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Sensors 2017, 17(9), 2081; https://doi.org/10.3390/s17092081

Wireless Technology Recognition Based on RSSI Distribution at Sub-Nyquist Sampling Rate for Constrained Devices

Ghent University-imec, IDLab, Department of Information Technology, B-9052 Gent, Belgium
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Received: 17 July 2017 / Revised: 1 September 2017 / Accepted: 7 September 2017 / Published: 12 September 2017
(This article belongs to the Special Issue Next Generation Wireless Technologies for Internet of Things)
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Abstract

Driven by the fast growth of wireless communication, the trend of sharing spectrum among heterogeneous technologies becomes increasingly dominant. Identifying concurrent technologies is an important step towards efficient spectrum sharing. However, due to the complexity of recognition algorithms and the strict condition of sampling speed, communication systems capable of recognizing signals other than their own type are extremely rare. This work proves that multi-model distribution of the received signal strength indicator (RSSI) is related to the signals’ modulation schemes and medium access mechanisms, and RSSI from different technologies may exhibit highly distinctive features. A distinction is made between technologies with a streaming or a non-streaming property, and appropriate feature spaces can be established either by deriving parameters such as packet duration from RSSI or directly using RSSI’s probability distribution. An experimental study shows that even RSSI acquired at a sub-Nyquist sampling rate is able to provide sufficient features to differentiate technologies such as Wi-Fi, Long Term Evolution (LTE), Digital Video Broadcasting-Terrestrial (DVB-T) and Bluetooth. The usage of the RSSI distribution-based feature space is illustrated via a sample algorithm. Experimental evaluation indicates that more than 92% accuracy is achieved with the appropriate configuration. As the analysis of RSSI distribution is straightforward and less demanding in terms of system requirements, we believe it is highly valuable for recognition of wideband technologies on constrained devices in the context of dynamic spectrum access. View Full-Text
Keywords: technology recognition; RSSI; multi-modal distribution; experimental study; constrained devices; NGWN technology recognition; RSSI; multi-modal distribution; experimental study; constrained devices; NGWN
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Liu, W.; Kulin, M.; Kazaz, T.; Shahid, A.; Moerman, I.; De Poorter, E. Wireless Technology Recognition Based on RSSI Distribution at Sub-Nyquist Sampling Rate for Constrained Devices. Sensors 2017, 17, 2081.

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