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马尔可夫模型在VoIP通话质量实时评估中的应用
引用本文:王伟,王贞松.马尔可夫模型在VoIP通话质量实时评估中的应用[J].计算机应用,2007,27(12):2969-2972.
作者姓名:王伟  王贞松
作者单位:中国科学院研究生院;威全通(北京)科技有限公司 中国科学院计算技术研究所
摘    要:针对运用国际电联G.107 E模型评估VoIP通话质量时如何准确计算有效设备损伤系数的问题,提出一种基于马尔可夫模型的实时评估算法,通过分别为随机信息包丢失概率和突发比建立三态和二态马尔可夫模型,推导出估算有效设备损伤系数的运算公式和相应统计算法。商用测试结果表明,该评估算法能够在实时环境中较准确地评估VoIP通话质量。

关 键 词:网络电话    马尔可夫模型    E模型    有效设备损伤系数    通话质量
文章编号:1001-9081(2007)12-2969-04
收稿时间:2007-06-13
修稿时间:2007年6月13日

Application of Markov model in real-time evaluation of VoIP speech quality
WANG Wei,WANG Zhen-song.Application of Markov model in real-time evaluation of VoIP speech quality[J].journal of Computer Applications,2007,27(12):2969-2972.
Authors:WANG Wei  WANG Zhen-song
Abstract:To accurately calculate the Ie-eff coefficient when evaluating VoIP speech quality with the ITU-T G.107 E-model, a real-time evaluation algorithm based on Markov model was presented. Through the establishment of 3-state Markov model for Ppl and 2-state Markov model for BurstR, formulas were derived and corresponding statistics algorithm was given. Commercial test results indicate that this algorithm can accurately evaluate the VoIP speech quality in real-time environment.
Keywords:VoIP                                                                                                                        markov model                                                                                                                        E-model                                                                                                                        Ie-eff                                                                                                                        speech quality
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