A New Modulation for Intrinsically Secure Radio Channel in Wireless Systems |
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Authors: | Lorenzo Mucchi Luca Simone Ronga Leonardo Cipriani |
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Institution: | (1) Faculty of Engineering & Technology, Multimedia University, Jalan Ayer Keroh Lama, Bukit Beruang, 75450 Melaka, Malaysia |
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Abstract: | One of the biggest challenges in RFID (radio frequency identification) large scale deployment, such as in warehouse RFID deployment,
is the positioning of RFID reader antennas to efficiently locate all the tagged objects distributed at RFID reader environment.
This paper has investigated a novel location sensing system based on geometric grid covering algorithm that can use any passive
or active RFID standard for positioning or tracking objects inside buildings. This study involves design of RFID reader antenna
network which focuses on placing the reader antennas on a grid to cover all the tags distributed at two dimensional planes
and position calculation using statistical averages algorithm. The statistical averages algorithm simply computes the location
coordinates of the tagged object by statistical average of the reader antenna’s location. The proposed grid of reader antennas
can assist in minimizing the actual number of reader antennas required for RFID large scale deployment. The proposed prototype
system is a simpler positioning system which presents the solution of placement pattern of RFID reader antennas, gives less
complicated mathematical calculation, and is able to provide a high degree of accuracy. The obtained results show that the
proposed location sensing system can achieve better positioning accuracy as compared to existing positioning system and in
some cases accuracy improvement of about 50% can be reached.
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Keywords: | Indoor positioning Tracking Location sensing RFID reader network |
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