A joint source and channel coding algorithm for error-resilient SPIHT-coded video bitstreams
Journal of Visual Communication and Image Representation
Implementing a cooperative MAC protocol for wireless video multicast
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
A novel approach for resource allocation in broadband access networks
Proceedings of the International Conference and Workshop on Emerging Trends in Technology
Adaptive resynchronization approach for scalable video over wireless channel
Journal of Visual Communication and Image Representation
Quality-aware bandwidth allocation for scalable on-demand streaming in wireless networks
IEEE Journal on Selected Areas in Communications
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Layered multicast is an efficient technique to deliver video to heterogeneous receivers over wired and wireless networks. We consider such a multicast system in which the server adapts the bandwidth and forward-error correction code (FEC) of each layer so as to maximize the overall video quality, given the heterogeneous client characteristics in terms of their end-to-end bandwidth, packet drop rate over the wired network, and bit-error rate in the wireless hop. In terms of FECs, we also study the value of a gateway which "transcodes" packet-level FECs to byte-level FECs before forwarding packets from the wired network to the wireless clients. We present an analysis of the system, propose an efficient algorithm on FEC allocation for the base layer, and formulate a dynamic program with a fast and accurate approximation for the joint bandwidth and FEC allocation of the enhancement layers. Our results show that a transcoding gateway performs only slightly better than the nontranscoding one in terms of end-to-end loss rate, and our allocation is effective in terms of FEC parity and bandwidth served to each user.