纠错算术码的检错时延分布研究  

Distribution of Error Detection Delay for Error Correction Arithmetic Codes

作　　者：李洪玲[1] 王嘉[1] 逄玉叶 

机构地区：[1]上海交通大学上海数字媒体处理与传输重点实验室,上海200240

出　　处：《通信技术》2009年第11期28-30,共3页Communications Technology

摘　　要：算术码是一种高效的熵编码,但是对误码十分敏感,由此引入了纠错算术码。以往研究中发现基于比特填充法的纠错算术码,其检错时延分布近似几何分布。文中通过研究基于比特跟随法的纠错算术码的检错时延分布,建立了符号检错时延分布的伽马分布模型,并通过曲线拟合得到了伽马分布的参数与影响因素之间的数学关系。拟合计算得出的数据与实验数据比较证实了新模型的可靠性。The arithmetic code is a powerful entropy coding, and however, sensitive to transmission errors. So the arithmetic code with error det Error Detection Delay （EDD） based on ect bit ion and correction is proposed. In previous study, the distribution of filling is modeled as a geometric distribution. Through study on the distribution of theEDDbasedon bit following, this articlepresents anewgamma distribution model of the symbol EDD. Finally, through curve fitting, the relation expressions on distribution are given. The comparisons of the result aquired from curve fitting with the result from experiment prores the reliability of this new distribution model

关 键 词：算术码 检错延时 几何分布 伽马分布 

分 类 号：TN911[电子电信—通信与信息系统]