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UHF-RFID-Based Localization Using Spread-Spectrum Signals

Authors:
Andreas Loeffler

Keywords: Radiofrequency identification, Spread spectrum, Wideband, Communication channels.

Abstract:
Determining the range between RFID tags and readers, particularly in the UHF region, is subject of current research topics. This paper presents a simulation-based approach, using spread-spectrum techniques to reckon the range between UHF RFID tags and a reader system. The UHF-RFID reader reads out the surrounding tags within its reading range, with each tag containing information about its own location. Accordingly, the reader reads the location of each tag, hence being able to generate a basic map. To define the most likely position of the reader itself, it must estimate the distance to each of the RFID tags. This estimation is provided through a spread-spectrum approach utilizing the complete UHF bandwidth of approximately 150 MHz to achieve a high positioning resolution. This work proposes particular distance estimation techniques and presents results for such distance measurements.

Pages: 261 to 266

Copyright: Copyright (c) IARIA, 2011

Publication date: January 23, 2011

Published in: conference

ISSN: 2308-4413

ISBN: 978-1-61208-113-7

Location: St. Maarten, The Netherlands Antilles

Dates: from January 23, 2011 to January 28, 2011