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Performance Evaluation of the Angle of Arrival of LoRa Signals under Interference

Abstract : Tracking objects in indoor is always a challenge for a variety of Internet of Things (IoT) applications. Nowadays, many indoor tracking applications use Low-Power Wide-Area Networks (LPWAN) for Machine-to-Machine (M2M) communication. LoRa is a promising LPWAN radio communication technology designed for wide-area coverage and low-power embedded IoT devices. The objective of this paper is to evaluate the performance of the Angle of Arrival (AoA) direction finding approach in an indoor environment. The AoA performance of the LoRa signal is evaluated using different modulation settings, including Channel Bandwidth (BW) and spreading factor (SF). We measure the AoA accuracy of the LoRa signal using an individual Universal Software Radio Peripheral (USRP) B210, Software Defined Radio (SDR) receiver with the help of the GNU radio software development toolkit. In addition, a new approach to measure the AoA of LoRa signal under interference is investigated. We show that by using the Autocorrelation function combined with our direction finding algorithm, the detection and measurement of two simultaneous receptions is possible. The entire experimental setup was implemented in our indoor office environment. Index Terms-Long-Range (LoRa), Low-Power Wide-Area Networks (LPWANs), Software Defined Radio (SDR), Angle of Arrival (AoA).
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https://ut3-toulouseinp.hal.science/hal-03693641
Contributor : Thierry Val Connect in order to contact the contributor
Submitted on : Monday, June 13, 2022 - 8:23:34 AM
Last modification on : Monday, July 4, 2022 - 8:49:13 AM

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  • HAL Id : hal-03693641, version 1

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Hussein Zeaiter, Oumaya Baala, Francois Spies, Val Thierry. Performance Evaluation of the Angle of Arrival of LoRa Signals under Interference. 9th IEEE International Conference on Communications and Electronics (ICE 2022), IEEE, Jul 2022, Nha Trang, Vietnam. ⟨hal-03693641⟩

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