Abstract
In this work, we present an effective IPTV system architecture over WiMAX network. Basically, H.264 MGS coding is employed to adaptively transmit IPTV stream over the time-varying wireless environment. The proposed system is designed to provide an enhanced mobile IPTV service to as many subscribers as possible considering their wireless link states. To achieve this goal, the base layer stream is transmitted with the sparsest modulation scheme and the lowest coding rate to provide IPTV service of minimum quality to all subscribers in the cell. And some parts of the enhancement layer stream are transmitted with the modulation scheme and the coding rate selected to pursue an effective tradeoff between the number of subscribers that receive the enhancement layer stream and their IPTV service quality. Finally, experimental results are provided to show the performance of the proposed system.
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