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Low Complexity Component Nonlinear Distortions Mitigation Scheme for Probabilistically Shaped 64-QAM Signals

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Dec 21, 2020
Yiwen Wu, Mengfan Fu, Huazhi Lun, Lilin Yi, Weisheng Hu, Qunbi Zhuge

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We propose a degenerated hierarchical look-up table (DH-LUT) scheme to compensate component nonlinearities. For probabilistically shaped 64-QAM signals, it achieves up to 2-dB SNR improvement, while the size of table is only 8.59% compared to the conventional LUT method.

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