Wireless Powered Large-Scale Multi-Antenna AF Relaying for Cooperative Jamming-Aided Secrecy

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Abstract

This paper studies the secrecy transmission with
the aid of a large-scale multi-antenna amplify-and-forward (AF)
relay wireless powered by the source. Specifically, the wireless
energy harvesting (WEH)-enabled relay devices a hybrid receiver
architecture, in which the received power at each individual
antenna is split for energy harvesting (EH) and information
receiving (IR) in the first transmission phase; the aggregate of the
total harvested power is further split for cooperative jamming
(CJ) to confound the eavesdroppers, and AF using maximum
ratio combining (MRC) and maximum ratio transmitting (MRT),
respectively, at the relay in the second transmission phase.
Assuming that the eavesdroppers in the proximity are distributed
as Poisson point process (PPP), no channel state information
(CSI) but the density of which is known to the relay, the
ergodic secrecy rate (ESR) is used to characterize the secrecy
performance. The optimum portion of power allocated for CJ is
also derived to significantly improve on the ESR especially in the
case of high eavesdroppers’ density.
Original languageEnglish
Title of host publicationIEEE International workshop on Signal Processing advances in Wireless Communications
PublisherInstitute of Electrical and Electronics Engineers Inc.
Volume2016-August
ISBN (Print)9781509017492
DOIs
Publication statusPublished - 11 Aug 2016

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