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Discrete sliding norm transform-based 50% PAPR reduction in asymmetrically clipped optical OFDM systems for optical wireless communications

Discrete sliding norm transform-based 50% PAPR reduction in asymmetrically clipped optical OFDM systems for optical wireless communications

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Orthogonal frequency division multiplexing (OFDM) systems have inferior nonlinear performance due to their high peak to average power ratio (PAPR) characteristics, which degrades the performance in optical wireless communication systems. A modified asymmetrically clipped optical (ACO)-OFDM system with low PAPR by introducing a discrete sliding norm transform (DSNT) as low-complexity post-inverse discrete Fourier transform processing is proposed. Numerical results show that the proposed DSNT-ACO-OFDM achieves about 50% PAPR reduction, while maintaining a competitive bit error rate performance compared with the conventional schemes.

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