USRP and LabVIEW: A flexible software defined radio-based UHF RFID reader

Abstract

This paper presents a UHF RFID Reader designed as a learning tool for experimentation. Radio frequency identification (RFID), as one of significant techniques applied in the internet of things (IoT) domain, is widely used in recognition and item-level tracking. Compare to the commercial RFID Reader with fixed circuits and physical/ MAC layer parameters, the UHF RFID Reader presented in this paper is based on software-defined radio platform to achieve researching of reader performance with flexible physical/MAC layer parameters. The reader is built using NI USRP software radio platform in conjunction with software based on NI LabVIEW. Parameters can be modified flexibly and easily by user from front panel of this reader. Process of transmitting and receiving on reader can be monitored from front panel clearly as well. 16-bit random number sequence responded by a commercial Tag after a correct Query command can be detected within half meter using this UHF Reader. All the designs of this reader are based on EPC Gen-2 RFID protocol, any further research based on this reader can be easily connected and tested with commercial Tags.

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ORCID for Robert Maunder: orcid.org/0000-0002-7944-2615

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