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mmRTI: Radio Tomographic Imaging using Highly-Directional Millimeter-Wave Devices for Accurate and Robust Indoor Localization
Rhein Westfal TH Aachen, Inst Networked Syst, Aachen, Germany..
Rhein Westfal TH Aachen, Inst Networked Syst, Aachen, Germany..
KTH, School of Electrical Engineering and Computer Science (EECS), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
2017 (English)In: 2017 IEEE 28TH ANNUAL INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR, AND MOBILE RADIO COMMUNICATIONS (PIMRC), IEEE , 2017Conference paper, Published paper (Refereed)
Abstract [en]

As a device-free approach, radio tomographic imaging (RTI) is ideally suited for low-cost indoor localization in context-aware Internet-of-Things applications. However, the fundamental RTI algorithm relies on shadowing of the line of sight (LOS) links and therefore, conventional RTI implementations using 2.4 GHz sensing networks (microRTI) fail to accurately localize users in multipath-rich indoor environments. The localization accuracy is further degraded by external human movement that affects the signal propagation. In this paper, we propose mmRTI, a novel RTI approach based on a highly-directional, millimeter-wave sensing network, that aims to improve indoor localization by utilizing the LOS-dominant nature of millimeter-wave signal propagation. We experimentally evaluate mmRTI, operating at 60 GHz, with and without human movement around the sensing network, in two indoor environments, and compare its performance against the conventional microRTI approach. We observe that mmRTI achieves a 90%-ile localization error of 0.07 m-0.25 m, an improvement of 2.41 m-2.60m compared to microRTI, while remaining unaffected by external human movement, which degrades the microRTI localization accuracy by up to 1.2 m.

Place, publisher, year, edition, pages
IEEE , 2017.
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:kth:diva-226258ISI: 000426970902040Scopus ID: 2-s2.0-85045269638OAI: oai:DiVA.org:kth-226258DiVA, id: diva2:1210450
Conference
2017 IEEE 28TH ANNUAL INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR, AND MOBILE RADIO COMMUNICATIONS (PIMRC)08-13 October 2017 – Montreal, QC, Canada
Note

QC 20180528

Available from: 2018-05-28 Created: 2018-05-28 Last updated: 2018-05-28Bibliographically approved

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