Separation of Multiple Passive RFID Signals Using Software Defined Radio
Name
Shen-2009-Separation of Multiple Passive RFID Signals Using Software Defined Radio.pdf
Size
7.64 MB
Format
Adobe PDF
Checksum (MD5)
813be724eadad2653c756efb281da610
Author(s)
Lippman, Andrew B.
Wang, Junyu
Reed, David P.
Shen, Dawei
Woo, Grace
Date Issued
May 2009
Journal
2009 IEEE International Conference on RFID
Publisher
Institute of Electrical and Electronics Engineers
Citation
Dawei Shen et al. “Separation of multiple passive RFID signals using Software Defined Radio.” RFID, 2009 IEEE International Conference on. 2009. 139-146. © 2009Institute of Electrical and Electronics Engineers.
Version
Final published version
Abstract
We present a practical design of an RFID reader that is capable of reading multiple passive tags through joint decoding. The reader is implemented and analyzed using the GNU Software Defined Radio system. We use low frequency (LF) 125 kHz commodity MIT ID cards in the experiment, and discuss extensions to decoding high frequency (HF) tags. This design reconsiders opportunities available in the lower layers of RFID design. Physical layer communication is analyzed rigorously and a complete system design is introduced as a result. We demonstrate this by exploring the differences in amplitudes and phase offsets among signal components, multiple tags can be separated and efficiently decoded using joint decoding. System performance is analyzed with both implementation and simulation. Based on these results, we summarize opportunities for improving industrial auto-collision algorithms with multiple-tag decoding capability.
MIT Department
Massachusetts Institute of Technology. Media Laboratory
Program in Media Arts and Sciences (Massachusetts Institute of Technology)
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1109/RFID.2009.4911203
