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一种新的信源模型分析

Analysis of a New Source Model
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摘要 从 Oechslin提出的模型出发 ,对媒体流的业务模型进行了理论分析 .讨论了丢失率随网络利用率 ρ、中间态的转移速率 β的变化情况 ,发现对称三态 ON/ OFF模型能产生比标准 ON/ OFF模型更大的丢失率 .而且对称三态 ON/ OFF模型计算相对简单 ,对于某些特殊的信源 ,采用对称三态 ON/ OFF模型能提供更好的近似和估计 . The traffic modeling of multimedia stream provided by Oechslin is theoretically analyzed. The PLP (packet loss probability) variation with network utility and the transition rate of middle state has been studied. It shows that the new symmetric three states ON/OFF model can give a higher loss rate than the standard ON/OFF model. As the symmetric three states ON/OFF is relatively simple in computation, in some special case, it can provide better estimation than the traditional ON/OFF model.
作者 蒋玉蓉 谢敬辉
机构地区 北京理工大学光电工程系
出处 《北京理工大学学报》 EI CAS CSCD 北大核心 2002年第5期633-636,共4页 Transactions of Beijing Institute of Technology
关键词 信源模型 包丢失率 利用率 峰值速率 服务速率 多媒体通信 网络传输 packet loss probability utility peak rate service rate
分类号 TN919.8 [电子电信—通信与信息系统]
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参考文献10

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北京理工大学学报
2002年 第5期

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