Browsing by Author "Cakareski, Zeljko"

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    Multilevel coding of broadcast video over wirless channels
    (2002-05-20) Cakareski, Zeljko; Ahmed, Nasir; Dhar, Aditya; Aazhang, Behnaam; Center for Multimedia Communications (http://cmc.rice.edu/)
    This paper addresses the problem of broadcasting video over wireless channels. In such a scenario, different end users perceive the video signal through channels with different quality. We propose a source-channel coding system, that partitions the video data in such a way that maintains a baseline quality of service even for the user with the worst channel. The system consists of a layered source representation that is robust to error propagation effects, combined with a multilevel channel coding scheme that provides an unequal error protection to the different layers of the encoded video. Experimental results show that our system is robust and guarantees a baseline quality of service to all users over a wide range of channel conditions.