Nonlinear phase noise tolerance for coherent optical systems using soft-decision-aided ML carrier phase estimation enhanced with constellation partitioning
Nonlinear phase noise tolerance for coherent optical systems using soft-decision-aided ML carrier phase estimation enhanced with constellation partitioning
复制标题
使用通过星座划分增强的软决策辅助 ML 载波相位估计的相干光学系统的非线性相位噪声容限
DOI:
10.1016/j.optcom.2017.06.098
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发表时间:
2018-02
影响因子:
2.4
通讯作者:
Kam Pooi Yuen
中科院分区:
文献类型:
--
作者:
Li Yan;Wu Mingwei;Du Xinwei;Xu Zhuoran;Gurusamy Mohan;Yu Changyuan;Kam Pooi Yuen
A novel soft-decision-aided maximum likelihood (SDA-ML) carrier phase estimation method and its simplified version, the decision-aided and soft-decision-aided maximum likelihood (DA-SDA-ML) methods are tested in a nonlinear phase noise-dominant channel. The numerical performance results show that both the SDA-ML and DA-SDA-ML methods outperform the conventional DA-ML in systems with constant-amplitude modulation formats. In addition, modified algorithms based on constellation partitioning are proposed. With partitioning, the modified SDA-ML and DA-SDA-ML are shown to be useful for compensating the nonlinear phase noise in multi-level modulation systems.
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