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• W2780197004 abstract "To improve the precision of indoor positioning and actualize three-dimensional positioning, a reversed indoor positioning system based on visible light communication (VLC) using genetic algorithm (GA) is proposed. In order to solve the problem of interference between signal sources, CDMA modulation is used. Each light-emitting diode (LED) in the system broadcasts a unique identity (ID) code using CDMA modulation. Receiver receives mixed signal from every LED reference point, by the orthogonality of spreading code in CDMA modulation, ID information and intensity attenuation information from every LED can be obtained. According to positioning principle of received signal strength (RSS), the coordinate of the receiver can be determined. Due to system noise and imperfection of device utilized in the system, distance between receiver and transmitters will deviate from the real value resulting in positioning error. By introducing error correction factors to global parallel search of genetic algorithm, coordinates of the receiver in three-dimensional space can be determined precisely. Both simulation results and experimental results show that in practical application scenarios, the proposed positioning system can realize high precision positioning service." @default.
• W2780197004 created "2018-01-05" @default.
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• W2780197004 date "2018-04-01" @default.
• W2780197004 modified "2023-10-18" @default.
• W2780197004 title "Indoor high precision three-dimensional positioning system based on visible light communication using modified genetic algorithm" @default.
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• W2780197004 doi "https://doi.org/10.1016/j.optcom.2017.12.045" @default.
• W2780197004 hasPublicationYear "2018" @default.
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