Visible Light Communication Modulation Toolkit using Reconfigurable GNU Radio Framework

In this paper, we have proposed a user-centric simulation platform for indoor visible light communication (VLC) systems using open source GNU Radio framework. The three standard VLC modulation schemes, on-off keying (OOK), direct current-biased optical orthogonal frequency division multiplexing (DCO-OFDM) and asymmetrically clipped OFDM (ACO-OFDM) are investigated. The state-of-the art modulation toolkit provides a universal interface to the user to analyze the realistic performance of the three modulation schemes OOK, DCO-OFDM and ACO-OFDM in terms of Bit Error Rate (BER) under different channel conditions.