Cooperative jamming and power allocation in three-phase two-way relaying wiretap systems

Long, Hang and Xiang, Wei and Wang, Jing and Zhang, Yueying and Wang, Wenbo (2013) Cooperative jamming and power allocation in three-phase two-way relaying wiretap systems. In: IEEE Wireless Communications and Networking Conference (WCNC 2013): Connecting the Future, 7-10 Apr 2013, Shanghai, China.


The security of the three-phase two-way relaying system with an eavesdropper is investigated in this paper. A cooperative jamming and power allocation scheme is proposed to enhance the system secrecy capacity. When a source node transmits user signals to the relay node, the other source node interferes the relay node with pre-defined jamming signals simultaneously. Optimum power allocation between the user and jamming signals at each source node is analyzed. Our analytical results suggest that the proposed cooperative jamming scheme improves on the system secrecy capacity, especially when the channel gains of the two source-relay links are of large difference. Simulation results in close agreement with analytical results clearly demonstrate the advantage of the proposed cooperative jamming scheme.

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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2013 IEEE. Published version restricted in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 17 Mar 2014 12:03
Last Modified: 08 Feb 2017 04:48
Uncontrolled Keywords: signal processing; eavesdropper; relaying; wireless telecommunication systems; jamming signals; optimum power allocations; power allocations
Fields of Research : 09 Engineering > 0906 Electrical and Electronic Engineering > 090609 Signal Processing
10 Technology > 1005 Communications Technologies > 100510 Wireless Communications
Socio-Economic Objective: B Economic Development > 89 Information and Communication Services > 8901 Communication Networks and Services > 890104 Mobile Telephone Networks and Services
Identification Number or DOI: 10.1109/WCNC.2013.6555247

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