Interactive error-resilient technique for video transport over wireless channels

A novel interactive error-resilient technique for two-way video communications over wireless channels is proposed. Firstly, we discuss the wireless channel model. Then, the error-propagation mechanism caused by motion-compensation and block-encode scheme is analyzed. Furthermore, a new technique of interactive error concealment and error-propagation prevention is presented. Simulation results show that error propagation can be suppressed using the proposed technique. Compared to the case where only forward error-correction (FEC) and simply error-concealment method are used, a gain of up to 4 dB PSNR (peak signal-to-noise ratio) is observed in error environment.