概括
一个新的双向姆林森-哈西马预编码 (P-THP) 方案有效地解决了多车道强度调制直接检测 (IM-DD) 系统中的符号间干扰和性能变化. 这种方法通过减少所需的光学接收功率来提高高速光学通信的吞吐量.
科学领域:
- 光学通信系统 光学通信系统
- 对于光学网络的信号处理.
背景情况:
- 使用多通道强度调制直接检测 (IM-DD) 的光子互连面临吞吐量限制.
- 由于带宽限制和因组件变化的频道间性能差异而导致的频道内部符号间干扰 (ISI) 是一个关键挑战.
研究的目的:
- 提出和实验评估一个双对的姆林森-哈西马预编码 (P-THP) 方案.
- 在IM-DD系统中同时解决道内部ISI和道间性能差异.
主要方法:
- 实施一种新的双对姆林森-哈西马预编码 (P-THP) 方案.
- 在2公里长的标准单模光纤 (SSMF) 上,实验传输了4通道81-GBaud PAM4信号.
- 与传统的Tomlinson-Harshima预编码进行比较,适用于单个频道.
主要成果:
- 与传统方法相比,拟议的P-THP方案在背对背 (B2B) 条件下降低了0.751dB的所需光学接收功率 (ROP).
- 在7%的硬决策前置错误校正 (HD-FEC) 值 (BER = 3.8 × 10-3),P-THP表现出卓越的性能.
- 在SSMF传输2公里后,只有P-THP方案才能达到高清FEC值,实现净速率超过600Gbit/s.
结论:
- 双向Tomlinson-Harshima预编码 (P-THP) 方案是减轻多车道IM-DD光学互连中的ISI和性能变化的有效解决方案.
- P-THP显著提高了性能,并为高速光通信系统提供了更高的净数据速率.
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