Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Capacity of Mixed and One-Sided Gaussian Interference Channels   This paper adds to the understanding of the capacity region of the Gaussian
interference channel. To this end, the capacity region of the one-sided
Gaussian interference channel is first fully characterized. This is
accomplished by introducing a new representation of the Han-Kobayashi region
and providing a new outer bound on the capacity region of this channel which is
tight both in the weak and strong interference regimes. In light of this
capacity result, the capacity region of the degraded Gaussian interference
channel is established immediately. Next, by combining the capacity regions of
the one-sided interference channels in the weak and strong interference
regimes, new outer bounds on the capacity region of the interference channel
are introduced, in various interference regimes. It is then proved that the
outer bound corresponding to the mixed interference regime, in which one of the
receivers is subject to strong interference while the other one suffers from
weak interference, is tight in a broad range of this regime. The new capacity
results, on the whole, confirm the optimality of decoding part of the
interference and treating the rest as noise. The optimum amount to be decoded
varies from 0 to 100% of the interfering signal, depending on the relative
importance of the users' rates (i.e., the ratio of weights in the weighted
sum-rate), their transmission powers, and the gain of the weak interference
link. Optimal values are found explicitly, based on the above parameters.

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The categories of this paper are: hep-th
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The categories of this paper are: q-bio
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The categories of this paper are: patt-sol
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The categories of this paper are: math-ph
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The categories of this paper are: eess
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The categories of this paper are: stat
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The categories of this paper are: q-alg
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: q-fin
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The categories of this paper are: econ
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The categories of this paper are: solv-int
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The categories of this paper are: acc-phys
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The categories of this paper are: cond-mat
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The categories of this paper are: gr-qc