Joint Relay and Jammer Selection for Secure Two-Way Relay Networks

By Jingchao Chen, Rongqing Zhang, Lingyang Song, Zhu Han, B. Jiao. 2011 IEEE International Conference on Communications (ICC), 2011

303 citations recorded by the source corpus.

In this paper, we investigate joint relay and jammer selection in two-way cooperative networks, consisting of two sources, a number of intermediate nodes, and one eavesdropper, with secrecy constraints. Specifically, the proposed algorithms select two or three intermediate nodes to enhance security against the malicious eavesdropper. The first selected node operates in the conventional relay mode and assists the sources to deliver their data to the corresponding destinations via the amplify-and-forward protocol. The second and third nodes are used in different communication phases as jammers in order to create intentional interference upon the eavesdropper node. Firstly, we find that in a topology where the relay and jamming nodes are randomly and sparsely distributed, the proposed schemes with cooperative jamming outperforms the conventional non-jamming schemes within a certain transmitted power regime. We also find that, in the scenario in which the intermediate nodes gather as a close cluster, the jamming schemes may be less effective than their non-jamming counterparts. Therefore, we introduce a hybrid scheme to switch between jamming and non-jamming modes. Simulation results validate our theoretical analysis that the hybrid switching scheme further improves the secrecy rate.

Subfields: Computer Networks and Communications, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/fa7adb7d2c25ac1c7e4bdd27f820f0f5b926dc80

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Citations in the corpus

A Survey on Multiple-Antenna Techniques for Physical Layer Security (2017, background): “Hence, secure transmission based on two-way relay protocol has received considerable interests [144]–[146].”
Optimal Relay Selection for Physical-Layer Security in Cooperative Wireless Networks (2013, background): “The physical-layer security was further examined in twoway relay networks in [16] and [17] where multiple twoway relays are exploited to improve the secrecy capacity”
Physical Layer Security for Next Generation Wireless Networks: Theories, Technologies, and Challenges (2017, background): “To take full advantage of multiple relays, [84], [85] proposed a joint relay and jammer selection scheme to select two or three intermediate nodes to enhance security against Eve.”