Approaches of Gigabit-Class Transmission for VLC with µLED-Based WDM System

Abstract

Visible light communication (VLC) is one of the most renowned technologies for indoor communication to compete with the upcoming 5G technology. Wavelength division multiplexing (WDM) and high-bandwidth µLEDs are the approaches to achieve gigabit-class VLC system. In this paper, we proposed a WDM-VLC model with multi-color µLED configuration using simple on–off keying (OOK) and 16 quadrature amplitude modulation (QAM) scheme. From the simulation approaches, data rate 2.7 Gb/s was achieved by OOK and 10.8 Gb/s by 16QAM after 8 m long VLC link. Therefore, BER was measured 10−4 and 10−15 when the electron lifetime and RC constant of µLED were 1 ns and 0.5 ns consequently. In addition, of the self RGBY LED was used for the experiment to get data rate 120 Mb/s by OOK and 480 Mb/s using 16QAM modulation scheme.