Reciprocity in Linear Deterministic Networks Under Linear Coding

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Executive Summary

The linear deterministic model has been used recently to get a first order understanding of many wireless communication network problems. In many of these cases, it has been pointed out that the capacity regions of the network and its reciprocal (where the communication links are reversed and the roles of the sources and the destinations are swapped) are the same. In this paper, the authors consider a linear deterministic communication network with multiple unicast information flows. For this model and under the restriction to the class of linear coding, they show that the rate regions for a network and its reciprocal are the same. This can be viewed as a generalization of the linear reversibility of wireline networks, already known in the network coding literature.

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