On enhancing MPEG video broadcast over wireless networks with an auxiliary broadcast channel

We study the problem of enhancing a baseline standards-compliant video-over-wireless broadcast system through the use of an auxiliary wireless broadcast channel. Our proposed solution is based on the information-theoretic concept of broadcast source coding which subsumes the concept of source coding with side-information. We integrate into this framework an analytically tractable mechanism for dynamically incorporating channel loss. Empirical validation of our proposed algorithm on a typical 3G wireless network broadcast channel simulator reveals its superior performance over pure FEC-based solutions by an average of 2-4 dB in PSNR.