Representation of Correlated Sources Into Graphs for Transmission Over Broadcast Channels

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In this paper, the authors consider the communication problem that involves transmission of correlated sources over broadcast channels. They consider a graph-based framework for this information transmission problem. The system involves a source coding module and a channel coding module. In the source coding module, the sources are efficiently represented using a nearly semi-regular bipartite graph, and the in the channel coding module, the edges of this graph are reliably transmitted over a broadcast channel. They consider nearly semi-regular bipartite graphs as discrete interface between source coding and channel coding in this multi-terminal setting.