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arXiv · 1810.09663

Two-way Function Computation

Seiyun Shin·Changho Suh
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Abstract

We explore the role of interaction for the problem of reliable computation over two-way multicast networks. Specifically we consider a four-node network in which two nodes wish to compute a modulo-sum of two independent Bernoulli sources generated from the other two, and a similar task is done in the other direction. The main contribution of this work lies in the characterization of the computation capacity region for a deterministic model of the network via a novel transmission scheme. One consequence of this result is that, not only we can get an interaction gain over the one-way non-feedback computation capacities, but also we can sometimes get all the way to perfect-feedback computation capacities simultaneously in both directions. This result draws a parallel with the recent result developed in the context of two-way interference channels.

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Seiyun Shin, Changho Suh. 2018-10-24. Two-way Function Computation. https://arxiv.org/abs/1810.09663

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