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author:

Yuan, Y. (Yuan, Y..) [1] | Liu, C. (Liu, C..) [2] | Zhou, L. (Zhou, L..) [3] | Xu, Z. (Xu, Z..) [4] | Liu, Z. (Liu, Z..) [5] | Ma, K. (Ma, K..) [6]

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Scopus

Abstract:

With the rapid development of Internet of Things (IoT) technology, location-based services (LBSs) are gaining significant attention for their potential applications. Among the various LBS methods, Angle of Arrival (AOA) is attracting attention due to its simplicity and ease of implementation. However, in practical applications, the BLE-based two-dimensional antenna array encounters the problem of Constant Tone Extension frequency deviation (FD), which introduces phase impairments. Additionally, the support of Periodical Advertising (PA) event in Bluetooth poses a challenge for ensuring excellent angle estimation performance in periodic physical (PHY) channels, as the channel overlaps with the WIFI frequency band. To address these challenges, we propose a hierarchical angle estimation (HAE) framework based on the phase difference of single reference antenna. The framework comprises three layers: the data acquisition layer, the phase restoration layer, and the multi-channel estimation layer with angle collection solver. The HAE framework enables phase correction and accurate estimation over periodic PHY channels. We validate the proposed method on a real hardware system and demonstrate that it achieves a high level of precision and stability in the estimation of angles, which makes it suitable for practical LBSs applications in challenging environments. IEEE

Keyword:

Accuracy Angle of Arrival (AOA) Antennas Bluetooth Bluetooth low energy (BLE) Channel estimation Estimation frequency deviation phase difference phase restoration Switches Vectors

Community:

  • [ 1 ] [Yuan Y.]Institute of Electrical Engineering, Yanshan University, Qinhuangdao, China
  • [ 2 ] [Liu C.]Institute of Electrical Engineering, Yanshan University, Qinhuangdao, China
  • [ 3 ] [Zhou L.]Institute of Electrical Engineering, Yanshan University, Qinhuangdao, China
  • [ 4 ] [Xu Z.]School of Electrical Engineering and Automation, Fuzhou University, Fuzhou, China
  • [ 5 ] [Liu Z.]Institute of Electrical Engineering, Yanshan University, Qinhuangdao, China
  • [ 6 ] [Ma K.]Institute of Electrical Engineering, Yanshan University, Qinhuangdao, China

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Source :

IEEE Transactions on Instrumentation and Measurement

ISSN: 0018-9456

Year: 2024

Volume: 73

Page: 1-1

5 . 6 0 0

JCR@2023

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ESI Highly Cited Papers on the List: 0 Unfold All

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Chinese Cited Count:

30 Days PV: 1

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