Lossy broadcasting with common transmitter-receiver reconstructions

Abstract

We consider a variant of Wyner-Ziv (WZ) coding over a broadcast channel where a source is to be communicated over a broadcast channel to two receivers that have sideinformation correlated with the source. In this variant, the transmitter and the receivers have to generate reconstructions that are (almost always) identical to one another, and each reconstruction meets a certain fidelity constraint. We present a complete characterization of the capacity region for the problem.

Common Reconstructions in the Successive Refinement Problem with Receiver Side Information

“…The records, which serve as side information, could be an earlier survey data or a previous scan, depending on the specific application. The framework considered here is the source coding problem that arises when data is to be communicated over a degraded broadcast channel to two receivers that have prior side information, and the three terminals (the transmitter and the two receivers) use a separate source-channel coding paradigm [1].…”