Optimal segmentation of a VBR source for its parallel transmission over multiple ATM connections

Sergio Servetto, Kannan Ramchandran, Klara Nahrstedt, Antonio Ortega

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Variable Bit Rate (VBR) transmission is widely regarded as the best solution for the transport of compressed image and video data, both in terms of network utilization and quality of data decoded at the receiver. However, significant problems remain unsolved to make this a viable approach. One of these problems is that of efficiently matching characteristics of the VBR source to those of the channel, in order to maximize end-to-end system performance. In this work, we propose a model for the channel based on which the source can make optimal decisions regarding bit allocation and rate control. This model consists of N queues, for each of which the source negotiates with the network statistical performance guarantees, consisting of allowable average transmission and packet loss rates. Based on such a channel description, the source determines how to allocate packets to each queue, to minimize the expected distortion of the images reconstructed at the receiver. A probably optimal algorithm for computing such bit allocations is the core of this work. Simulation results are presented.

Original languageEnglish (US)
Title of host publicationIEEE International Conference on Image Processing
PublisherIEEE Comp Soc
Pages5-8
Number of pages4
Volume2
StatePublished - 1997
EventProceedings of the 1997 International Conference on Image Processing. Part 2 (of 3) - Santa Barbara, CA, USA
Duration: Oct 26 1997Oct 29 1997

Other

OtherProceedings of the 1997 International Conference on Image Processing. Part 2 (of 3)
CitySanta Barbara, CA, USA
Period10/26/9710/29/97

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Hardware and Architecture
  • Electrical and Electronic Engineering

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