分数间隔的非线性姆林森-哈拉希玛预编码与重量聚类,用于C频段100Gbaud/λ PAM-4传输
Optics letters
|July 15, 2024
概括
一个新的光纤传输方案,分数间隔的非线性Tomlinson-Harashima预编码与重量集群 (FS-NTHP-WC),提高接收器的灵敏度,并减少高速数据传输的计算复杂性.
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:
- 非线性Tomlinson-Harashima预编码 (NTHP) 在强度调制直接检测 (IM-DD) 光纤中有效地管理符号间干扰 (ISI).
- 然而,NTHP可以增加信号水平,减少眼睛宽度和接收器灵敏度.
研究的目的:
- 提出一个新的分数间隔的NTHP与重量集群 (FS-NTHP-WC) 方案.
- 为了增强眼睛的宽度,并实现硬件效率高的实现,而不会造成均等处罚.
主要方法:
- 实施一个分数间隔的NTHP与重量聚类和修剪.
- 使用准确的ISI反来提高信号质量.
主要成果:
- 在背对背和2公里标准单模光纤传输下分别获得0.25dB和0.5dB的接收器灵敏度增长.
- 与NTHP相比,计算复杂度降低了90% (乘法) 和76% (加法).
- 在C频段成功传输了100Gbaud/λ的PAM-4信号.
结论:
- 该FS-NTHP-WC方案为IM-DD光纤系统的接收器灵敏度和计算效率提供了显著的改进.
- 这种方法通过扩大眼睛的宽度来提高信号质量,同时可以实现硬件效率的实现.
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