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Energy efficient video telephony over UMTS

Kodikara, C, Worrall, S and Kondoz, AM Energy efficient video telephony over UMTS Vehicular Technology Conference, 2004. VTC 2004-Spring. 2004 IEEE 59th, 5. 2719 - 2723 Vol.5 - 2719 - 2723 Vol.5.

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Abstract

A novel joint unequal error protection (UEP) and unequal power allocation (UPA) algorithm is proposed. UEP is performed through multiple radio bearers with different error correction capabilities. The perceived video quality is estimated based on the distortion calculation at the encoder. The transmission power on each bearer is controlled to maximize the expected perceived video quality for a given operating condition. The algorithm’s performance is evaluated for MPEG-4 coded video transmission over a simulated UMTS network. Simulation results show that the joint UEP and UPA scheme is more energy efficient than applying them individually.

Item Type: Article
Divisions: Faculty of Engineering and Physical Sciences > Electronic Engineering > Centre for Communication Systems Research
Depositing User: Melanie Hughes
Date Deposited: 23 Sep 2010 14:21
Last Modified: 09 Jun 2014 13:25
URI: http://epubs.surrey.ac.uk/id/eprint/2347

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