Digital Pictures: Representation, Compression, and Standards
Digital Pictures: Representation, Compression, and Standards
Broadband Wireless Access - The Next Wireless Revolution
CNSR '06 Proceedings of the 4th Annual Communication Networks and Services Research Conference
Improving Quality of VoIP Streams over WiMax
IEEE Transactions on Computers
A cross-layer design framework for robust IPTV services over IEEE 802.16 networks
IEEE Journal on Selected Areas in Communications - Special issue on broadband access networks: Architectures and protocols
Efficient Quality of Service scheduling mechanism for WiMAX networks
Computer Communications
Feedback-based real-time streaming over WiMax
IEEE Wireless Communications
Controlled Channel Access Scheduling for Guaranteed QoS in 802.11e-Based WLANs
IEEE Transactions on Wireless Communications
IEEE Communications Magazine
IPTV over WiMAX: Key Success Factors, Challenges, and Solutions [Advances in Mobile Multimedia]
IEEE Communications Magazine
Hi-index | 0.00 |
In performing video multicast over WiMAX networks, AMC enables the BSs to be able to select an appropriate modulation method in accordance with the transmission objective, namely to improve the video quality or to maximize the bandwidth utilization efficiency. However, by choosing the modulation method which maximizes the video quality at all of the SSs, the bandwidth utilization efficiency is reduced and vice versa. In addition, because wireless channels are noisy, FEC is always employed for video multicast. However, by choosing high FEC ratio, the video quality is improved but the bandwidth utilization efficiency is degraded and vice versa. In other words, a tradeoff exists between the video quality and the bandwidth utilization efficiency for video multicast over WiMAX networks. Accordingly, the present study proposes a scheme designated as Performance-Driven Robust Video Multicast PDRVM, in which both the modulation method and the FEC ratio are determined adaptively in accordance with the network status by mathematical analyses. Simulation results show that PDRVM not only ensures that most of the SSs acquire a good video quality, but also makes the best possible use of the available transmission resources.