Design and Experimental Evaluation of a Bluetooth 5.1 Antenna Array for Angle-of-Arrival Estimation

• Type: Article in International Conference Proceedings Book
• Date: 2022

Authors

Nuno Paulino (Author) FEUP; L. M. Pessoa (Author) FEUP; Branquinho, A (Author) Other; Gonçalves, E (Author) Other

Conference proceedings International

Title: 2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2022

Pages: 625-630

13th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2022

20 July 2022 through 22 July 2022

Indexing

Scopus

Other information

Authenticus ID: P-00X-BJN

DOI: 10.1109/csndsp54353.2022.9907908

Abstract (EN): One the of the applications in the realm of the Internet-of-Things (IoT) is real-time localization of assets in specific application environments where satellite based global positioning is unviable. Numerous approaches for localization relying on wireless sensor mesh systems have been evaluated, but the recent Bluetooth Low Energy (BLE) 5.1 direction finding features based on Angle-of-Arrival (AoA) promise a low-cost solution for this application. In this paper, we present an implementation of a BLE 5.1 based circular antenna array, and perform two experimental evaluations over the quality of the retrieved data sampled from the array. Specifically, we retrieve samples of the phase value of the Constant Tone Extension which enables the direction finding functionalities through calculation of phase differences between antenna pairs. We evaluate the quality of the sampled phase data in an anechoic chamber, and in a real-world environment using a setup composed of four BLE beacons. © 2022 IEEE.

Language: English

Type (Professor's evaluation): Scientific