Bistatic backscatter radio for tag read-range extension

John Kimionis, Aggelos Bletsas, John N. Sahalos

Research output: Chapter in Book/Report/Conference proceedingConference contribution

20 Citations (Scopus)

Abstract

This work examines the idea of dislocating the carrier transmission from the tag-modulated carrier reception, i.e. bi-static rather than mono-static backscatter radio. In that way, more than one carrier transmitters can be distributed in a given geographical area and illuminate a set of RF tags/sensors that modulate and scatter the received carrier towards a single software-defined receiver. The increased number of carrier transmitters and their distributed nature assists tags to be potentially located closer to one carrier transmitter and thus, improves the power of the scattered signals towards the receiver. Specifically, this work a) carefully derives near-optimal detectors for bi-static backscatter radio and on/off keying (OOK) tag modulation (which is widely used in commercial tags), b) analytically calculates their bit error rate (BER) performance, and c) experimentally tests them in practice with a custom bistatic backscatter radio link. As a collateral dividend, it is shown that the non-linear processing of the proposed receivers requires certain attention on the utilized tag design principles, commonly overlooked in the literature, validating recently reported theoretical results on the microwave domain.

Original languageEnglish
Title of host publication2012 IEEE International Conference on RFID-Technologies and Applications, RFID-TA 2012
Pages356-361
Number of pages6
DOIs
Publication statusPublished - 2012
Event2012 IEEE International Conference on RFID-Technologies and Applications, RFID-TA 2012 - Nice, France
Duration: 5 Nov 20127 Nov 2012

Other

Other2012 IEEE International Conference on RFID-Technologies and Applications, RFID-TA 2012
CountryFrance
CityNice
Period5/11/127/11/12

Keywords

  • Bistatic
  • low-cost sensors
  • receiver
  • RFID
  • software-defined radio

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  • Cite this

    Kimionis, J., Bletsas, A., & Sahalos, J. N. (2012). Bistatic backscatter radio for tag read-range extension. In 2012 IEEE International Conference on RFID-Technologies and Applications, RFID-TA 2012 (pp. 356-361). [6404546] https://doi.org/10.1109/RFID-TA.2012.6404546