NDLI: Secrecy sum rate maximisation in multi-antenna two-way relay networks

Content Provider	IET Digital Library
Author	Bozorgi, Seyedeh Fatemeh Akhlaghi, Soroush
Abstract	This study investigates the achievable secrecy rate of two-way relay-assisted networks. It is assumed that there is no direct link between transceiver ends and the communication is carried out in two hops through the use of multi-antenna relays in the middle of transmission, where the relays employ amplify-and-forward strategies. To increase the bandwidth efficiency, intending nodes exchange their confidential messages in two hops. First, both nodes simultaneously send their messages to the relay nodes. Then, throughout the second hop, the relays make use of cooperative beamforming to send their incoming information in such a way that the achievable secrecy sum rate is maximised, considering each node is subject to a minimum secrecy rate constraint. Accordingly, two beamforming strategies, named as null-space beamforming and information leakage alignment beamforming are proposed, where their achievable secrecy sum rates are investigated and compared to existing works addressed in the literature.
Starting Page	541
Ending Page	548
Page Count	8
ISSN	17518628
Volume Number	14
e-ISSN	17518636
Issue Number	Issue 4, Mar (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/14/4
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2018.6154
Journal	IET Communications
Publisher Date	2019-09-27
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Achievable Secrecy Rate Achievable Secrecy Sum Rate Amplify And Forward Communication Amplify-and-forward Strategy Antenna Array Array Signal Processing Beamforming Strategy Confidential Messages Convex Programming Cooperative Communication Direct Link Information Leakage Alignment Beamforming Interpolation And Function Approximation Minimum Secrecy Rate Constraint Multiantenna Relay Numerical Analysis Optimisation Technique Radio Link And Equipment Radio Network Relay Network Relay Node Relay-assisted Network Secrecy Sum Rate Maximisation Signal Processing And Detection Telecommunication Telecommunication Security Transceiver Ends Two-way Relay Network Wireless Channel
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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