Publication: Implementación de prototipo localización indoor mediante VLC
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2020
Defense date
2020-07-22
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Abstract
En este estudio se ha propuesto la implementación de un sistema de localización indoor mediante VLC (Visible Light Communications). Se emplea la modulación OFDM (Orthogonal Frequency Division Multiplexing) para realizar la transmisión de señales y para la diferenciación de los transmisores. Se implementa un algoritmo de trilateración por RSS (Recieved Signal Strength). Se ha descrito y desarrollado la implementación física del sistema prestando especial atención al driver de modulación del LED (Light Emitting Diode) y al circuito de recepción en el que se destaca la conversión óptico-eléctrica mediante el fotodiodo.
Se ha realizado simulaciones tanto del sistema completo como de los elementos individuales del circuito para evaluar su respuesta.
Se ha obtenido una cota para el RMSE (Root Mean Square Error) de 2.5 cm para una SNR (Signal to Noise Ratio) de 50 dB demostrándose que se trata de un sistema de alta precisión.
In this paper an indoor VLC (Visible Light Communications) positioning system implementation is proposed. An OFDM (Orthogonal Frequency Division Multiplexing) modulation is used to transmit signals y to distinguish each transmitter. A RSS (Recieved Signal Strength) trilateration algorithm is carried out. A hardware system implementation is described and developed focusing on LED (Light Emmiting Diode) modulation driver and on reciever electronic circuit where opto-electric conversion is made with a photodiode. Both whole system and individual components of the circuit have been simulated to perform its results. A 2.5cm RMSE (Root Mean Square Error) lower bound is achieved for a 50dB SNR (Signal to Noise Ratio) value showing that a high-precision system has been performed.
In this paper an indoor VLC (Visible Light Communications) positioning system implementation is proposed. An OFDM (Orthogonal Frequency Division Multiplexing) modulation is used to transmit signals y to distinguish each transmitter. A RSS (Recieved Signal Strength) trilateration algorithm is carried out. A hardware system implementation is described and developed focusing on LED (Light Emmiting Diode) modulation driver and on reciever electronic circuit where opto-electric conversion is made with a photodiode. Both whole system and individual components of the circuit have been simulated to perform its results. A 2.5cm RMSE (Root Mean Square Error) lower bound is achieved for a 50dB SNR (Signal to Noise Ratio) value showing that a high-precision system has been performed.
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VLC (Visible Light Communications), OFDM, RSS, Localización en interiores