Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Degrees-of-Freedom of Two-Unicast Wireless Networks with Delayed
  CSIT   We characterize the degrees-of-freedom (DoF) region of a class of two-unicast
wireless networks under the assumption of delayed channel state information at
the transmitters. We consider a layered topology with arbitrary connectivity,
and we introduce new outer-bounds on the DoF region through the graph-theoretic
notion of bottleneck nodes. Such nodes act as informational bottlenecks only
under the assumption of delayed channel state information. Combining our
outer-bounds with new achievability schemes, we characterize the DoF region of
two-unicast wireless networks with informational bottlenecks. We show that
unlike the instantaneous channel state information model, the sum DoF of
two-unicast networks with delayed channel knowledge can take an infinite set of
values. We compare our results to the best previously known outer-bounds, and
we show that the gap can be arbitrary large in favor of the current work.

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The categories of this paper are: physics
16
The categories of this paper are: stat
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The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-lat
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The categories of this paper are: bayes-an
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The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
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The categories of this paper are: q-bio
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The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
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The categories of this paper are: comp-gas
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The categories of this paper are: nucl-ex
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The categories of this paper are: adap-org
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The categories of this paper are: nlin