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IEICE Transactions on Electronics 2007 E90-C(6):1299-1303; doi:10.1093/ietele/e90-c.6.1299
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Copyright © 2007 The Institute of Electronics, Information and Communication Engineers

Special Section on Analog Circuits and Related SoC Integration Technologies -- Letters

A Mixed Circuit and System Level Simulation Technique of Collision-Resistant RFID System

Yohei FUKUMIZU1, Naoki GOCHI1, Makoto NAGATA2 and Kazuo TAKI3

1 The authors are with the Graduate School of Science and Technology, Kobe University, Kobe-shi, 657-8501 Japan. E-mail: fukumizu{at}m.ieice.org, 2 The author is with the Department of Computer and Systems Engineering, Kobe University, Kobe-shi, 657-8501 Japan., 3 The author is with AIL Co., Ltd., Tokyo, 164-0012 Japan.


  Abstract

An integrated multi-level simulation environment is developed for a highly collision-resistant RFID system. An analog/mixed-signal (AMS) simulator for a circuit-level description of analog front-end power/signal transmission through electro-magnetic coupling is concurrently connected to a tailored software simulator for system-level description of digital back-end processing of TH-CDMA based anti-collision communication. The feasibility of the RFID system in which more than 1,000 transponders can be identified by a single reader in 400 msec is successfuly explored, under a practical presence of field disturbances such as background noises in communication channels as well as variations of electro-magnetic coupling strengths for power transmission.

Key Words: RFID, anti-collision, TH-CDMA, integrated multi-level simulation environment, behavioral modeling, Verilog-AMS

Manuscript received November 21, 2006. Manuscript revised January 13, 2007.


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