Joint Source - Channel Coding for Transmitting Correlated Sources over Broadcast Networks

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Executive Summary

The authors consider a set of S independent encoders that must transmit a set of correlated sources through a network of noisy, independent, broadcast channels to T receivers, with no interference at the receivers. For the general problem of sending correlated sources through broadcast networks, it is known that the source - channel separation theorem breaks down and the achievable rate regions as well as the proper method of coding are unknown. For their scenario, however, they establish the optimal rate region using a form of joint source - channel coding. When the optimal channel input distribution from transmitter i to receiver j is independent of j, their result has a max-flow/min-cut interpretation.

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