Tag read enhancement using unsynchronized signal from adjacent readers in multi-cell RFID system

Sicheng Zou, Michael Crisp, Sithamparanathan Sabesan, Abdelmoula Bekkali, Abdullah Kadri, Richard V. Penty, Ian H. White

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

1 Citation (Scopus)

Abstract

This paper addresses the interference issue in a passive multi-cell radio frequency identification (RFID) system. Instead of considering the negative effect of interfering RF signals from adjacent readers, we investigate its constructive effect in providing extra RF power to tags in the cell of the desired reader system. Through detailed simulation and experimental analysis, it is found that the unsynchronised signal from neighbouring readers can be utilized to activate marginal tags through enhancing power delivery. This results in improved tag received signal strength indicator (RSSI). In addition, it is found that the overlap zone between two RFID cells is not as vulnerable to interference as one might think. In fact, the adjacent reader may facilitate the desired reader to read more tags in the overlapping zone, although a longer inventory period may be required. We believe these findings might provide a new insight into the interference effect on multi-cell RFID system and be applied to future medium access control (MAC) protocols.

Original languageEnglish
Title of host publication2014 IEEE RFID Technology and Applications Conference, RFID-TA 2014
PublisherIEEE
Pages62-67
Number of pages6
ISBN (Electronic)9781479946808
DOIs
Publication statusPublished - 23 Oct 2014
Event2014 IEEE RFID Technology and Applications Conference, RFID-TA 2014 - Tampere, Finland
Duration: 8 Sep 20149 Sep 2014

Conference

Conference2014 IEEE RFID Technology and Applications Conference, RFID-TA 2014
CountryFinland
CityTampere
Period8/09/149/09/14

Keywords

  • continuous wave (CW)
  • interference
  • marginal tags
  • multi-cell
  • overlap zone
  • Passive radio frequency identification (RFID)
  • Rician model

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Computer Science Applications
  • Electrical and Electronic Engineering

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