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PHY Layer Authentication via Drifting Oscillators
KTH, School of Electrical Engineering (EES), Communication Theory.
KTH, School of Electrical Engineering (EES), Communication Theory.ORCID iD: 0000-0001-6682-6559
2014 (English)In: Global Communications Conference (GLOBECOM), 2014 IEEE, IEEE conference proceedings, 2014, 716-721 p.Conference paper (Refereed)
Abstract [en]

PHY layer authentication of a wireless sender has gained much interest recently. In this paper, we consider the famous Alice, Bob and Eve model and investigate (for the first time) the feasibility of using time-varying clock offsets for sender-node-authentication at Bob. Specifically, we exploit the fact (and de-facto problem) that clock offset between every node pair is unique; moreover, the two clock offsets between any two node pairs drift independently and randomly over time. Therefore, an explicit mechanism is needed to track the time-varying clock offsets. To this end, we model oscillator drift as brownian motion frequency and phase drift, and present a novel framework which is based on interplay between a hypothesis testing device and a bank of two Kaiman filters; one KF (KFh0) tracks Alice's clock while other KF (KFh1) tracks Eve's clock. Building on aforementioned framework, we then propose a novel sender-node-authentication method (so-called MHF method) by means of which Bob can automatically accept (reject) a received packet if it is sent by Alice (Eve). Finally, simulation results are presented which corroborate the efficiency of the proposed method.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2014. 716-721 p.
National Category
Communication Systems
Research subject
URN: urn:nbn:se:kth:diva-158228DOI: 10.1109/GLOCOM.2014.7036892ScopusID: 2-s2.0-84949922175OAI: diva2:775651
IEEE Global Telecommunications Conference 2014 (GLOBECOM 2014),08 Dec - 12 Dec 2014, Austin, USA
ICT - The Next Generation

QC 20150223

Available from: 2015-01-04 Created: 2015-01-04 Last updated: 2015-02-23Bibliographically approved

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