波德率定时相位错误检测器,具有改进的定时动性能,用于自我同源连贯传输
Optics express
|February 20, 2026
概括
这项研究引入了一种新的,无乘法定时相误差检测器 (TPED),用于自同质连贯检测 (SHCD) 系统. 新的TPED显著改善了定时动和接收器的灵敏度,而不需要复杂的计算.
科学领域:
- 光学通信是指光学通信.
- 数字信号处理 数字信号处理
- 信号检测 信号检测
背景情况:
- 对于连贯系统而言,现有的定时阶段错误检测器 (TPED) 存在高计算复杂性,延迟和性能退化,其中包括尼奎斯特脉冲塑造 (NPS),概率星座塑造 (PCS) 和高顺序调制.
- 自同基连贯检测 (SHCD) 通过消除局部振荡器频率和相位偏移来简化接收器数字信号处理 (DSP),但在TPED设计中,这种好处未得到充分利用.
研究的目的:
- 提出一种新的波段率,无乘法TPED,利用SHCD优势克服现有TPED的局限性.
- 为了提高SHCD系统中的定时动性能和接收器灵敏度.
- 解决与NPS,PCS和高阶调制相关的性能退化问题.
主要方法:
- 开发一种新的波特速率,无乘法TPED架构.
- 利用SHCD固有的消除局部振荡器频率和相位偏移.
- 使用决策操作来减轻由符号转换引起的时间降解.
主要成果:
- 拟议的TPED在计时动性能方面实现了大约10dB的改进.
- 与现有方法相比,观察到接收器灵敏度提高了~1dB.
- 在数值模拟和实验中证明了对NPS和PCS的强大弹性.
结论:
- 新型TPED有效地消除了SHCD接收器中符号转换引起的定时降解.
- 拟议的探测器在定时动和接收器灵敏度方面提供了显著的改进.
- 它为下一代低复杂性,高性能SHCD接收器提供了一个有希望的解决方案.
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