概括
本研究引入了一种新的4x4实值等效器,可以有效地弥补光通信中发射器相位/方位 (IQ) 损伤. 均衡器通过整合频率偏移估计和利用决策定向最小平均平方算法来提高信号质量,以实现更快的适应.
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:
- 一致的光通信系统容易受到来自发射器的相位/方位 (IQ) 损害.
- 这些损害,包括定时偏差,增强失衡和相位错误,降低信号质量,需要强大的补偿技术.
研究的目的:
- 开发和验证一个4x4实值通道均等器与嵌入式相位估计器,以减轻发射器智商障碍.
- 改进载波阶段和频率偏移估计和相干光学系统中的补偿.
主要方法:
- 实现一个4x4实值等效器架构.
- 采用决策定向最小平均平方 (DD-LMS) 算法来控制自适应式波器系数,从而实现更快的适应.
- 在等分器中集成频率偏移估计 (FOE) 模块.
主要成果:
- 模拟显示,在60 GBaud PM-16QAM信号的IQ损伤的情况下,拟议的等效器在现有2x2和4x4实值等效器中表现优于现有2x2和4x4等效器.
- 实验结果表明,在60 GBaud PM-16QAM信号上,对于各种智商障碍的SNR处罚 (<0.41 dB) 是最小的 (7 ps斜率,3.5 dB增益不平衡,0.5 V偏移).
- 实验证实了有效的载波阶段估计和频率偏移补偿.
结论:
- 拟议的4x4实值等效器与嵌入式FOE有效地弥补了连贯光通信中的发射器IQ损伤.
- 该DD-LMS算法促进了快速适应等分器系数,提高了性能.
- 综合方法比现有方法提供了显著的改进,特别是在具有挑战性的传输条件下.
相关概念视频
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