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Proceedings Paper

Comparison of standard-based H.264 error-resilience techniques and multiple-description coding for robust MIMO-enabled video transmission
Author(s): Milos Tesanovic; David R. Bull; Dimitris Agrafiotis; Angela Doufexi
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Paper Abstract

MIMO (multiple-input-multiple-output) systems offer potential for throughput increase and enhanced quality of service for multimedia transmission. The underlying multipath environment requires new error-resilience techniques if the obtained benefits are to be fully exploited. Different MIMO architectures produce error-patterns of somewhat diverse characteristics. This paper proposes the use of multiple-description coding (MDC) as an approach that outperforms the standard-based error-resilience techniques in the majority of these cases. Results obtained from the random packet-error generator are furthered through the use of realistic MIMO channel scenarios and argue in favour of the deployment of an MDC-based video transmission system. Singular value decomposition (SVD) is used to create orthogonal sub-channels within a MIMO system which provide, depending on their respective gains and fading characteristics, an efficient means of mapping video content. Results indicate improvements in average PSNR of decoded test-sequences of up to 3 dB (5dB in the region of high PERs) compared to standard, single-description video transmission. This is also supported by significant subjective quality enhancements.

Paper Details

Date Published: 29 January 2007
PDF: 9 pages
Proc. SPIE 6508, Visual Communications and Image Processing 2007, 650805 (29 January 2007);
Show Author Affiliations
Milos Tesanovic, Univ. of Bristol (United Kingdom)
David R. Bull, Univ. of Bristol (United Kingdom)
Dimitris Agrafiotis, Univ. of Bristol (United Kingdom)
Angela Doufexi, Univ. of Bristol (United Kingdom)

Published in SPIE Proceedings Vol. 6508:
Visual Communications and Image Processing 2007
Chang Wen Chen; Dan Schonfeld; Jiebo Luo, Editor(s)

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