NDLI: Robust transmit design for secure AF relay networks based on worst-case optimization

Content Provider	IEEE Xplore Digital Library
Author	Lingxiang Li Zhi Chen Jun Fang
Copyright Year	2014
Description	Author affiliation: Nat. Key Lab. on Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China (Lingxiang Li; Zhi Chen; Jun Fang)
Abstract	This paper studies robust transmit design to maximize the worst-case secrecy rate in AF networks under both total and individual relay power constraints. Channel state information (CSI) in the network is assumed to be perfectly known except for that associated with the eavesdroppers whose imperfection is modeled as deterministic bounded errors. To use the power at the relay nodes more efficiently, a joint cooperative relaying and jamming scheme is considered. Through some matrix manipulations, we recast the original nonconvex optimization problem as a sequence of semidefinite programs (SDPs), which enables us to obtain the optimal relay weights and the optimal covariance matrix of the jamming signal. Numerical results are presented to show the efficacy of the proposed scheme.
Sponsorship	IEEE Signal Process. Soc.
Starting Page	2719
Ending Page	2723
File Size	219793
Page Count	5
File Format	PDF
ISBN	9781479928934
DOI	10.1109/ICASSP.2014.6854094
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-05-04
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relays Optimization Jamming Security Noise Robustness Joints Cooperative communications Physical-layer security Worst-case secrecy capacity
Content Type	Text
Resource Type	Article

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