NDLI: Robust secure switching transmission in multi-antenna relaying systems: cooperative jamming or decode-and-forward beamforming

Content Provider	IET Digital Library
Author	Lin, Zhi Cai, Yueming Yang, Weiwei Wang, Lei
Abstract	In this study, the authors investigate the physical layer security for safeguarding secure transmission in multi-antenna relaying networks with imperfect channel state information (CSI). Different from traditional strategies in multi-antenna relaying systems, which would terminate the communication if the relay could not decode the signals successfully, the authors propose robust secure transmission strategy which switches between cooperative jamming (CJ) and decode-and-forward (DF) beamforming. Specifically, if the received signal-to-noise ratio at the relay is lower than a predefined threshold, it will impose CJ signals on potential eavesdropper, otherwise the relay would operate DF beamforming. The authors’ objective is to maximise secrecy rate and minimise secrecy outage probability in different practical communication scenarios with relaxed or strict time-delay constraint. Thus, given the unavailability of the perfect eavesdropping CSI, the authors propose a worst-case robust design and a statistical-approach robust design based on secrecy rate and secrecy outage criterion, respectively. In addition, a traditional DF robust scheme and a non-robust scheme are also considered as benchmarks. Simulation results verify that the proposed scheme significantly outperforms the traditional DF robust scheme and the non-robust scheme.
Starting Page	1673
Ending Page	1681
Page Count	9
ISSN	17518628
Volume Number	10
e-ISSN	17518636
Issue Number	Issue 13, Sep (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/10/13
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2016.0051
Journal	IET Communications
Publisher Date	2016-09-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Antenna Array Array Signal Processing CJ Signal Cooperative Communication Cooperative Jamming Decode And Forward Communication Decode-and-forward Beamforming DF Beamforming DF Robust Scheme Imperfect Channel State Information Imperfect CSI Jamming Multiantenna Relaying System Nonrobust Scheme Physical Layer Security Radio Link And Equipment Relaxed Time-delay Constraint Relay Network Reliability Robust Secure Switching Transmission Safeguarding Secure Transmission Secrecy Outage Probability Minimisation Secrecy Rate Maximisation Signal Processing And Detection Signal to Noise Ratio Statistical Analysis Statistical-approach Robust Design Statistics Strict Time-delay Constraint Telecommunication Telecommunication Network Reliability Telecommunication Security Wireless Channel Worst case Robust Design
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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