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Secrecy Capacity for Multi-Antenna Wireless-Powered AF Relaying Systems

Salem, A and Musavian, L (2018) Secrecy Capacity for Multi-Antenna Wireless-Powered AF Relaying Systems. In: 14th International Wireless Communications & Mobile Computing Conference (IWCMC) 2018, 2018-06-25 - 2018-06-29, Limassol, Cyprus.

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This paper analyzes the ergodic secrecy capacity of an energy-constrained multiple-antennas amplify-and-forward (AF) relaying system in the presence of a passive eavesdropper. In the first phase, the source broadcasts information signal, while the destination sends an artificial jamming signal. The jamming signal has two main purposes: 1) enhancing the system security; 2) increasing the energy harvesting (EH) at the relay node. In the second phase, the relay uses the harvested energy to amplify and forward the received signal to the destination. For this system model, explicit mathematical expressions for the ergodic secrecy capacity are derived for three different common EH-relaying protocols, namely, power splitting relaying (PSR), antenna selection and power splitting (ASPS) receiver, and ideal relaying receiver (IRR). Monte-Carlo simulations are included to validate the analysis and the effect of different parameters on the system security are investigated. The results show that, the ASPS receiver outperforms PSR in terms of secrecy capacity.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Published proceedings: 2018 14th International Wireless Communications & Mobile Computing Conference (IWCMC)
Uncontrolled Keywords: amplify and forward communication; antenna arrays; cooperative communication; energy harvesting; jamming; Monte Carlo methods; protocols; relay networks (telecommunication); telecommunication security; system security; relay node; harvested energy; system model; ergodic secrecy capacity; power splitting; antenna selection; ASPS receiver; multiantenna wireless-powered AF; energy-constrained multiple-antennas; source broadcasts information signal; artificial jamming signal; relaying system; EH-relaying protocols; relaying receiver; Relays; Receiving antennas; Security; Information processing
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions: Faculty of Science and Health
Faculty of Science and Health > Computer Science and Electronic Engineering, School of
SWORD Depositor: Elements
Depositing User: Elements
Date Deposited: 08 Oct 2018 13:23
Last Modified: 15 Jan 2022 01:25

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