Cross-Layer Optimization of Unequal Protected Layered Video over Hierarchical Modulation

Unequal protection mechanisms have been proposed at several layers in order to improve the reliability of multimedia contents, especially for video data. The paper aims at implementing a multi-layer unequal protection scheme, which is based on a Physical-Transport-Application cross-layer design. Hie...

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Bibliographic Details
Main Authors: Pradas, D., Bouabdallah, A., Lacan, J., Vazquez Castro, M.A., Bousquet, M.
Format: Conference Proceeding
Language:English
Subjects:
Attenuation
Cross layer design
Design optimization
Digital video broadcasting
Error correction codes
Modulation coding
Physical layer
Protection
Telecommunications
Wireless communication
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Summary:Unequal protection mechanisms have been proposed at several layers in order to improve the reliability of multimedia contents, especially for video data. The paper aims at implementing a multi-layer unequal protection scheme, which is based on a Physical-Transport-Application cross-layer design. Hierarchical Modulation, in the physical layer, has been demonstrated to increase the overall user capacity of a wireless communication. On the other hand, unequal erasure protection codes at the transport layer turned out to be an efficient method to protect video data generated by the application layer by exploiting their intrinsic properties. In this paper, the two techniques are jointly optimized in order to enable recovering lost data in case the protection is performed separately. We show that the cross-layer design proposed herein outperforms the performance of hierarchical modulation and unequal erasure codes taken independently.
ISSN:1930-529X
2576-764X
DOI:10.1109/GLOCOM.2009.5425982