NDLI: Reading Rate Improvement for UHF RFID Systems with Massive Tags by the Q Parameter

Content Provider	Springer Nature Link
Author	Luh, Yuan Ping Liu, Yin Chang
Copyright Year	2010
Abstract	To implement an ultra high frequency (UHF) RFID system, the first problem that an enterprise faces is the assurance of stable and extremely high reading rates. Empirical investigations indicated many hardware and environment factors can affect the reading rates. Unfortunately, even if all of the hardware and environment factors have been resolved, reading a large number of RFID tags in a single run is still a challenge. For RFID systems with massive tags, signal collision is the major factor to reduce system reading rate. To diminish the influence induced by signal collision, this study examined the anti-collision technology applied in EPCglobal UHF Gen II standards and proposed the method of adapting the Q parameter of control module in UHF RFID interrogator. Finally, we conducted field simulation to monitor relative reading rates under different conditions with different tag numbers, speeds passing through portal and Q values. Following by experimental results, this study provided the criteria to determine optimal Q value by activating system. With proper Q value, stable and extremely high reading rates in one-time reading of a large number of RFID tags (100 and above) can be achieved.
Starting Page	147
Ending Page	157
Page Count	11
File Format	PDF
ISSN	09296212
Journal	Wireless Personal Communications
Volume Number	59
Issue Number	1
e-ISSN	1572834X
Language	English
Publisher	Springer US
Publisher Date	2010-11-30
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	UHF Reading rate Massive tags Signal collision Q parameter Communications Engineering, Networks Signal, Image and Speech Processing Computer Communication Networks
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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