NDLI: Robust physical layer authentication using inherent properties of channel impulse response

Content Provider	IEEE Xplore Digital Library
Author	Liu, F.J. Xianbin Wang Tang, H.
Copyright Year	2011
Description	Author affiliation: Dept. of Electrical and Computer Engineering, The University of Western Ontario, London, Canada (Liu, F.J.; Xianbin Wang) \|\| Defense Research Development Canada, Ottawa, Canada (Tang, H.)
Abstract	We propose a robust physical layer authentication scheme for wireless communications based on a hypothesis testing of the inherent properties of channel impulse response (CIR) in a time-varying multipath environment. In this paper, the variation between two consecutive CIRs from a transmitter of interest is monitored at the receiver to distinguish the identities of transmitters for authentication purpose. To improve the authentication performance, we develop a new test statistic based on the difference between noise-mitigated CIRs, to minimize the impact of noise and interference from the wireless environment. To achieve this goal, a signal-to-noise ratio (SNR) dependent threshold is derived to eliminate the excessive noise in the estimated CIRs prior to the determination of CIR difference. An adaptive threshold for authentication decision is also developed by statistically evaluating the CIR variation between the legitimate transmitter and the receiver. The theoretical False Alarm Rate (FAR) and Probability of Detection (PD) are analyzed to evaluate the performance and robustness of the proposed authentication technique. Additionally, an orthogonal frequency division multiplexing (OFDM) system is employed to validate the proposed scheme and the related theoretical analysis.
Starting Page	538
Ending Page	542
File Size	361471
Page Count	5
File Format	PDF
ISBN	9781467300797
ISSN	21557578
e-ISBN	9781467300810
DOI	10.1109/MILCOM.2011.6127727
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-11-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Authentication OFDM Wireless communication Testing Signal to noise ratio Transmitters
Content Type	Text
Resource Type	Article

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