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- W2901857578 abstract "This paper presents a novel time-domain equalizer for visible light communication (VLC) system using machine learning (ML) method. In this work, we employ discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) as modem scheme and convolution neural network (CNN) as kernel processing unit of equalizer. After estimating channel state information (CSI) from training sequence, the proposed equalizer recovers transmitted symbols according to the estimated CSI. Numerical simulations indicate that the equalizer can significantly enhance bit error rate (BER) performance. For example, when signal-to-noise ratio (SNR) is 20 dB and 16/32/64-quadrature amplitude modulation (QAM) is exploited, original BER is about 0.5 while the BER after recovery achieves 10−5, which is much lower than forward error correction (FEC) limit 3.8×10−3. This work promotes the application of ML in VLC domain. To the best of our knowledge, this is the first time a CNN-based equalizer has been explored." @default.
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- W2901857578 date "2019-03-01" @default.
- W2901857578 modified "2023-10-17" @default.
- W2901857578 title "Convolution neural network-based time-domain equalizer for DFT-Spread OFDM VLC system" @default.
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- W2901857578 doi "https://doi.org/10.1016/j.optcom.2018.10.001" @default.
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