概括
本研究引入了一种新的方法来补偿光通信系统中的信号扭曲,提高数据传输质量和效率. 这种新的方案提高了对现有方法的性能,同时降低了计算复杂性.
科学领域:
- 光学通信是指光学通信.
- 信号处理 信号处理
- 机器学习 机器学习
背景情况:
- 极化分裂多重复合 波长分裂多重复合 (PDM-WDM) 系统面临的信号退化来自色 dispersion (CD) 和非线性效应.
- 现有的数字反向传播 (DBP) 方法可能是计算密集的.
- 学习数字反向传播 (LDBP) 提供了一个潜在的解决方案,但需要进一步改进.
研究的目的:
- 提出和验证一个改进的LDBP方案,用于在PDM-WDM系统中共同进行道内和道间的非线性补偿.
- 为交替CD和非线性补偿开发一种物理可解释的神经网络方法.
- 为了减少非线性补偿的计算复杂性,同时保持或提高性能.
主要方法:
- 开发了一种基于可解释的神经网络的新型联合道内和道间非线性补偿方案.
- 实施了使用时间域中的1D卷积和改进的重叠和保存方法的染色分散补偿 (CDC).
- 在非线性补偿模型中纳入了通道内脉冲扩大和通道间断路效应.
主要成果:
- 与线性补偿相比,模拟显示PDM-16QAM的Q因子改善为~0.75dB,PDM-64QAM的Q因子改善为~0.54dB.
- 拟议方案的表现优于PDM-16QAM的DBP-5StPS,复杂度明显降低 (31.36%).
- 实验结果显示,PDM-16QAM的Q因子比线性补偿有0.86dB的改善,复杂度为DBP-5StPS的23.68%.
结论:
- 拟议的联合非线性补偿方案有效地减轻了PDM-WDM系统中的CD和非线性损害.
- 可解释神经网络方法为传统的DBP方法提供了更有效的替代方案.
- 该方案实现了卓越的性能和降低了复杂性,使其适用于先进的光通信系统.
更多相关视频
09:01Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques
Published on: April 4, 2017
8.7K
09:36Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements
Published on: June 25, 2021
3.0K
相关概念视频
Reconstruction of Signal using Interpolation
195
Signal processing techniques are essential for accurately converting continuous signals to digital formats and vice versa. When a continuous signal is sampled with a period T, the resulting sampled signal exhibits replicas of the original spectrum in the frequency domain, spaced at intervals equal to the sampling frequency. To handle this sampled signal, a zero-order hold method can be applied, which creates a piecewise constant signal by retaining each sample's value until the next...
195
Linear Approximation in Frequency Domain
89
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....
89
Linear Approximation in Time Domain
81
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,...
81
Reducing Line Loss
152
In a three-phase circuit, line loss is an indicator of energy dissipated as heat due to the resistance of transmission lines. To address this, incorporating transformers into the system—a step-up transformer at the source and a step-down transformer at the load—is a strategic solution. Two three-phase transformers are introduced to improve this.
With a step-up transformer at the source, the voltage is increased, thereby reducing the current in the transmission lines since power loss...
With a step-up transformer at the source, the voltage is increased, thereby reducing the current in the transmission lines since power loss...
152
Differential Leveling
175
Differential leveling is a precise method in surveying used to determine the elevation difference between two points. Its primary goal is to establish accurate vertical measurements to create level surfaces or grade lines critical for designing and constructing infrastructures such as roads, bridges, and buildings.The procedure for differential leveling begins with setting up and leveling the instrument at a point where the benchmark can be seen. The level rod is held on the benchmark (BM), and...
175
Transmission-Line Differential Equations
292
Transmission lines are essential components of electrical power systems. They are characterized by the distributed nature of resistance (R), inductance (L), and capacitance (C) per unit length. To analyze these lines, differential equations are employed to model the variations in voltage and current along the line.
Line Section Model
A circuit representing a line section of length Δx helps in understanding the transmission line parameters. The voltage V(x) and current i(x) are measured...
Line Section Model
A circuit representing a line section of length Δx helps in understanding the transmission line parameters. The voltage V(x) and current i(x) are measured...
292
