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AuthorEl Shafie, Ahmed
AuthorAl-dhahir, Naofal
AuthorDing, Zhiguo
AuthorDuong, Trung Q.
AuthorHamila, Ridha
Available date2023-04-04T09:09:11Z
Publication Date2019
Publication NameIEEE Access
ResourceScopus
URIhttp://dx.doi.org/10.1109/ACCESS.2019.2895246
URIhttp://hdl.handle.net/10576/41663
AbstractWe investigate the physical-layer security of an uplink wireless time-division multiple-access channel with energy-harvesting source nodes. We consider a set of source nodes equipped with rechargeable batteries and information buffers communicating confidentially with a base station, Bob, in the presence of a passive eavesdropper, Eve. An energy-harvesting rechargeable-battery cooperative jammer is assumed to assist the source nodes to confidentially send their information messages. We propose a two-level optimization formulation to improve the system's security performance. At the first optimization level, we propose a jamming scheme under energy constraints at different nodes to reduce the secrecy outage probabilities without relying on the eavesdropper's instantaneous channel state information. At the second optimization level, we optimize the number of energy packets used at the source nodes and the cooperative jammer as well as the time-slot allocation probabilities to maximize the secure throughput under the network's queues stability constraints and an application-specific secure throughput for each legitimate source node. The numerical results show the significant performance gains of our proposed optimization relative to two important benchmarks. We verify our theoretical findings through simulations and quantify the impact of key system design parameters on the security performance. 2019 IEEE.
SponsorThis publication was made possible by NPRP grant # NPRP 8-627-2-260 from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of the authors.
Languageen
PublisherIEEE
SubjectEnergy harvesting
information and energy queues
physical-layer security
secrecy rates
secure throughput
TitleWiretap TDMA Networks with Energy-Harvesting Rechargeable-Battery Buffered Sources
TypeArticle
Pagination17215-17229
Volume Number7
dc.accessType Open Access


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