Wireless-powered friendly jammer for physical layer security
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Liu, Wanchun
Zhou, Xiangyun
Durrani, Salman
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Institute of Electrical and Electronics Engineers (IEEE)
Abstract
Exploring a cooperative node as a friendly jammer
is an effective means of providing secure communication between
a source-destination pair in the presence of an eavesdropper. In
this work, we consider the use of a wireless-powered friendly
jammer. Without relying on external energy supply, the friendly
jammer is powered by the source node via wireless power
transfer. We apply a simple time-switching protocol where the
power transfer and jammer-assisted secure transmission occur in
different time blocks. By investigating the long-term behavior of
the communication protocol, we derive a closed-form expression
of the throughput. We further optimize the jamming power and
the rate parameters for maximizing the throughput subject to a
secrecy outage probability constraint.
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Conference paper
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Open Access
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