Window-growth rateless coding for data-partitioned video in wireless environments

This paper maps channel codes at the application layer to data-partitioned video so that more important compressed data are protected in a closed-loop communication scheme. In particular, window-growth rateless codes are a priority-scalable form of Forward Error Correction that also provide incremental protection to streamed video. The paper introduces a detailed scheme for achieving this according to the H.264/AVC codec´s picture types and structures. Consideration is given to the differing data-partitioning modes to establish the feasibility of the scheme for error-prone channels, with a demonstration for a wireless access channel that shows the utility of the scheme, which achieves several dB improvement in video quality (PSNR) through unequal protection compared to equal error protection.