NDLI: Localization in wireless sensor networks under non line-of-sight propagation

Content Provider	IEEE Xplore Digital Library
Author	Srirangarajan, S. Tewfik, A.H.
Copyright Year	2005
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Minnesota Univ. (Srirangarajan, S.; Tewfik, A.H.)
Abstract	This paper addresses ranging in indoor quasi-static sensor environments and presents a time-of-arrival (TOA) based ranging algorithm. A statistical model of the multipath channel in the form of the signal return and noise characterization is derived, and utilized to distinguish signal components from noise. The algorithm then uses multiple signal receptions at each base station, to differentiate between line-of-sight (LOS) and non-LOS components, and to accurately estimate the position of the LOS component in the received multipath signal. The location is estimated through a mathematical programming problem formulation. Using a synthesized bandwidth of 2 GHz, a 4-bit analog-to-digital converter (ADC) and with 5-10 dB signal-to-noise ratio (SNR), range estimation with sub-meter accuracy is achieved. Furthermore, the associated range estimation error does not increase with increase in the transmitter-receiver range
Starting Page	5
Ending Page	3481
File Size	383209
Page Count	3477
File Format	PDF
ISBN	0780394143
DOI	10.1109/GLOCOM.2005.1578419
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-11-28
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless sensor networks Line-of-sight propagation Working environment noise Sensor phenomena and characterization Multipath channels Base stations Mathematical programming Signal synthesis Bandwidth Analog-digital conversion
Content Type	Text
Resource Type	Article

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