Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Performance Analysis and Optimization for Jammer-Aided Multi-Antenna UAV
  Covert Communication   Unmanned aerial vehicles (UAVs) have attracted a lot of research attention
because of their high mobility and low cost in serving as temporary aerial base
stations (BSs) and providing high data rates for next-generation communication
networks. To protect user privacy while avoiding detection by a warden, we
investigate a jammer-aided UAV covert communication system, which aims to
maximize the user's covert rate with optimized transmit and jamming power. The
UAV is equipped with multi-antennas to serve multi-users simultaneously and
enhance the Quality of Service. By considering the general composite fading and
shadowing channel models, we derive the exact probability density (PDF) and
cumulative distribution functions (CDF) of the signal-to-interference-plusnoise
ratio (SINR). The obtained PDF and CDF are used to derive the closed-form
expressions for detection error probability and covert rate. Furthermore, the
covert rate maximization problem is formulated as a Nash bargaining game, and
the Nash bargaining solution (NBS) is introduced to investigate the negotiation
among users. To solve the NBS, we propose two algorithms, i.e., particle swarm
optimization-based and joint twostage power allocation algorithms, to achieve
covertness and high data rates under the warden's optimal detection threshold.
All formulated problems are proven to be convex, and the complexity is
analyzed. The numerical results are presented to verify the theoretical
performance analysis and show the effectiveness and success of achieving the
covert communication of our algorithms.

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The categories of this paper are: astro-ph
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The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
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The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
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The categories of this paper are: physics
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The categories of this paper are: atom-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-lat
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The categories of this paper are: math-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: acc-phys
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The categories of this paper are: nucl-ex
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The categories of this paper are: stat