基于PAM-4 IM/DD OAM的MGDM传输的动态分析,通过模式组过方法实现
Optics letters
|June 15, 2023
概括
一个新的模式组过方案增强了光通信的模式-组-分割多重复合 (MGDM). 这种方法在强度调制/直接检测 (IM/DD) 系统中实现了高容量和稳定性.
科学领域:
- 光学通信是指光学通信.
- 光子学 是一个光子学.
- 信号处理 信号处理
背景情况:
- 模式组分割复杂化 (MGDM) 为短距离光通信提供了更大的容量.
- 强度调制/直接检测 (IM/DD) 系统被广泛使用,但面临能力限制.
研究的目的:
- 为 MGDM IM/DD 传输提出一个简单,多功能和低复杂性的模式组 (MG) 过方案.
- 展示一个无多输入多输出 (MIMO) 系统,具有高性能和低功耗.
主要方法:
- 无MIMO的IM/DD联合通道同时发送和接收系统的实验演示.
- 使用两个轨道角动量 (OAM) MGs,每一个携带一个38-GBaud四级脉冲振幅调制 (PAM-4) 信号.
- 使用简单的前均等 (FFE) 和比特误差比率 (BER) 和信号对噪声比率 (SNR) 的动态评估.
主要成果:
- 在5公里的少数模式光纤 (FMF) 上实现了152 Gb/s的总原始比特速率.
- 两个MG的BER仍然低于7%的硬决策前期错误纠正 (HD-FEC) 门 (3.8×10-3).
- 210分钟的动态BER测试始终保持在1×10-3以下,证明了稳定性.
结论:
- 拟议的MG过方案对于高容量,低复杂性的MGDM IM/DD系统是有效的.
- 该方案确保了可靠性和稳定性,这对于实际的光通信链路至关重要.
- 实验结果证实了拟议的MGDM传输方法的稳定性和可行性.
相关概念视频
Frequency-Domain Interpretation of PD Control
147
Proportional-Derivative (PD) controllers are widely used in fan control systems to improve stability and performance. A fan control system can be effectively represented using a Bode plot to illustrate the impact of a PD controller through its transfer function. The Bode plot visually conveys how PD control modifies the fan's response across various frequencies, providing a frequency domain interpretation of the controller's behavior.
The proportional control gain, combined with the...
The proportional control gain, combined with the...
147
Time-Domain Interpretation of PD Control
147
Proportional-Derivative (PD) control is a widely used control method in various engineering systems to enhance stability and performance. In a system with only proportional control, common issues include high maximum overshoot and oscillation, observed in both the error signal and its rate of change. This behavior can be divided into three distinct phases: initial overshoot, subsequent undershoot, and gradual stabilization.
Consider the example of control of motor torque. Initially, a positive...
Consider the example of control of motor torque. Initially, a positive...
147
Transmission-Line Differential Equations
351
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...
351
Multimachine Stability
198
Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
198
Transmission Line Design Considerations
177
Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...
177
IP3/DAG Signaling Pathway
12.2K
Membrane lipids such as phosphatidylinositol (PI) are precursors for several membrane-bound and soluble second messengers. Specific kinases phosphorylate PI and produce phosphorylated inositol phospholipids. One such inositol phospholipids are the phosphatidylinositol-4,5 bisphosphate [PI(4,5)P2], present in the inner half of the lipid bilayer. Upon ligand binding, GPCR stimulates Gq proteins to turn on phospholipase Cꞵ. Activated phospholipase Cꞵ cleaves PI(4,5)P2 and...
12.2K


