Abstract
In wireless communication networks, an important issue that must be addressed is the limited energy supply of a mobile device, especially in wireless video applications. In this paper, we develop a parametric video encoding architecture, which is fully scalable in power consumption, and establish the power-rate-distortion (P-R-D) model of the video encoding system. Both theoretically and experimentally, we show that by using this P-R-D model, the encoding system is able to automatically adjust its complexity control parameters to match the available energy supply of the mobile device while maximizing the picture quality. The P-R-D model provides a theoretical guideline for system design and performance optimization in wireless video communication under power constraint.
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