NDLI: The effect of human-body shadowing on indoor UWB TOA-based ranging systems

Content Provider	IEEE Xplore Digital Library
Author	Kilic, Y. Ali, A.J. Meijerink, A. Bentum, M.J. Scanlon, W.G.
Copyright Year	2012
Description	Author affiliation: Wireless Communications Research Group, School of Electronics, Electrical Engineering and Computer Science, The Queen's University of Belfast, Belfast BT3 9DT, U.K. (Ali, A.J.) \|\| Telecommunication Engineering Group, Faculty of Electrical Engineering, Mathematics and Computer Science, University of Twente, 7500 AE, Enschede, the Netherlands (Kilic, Y.; Meijerink, A.; Bentum, M.J.; Scanlon, W.G.)
Abstract	Because of its superior time resolution, ultra-wide bandwidth (UWB) transmission can be a highly accurate technique for ranging in indoor localization systems. Nevertheless, the presence of obstructions may deteriorate the ranging performance of the system. Indoor environments are often densely populated with people. However, t h e effect of the human body presence has been scarcely investigated so far within the UWB ranging context. In this work, we investigate this effect by conducting UWB measurements and analyzing the ranging performance of the system. Two measurement campaigns were performed in the 3–5.5 GHz band, in an anechoic chamber and a laboratory environment. The range estimates were obtained by employing the threshold-based first peak detection technique. Analysis results revealed that the human body significantly attenuates the direct-path signal component. On the other hand, in this study it does not introduce a significant range error since the length difference between the diffracted paths around the body and the direct-path is less than the spatial resolution of the measurement setup.
Starting Page	126
Ending Page	130
File Size	379030
Page Count	5
File Format	PDF
ISBN	9781467314374
e-ISBN	9781467314398
DOI	10.1109/WPNC.2012.6268751
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-03-15
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Antenna measurements Wireless communication UWB ranging human-body shadowing Position measurement Attenuation Distance measurement indoor localization Frequency measurement Antennas
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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