Non-Linear Companding Techniques With Aco-Ofdm-Based VLC Systems for Papr Reduction

Abstract

In visible light communication (VLC) systems, optical orthogonal frequency division multiplexing (OOFDM) is used to reduce the effects of inter-symbol interference while simultaneously achieving fast data transmission speeds and large bandwidths. Asymmetrically clipped optical orthogonal frequency division multiplexing (ACO-OFDM) is one of the most OOFDM used. ACO-OFDM with low peak-to-average power ratio performance becomes essential for practical visible light communication broadcasting systems due to non-linearity elimination. The techniques for reducing the peak-to-average power ratio for visible light communication broadcasting systems are designed, simulated, and evaluated in this work. This work provides novel mixed Non-Liner Companding Techniques that target remarkable peak-toaverage power ratio performance with acceptable bit error rate performance for ACO-OFDMbased VLC systems. This work compares the designed techniques then nominates an optimum one that provides the optimum peak-to-average power ratio and bit error rate performance. Finally, the nominated technique will be compared to all related literatuers of ACO-OFDM-based VLC systems to ensure its novelty, validity, and effectiveness.