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国家集成的查看表辅助BCJR方案,在带宽有限的光学互连中显著优化了复杂性
Optics express
|November 11, 2025
概括
一个新的状态集成查看表 (SiLUT-BCJR) 检测方案在光学互连系统中显著降低了75%的计算复杂性. 这种方法优化了对符号间干扰的处理,以最小的功耗损失实现高速数据传输.
科学领域:
- 光学通信系统 光学通信系统
- 数字信号处理是数字信号处理.
- 信息理论是信息理论.
背景情况:
- 符号间干扰 (ISI) 是高速光学互连的一个主要障碍.
- 带宽高效的强度调制/直接检测 (IM/DD) 系统需要高效的检测方案.
- 传统的基于LUT的Bahl-Cocke-Jelinek-Raviv (BCJR) 算法面临着高度的计算复杂性.
研究的目的:
- 提出并实验证明一种新的状态集成查找表 (SiLUT-BCJR) 检测方案.
- 为了减少IM/DD光学系统中BCJR算法的计算复杂性.
- 提高高速光学互连中检测效率.
主要方法:
- 实施一个国家集成查看表 (SiLUT-BCJR) 检测方案.
- 采用融合方法,将中间符号整合到 LUT 模式中.
- 简化受符号间干扰 (ISI) 影响的符号的计数路径.
主要成果:
- 与传统的LUT-BCJR相比,提出的SiLUT-BCJR方案可以将计算复杂性降低75%.
- 在 160 Gbit/s PAM4 系统中通过单模光纤 (SMF) 进行实验验证.
- 观察到微不足道的光功率损失,证明了系统的稳定性.
结论:
- SiLUT-BCJR方案为光学互连提供了显著的计算优势.
- 拟议的方法有效地减轻ISI,同时保持高数据速率.
- 这种方法提高了高性能光通信系统的效率和实用性.
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