Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Capacity Achieving Input of Amplitude Constrained Vector Gaussian
  Wiretap Channel   This paper studies secrecy-capacity of an $n$-dimensional Gaussian wiretap
channel under the peak-power constraint. This work determines the largest
peak-power constraint $\bar{\mathsf{R}}_n$ such that an input distribution
uniformly distributed on a single sphere is optimal; this regime is termed the
small-amplitude regime. The asymptotic of $\bar{\mathsf{R}}_n$ as $n$ goes to
infinity is completely characterized as a function of noise variance at both
receivers. Moreover, the secrecy-capacity is also characterized in a form
amenable for computation. Furthermore, several numerical examples are provided,
such as the example of the secrecy-capacity achieving distribution outside of
the small amplitude regime.

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The categories of this paper are: cmp-lg
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The categories of this paper are: patt-sol
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The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
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The categories of this paper are: chao-dyn
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The categories of this paper are: acc-phys
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The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
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The categories of this paper are: nucl-th
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The categories of this paper are: chem-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: gr-qc
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The categories of this paper are: eess
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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: alg-geom