Provided by: Academy Publisher
Date Added: Dec 2009
In this paper, the authors investigate the problem of rate adaptation transcoding algorithm for transmitting video over wireless channels, i.e., channels such that errors tend to occur in clusters during fading periods. An adaptive rate control algorithm based on the theory of stochastic optimal control was proposed, which is capable of dynamically determining the transcoder's objective bit rate according to the bandwidth variation of wireless channel and the buffer occupancy. In addition, it can balance real-time transmission with continuity of video playing and attempt to acquire the best overall performance.