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Experimental Study of Smoothing Modifications of the MUSIC Algorithm for Direction of Arrival Estimation in Indoor Environments
IEEE Access. 2021. Vol. 9. P. 153767–153774.
Nowadays, the Direction of Arrival (DoA) estimation problem attracts much attention because of emerging use cases for wireless networks. DoA is beneficial for Reconfigurable IntelligentSurfaces, indoor localization, and various navigation and sensing applications, such as gesture recognition and home monitoring. The Multiple Signal Classification (MUSIC) algorithm is very promising for DoAestimation because it provides better accuracy than the other algorithms and remains simple enough to implement in hardware. MUSIC has many modifications designed to achieve better accuracy in indoor environments by combining and smoothing several measurements. However, such modifications have been implemented in equipment with different capabilities. Consequently, the modifications have never been compared under identical conditions. The paper addresses this issue, provides a classification of existing smoothing modifications of MUSIC, and proposes new ones not considered in the literature yet. All of them are compared in real Wi-Fi networks. For that, a testbed is designed that allows automatic measurements in multiple experiments with different positions of devices. A new calibration procedure is created to achieve higher accuracy, and the testbed is validated in an anechoic chamber. Finally, the paper suggeststhe preferable smoothing modifications of MUSIC for finding the DoA.
Keywords: Wi-FismoothingDirection of Arrival EstimationMUSICmultipath propagationindoor localization
Publication based on the results of:
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Материалы сборника Шестнадцатой Международной конференции «Новые информационные
технологии в исследовании сложных структур» (Москва, 21–25 сентября 2026 г.) ориентированы на
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прикладных предметных областей. В издание вошли результаты исследований, посвящённые
моделированию дискретных и стохастических структур управления и связи, разработке
высокопроизводительных вычислительных и телекоммуникационных систем, а также вопросам
цифровой трансформации образования, архитектурно-градостроительного проектирования,
экологического ...
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© 2020 IEEE.Non-orthogonal multiple access (NOMA) is a key technology for future wireless systems. Keeping the number of antennas on the devices unchanged, NOMA increases the spectral efficiency of the wireless system and raises the aggregated system throughput. For this reason, NOMA is a very attractive technology for implementation in future Wi-Fi standards that will ...
Added: October 26, 2022
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© 2021 IEEE.Non-Orthogonal Multiple Access (NOMA) is a promising technology for future Wi-Fi, In uplink NOMA, stations with different channel conditions transmit simultaneously at the same frequency by splitting the signal by power level. Since Wi-Fi uses random access, the implementation of uplink NOMA in Wi-Fi faces many challenges. The paper presents a data transmission ...
Added: October 26, 2022