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Energy-Efficient Cross-Layer Rate Allocation for Multi-Source Streaming over Ad Hoc Networks

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5 Author(s)
Yixin Yang ; Dept. of Comput. Sci. & Technol., Tsinghua Univ., Beijing ; Lifeng Sun ; Ke Liang ; Yuzhuo Zhong
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In this paper, we study the case that a number of cameras capture and transfer video sequences to a receiver over ad hoc networks, just as surveillance scenarios. In order to prolong system lifetime and improve the video qualities, we propose a dynamic rate allocation scheme using cross-layer techniques. The allocation is performed at the receiver of the video streams and the decision is based on a rate-power model for network transmission and a rate-distortion model of video. Experiment result shows that the proposed scheme promotes the average PSNR by 0.8-3.0 dB without shortening the system lifetime, or prolongs system lifetime by 12%-50% without cutting down the overall PSNR

Published in:

Computational Engineering in Systems Applications, IMACS Multiconference on  (Volume:2 )

Date of Conference:

4-6 Oct. 2006