The University of Southampton
University of Southampton Institutional Repository

Subband-adaptive turbo-coded OFDM-based interactive video telephony

Subband-adaptive turbo-coded OFDM-based interactive video telephony
Subband-adaptive turbo-coded OFDM-based interactive video telephony
A range of adaptive orthogonal frequency division multiplex (AOFDM) video systems are proposed for interactive communications over wireless channels. The proposed constant target bit-rate subband adaptive OFDM modems can provide a lower bit error rate than a corresponding conventional OFDM modem. The slightly more complex switched or time-variant target bit rate AOFDM modems can provide a balanced video quality performance, across a wider range of channel signal-to-noise ratios, maintaining the best video performance. Upon invoking the technique advocated—irrespective of the channel conditions experienced—the transceiver achieves always the best possible video quality by automatically adjusting the achievable bit rate and the associated video quality in order to match the channel quality experienced. This is achieved on a near-instantaneous basis under given propagation conditions in order to cater for the effects of path-loss, fast-fading, slow-fading, dispersion, etc. Furthermore, when the mobile is roaming in a hostile outdoor propagation environment, typically low-order, low-rate modem modes are invoked, while in benign indoor environments predominantly the high-rate, high source-signal representation quality modes are employed. Index Terms—Adaptive AOFDM, adaptive transceiver, AOFDM, H.263 video codec, OFDM, wireless video telephony.
829-839
Cherriman, P.J.
1e7d352c-2e6e-4892-bb0b-4f4744d3dc63
Keller, T.
41cd2bbf-bf82-4aac-83e9-d585f67f9742
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Cherriman, P.J.
1e7d352c-2e6e-4892-bb0b-4f4744d3dc63
Keller, T.
41cd2bbf-bf82-4aac-83e9-d585f67f9742
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1

Cherriman, P.J., Keller, T. and Hanzo, L. (2002) Subband-adaptive turbo-coded OFDM-based interactive video telephony. IEEE Transactions on Circuits and Systems for Video Technology, 12 (10), 829-839. (doi:10.1109/TCSVT.2002.804887).

Record type: Article

Abstract

A range of adaptive orthogonal frequency division multiplex (AOFDM) video systems are proposed for interactive communications over wireless channels. The proposed constant target bit-rate subband adaptive OFDM modems can provide a lower bit error rate than a corresponding conventional OFDM modem. The slightly more complex switched or time-variant target bit rate AOFDM modems can provide a balanced video quality performance, across a wider range of channel signal-to-noise ratios, maintaining the best video performance. Upon invoking the technique advocated—irrespective of the channel conditions experienced—the transceiver achieves always the best possible video quality by automatically adjusting the achievable bit rate and the associated video quality in order to match the channel quality experienced. This is achieved on a near-instantaneous basis under given propagation conditions in order to cater for the effects of path-loss, fast-fading, slow-fading, dispersion, etc. Furthermore, when the mobile is roaming in a hostile outdoor propagation environment, typically low-order, low-rate modem modes are invoked, while in benign indoor environments predominantly the high-rate, high source-signal representation quality modes are employed. Index Terms—Adaptive AOFDM, adaptive transceiver, AOFDM, H.263 video codec, OFDM, wireless video telephony.

Text
pjc-tk-lh-csvt-oct-2002.pdf - Other
Download (822kB)

More information

Published date: October 2002
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 257017
URI: http://eprints.soton.ac.uk/id/eprint/257017
PURE UUID: d5c61a50-853e-4292-8be0-f7e5db073973
ORCID for L. Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 03 Dec 2003
Last modified: 28 May 2020 00:24

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×