一种基于扩展自相似过程的VBR视频业务新模型

A new extended self similar process based VBR video traffic model

本文在扩展自相似过程的基础上 ,提出了一种简单的视频业务新模型。该模型的边缘分布近似Gamma分布 ,且其具有长或短的相关性。在许多时间尺度上 ,这些特性可以很好地匹配众多实际变比特率视频业务的一、二阶统计特征。仿真实验中 ,通过利用该模型模拟实际视频信号 。

This paper presents a new simple video traffic model based on extended self similar process The marginal distribution of the model is similar to Gamma distribution,and it can have long or short range dependence On many time scales,the properties can fit the first and second order statistical characteristics of lots of real variable bit rate(VBR)video traffics well In simulation,using the model to imitate real video signals,we show that it can also approximate the performance of real video traffics in a queue well