NDLI: Backscatter phase evaluation based on scatterplot cluster detection

Content Provider	IEEE Xplore Digital Library
Author	Povalac, A. Sebesta, J.
Copyright Year	2014
Description	Author affiliation: Dept. of Radio Electron., Brno Univ. of Technol., Brno, Czech Republic (Povalac, A.; Sebesta, J.)
Abstract	The paper is focused on methods for the evaluation of backscatter RFID channel parameters. It shows how to obtain the channel transfer function (CTF) using a set of measurements on discrete frequencies with common passive EPC Gen2 RFID tags. The main contribution lies in the received signal phase evaluation with low ambiguity, which is achieved with cluster detection in the constellation diagram of backscattered signal. Experimental results for several tags with various measurement setups are presented and discussed. As a final result, the CTF is transformed to the channel impulse response (CIR), which provides an estimation of signal propagation paths in the environment. The presented method provides higher reliability and accuracy for existing phase-based ranging principles, especially in narrowband systems without strong multipath signal propagation.
Sponsorship	IEEE Czechoslovakia Sect.
Starting Page	1
Ending Page	4
File Size	420515
Page Count	4
File Format	PDF
ISBN	9781479937141
e-ISBN	9781479937158
DOI	10.1109/Radioelek.2014.6828437
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-04-15
Publisher Place	Slovakia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Antenna measurements phase Phase measurement Estimation RFID backscatter Frequency measurement CIR RTLS Constellation diagram UHF CTF cluster detection Radiofrequency identification Backscatter
Content Type	Text
Resource Type	Article

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