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Improving the BER and PAPR performances of optical OFDM with lazy lifting wavelet transform

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Abstract

Visible light communication (VLC), which is seen as an alternative and complementary technology to radio frequency (RF) communication systems, has emerged as a promising new generation system. Because of its potential to combat inter-symbol interference (ISI), orthogonal frequency division multiplexing (OFDM) has been validated as the best candidate for high-speed optical wireless communications (OWC). Asymmetrically clipped optical OFDM (ACO-OFDM), DC-biased optical OFDM (DCO-OFDM), and Flip-OFDM, which are made suitable for intensity modulation/direct detection (IM/DD) systems, are unipolar OFDM schemes widely accepted for OWC in the literature. In this study, it is proposed to combine the lifting wavelet transform (LLWT), which uses the lazy wavelet, with these three optical OFDM waveforms to increase the performance of the ACO-OFDM, DCO-OFDM, and Flip-OFDM systems proposed for OWC systems. In the environment where M-level color shift keying (M-CSK) and M-level quadrature amplitude modulation (M-QAM) modulations are used, proposed waveforms are tested with computer simulations for bit error rate (BER) and peak average power ratio (PAPR) performance measures. From the obtained simulation results, it is observed that the proposed transform technique performs an approximately 6 dB SNR improvement on the waveforms investigated in this study in both modulation methods for the 1E-4 BER value.

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The codes in this study are available on request from the corresponding author.

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Authors and Affiliations

  1. Erciyes Anadolu Center, Organized Industrial Zone 6th Street No:35, 38070, Kayseri, Turkey

    Talat Kepezkaya

  2. Department of Electrical and Electronics Engineering, Tarsus University, 33400, Tarsus, Mersin, Turkey

    Ali Özen

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  1. Talat Kepezkaya
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  2. Ali Özen
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TK performed computer-based simulations, wrote the paper, and developed the system model. The development of the manuscript was supervised by AÖ. All of the authors have read and approved the contents of this manuscript.

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Correspondence to Ali Özen.

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Kepezkaya, T., Özen, A. Improving the BER and PAPR performances of optical OFDM with lazy lifting wavelet transform. Opt Quant Electron 55, 1181 (2023). https://doi.org/10.1007/s11082-023-05464-7

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