论文信息 - A Constellation-shaped 127QAM scheme based on Geometric Shaping

A Constellation-shaped 127QAM scheme based on Geometric Shaping

A novel constellation-shaped 127QAM scheme based on geometric-shaping is proposed. In a 140-Gb/s simulation system, the proposed scheme has a 0.87dB OSNR gain and a 186km transmission-distance gain at 2e-2 BER, compared with uniform-128QAM.

[1] Li Ding,et al. Generation of faster-than-Nyquist coherent optical DFT-spread OFDM signals with high-baud and high-order modulations , 2021, Optical Fiber Technology.