Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Feedback through Overhearing   In this paper we examine the value of feedback that comes from overhearing,
without dedicated feedback resources. We focus on a simple model for this
purpose: a deterministic two-hop interference channel, where feedback comes
from overhearing the forward-links. A new aspect brought by this setup is the
dual-role of the relay signal. While the relay signal needs to convey the
source message to its corresponding destination, it can also provide a feedback
signal which can potentially increase the capacity of the first hop. We derive
inner and outer bounds on the sum capacity which match for a large range of the
parameter values. Our results identify the parameter ranges where overhearing
can provide non-negative capacity gain and can even achieve the performance
with dedicated-feedback resources. The results also provide insights into which
transmissions are most useful to overhear.

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The categories of this paper are: dg-ga
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The categories of this paper are: physics
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The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
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The categories of this paper are: stat
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The categories of this paper are: hep-ex
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The categories of this paper are: supr-con
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The categories of this paper are: chem-ph
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The categories of this paper are: q-alg
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The categories of this paper are: chao-dyn
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The categories of this paper are: solv-int
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-fin
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The categories of this paper are: astro-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: alg-geom