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In this paper, a novel unipolar orthogonal frequency-division multiplexing (OFDM) scheme is proposed for indoor intensity modulation/direct detection (IM/DD) visible light communication (VLC) using The positive and negative parts of a bipolar OFDM signal are transmitted separately on two colors of a RGB LED through color multiplexing. Compared with conventional DC biased optical OFDM (DCO-OFDM) or asymmetrically clipped optical OFDM (ACO-OFDM), the proposed color multiplexed optical OFDMdoi:10.1016/j.proeng.2016.07.339 fatcat:ofxxpujnhrhwno7jsa5v275mbe