Adaptive Transmission of Multi-Layered Video over Wireless Fading Channels

Authors:
Jun Xu;Xuemin Shen;J. W. Mark;Jun Cai
Affiliations:
Univ. of Waterloo, Waterloo;-;-;-
Venue:
IEEE Transactions on Wireless Communications
Year:
2007

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Abstract

In this paper, adaptive transmission of scalable multi-layered video with quality of service (QoS) assurance over wireless channels is studied. By properly formulating the channel fading as a finite state Markov channel (FSMC) model, three rate adaptation schemes, namely, assured-rate-allocation, neighbor- interleaving, and swing-loaded schemes, are proposed to exploit the inherent multiplexing gain. An analytical model for QoS performance evaluation of video transmission over time-varying erroneous channels is derived. The accuracy of the analytical model is validated by simulations. Analytical and simulation results demonstrate that the proposed rate adaptation schemes can effectively improve the channel utilization and the system throughput.