连贯光学系统的低复杂度算法与收发器智商失衡.
Optics express
|September 15, 2023
概括
本研究引入了一种新的无试点载波相位恢复算法,以纠正高速光通信系统中的相位/方位 (IQ) 不平衡,提高高级调制格式的性能.
科学领域:
- 光学通信是指光学通信.
- 信号处理 信号处理
- 数字通信数字通信
背景情况:
- 下一代连贯光学系统需要更高的符号速率和调制枢纽度.
- 发射器和接收器的智商失衡会降低系统性能.
- 现有的校正方法通常需要飞行员或具有高计算复杂性.
研究的目的:
- 为IQ失衡补偿提出一种新的无飞行员载体阶段恢复算法.
- 开发一种使用几何参数提取的接收方智商失衡校正方法.
- 为了提高性能和降低高速光通信系统的计算复杂性.
主要方法:
- 一个基于参考星座适应的单点击算法用于发射器智商失衡.
- 一种无飞行员的几何参数提取方法来检测接收器智商失衡.
- 对于32 GBaud极化多重化 (PM) -16QAM和64QAM的数值模拟.
- 对32 GBaud PM-16QAM信号进行实验验证.
主要成果:
- 拟议的算法有效地弥补了发射器智商失衡.
- 无飞行员接收器方法准确地纠正智商失衡.
- 模拟和实验证实了高阶调制格式的有效性.
- 该方案在不同的调制格式中表现出强度.
结论:
- 开发的无试点方案为智商失衡提供了一个计算效率高的解决方案.
- 这种方法适用于连贯光通信中的各种调制格式.
- 提出的方法显著提高了由智商失衡降低的系统性能.
相关概念视频
Linear Approximation in Frequency Domain
109
Linear systems are characterized by two main properties: superposition and homogeneity. Superposition allows the response to multiple inputs to be the sum of the responses to each individual input. Homogeneity ensures that scaling an input by a scalar results in the response being scaled by the same scalar.
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
109
Linear Approximation in Time Domain
99
Nonlinear systems often require sophisticated approaches for accurate modeling and analysis, with state-space representation being particularly effective. This method is especially useful for systems where variables and parameters vary with time or operating conditions, such as in a simple pendulum or a translational mechanical system with nonlinear springs.
For a simple pendulum with a mass evenly distributed along its length and the center of mass located at half the pendulum's length,...
For a simple pendulum with a mass evenly distributed along its length and the center of mass located at half the pendulum's length,...
99
Linear time-invariant Systems
285
A system is linear if it displays the characteristics of homogeneity and additivity, together termed the superposition property. This principle is fundamental in all linear systems. Linear time-invariant (LTI) systems include systems with linear elements and constant parameters.
The input-output behavior of an LTI system can be fully defined by its response to an impulsive excitation at its input. Once this impulse response is known, the system's reaction to any other input can be...
The input-output behavior of an LTI system can be fully defined by its response to an impulsive excitation at its input. Once this impulse response is known, the system's reaction to any other input can be...
285
Imaging Biological Samples with Optical Microscopy
4.8K
Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
4.8K


