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HYBRID RFID - OWC WITH AN ADAPTIVE PRIORITY TRANSMISSION SCHEME

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Author(s): Wasinee Noonpakdee | Jiang Liu | Shigeru Shimamoto

Journal: International Journal of Computer Networks & Communications
ISSN 0975-2293

Volume: 3;
Issue: 5;
Start page: 135;
Date: 2011;
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Keywords: RFID | Optical Wireless Communications | image sensors | CCR

ABSTRACT
This paper presents hybrid RFID – OWC with an adaptive priority transmission scheme. In this model, we apply optical wireless communication (OWC) for transmitting confidential information to a radio frequency identification (RFID) reader. Since OWC provides high security, this improves the security of our system. The priority of information is assigned according to the level of confidentiality and significance of the information. The more confidential information is transmitted by OWC with adaptivedata rate, and the rest of the information (if there is any) is transmitted by RFID. The energy harvesting of RFID is used to modulate the reflected optical signal by Corner Cube Retroreflector (CCR). Bit error rate (BER) is analyzed regarding the half-power angle of the transmitter, optical transmit power, datarate, and the angle between tag and reader. The analytical results indicate that by employing the adaptive priority transmission scheme, the required BER of OWC transmission is achieved.
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