Security-Reliability Tradeoff for Friendly Jammer Aided Multiuser Scheduling in Energy Harvesting Communications

In this paper, we investigate the physical-layer security in an energy-harvesting (EH) multiuser network with the help of a friendly jammer (J), where multiple eavesdroppers are considered to tap the information transmission from users (Us) to base station (BS). In this system, a power beacon (PB) t...

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Bibliographic Details
Published in:Security and communication networks 2021, Vol.2021, p.1-16
Main Authors: Jiang, Xiao, Li, Peng, Li, Bin, Zou, Yulong, Wang, Ruchuan
Format: Article
Language:English
Subjects:
Antennas
Eavesdropping
Electronic surveillance
Energy
Energy harvesting
Energy management
Mobile communications networks
Noise
Radio equipment
Radio frequency
Radio signals
Reliability analysis
Scheduling
Security
Sensors
Signal processing
Tradeoffs
Wireless communications
Wireless networks
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Summary:In this paper, we investigate the physical-layer security in an energy-harvesting (EH) multiuser network with the help of a friendly jammer (J), where multiple eavesdroppers are considered to tap the information transmission from users (Us) to base station (BS). In this system, a power beacon (PB) transmits radio frequency (RF) signals to Us for charging. In order to enhance the security of wireless transmission, we propose non-energy-aware multiuser scheduling (NEAMUS) scheme and energy-aware multiuser scheduling (EAMUS) scheme. For the purpose of comparison, we introduce conventional round robin multiuser scheduling (CRRMUS) scheme. The closed-form outage probability (OP) and intercept probability (IP) expressions of NEAMUS, EAMUS, and CRRMUS schemes are derived over Rayleigh fading channels. Additionally, we analyze the security-reliability tradeoff (SRT) of NEAMUS, EAMUS, and CRRMUS schemes in terms of OP and IP. Numerical results show that the proposed EAMUS scheme is superior to the CRRMUS scheme and NEAMUS scheme in terms of SRT, demonstrating the advantage of the proposed EAMUS scheme in improving the physical-layer security and reliability. Moreover, SRT performance of NEAMUS and EAMUS schemes can also be improved by increasing the number of users.
ISSN:1939-0114
1939-0122
DOI:10.1155/2021/5599334