Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Capacity Results for MIMO Optical Wireless Communication With
  Per-Antenna Intensity Constraints   In this paper, we investigate capacities of two types of the multiple-input
multiple-output (MIMO) optical intensity channel (OIC) under per-antenna peak-
and average-intensity constraints, called the equal-cost constrained OIC
(EC-OIC) and the bounded-cost constrained OIC (BC-OIC). The average intensities
of input in the EC-OIC are required to be equal to preassigned constants, while
in the BC-OIC those intensities are no larger than preassigned constants. We
first consider a general vector Gaussian channel under moment constraints and
prove that its high-SNR capacity is determined by the maximum differential
entropy with some mild conditions. Then three capacity expressions are derived
for the rank-one EC-OIC, the rank-one BC-OIC and the EC-OIC of rank being the
number of transmit antennas minus one, respectively, based on which we obtain
the results that : 1) either a rank-one EC-OIC and a rank-one BC-OIC is
equivalent to some SISO OIC with an amplitude constraint and several moment
constraints; 2) by asymptotic results on the moment-constrained vector Gaussian
channel, both high-SNR asymptotic capacities of the EC-OIC and the BC-OIC of
rank being the number of transmit antennas minus one are characterized.
Furthermore, we focus on low-SNR capacity slopes for the general MIMO BC-OIC,
and prove properties of the optimal intensity allocation, which simplify the
involved nonsmooth optimization problem.

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The categories of this paper are: solv-int
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The categories of this paper are: dg-ga
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The categories of this paper are: q-bio
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The categories of this paper are: econ
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The categories of this paper are: physics
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The categories of this paper are: funct-an
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The categories of this paper are: hep-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: astro-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: stat
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The categories of this paper are: chem-ph
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The categories of this paper are: math-ph
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The categories of this paper are: adap-org
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The categories of this paper are: chao-dyn