在低CSPR条件下通过简化载体辅助差异检测与间接子载体加载方案进行现场恢复
Optics letters
|August 1, 2023
概括
一个新的简化接收器简化了光学信号恢复的硬件. 这种载波辅助差异检测 (CADD) 方法在使用更少的资源的情况下实现了更好的性能,改善了比特误差率 (BER) 和光信号对噪声比率 (OSNR).
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:
- 复杂值双侧带 (DSB) 信号恢复在光通信系统中至关重要.
- 低载波与信号功率比率 (CSPR) 条件对接收器的复杂性和性能构成挑战.
- 现有的载波辅助差分检测 (CADD) 接收器可能是硬件密集型的.
研究的目的:
- 提出一个简化的CADD接收器设计.
- 为了减少系统硬件的复杂性,同时保持DSB信号的现场恢复.
- 在低CSPR条件下提高性能.
主要方法:
- 引入一个间接的次级载体装载方案.
- 开发一个简化的CADD接收器架构.
- 数字模拟用于评估比特误差率 (BER) 和光学信号对噪声比率 (OSNR).
主要成果:
- 简化的CADD接收器需要更少的间隙子载波来满足7%的硬决策前置错误校正 (HD-FEC) 限制 (3.8 × 10-3).
- 实现了超过3.2dB的光学信号噪声比 (OSNR) 增强,独立于CSPR.
- 虽然对时间延迟波动的稳定性下降,但可以通过时间独立的组件来减轻这种情况.
结论:
- 简化的CADD接收器为DSB信号恢复提供了更高硬件效率的解决方案.
- 可以实现BER和OSNR的显著改进,特别是在低CSPR的情况下.
- 这种方法为提高光通信系统性能提供了一种可行的方法.
相关概念视频
Carrier Generation and Recombination
619
Carrier generation is the process by which electron-hole pairs (EHPs) are created within the semiconductor. In direct-bandgap semiconductors, such as gallium arsenide (GaAs), this occurs efficiently when energy absorption prompts valence electrons to leap into the conduction band, leaving behind holes.
This process is given by the generation rate G and is efficient due to the conservation of momentum between the valence band maximum and conduction band minimum.
Indirect generation involves an...
This process is given by the generation rate G and is efficient due to the conservation of momentum between the valence band maximum and conduction band minimum.
Indirect generation involves an...
619
Pilot and Numeric Relaying
102
Pilot relaying is a type of differential protection used in power systems. It compares electrical quantities at the terminals of equipment via a communication channel instead of direct relay interconnection. This method is essential for transmission lines where the terminals are far apart, typically up to 80 km for lines with 69 to 115 kV ratings. Four types of communication channels are used for pilot relaying:
102
Receiver Operating Characteristic Plot
280
A ROC (Receiver Operating Characteristic) plot is a graphical tool used to assess the performance of a binary classification model by illustrating the trade-off between sensitivity (true positive rate) and specificity (false positive rate). By plotting sensitivity against 1 - specificity across various threshold settings, the ROC curve shows how well the model distinguishes between classes, with a curve closer to the top-left corner indicating a more accurate model. The area under the ROC curve...
280
Double Resonance Techniques: Overview
245
Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
Spin decoupling is usually achieved by...
245


