Date Added: Dec 2011
Video streaming over wireless channels is challenged with the time-varying nature of the underlying channels and the stringent requirements of video applications. In particular, video streaming has strict requirements on bandwidth, delay and loss rate while wireless channels are dynamic and error-prone by nature. In this paper, the authors propose a novel multilevel adaptive scheme that is designed to mitigate the challenges facing video streaming over unreliable channels. This is done while preventing potential playback discontinuities and guaranteeing a graceful degradation of the rendered video quality. Scalable video coding, adaptive modulation and adaptive channel coding are integrated to achieve the objectives of the proposed scheme.