NDLI: Interference Helps to Equalize the Read Range and Reduce False Positives of Passive RFID Tags

Content Provider	IEEE Xplore Digital Library
Author	Krigslund, R. Popovski, P. Pedersen, G.F. Olesen, K.
Copyright Year	1982
Abstract	In various applications of radio frequency identification (RFID) systems, a reader should reliably get the ID of the tags that are within a bounded proximity region, termed the interrogation zone. This gives rise to two types of errors: 1) false negative detections (FNDs), when tags within the intended interrogation zone cannot be read, and 2) false positive detections (FPDs), when tags outside the zone can be read. The detuning effect experienced from the object a tag is attached to exacerbates the occurrence of FND. Solving FNDs by increasing the reader power increases the probability of FPDs for tags outside the zone. Hence, the design of an interrogation zone poses a tradeoff between readability inside versus outside the desired zone. We present a novel method to reduce the probability of FNDs and FPDs and practically equalize the achievable range for tags experiencing detuning. We propose to impose intentional interference on the communication between reader and tag. The expected effects of the proposed method are evaluated using experimental measurements. The results are positive, showing a sharp edge of the interrogation zone and a strong equalization of the range of tuned and detuned tags. Hence, it is concluded that by imposing interference enables the design of well-defined interrogation zones for passive RFID systems.
Sponsorship	IEEE Industrial Electronics Society
Starting Page	4821
Ending Page	4830
Page Count	10
File Size	1296206
File Format	PDF
ISSN	02780046
Volume Number	59
Issue Number	12
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-12-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Interference Signal to noise ratio Antenna measurements Radiofrequency identification Interferometry Fading channels radio interferometry intelligent sensors
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Electrical and Electronic Engineering Computer Science Applications

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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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
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