Layered video streams over wireless ad hoc campus networks

Hong Man, Yang Li

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents a new transport scheme for layered video streams over wireless ad hoc networks. An efficient 3-D subband video coder is used in generating multi-layer source data streams. The underlay wireless ad hoc network is specially designed for a campus environment. The video coding algorithm features a 3-D symmetric lapped transform for both spatial and temporal decorrelation. Its block based bitplane coding procedure generates progressive bit streams that can be segmented into multiple resolution layers. In ad hoc network, a class based queuing (CBQ) mechanism is employed to provide differentiated services (Diff-Serv) for different data stream layers. This integrated networking system prioritizes the layers for lower resolutions or with higher error sensitivities, so that they will experience less delay or packet loss in case of congestion or link breakage. Through this approach, the advantage of progressive source coding is effectively exploited, and it is incorporated with DiffServ networking technique to improve the overall system performance. Simulations have been conducted on the network simulator (ns-2), and some results are presented in this paper.

Original languageEnglish
Title of host publicationProceedings of 2002 IEEE 10th Digital Signal Processing Workshop, DSP 2002 and 2nd Signal Processing Education Workshop, SPE 2002
Pages387-391
Number of pages5
ISBN (Electronic)0780381165, 9780780381162
DOIs
StatePublished - 2002
Event10th IEEE Digital Signal Processing Workshop, DSP 2002 and the 2nd IEEE Workshop on Signal Processing Education, SPE 2002 - Pine Mountain, United States
Duration: 13 Oct 200216 Oct 2002

Publication series

NameProceedings of 2002 IEEE 10th Digital Signal Processing Workshop, DSP 2002 and 2nd Signal Processing Education Workshop, SPE 2002

Conference

Conference10th IEEE Digital Signal Processing Workshop, DSP 2002 and the 2nd IEEE Workshop on Signal Processing Education, SPE 2002
Country/TerritoryUnited States
CityPine Mountain
Period13/10/0216/10/02

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