Real-time video transmission over WCDMA systems

This paper proposes a joint source-channel rate control algorithm for real-time video transmissions over WCDMA systems. The algorithm encompasses a region-based bit allocation strategy and a macro block-based segmentation technique. To enhance the video quality while saving bits, the algorithm effectively allocates more bits to important parts of a video frame, and also adapts to time-varying WCDMA channels. Simulation results demonstrate that the proposed algorithm effectively improves perceptual quality, reduces frame skipping and, thereby, maintains the motion continuity in wireless video transmissions.