Low delay, error robust wireless video transmission architecture for video communication

In this paper, a novel video transmission architecture is proposed to meet the low-delay and error robust requirement of wireless video communications. This architecture uses FEC coding and ARQ protocol to provide efficient bandwidth access from wireless link. In order to reduce ARQ delay, a video proxy server is implemented at the base station. This video proxy not only reduces the ARQ response time but also provides error tracking functionality. We use H.263 as the experimental platform for our architecture. Experiments show that average luminance PSNR decreases only 0.35db for the "Foreman" sequence under a random error condition of 10^-3 error probability.