摘要
针对相当多的视频业务具有长相关性和在许多时间尺度上的边缘概率分布都近似服从Ｇａｍｍａ分布的特性，提出了一种新的简单视频业务模型．该模型的边缘概率分布服从对数正态分布，并且具有长相关性，因此，该模型能够很好地体现实际视频业务的上述统计特性．仿真实验通过排队性能的分析也验证了该模型的有效性．
A lot of video traffics have long range dependence, and their marginal distributions on many time scales are similar to Gamma distributions.For this reason, the paper presents a new simple video traffic model.The model has long range dependence, and its marginal distribution is logarithm normal distribution which approximates the Gamma distribution with the same mean value and variance. As a result, the model can reflects the first and second order statistical properties of real video traffics well.In simulation, by analyzing queue performance, the effectiveness of the proposed model is also testified.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
1999年第1期20-23,共4页
Journal of Beijing University of Posts and Telecommunications
基金
邮电部科技专题基金
关键词
扩展自相似过程
ATM网
视频业务模型
video signal
traffic model
long range dependence
extended self similar process
