoding algorithm for LZW（Lempel-Ziv-Welch） compression algorithm.Some experimental results show that the algorithm can enhances the abilities of correcting errors significantly.The results were also analyzed in this paper.

关 键 词：无损编码 LZW算法 容错解码 残留冗余 分段映射 

分 类 号：TN911.21[电子电信—通信与信息系统]