基于ExtraTrees隐藏的马尔科夫模型等级器,用于模式划分复杂化环芯光纤通信与非直角MultiCAP调制
Optics express
|June 11, 2024
概括
本研究介绍了轨道角动量模式分割复杂化 (OAM-MDM) 系统的先进等分器. 这种新方法显著提高了接收器的灵敏度,并减少了高容量光通信的计算复杂性.
科学领域:
- 光学通信是指光学通信.
- 信号处理 信号处理
背景情况:
- 轨道角动量模式分裂多重复合 (OAM-MDM) 对于增加光纤通信能力至关重要.
- 非直角的多带无载波振幅和相位调制 (NMCAP) 提供了高光谱效率.
- 非线性通道损伤会降低高速光学系统中的信号质量.
研究的目的:
- 开发和评估使用NMCAP调制的OAM-MDM系统的新型等效器.
- 与现有方法相比,提高接收器的灵敏度并降低计算复杂性.
- 评估拟用于超高容量的数据中心互联互连的提议均衡器的可行性.
主要方法:
- 基于极端随机树木隐藏马尔科夫模型 (ExtraTrees-HMM) 的等分器的实现.
- 使用收到扭曲信号的统计特征建模非线性通道.
- 在216 Gbit/s OAM-MDM NMCAP光纤通信系统中对2公里环芯光纤进行实验验证.
主要成果:
- 与传统的Volterra非线性等效器 (VNE) 相比,ExtraTrees-HMM等效器在OAM模式l=+2时提高了接收器灵敏度1dB,在OAM模式l=+3时提高了0.6dB.
- 与VNE相比,使用ExtraTrees-HMM等分器实现了43.94%的计算复杂度降低.
- 拟议的方法有效地减轻了非线性通道扭曲.
结论:
- ExtraTrees-HMM等分器是使用NMCAP调制的OAM-MDM系统的高效解决方案.
- 这种方法在接收器灵敏度和计算效率上提供了显著的改进.
- ExtraTrees-HMM等分器显示了未来超高容量的光通信网络的巨大潜力.
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