NDLI: Investigation of impact factors for various performances of passive UHF RFID system

Content Provider	IEEE Xplore Digital Library
Author	Choi, J.S. Mingon Kang Elmasri, R. Engels, D.W.
Copyright Year	2011
Description	Author affiliation: Computer Science and Engineering, University of Texas at Arlington, USA (Choi, J.S.; Mingon Kang; Elmasri, R.) \|\| Revere Security, Addison, TX, USA (Engels, D.W.)
Abstract	In this paper, we present causes of variation in performance for passive UHF RFID tags with empirical results in two different environments: practical conditions and an anechoic chamber. We study the critical causes of RSSI ambiguity, such as a posture of tag, and variations among uniform tags. Moreover, in passive UHF RFID systems, Tag-to-Tag interferences affect performance of passive RF tags. When two tags are located close each other, an adjacent tag influences the other tags. This causes increase or decrease of the backscattering communication budgets. According to our empirical results, compared with non-interfered backscattering signal strength in an anechoic chamber, tag-to-tag interference affects the reader received signal strength, such as 5.8dB of excess decrease and 2.5dB of increase, depending on the distance between two tags. We present a new model of backscattered signal strength for passive UHF RFID system under tag-to-tag interference. The variation of excess power volume by the interference depends on an interference coefficient. In order to analyze the impacts of tag-to-tag interference, we show empirical results in the anechoic chamber, then, we model the change of the backscattered signal strength using the second order under-damped system for different tag-to-tag distances and angles.
Starting Page	152
Ending Page	159
File Size	1440557
Page Count	8
File Format	PDF
ISBN	9781457700286
e-ISBN	9781457700279
DOI	10.1109/RFID-TA.2011.6068631
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-09-15
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Antenna measurements Interference coefficient Passive UHF RFID Anechoic chambers Fluctuations Interference Passive RFID tags Tag to Tag Interference Antennas Performance variation
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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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