Cooperative jamming and power allocation with untrusty two-way relay nodes

Long, Hang and Xiang, Wei and Wang, Jing and Zhang, Yueying and Wang, Wenbo (2014) Cooperative jamming and power allocation with untrusty two-way relay nodes. IET Communications , 8 (13). pp. 2290-2297. ISSN 1751-8628


This study investigates the security of the two-way relaying system with untrusty relay nodes. Cooperative jamming schemes are considered for bi-directional secrecy communications. The transmit power of each source node is divided into two parts corresponding to the user and jamming signals, respectively. Two different assumptions of the jamming signals are considered. When the jamming signals are a priori known at the two source nodes, closed-form power allocation expressions at two source nodes are derived. Under the assumption of unknown jamming signals, it is proven that the cooperative jamming is useless for the system secrecy capacity, because that all the power should be allocated to the user signals at each source node. Relay selection is also investigated based on the analysis of cooperative jamming. Simulation results are presented to compare the system secrecy capacities under the two jamming signal assumptions.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2014 Institution of Engineering and Technology. 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: 28 Sep 2014 23:16
Last Modified: 22 Sep 2017 01:22
Uncontrolled Keywords: cooperative jamming; power allocations; two-way relay
Fields of Research : 09 Engineering > 0906 Electrical and Electronic Engineering > 090609 Signal Processing
08 Information and Computing Sciences > 0803 Computer Software > 080303 Computer System Security
09 Engineering > 0906 Electrical and Electronic Engineering > 090699 Electrical and Electronic Engineering not elsewhere classified
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: 10.1049/iet-com.2013.0580

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