Enhanced Gaussian noise models reveal SNR variation from variable-composition probabilistic shaping in fiber channels; a proposed nonlinearity-optimized matcher improves average and worst-case SNR by 0.14 dB and 0.22 dB.
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Analysis and Optimisation of Distribution Matching for the Nonlinear Fibre Channel
Enhanced Gaussian noise models reveal SNR variation from variable-composition probabilistic shaping in fiber channels; a proposed nonlinearity-optimized matcher improves average and worst-case SNR by 0.14 dB and 0.22 dB.