Modified RSSI Technique for the Localization of Passive UHF RFID Tags in LOS Channels

This paper presents a new approach for improving the localization of passive ultra high frequency radio frequency identifi-cation (RFID) tags in line-of-sight channels using a received signal strength indicator (RSSI) technique. In practice, thecomplex propagation in the indoor channels and also the variability of some parameters of the RFID equipment itself intro-ducessignificantamountoferrorswhentheoperationoflocalizationcarriesouttheRSSItechnique.Indeed,asthecalculationis based on a trilateration, the incomplete knowledge of the propagation and some parameters of RFID tags leads to estimatedistanceswhicharewrong,andthereforethelocalizationcannotbecorrect.Inordertoovercomethisdrawback,theproposedmethodtakesintoaccountthepresenceofunknownparametersrelyingonadichotomousalgorithmwhichincludesprobabil-istic parameters. The presented simulation results are in good agreement with the expected theoretical results. Experimentalresults show that the proposed method strongly increases the accuracy of the estimated position of tags. Compared to otherapproaches based on the improvement of the RSSI technique, this method does not require too much complexity in terms ofmaterials (no need for specific architecture or reference tags) and processing (fast and simple algorithm).Keywords: RFID and sensors, Antennas and propagation for wireless systems

[1]  Roy Want,et al.  Enabling ubiquitous sensing with RFID , 2004, Computer.

[2]  Yunhao Liu,et al.  LANDMARC: Indoor Location Sensing Using Active RFID , 2004, Proceedings of the First IEEE International Conference on Pervasive Computing and Communications, 2003. (PerCom 2003)..

[3]  Wolfram Burgard,et al.  Modeling RFID signal strength and tag detection for localization and mapping , 2009, 2009 IEEE International Conference on Robotics and Automation.

[4]  M. Matsumoto,et al.  RFID Indoor Positioning Based on Probabilistic RFID Map and Kalman Filtering , 2007 .

[5]  Min Wang,et al.  RESEARCH OF INDOOR LOCATIONMETHOD BASED ON THE RFID TECHNOLOGY , 2008 .

[6]  M. Bouet,et al.  RFID tags: Positioning principles and localization techniques , 2008, 2008 1st IFIP Wireless Days.

[7]  Yvan Duroc,et al.  RFID potential impacts and future evolution for green projects , 2012 .

[8]  P.V. Nikitin,et al.  Theory and measurement of backscattering from RFID tags , 2006, IEEE Antennas and Propagation Magazine.

[9]  T. Sanpechuda,et al.  A review of RFID localization: Applications and techniques , 2008, 2008 5th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology.

[10]  K. V. S. Rao,et al.  Phase based spatial identification of UHF RFID tags , 2010, 2010 IEEE International Conference on RFID (IEEE RFID 2010).

[11]  Moeness G. Amin,et al.  Principles and Techniques of RFID Positioning , 2010 .

[12]  G.D. Durgin,et al.  Complete Link Budgets for Backscatter-Radio and RFID Systems , 2009, IEEE Antennas and Propagation Magazine.

[13]  Annalisa Milella,et al.  RFID tag localization by using adaptive neuro-fuzzy inference for mobile robot applications , 2012, Ind. Robot.

[14]  Ivan Stojmenovic,et al.  RFID Systems: Research Trends and Challenges , 2011 .

[15]  Moeness G. Amin,et al.  Multifrequency-based range estimation of RFID Tags , 2009, 2009 IEEE International Conference on RFID.

[16]  Ville Viikari,et al.  Ranging of UHF RFID Tag Using Stepped Frequency Read-Out , 2010, IEEE Sensors Journal.

[17]  Constantine A. Balanis,et al.  Antenna Theory: Analysis and Design , 1982 .

[18]  Gabriel Robins,et al.  Object localization using RFID , 2010, IEEE 5th International Symposium on Wireless Pervasive Computing 2010.