Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Security Analysis of a Cooperative Incremental Relaying Protocol
  in the Presence of an Active Eavesdropper   Physical layer security offers an efficient means to decrease the risk of
confidential information leakage through wiretap links. In this paper, we
address the physical-layer security in a cooperative wireless subnetwork that
includes a source-destination pair and multiple relays, exchanging information
in the presence of a malevolent eavesdropper. Specifically, the eavesdropper is
active in the network and transmits artificial noise (AN) with a
multiple-antenna transmitter to confound both the relays and the destination.
We first analyse the secrecy capacity of the direct source-to-destination
transmission in terms of intercept probability (IP) and secrecy outage
probability (SOP). A decode-and-forward incremental relaying (IR) protocol is
then introduced to improve reliability and security of communications in the
presence of the active eavesdropper. Within this context, and depending on the
availability of channel state information, three different schemes (one optimal
and two sub-optimal) are proposed to select a trusted relay to improve the
achievable secrecy rate. For each one of these schemes, and for both selection
and maximum ratio combining at the destination and eavesdropper, we derive new
and exact closed-form expressions for the IP and SOP. Our analysis and
simulation results demonstrate the superior performance of the proposed
IR-based selection schemes for secure communication. They also confirm the
existence of a floor phenomenon for the SOP in the absence of AN.

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The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
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The categories of this paper are: hep-th
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The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn