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• W2766765357 abstract "LED nonlinearity is an important issue limiting the performance of Visible Light Communication (VLC) systems. This form of distortion is particularly problematic when the system employs Optical-OFDM because of the high Peak-to-Average Power Ratio (PAPR) of its time domain symbol. This paper proposes using ancillary statistical properties of the O-OFDM signal in order to mitigate LED nonlinearities in an unsupervised fashion. By exploring the Gaussianity of the time domain OFDM signal and the idea of distribution equalization, we propose a semi-parametric approach to blind nonlinear post-equalization for asymmetrically clipped O-OFDM (ACO-OFDM) VLC systems. In addition to not requiring training data, the equalizer is robust to different LED types and it is adaptive to time-varying nonlinearities. Simulations with a realistic LED model show that the developed tool is capable of substantially mitigating the effects of nonlinear distortion on system performance." @default.
• W2766765357 created "2017-11-10" @default.
• W2766765357 creator A5009922944 @default.
• W2766765357 creator A5037372511 @default.
• W2766765357 date "2017-08-01" @default.
• W2766765357 modified "2023-09-25" @default.
• W2766765357 title "Unsupervised time domain nonlinear post-equalization for ACO-OFDM visible light communication systems" @default.
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• W2766765357 doi "https://doi.org/10.23919/eusipco.2017.8081327" @default.
• W2766765357 hasPublicationYear "2017" @default.
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