Secure Communications in CIoT Networks with a Wireless Energy Harvesting Untrusted Relay
AbstractThe Internet of Things (IoT) represents a bright prospect that a variety of common appliances can connect to one another, as well as with the rest of the Internet, to vastly improve our lives. Unique communication and security challenges have been brought out by the limited hardware, low-complexity, and severe energy constraints of IoT devices. In addition, a severe spectrum scarcity problem has also been stimulated by the use of a large number of IoT devices. In this paper, cognitive IoT (CIoT) is considered where an IoT network works as the secondary system using underlay spectrum sharing. A wireless energy harvesting (EH) node is used as a relay to improve the coverage of an IoT device. However, the relay could be a potential eavesdropper to intercept the IoT device’s messages. This paper considers the problem of secure communication between the IoT device (e.g., sensor) and a destination (e.g., controller) via the wireless EH untrusted relay. Since the destination can be equipped with adequate energy supply, secure schemes based on destination-aided jamming are proposed based on power splitting (PS) and time splitting (TS) policies, called intuitive secure schemes based on PS (Int-PS), precoded secure scheme based on PS (Pre-PS), intuitive secure scheme based on TS (Int-TS) and precoded secure scheme based on TS (Pre-TS), respectively. The secure performances of the proposed schemes are evaluated through the metric of probability of successfully secure transmission (
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Hu, H.; Gao, Z.; Liao, X.; Leung, V.C.M. Secure Communications in CIoT Networks with a Wireless Energy Harvesting Untrusted Relay. Sensors 2017, 17, 2023.
Hu H, Gao Z, Liao X, Leung VCM. Secure Communications in CIoT Networks with a Wireless Energy Harvesting Untrusted Relay. Sensors. 2017; 17(9):2023.Chicago/Turabian Style
Hu, Hequn; Gao, Zhenzhen; Liao, Xuewen; Leung, Victor C.M. 2017. "Secure Communications in CIoT Networks with a Wireless Energy Harvesting Untrusted Relay." Sensors 17, no. 9: 2023.
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