Efficient modeling of VER MPEG-1 coded video sources

Doulamis, ND; Doulamis, AD; Konstantoulakis, GE; Stassinopoulos, GI

dc.contributor.author	Doulamis, ND	en
dc.contributor.author	Doulamis, AD	en
dc.contributor.author	Konstantoulakis, GE	en
dc.contributor.author	Stassinopoulos, GI	en
dc.date.accessioned	2014-03-01T01:15:34Z
dc.date.available	2014-03-01T01:15:34Z
dc.date.issued	2000	en
dc.identifier.issn	1051-8215	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13605
dc.subject	asynchronous transfer mode (ATM)	en
dc.subject	MPEG-1 coded video traffic and flow control	en
dc.subject	statistical multiplexing	en
dc.subject	variable bit rate (VBR) coding	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.other	LONG-RANGE DEPENDENCE	en
dc.subject.other	NETWORKS	en
dc.title	Efficient modeling of VER MPEG-1 coded video sources	en
heal.type	journalArticle	en
heal.identifier.primary	10.1109/76.825864	en
heal.identifier.secondary	http://dx.doi.org/10.1109/76.825864	en
heal.language	English	en
heal.publicationDate	2000	en
heal.abstract	Performance evaluation of broadband networks requires statistical analysis and modeling of the actual network traffic. Since multimedia services, and especially variable bit rate (VBR) MPEG-coded video streams are expected to be a major traffic component carried by these networks, modeling of such services and accurate estimation of network resources are crucial for proper network design and congestion-control mechanisms that can guarantee the negotiated quality of service at a minimum cost. The layer modeling of MPEG-1 coded video streams and statistical analysis of their traffic characteristics at each layer is proposed in this paper, along with traffic models capable of estimating the network resources over asynchronous transfer mode (ATM) links. First, based on the properties of the entire MPEG-1 sequence (frame layer signal), a model (Model A) is presented by correlating three stochastic processes in discrete time (autoregressive models), each of which corresponds to the three types of frames of the MPEG encoder (I, P, and B frames). To simplify the traffic Model A and to reduce the required number of parameters, we study the MPEG stream at a higher layer by considering a signal, which expresses the average properties of I, P, and B frames over a group of picture (GOP) period. However, models on this layer cannot accurately estimate the network resources, especially in multiplexing schemes. For this reason, an intermediate layer is introduced, which exploits and efficiently combines information of both the aforementioned layers, producing a model (Model B), which requires much smaller number of parameters than Model A and simultaneously provides satisfactory results as far as the network resources are concerned. Evaluation of the validity of the proposed models is performed through experimental studies and computer simulations, using several long duration VER MPEG-1 coded sequences, different from that used in modeling. The results indicate that both Models A and B are good estimators of video traffic behavior over ATM links at a wide range of utilization.	en
heal.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC	en
heal.journalName	IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY	en
dc.identifier.doi	10.1109/76.825864	en
dc.identifier.isi	ISI:000086167200013	en
dc.identifier.volume	10	en
dc.identifier.issue	1	en
dc.identifier.spage	93	en
dc.identifier.epage	112	en