Abstract
Visible light positioning (VLP) is a promising indoor localization system in which light emitting diode (LED) luminaires are used as positioning beacons. Data communication is an essential aspect of any VLP system, as each luminaire must transmit information about its own location to the receiver. The quadrature angular diversity aperture (QADA) is a new receiver designed specifically for VLP systems using angle-of-arrival estimation. Previous QADA research has focused only on positioning and assumed error-free communication. In this paper, we investigate, via simulations and experiment, the actual communication characteristics of a VLP system that uses a QADA receiver. We calculate the signal-to-noise ratio and bit-error-rates for a range of scenarios and demonstrate the impact of the dimensions of the receiver. We show that reliable communication is assured in typical operating scenarios, proving that communication will not be a limiting factor when using QADA in VLP systems.
Highlights
Interest in visible light positioning (VLP) systems has witnessed a dramatic increase in recent years [1]
We can see that the quadrature angular diversity aperture (QADA) receiver is capable of providing very good performance in all locations within the room when the field of view (FOV)-C is 63.4◦
When the FOV-C is reduced to 45◦, as long as the luminaires are within the FOV-C of the receiver, the signals are received with a very low BER
Summary
Interest in visible light positioning (VLP) systems has witnessed a dramatic increase in recent years [1] This has been driven by the need for a reliable localization system that works indoors and by the widespread adoption of light emitting diodes (LEDs) for lighting applications [2]. In WiFi positioning, the existing access points that are commonly deployed in buildings for wireless communication, are used as positioning beacons [4,5]. This contrasts with BLE positioning where a dedicated infrastructure is deployed, typically using battery operated beacons [6,7]. UWB systems need to deploy specialized transmitters, but unlike BLE, the receivers are not commonly available in current consumer electronic devices like smartphones [8,9,10]
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