6-Axis Sensor Assisted Low Complexity High Accuracy-Visible Light Communication Based Indoor Positioning System
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概要
- 論文の詳細を見る
The authors focus on the improvement of Visible Light Communication Identification (VLID) system that provides positioning information via LED light bulb, which is a part of Visible Light Communication (VLC) system. The conventional VLID system provides very low positioning estimation accuracy at room level. In our approach, neither additional infrastructure nor modification is required on the transmitter side. On the receiver side, 6-axis sensor is embedded to provide 3-axis of Azimuth and 3-axis of Tilt angulations information to perform positioning estimation. We verify the proposed system characteristics by making both empirical and numerical analysis, to confirm the effectiveness of proposed system. We define two words to justify the characteristic of the proposed system, which are Field-of-View (FOV: ψc) Limit and Sensitivity (RXS) Limit. Both FOV and Sensitivity Limits have crucial impact on positioning estimation accuracy. Intuitively, higher positioning accuracy can be achieved with smaller FOV configuration in any system that has FOV. Conversely, based on system characteristics of VLID, we propose a positioning estimation scheme, namely Switching Estimated Receiver Position (SwERP) yields high accuracy even with wide FOV configuration. Cumulative Distribution Function (CDF) of error distance and Root Mean Square of Error Distance (RMSED) between experimental positions and estimated receiver positions are used to indicate the system performance. We collected 440 samples from 3 receivers FOV configurations altogether 1320 samples within the experimental area of 1200mm × 5000mm × 2050mm. The results show that with the proposed scheme, the achievable RMSEDs are in the range of 298 and 463mm under different FOV configurations, which attained the maximum accuracy improvement over 80% comparing to the one without positioning estimation scheme. The proposed systems achievable accuracy does not depend on transmitters orientation; only one transmitter is required to perform positioning estimation.
- （社）電子情報通信学会の論文
- 2010-11-01
著者
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NAKAGAWA Masao
Keio University
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NAKAGAWA Masao
Department of Information and Computer Science, Keio University
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Ohtsuki T
Faculty Of Science And Technology Keio University
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SERTTHIN Chinnapat
Dept. of Information and Computer Science, Keio University
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NAKAGAWA Masao
Dept. of Information and Computer Science, Keio University
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Sertthin Chinnapat
Department Of Information And Computer Science Faculty Of Science And Technology Keio University
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Nakagawa Masao
Department Of Information And Computer Science Keio University
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Ohtsuki Tomoaki
Dept. Of Infomiation And Computer Science Faculty Of Science And Technology Keio University
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Sertthin Chinnapat
Dept. Of Infomiation And Computer Science Faculty Of Science And Technology Keio University
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Ohtsuki Tomoaki
Dept. Of Electrical Engineering Science University Of Tokyo
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