IEEE Transactions on Wireless Communications
Priority encoding transmission
IEEE Transactions on Information Theory - Part 1
A broadcast approach for a single-user slowly fading MIMO channel
IEEE Transactions on Information Theory
Fine granularity scalable video: implications for streaming and a trace-based evaluation methodology
IEEE Communications Magazine
Hierarchical modulation with vector rotation for E-MBMS transmission in LTE systems
Journal of Electrical and Computer Engineering - Special issue on LTE/LTE-advanced cellular communication networks
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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.