摘要
作为多媒体服务的主要组成部分,视频数据传输的性能评估是多媒体传输系统性能评估的核心内容。文章首先介绍了泊松点过程驱动的随机微分方程的相关数学理论,然后以变码率(VBR)视频的排队网络为实际应用背景,使用这种数学工具建立系统的排队模型,并进行了针对队列一阶距的性能评价分析。通过深入的理论分析,文章给出了针对视频传输方案性能改进和性能评估的有益结论,并给出了一种可能的队列各阶距的估算方法。
As the major component of multimedia services,the performance evaluation on digital video transmission is the key issue in multimedia delivery system.The paper introduces the preliminary mathematics of Poisson Counter Driven Stochastic Differential Equation.Then the authors propose the model of queuing network of VBR video by applying PDSDE.Especially,the paper conducts theoretical analysis on the first moment of queuing.Finally,some significant conclusions are drawn and the analysis presents a possible approach to estimate moments of queuing.
出处
《计算机工程与应用》
CSCD
北大核心
2004年第35期145-146,207,共3页
Computer Engineering and Applications
