Reliable video transmission over fading wireless channel using joint source-channel adaptation

This research presents a robust video transmission scheme over fading wireless channels that relies on a coordinated protection e ort in handling channel and source variations dynamically. Given the priority of each source packet and the estimated channel condition, an adaptive protection scheme based on joint source-channel criteria is investigated via proactive forward error correction (FEC). A product code is developed based on both the Reed-Solomon (RS) code and rate-compatible punctured convolutional (RCPC) codes. We explore the dynamic programming algorithm in matching the relative priority of source packets to instantaneous channel conditions. To obtain a realistic joint source-channel adaptation scheme, special attention has been paid to the channel status feedback in terms of accuracy and delay, the product code tradeo , and the involved packetization eÆciency. The performance improvement due to adaptation via a dynamic programming solution is demonstrated by simulating the wireless transmission of error resilient ITU-T H.263+ video.