A novel software-radio-defined passive RFID reading system with real-time collision resolution
by Yuan Sun; Peter J. Hawrylak; Zhi-Hong Mao; Marlin H. Mickle
International Journal of Ad Hoc and Ubiquitous Computing (IJAHUC), Vol. 8, No. 4, 2011

Abstract: The ISO 18000-6C standard defines the air interface of UHF passive RFID tags. According to the timing specification in this standard, a conforming interrogator (or reader) shall complete the inventory round for tags in a soft real time. This research develops a software-defined radio reconfigurable FPGA-based interrogator for the standard to address the stringent time constraints of the tag-reader handshakes. This flexible interrogator is fully customisable and can be utilised for typical applications including standard conformance test automation and large-scale programming for tag groups. Furthermore, on-chip signal processing allows for real-time online collision resolution in a tag-intensive environment and can significantly improve the system reading efficiency.

Online publication date: Thu, 10-Nov-2011

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