Wi-Fi Direction Finding With Frequency-Scanned Antenna and Channel-Hopping Scheme

A novel and simple technique for Direction of Arrival (DoA) estimation in 802.11 Wi-Fi networks is proposed. It is based on the use of a dual-port frequency-beam scanning antenna, which is connected to single MIMO access point. By simply performing a channel hopping scheme and acquiring Received Sig...

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Veröffentlicht in:	IEEE sensors journal 2022-03, Vol.22 (6), p.5210-5222
Hauptverfasser:	Gil-Martinez, Alejandro, Poveda-Garcia, Miguel, Lopez-Pastor, Jose Antonio, Sanchez-Aarnoutse, Juan Carlos, Gomez-Tornero, Jose Luis
Format:	Artikel
Sprache:	eng
Schlagworte:	Antennas channel hopping Direction finding Direction of arrival direction of arrival (DoA) Direction-of-arrival estimation Directive antennas Estimation Field of view Frequency hopping frequency-scanning antenna Localization with 802.11 MIMO communication Ports (computers) Signal strength Wireless fidelity
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Beschreibung
Zusammenfassung:	A novel and simple technique for Direction of Arrival (DoA) estimation in 802.11 Wi-Fi networks is proposed. It is based on the use of a dual-port frequency-beam scanning antenna, which is connected to single MIMO access point. By simply performing a channel hopping scheme and acquiring Received Signal Strength Information (RSSI) from each channel, the DoA can be estimated in a wide Field of View of 180° with a mean angular error of 5°. Due to its simplicity, a single commodity Wi-Fi AP can be used without the need of Channel State Information (CSI), or complex electronically reconfigurable or mechanically revolving antennas.
ISSN:	1530-437X 1558-1748
DOI:	10.1109/JSEN.2021.3122232