概括
一个新的以流为导向的旋转概率塑造 (TRPS) 方案提高了自由空间光学 (FSO) 通信速率. 这种方法在高信号噪声比 (SNR) 条件下提高性能,即使大气流增加.
科学领域:
- 光学通信是指光学通信的应用.
- 无线通信系统无线通信系统
- 信号处理 信号处理
背景情况:
- 自由空间光学 (FSO) 系统提供高速和容量,但受到大气流的挑战.
- 现有的方法在不同流强度下难以保持性能.
研究的目的:
- 为FSO系统引入一种新的以流为导向的旋转概率塑造 (TRPS) 方案.
- 为了提高可实现的速率,并改善流式FSO通道的错误性能.
主要方法:
- 开发了一个TRPS方案,优化概率和旋转角度,以共同编码,塑造和信号空间多样性增长.
- 导出并验证非等效对错误概率作为平均符号错误率 (ASER) 的上限.
- 用于前向后错误纠正比特错误率 (BER) 模拟的极点代码.
主要成果:
- TRPS显著提高了高SNR地区的可实现率,并增加了流.
- 与非旋转的16-ary正方形振幅调制 (16QAM) 相比,每符号 (b/s) 的速率增加0.08至0.23位.
- 在强的流下,TRPS在16QAM和32QAM的ASER中显示了超过11.5dB和BER中的3dB的联合收益.
结论:
- 在理论上和实践中,TRPS计划证实了其在FSO系统中的优势.
- TRPS有效地减轻大气流的影响,提高整体系统性能.
- 拟议的方案显示了FSO通信的强大和高性能的巨大潜力.
更多相关视频
14:18Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
Published on: February 28, 2016
11.3K
00:07A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
8.4K
相关概念视频
Curvilinear Motion: Polar Coordinates
347
In polar coordinates, the motion of a particle follows a curvilinear path. The radial coordinate symbolized as 'r,' extends outward from a fixed origin to the particle, while the angular coordinate, 'θ,' measured in radians, represents the counterclockwise angle between a fixed reference line and the radial line connecting the origin to the particle.
The particle's location is described using a unit vector along the radial direction. Deriving the particle's position...
The particle's location is described using a unit vector along the radial direction. Deriving the particle's position...
347
Pole and System Stability
249
The transfer function is a fundamental concept representing the ratio of two polynomials. The numerator and denominator encapsulate the system's dynamics. The zeros and poles of this transfer function are critical in determining the system's behavior and stability.
Simple poles are unique roots of the denominator polynomial. Each simple pole corresponds to a distinct solution to the system's characteristic equation, typically resulting in exponential decay terms in the system's...
Simple poles are unique roots of the denominator polynomial. Each simple pole corresponds to a distinct solution to the system's characteristic equation, typically resulting in exponential decay terms in the system's...
249
Polar and Cylindrical Coordinates
14.4K
The Cartesian coordinate system is a very convenient tool to use when describing the displacements and velocities of objects and the forces acting on them. However, it becomes cumbersome when we need to describe the rotation of objects. So, when describing rotation, the polar coordinate system is generally used.
14.4K
Measuring Reaction Rates
24.6K
Polarimetry finds application in chemical kinetics to measure the concentration and reaction kinetics of optically active substances during a chemical reaction. Optically active substances have the capability of rotating the plane of polarization of linearly polarized light passing through them—a feature called optical rotation. Optical activity is attributed to the molecular structure of substances. Normal monochromatic light is unpolarized and possesses oscillations of the electrical...
24.6K
Relative Motion Analysis using Rotating Axes
448
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
448
