Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Secrecy Outage Probability Analysis of Multi-User Multi-Eavesdropper
  Wireless Systems   In this paper, we explore the physical-layer security of a multi-user
wireless system that consists of multiple users intending to transmit to a base
station (BS), while multiple eavesdroppers attempt to tap the user
transmissions. We examine the employment of multi-user scheduling for improving
the transmission security against eavesdropping and propose a multi-user
scheduling scheme, which only requires the channel state information (CSI) of
BS without the need of the passive eavesdroppers' CSI. We also consider the
round-robin scheduling for comparison purposes. The closed-form secrecy outage
probability expressions of the round-robin scheduling and proposed multi-user
scheduling are derived over Rayleigh fading channels. Numerical results
demonstrate that the proposed multi-user scheduling outperforms the round-robin
scheduling in terms of the secrecy outage probability. As the number of users
increases, the secrecy outage probability of round-robin scheduling keeps
unchanged. By contrast, the secrecy outage performance of the proposed
multi-user scheduling improves significantly with an increasing number of
users.

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The categories of this paper are: q-bio
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The categories of this paper are: mtrl-th
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The categories of this paper are: eess
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The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
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The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
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The categories of this paper are: math-ph
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The categories of this paper are: solv-int
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The categories of this paper are: physics
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The categories of this paper are: q-fin
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The categories of this paper are: astro-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: funct-an