NON-LINEAR COMPANDING TECHNIQUES WITH ACO-OFDM-BASED VLC SYSTEMS FOR PAPR REDUCTION

Document Type : Original Article

Authors

1 Electrical Engineering Department, Faculty of Engineering, Minia 61111, Egypt

2 Electronics and Communication Department, Modern Academy for Eng & Tech, Maadi 11585, Cairo, Egypt.

3 Photonic Research Lab, Electrical Engineering Department, College of Engineering, Dawadmi, Shaqra University, Kingdom of Saudi Arabia, 11961. OSA Member

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-linear Companding Techniques that target remarkable peak-to-average power ratio performance with acceptable bit error rate performance for ACO-OFDM-based 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 works of literature on ACO-OFDM-based VLC systems to ensure its novelty, validity, and effectiveness.

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