Abstract
Visible light communication (VLC) is a new paradigm that could revolutionise the future of wireless communication. In VLC, information is transmitted through modulating the visible light spectrum (400–700 nm) that is used for illumination. Analytical and experimental work has shown the potential of VLC to provide high-speed data communication with the added advantage of improved energy efficiency and communication security/privacy. VLC is still in the early phase of research. There are fewer review articles published on this topic mostly addressing the physical layer research. Unlike other reviews, this article gives a system prespective of VLC along with the survey on existing literature and potential challenges toward the implementation and integration of VLC.
Highlights
In the 1980s, the development of high-efficiency red, orange and yellow light emitting diodes (LEDs) have fueled the idea of replacing the solid-state lighting for illumination purpose
This paper provides an overview of the Visible light communication (VLC) from the uplink and system perspective
VLC operates in 430–770 THz, and due to nanometer wavelength, it cannot penetrate in objects, making it ideal for applications where confidentiality of data is of utmost importance
Summary
In the 1980s, the development of high-efficiency red, orange and yellow light emitting diodes (LEDs) have fueled the idea of replacing the solid-state lighting for illumination purpose. With the decreasing prices and low power consumption of LED’s, it is estimated that the market share of LED lighting would increase to 69% in 2020 [1]. The exponential growth of data in the last two decades has raised concerns over the electricity consumption of information communication technology (ICT) infrastructure. It is envisioned that existing lighting infrastructure should provide illumination as well as data connectivity. The information signal is superimposed on the LED light without introducing any flickering to the end user It would be “green” as compared to providing two separate sources for illumination and communication network connectivity. It has the potential to provide high-speed data communication with improved energy efficiency along with security/privacy Standardisation efforts such as visible light communications association (VLCA) standards and IEEE 802.15.7 shows that VLC would augment existing wireless networks in coming years.
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