Signal Coding in Physical Layer Separation for RFID Tag Collision

DOI

10.2991/wcnme-19.2019.3How to use a DOI?

Keywords

RFID; tag collision; Miller; FM0

Abstract

In an ultra-high-frequency (UHF) radio frequency identification (RFID) system, direct separation for tag collision on a physical layer can improve the efficiency of the tag identification. Many coding methods can be adopted in the RFID system. Different codes have different link frequencies and have an impact on the separation on the physical layer. This paper analyses the performance of FM0 and Miller code for the physical-layer separation. Firstly, collision tag signals are mapped to an IQ constellation plane, and then a clustering algorithm and a matched filter are performed to separate the collision signal. Finally, the separated signal will be recovered via Miller and FM0, respectively. Experimental results show that, Miller code has better performance of bit error rate (BER) and higher separation efficiency for tag collision than FM0 code when the subcarrier frequency of the both codes is the same.

Copyright

© 2019, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yi Li
AU  - Haifeng Wu
AU  - Yu Zeng
PY  - 2019/06
DA  - 2019/06
TI  - Signal Coding in Physical Layer Separation for RFID Tag Collision
BT  - Proceedings of the 2019 International Conference on Wireless Communication, Network and Multimedia Engineering (WCNME 2019)
PB  - Atlantis Press
SP  - 8
EP  - 13
SN  - 2352-538X
UR  - https://doi.org/10.2991/wcnme-19.2019.3
DO  - 10.2991/wcnme-19.2019.3
ID  - Li2019/06
ER  -