NDLI: Secure transmission in multiuser peer-to-peer relay network with finite alphabet input

Content Provider	IET Digital Library
Author	Cao, Kuo Cai, Yueming Yang, Weiwei
Abstract	This study considers linear precoding for secure transmission in a multiuser peer-to-peer relay network with finite alphabet input. Under the assumption that the global channel-state-information is available, the achievable secrecy rate is derived. However, the computational complexity to evaluate the achievable secrecy rate grows exponentially with respect to the number of pair users. To reduce the computational complexity caused by the multiuser interference, an accurate approximation of the achievable secrecy rate is derived. Based on Karush–Kuhn–Tucker analysis, necessary conditions for the optimal precoder which maximises the approximated achievable secrecy rate are presented. In light of this, an iterative gradient method is developed to find the optimal precoder. Numerical examples demonstrate that the proposed scheme achieves significant gains in terms of the secrecy rate over schemes designed for Gaussian input.
Starting Page	713
Ending Page	719
Page Count	7
ISSN	17518628
Volume Number	11
e-ISSN	17518636
Issue Number	Issue 5, Mar (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/11/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2016.1030
Journal	IET Communications
Publisher Date	2016-12-05
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Computational Complexity Computer Communication Computer Network And Technique Computer Network Security Data Security Electromagnetic Compatibility Finite Alphabet Input Gaussian Input Gaussian Processes Global Channel-state-information Gradient Method Interference Interpolation And Function Approximation Iterative Gradient Method Iterative Method Karush-Kuhn-Tucker Analysis Multiuser Interference Multiuser Peer-to-peer Relay Network Numerical Analysis Optimal Precoder Optimisation Technique Peer-to-peer Computing Radio Frequency Interference Radio Link And Equipment Relay Network Secrecy Rate Secure Transmission Statistics Telecommunication
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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