概括
一种简化的最大概率序列估计 (MLSE) 方法显著降低了连贯光学系统的复杂性. 这种新的方法保持了高性能,Q因子损失最小,提高了高速传输的效率.
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:
- 高速连贯光纤传输系统由于线性和非线性符号相关性而面临性能下降.
- 传统的最大概率序列估计 (MLSE) 具有很高的计算复杂性,限制了其在先进系统中的应用.
研究的目的:
- 引入和验证一种简化的MLSE方法,以加强连贯的光传输系统.
- 为了减少MLSE在高速光通信中的实施复杂性和功耗.
主要方法:
- 取代了传统的通道脉冲响应 (CIR) 卷积,采用了抬头表 (LUT).
- 在MLSE算法中的简化欧几里德距离 (ED) 计算.
- 分析了算法运算,CMOS晶体管计数和跨技术节点的功耗.
主要成果:
- 简化的MLSE方案将实施复杂性降低到传统方法的5%左右.
- 在线性和非线性带宽受限制的场景中,Q因子中的性能损失小于0.3dB.
- 通过模拟和实验设置验证了有效性.
结论:
- 拟议的简化MLSE为提高连贯光纤传输的性能和效率提供了实际解决方案.
- 这种低复杂性的方法使高速光学系统中的先进信号处理能够在没有显著的性能损害的情况下实现.
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