NDLI: Secure robust relay beamforming: a convex conic approximation approach

Content Provider	IET Digital Library
Author	Sadr, Mohammad Amin Maleki Attari, Mahmoud Ahmadian
Abstract	In this study, the problem of secure robust relay beamforming for peer-to-peer networks in the presence of eavesdroppers has been optimised and relaxed by assuming the imperfect knowledge of eavesdroppers’ channel state information (CSI). Since the wiretap CSI is imperfect at its legitimate transmitter and receiver, it is a critical issue to make the optimisation problem robust against the channel uncertainty. The authors’ optimisation problem aims to maximise the probabilistic secrecy rate that is subject to keeping the probability of the transmission power of the relays below a specific threshold. The problem is shown to be non-convex in its original form since the outage probability constraint does not admit a closed-form expression and it is a non-deterministic polynomial complete problem. They have presented three novel stochastic methods to handle the outage probability constraint. It has been shown that after some relaxation and randomisation, the problem can be represented as a convex optimisation problem which can be efficiently solved using interior point methods. Simulation results have been presented to verify the advantages of their methods.
Starting Page	1138
Ending Page	1150
Page Count	13
ISSN	17518628
Volume Number	10
e-ISSN	17518636
Issue Number	Issue 10, Jul (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/10/10
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2015.0762
Journal	IET Communications
Publisher Date	2016-07-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Approximation Theory Array Signal Processing Channel State Information Convex Conic Approximation Approach Convex Optimisation Problem Convex Programming Interior Point Method Interpolation And Function Approximation Nondeterministic Polynomial Complete Problem Novel Stochastic Method Numerical Analysis Optimisation Technique Outage Probability Peer-to-peer Network Probabilistic Secrecy Rate Probability Radio Link And Equipment Relay Network Secure Robust Relay Beamforming Signal Processing And Detection Statistics Telecommunication Wiretap CSI
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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