Optimal Localization Design for Indoor Non-interfering LED-based System

Visible Light Communications (VLC) systems are designed to guarantee the twofold paradigm of both illumination and communications, thus resulting as a green technology. Indeed, it is possible to reduce cost and energy consumption by minimizing the number of Light Emitting Diodes (LEDs), while still guaranteeing network performance. However, adapting existing VLC systems to offer localization services needs a few considerations, as localization requirements do not overlap with the communication ones. In order to guarantee localization services, Visible Light Positioning (VLP) systems should be designed accordingly in order to provide at least three optical signals per unknown location. In this paper, we design an indoor VLP network able to guarantee accurate localization estimate with a minimum number of LED devices. The proposed optimal LED deployment technique is designed for VLP network. Numerical results achieving a 20 cm localization accuracy are obtained for different geometrical settings.