Video Transmission Over Wireless Fading Channels with Adaptive FEC

The performance of robust video transmission over wireless fading channels relies on a coordinated protection effort in handling channel and source variations dynamically. Given the relative priority of each source packet and the estimated instantaneous channel condition, an adaptive protection scheme with joint source-channel criteria is investigated via the use of proactive forward error correction (FEC). In particular, we explore a dynamic programming solution in coordinating the concatenated code consisting of the Reed-Solomon (RS) code and the rate-compatible punctured convolutional (RCPC) code. To obtain a realistic joint source-channel adaptation scheme, special attention is paid to the channel status feedback in terms of accuracy and delay, the best concatenated code selection, and packetization efficiency. The performance improvement of the proposed adaptation is demonstrated by applying error resilient ITUT H.263+ video.