• KSII Transactions on Internet and Information Systems
    Monthly Online Journal (eISSN: 1976-7277)

Implementation of Bistatic Backscatter Wireless Communication System Using Ambient Wi-Fi Signals


Abstract

This paper presents the architecture design, implement, experimental validation of a bistatic backscatter wireless communication system in Wi-Fi network. The operating principle is to communicate a tag’s data by detecting the power level of the power modulated Wi-Fi packets to be reflected or absorbed by backscatter tag, in interconnecting with Wi-Fi device and Wi-Fi AP. This system is able to provide the identification and sensor data of tag on the internet connectivity without requiring extra device for reading data, because this uses an existing Wi-Fi AP infrastructure. The backscatter tag consists of Wi-Fi energy harvesting part and a backscatter transmitter/a power-detecting receiver part. This tag can operate by harvesting and generating energy from Wi-Fi signal power. Wi-Fi device decodes information of the tag data by recognizing the power level of the backscattered Wi-Fi packets. Wi-Fi device receives the backscattered Wi-Fi packets and generates the tag’s data pattern in the time-series of channel state information (CSI) values. We believe that this system can be achieved wireless connectivity for ultra- low-power IoT and wearable device.


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Cite this article

[IEEE Style]
Young-Han Kim, Hyun-Seok Ahn, Changseok Yoon, Yongseok Lim, Seung-ok Lim and Myung-Hyun Yoon, "Implementation of Bistatic Backscatter Wireless Communication System Using Ambient Wi-Fi Signals," KSII Transactions on Internet and Information Systems, vol. 11, no. 2, pp. 1250-1264, 2017. DOI: 10.3837/tiis.2017.02.036

[ACM Style]
Kim, Y., Ahn, H., Yoon, C., Lim, Y., Lim, S., and Yoon, M. 2017. Implementation of Bistatic Backscatter Wireless Communication System Using Ambient Wi-Fi Signals. KSII Transactions on Internet and Information Systems, 11, 2, (2017), 1250-1264. DOI: 10.3837/tiis.2017.02.036