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Rate-Distortion with Side-Information at Many Decoders

We present a new inner bound for the rate region of the $t$-stage successive-refinement problem with side-information. We also present a new upper bound for the rate-distortion function for lossy-source coding with multiple decoders and side-information. Characterising this rate-distortion function is a long-standing open problem, and it is widely believed that the tightest upper bound is provided by Theorem 2 of Heegard and Berger's paper "Rate Distortion when Side Information may be Absent", \emph{IEEE Trans. Inform. Theory}, 1985. We give a counterexample to Heegard and Berger's result.

preprint2010arXivOpen access
Roy TimoTerence ChanAlexander Grant
math.ITInformation Theory
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Roy TimoTerence ChanAlexander Grant

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