Wireless Communications
IWCMC '07 Proceedings of the 2007 international conference on Wireless communications and mobile computing
Dynamic Programming and Optimal Control, Vol. II
Dynamic Programming and Optimal Control, Vol. II
Capacity regions for wireless ad hoc networks
IEEE Transactions on Wireless Communications
Optimized Rate-Distortion Extraction With Quality Layers in the Scalable Extension of H.264/AVC
IEEE Transactions on Circuits and Systems for Video Technology
Overview of the Scalable Video Coding Extension of the H.264/AVC Standard
IEEE Transactions on Circuits and Systems for Video Technology
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Applications involved with multimedia streaming are blooming with the development of Internet and wireless networks. In this paper, we address the problem of how to jointly leverage power control and rate allocation to achieve high-performance video streaming with strict delay and energy over wireless ad-hoc networks. We focus on media-aware rate allocation and power control with goal of minimizing the total video distortion, power consumption and network congestion of multiple users over multiple wireless ad-hoc links. We formulate this system as a controlled stochastic Markov decision process, whose optimal control policy instructs the system how to allocate rate and control power according to the current channel state. And the solution to this dynamic programming problem, which turns out to be a randomized optimal control policy, can be solved using linear programming with much lower complexity. Simulation results show that the proposed scheme provide significant performance gain in terms of video quality, power consumption and network congestion.