Adaptive rate control for video compression and transmission over fading channel in wireless networks

Abstract

The objective of this thesis is to develop new adaptive rate control schemes for the video encoder and channel encoder so that a better picture quality is achieved as compared to the existing rate control schemes. A novel joint source channel rate control scheme is proposed in this thesis, in which the bit error rate of the video bitstream at the video decoder is used as a control component to derive bit rate for the video encoder and channel encoder. The video bitstreams are protected unequally, so that the most important bitstreams can be delivered to the video decoder correctly. The joint source channel rate control scheme is adaptive to time-varying channel as the bit error rate control component is adaptive to the channel conditions.