A survey on multiple access Visible Light Positioning

Due to the ubiquitous presence of smart mobile devices, the search for an enabling technology for indoor positioning has accelerated. Different systems have been designed for applications like asset tracking, guiding and other Location Based Services (LBS). Depending on the application, the solutions use RF-, InfraRed or ultrasound technologies as communication system between the mobile nodes and the reference points. The biggest challenge with the different technologies is the rough indoor environment leading to an insufficient accuracy, combined with a high installation cost. In recent years, Visible Light Communication (VLC) has received a lot of attention as a new wireless means of communicating. The local character of the light and the dense deployment of light fixture make VLC a candidate to bring a solution for indoor positioning. This paper gives an overview of the current research results on Visible Light Positioning (VLP) systems classified according to the multiple access technology used. The advantages and disadvantages of the different VLP topologies are addressed in this work.