VLC Systems for Communications and Lighting

Abstract

Visible Light Communication (VLC) is an emerging field in Optical Wireless Communication (OWC) which utilizes the direct modulation of Light Emitting Diodes (LEDs) to transmit data. In current communication systems, the most popular frequency band is Radio Frequency (RF) mainly due to little interference and good coverage. Visible Light Communications (VLC) is increasingly attracting not only the interest of researchers as a challenge to replace or complement WIFI in the future but also companies to remain positioned in the market and increase their capital. Several years ago, when LEDs were an interesting combination and variation of lighting, generating greater energy and economic savings, expectations were already created regarding the development and technological impact that can be developed on part of the spectrum, specifically on the visible. Technologies have been developed that make it possible to take advantage of this channel and variants of these technologies that are coupled to the chemical elaboration and photonic principles of the LEDs, allowing advanced modulations with higher bitrate efficiency. Based on this, we study schemes oriented towards power, coverage and bitrates, providing us the opportunity to study the current market in order to make a list of feasible components to employ in several proposals to implement in a converged scenario with multiple functionalities and the VLC system well known advantages.