Feasibility Study of Practical AoA Estimation Using Compressed CSI on Commercial WLAN Devices
نویسندگان
چکیده
Wireless local area network (WLAN)-based localization is key for advanced indoor Internet-of-Things and embedded sensor applications. To further improve the accuracy of localization, attention has been focused on WLAN-based using channel-state information (CSI) in addition to existing provided by received signal strength (RSS). For easy low cost installation wireless sensing, sensing based standardized protocols commercial WLAN devices, such as IEEE 802.11ac 802.11ax, necessary. There are few papers demonstrating AoA estimation results devices CSI. Therefore, we propose a practical method estimating solve four problems: 1) compressed CSI, which cannot be used directly, 2) antenna wireline, phase changes depending length 3) spacing, distance between antennas places restriction estimation, 4) individuality, actual MIMO communication have different characteristics. We implemented proposed evaluated it lecture room shield tent. The indicate that can estimate with an average error 9.1° reduce 85.4 % compared straightforward approach.
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ژورنال
عنوان ژورنال: IEEE Access
سال: 2022
ISSN: ['2169-3536']
DOI: https://doi.org/10.1109/access.2022.3159332