NDLI: Enhancing physical layer security through beamforming and noise injection

Content Provider	IEEE Xplore Digital Library
Author	Hao Wang Li Chen Weidong Wang
Copyright Year	2014
Description	Author affiliation: Dept. of Electron. Eng. & Inf. Sci., Univ. of Sci. & Technol. of China, Hefei, China (Hao Wang; Li Chen; Weidong Wang)
Abstract	In this paper, we evaluate how much beamforming and noise injection can improve physical layer security by deriving the probability of non-zero secrecy capacity and the secrecy outage probability. Our model is a typical wiretap channel model, composed of three participants - the transmitter Alice, the legitimate receiver Bob and the eavesdropper Eve. A typical cellular scenario is considered where Alice has multiple antennas while Bob and Eve each have only one antenna (MISOSE). Beamforming and noise injection at Alice are applied to achieve a higher instantaneous signal-to-noise ratio (SNR) at Bob and a lower SNR at Eve. The probability density functions (pdf) of Bob and Eve's SNR are figured out in both noise-injection condition and injection-free condition, and we derive the closed-form expressions for the probability of non-zero secrecy capacity and the secrecy outage probability. Numerical analysis is also addressed using the two probabilities introduced above.
Starting Page	1
Ending Page	6
File Size	195018
Page Count	6
File Format	PDF
ISBN	9781479973392
DOI	10.1109/WCSP.2014.6992129
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-10-23
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Array signal processing Vectors Security Antennas Signal to noise ratio Capacity planning
Content Type	Text
Resource Type	Article

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