NDLI: Secure communication design for multi-user peer-to-peer wireless relay networks

Content Provider	IET Digital Library
Author	Gong, Xiangwu Long, Hang Dong, Feihong Yin, Hao
Abstract	In this study, physical layer security techniques are studied for multi-user peer-to-peer relay networks using amplify-and-forward protocol in the presence of an eavesdropper. Two system designs are considered: the minimum achievable secrecy rate maximisation and the total transmit power minimisation. First, considering user fairness, the authors study the max–min achievable secrecy rate problem subject to a total transmit power constraint. Mathematically, the optimisation problem is non-linear and non-convex. They propose a polynomial time algorithm based on the bisection technique to solve it. Second, they study the total transmit power minimisation problem which aims at minimising the total transmit power at relays such that individual secrecy rate for each user is satisfied. The total power optimisation problem is also non-convex, so they use the relaxation technique to transform it into a convex problem which can be efficiently solved by the gradient-based algorithms. Numerical evaluation of the obtained secrecy rate and transmit power results shows that the proposed designs can significantly improve the performance of secure wireless communications.
Starting Page	770
Ending Page	777
Page Count	8
ISSN	17518628
Volume Number	10
e-ISSN	17518636
Issue Number	Issue 7, May (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/10/7
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2015.0609
Journal	IET Communications
Publisher Date	2016-05-05
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Amplify And Forward Communication Amplify-and-forward Protocol Computer Network And Technique Computer Network Security Concave Programming Convex Problem Convex Programming Data Security Gradient Method Gradient-based Algorithm Interpolation And Function Approximation Linear Algebra Mathematical Analysis Max-min Achievable Secrecy Rate Problem Minimax Technique Minimisation Multiuser Peer-to-peer Wireless Relay Network Nonconvex Optimisation Problem Nonlinear Optimisation Problem Nonlinear Programming Numerical Analysis Numerical Evaluation Optimisation Technique Peer-to-peer Computing Physical Layer Security Technique Polynomial Polynomial Time Algorithm Power Minimisation Problem Protocol Radio Link And Equipment Radio Network Relaxation Technique Relaxation Theory Relay Network Secrecy Rate Maximisation Secure Wireless Communication Design Telecommunication Total Power Optimisation Problem
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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