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Link adaptation for video transmission over COFDM based WLANs

Research output: Contribution to conferenceAbstract

Original languageEnglish
Publication dateNov 2003
StatePublished

Abstract

Wireless Local Area Networks (WLANs) such as IEEE 802.11a/g and Hiperlan/2 operate in numerous transmission modes, each providing different throughputs and reliability levels. Link adaptation algorithms proposed in the literature ([1], [2], and [3]) maximise data throughput based on channel conditions and assume that only error-free packets may be passed on to the higher layer. For multimedia applications such as video transmission, completely error-free communication is not essential, especially if robust video compression techniques are applied. In such scenarios, better decoded video quality might be obtained with a video stream transmitted at a higher bit-rate but with some degree of transmission error, rather than an error free video stream at a lower bit-rate. In this paper, we present a link adaptation scheme that improves the Quality of Service (QoS) for video transmission in terms of the overall received video quality, rather than by maximising error-free throughput. Simulation results using the H.263+ video compression standard over IEEE 802.11a are presented.

Additional information

Terms of use: Copyright © 2003 IEEE. Reprinted from IEEE Proceedings of Symposium Benelux Chapter on Communication and Vehicular Technology. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it. Contributor (Other): IEEE Benelux Chapter on Communications and Vehicular Technology Name of Conference: 10th Symposium on Communications and Vehicular Technology (SCVT) in the Benelux Venue of Conference: Eindhoven, Holland

Research areas

  • Hiperlan/2, Wireless Local Area Networks (WLANs), IEEE 802.11a/g

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