Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Properties of Fourier Transform I01:21

Properties of Fourier Transform I

163
The application of Fourier Transform properties in radio broadcasting is multifaceted, enabling significant advancements in the way signals are transmitted and received. Key areas where these properties are utilized include simultaneous multi-channel transmission, audio clip speed adjustments, live broadcast delays for different time zones, audio frequency adjustments, and signal demodulation.
In radio broadcasting, multiple audio signals often need to be transmitted simultaneously. The Fourier...
163
Linear Approximation in Frequency Domain01:26

Linear Approximation in Frequency Domain

88
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....
88
Frequency-Domain Interpretation of PD Control01:24

Frequency-Domain Interpretation of PD Control

98
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...
98
Propagation Speed of Electromagnetic Waves01:30

Propagation Speed of Electromagnetic Waves

3.3K
Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
3.3K
Time and frequency -Domain Interpretation of Phase-lag Control01:21

Time and frequency -Domain Interpretation of Phase-lag Control

87
Phase-lag controllers are widely used in control systems to improve stability and reduce steady-state errors. A dimmer switch controlling the brightness of a light bulb serves as a practical example of phase-lag control, gradually adjusting the bulb's brightness. Mathematically, phase-lag control or low-pass filtering is represented when the factor 'a' is less than 1.
Phase-lag controllers do not place a pole at zero, but instead influence the steady-state error by amplifying any...
87
Time and frequency -Domain Interpretation of Phase-lead Control01:24

Time and frequency -Domain Interpretation of Phase-lead Control

80
Phase-lead controllers are commonly used in various control systems to enhance response speed and stability. Adjusting the brightness on a television screen offers a practical example of phase-lead control. When contrast is enhanced, a phase-lead controller is employed. Mathematically, phase-lead control is identified when the first parameter is smaller than the second.
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
80

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

High-Throughput Monitoring of Electrochemical Reactions on Single Nanoparticles via Fourier Transform Wide-Field Electrochemical Hyperspectral Imaging.

ACS nano·2026
Same author

ILC imbalance - a new piece in the gut-kidney axis puzzle.

Frontiers in immunology·2026
Same author

Haplotype-resolved methylomes reveal parent-of-origin DNA methylation imbalance in autism spectrum disorder.

Science advances·2026
Same author

Effectiveness and cost-effectiveness of pembrolizumab in persistent, recurrent, or metastatic cervical cancer with PD-L1 CPS 1-10: secondary analysis of KEYNOTE-826 using innovative KMSubtraction.

Expert review of pharmacoeconomics & outcomes research·2026
Same author

Assessment of intra-channel fiber nonlinearity compensation in 200-GBaud and beyond coherent optical transmission systems.

Optics express·2026
Same author

The Role of Tet2 in Medial Vascular Calcification.

JACC. Basic to translational science·2026
Same journal

Gaussian-modulated continuous-variable quantum key distribution over 60 km fiber using an integrated silicon photonic receiver.

Optics letters·2026
Same journal

E2E-OCT: end-to-end joint learning model using optical coherence tomography images for vocal cord leukoplakia diagnosis.

Optics letters·2026
Same journal

Holographic generation of panoramic 3D scenes by concave ellipsoidal mirror reflection.

Optics letters·2026
Same journal

Dual-pilot phase recovery with pair-wise maximum-ratio combining for coherent PONs.

Optics letters·2026
Same journal

Mapping the whispering gallery modes of a CaF<sub>2</sub> disk resonator with half-tapered fibers to estimate the fundamental mode volume.

Optics letters·2026
Same journal

Quantitative estimation of deep-subwavelength scale via dark-field scattering axial energy concentration decay profiles.

Optics letters·2026
查看所有相关文章

相关实验视频

Updated: Jun 14, 2025

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

9.8K

基于光学连续脉冲位置调制的模拟RoF通过频域位置估计.

Yicheng Xu, Yixiao Zhu, Mengfan Fu

    Optics letters
    |August 29, 2024
    PubMed
    概括
    此摘要是机器生成的。

    本研究介绍了基于光学连续脉冲位置调制的模拟无线电-光纤 (OCPPM-RoF) 以提高移动前程的性能. OCPPM-RoF方案提高了信号与噪声的比率,为未来的前程运输网络提供了高级调制格式.

    更多相关视频

    Quasi-light Storage for Optical Data Packets
    07:45

    Quasi-light Storage for Optical Data Packets

    Published on: February 6, 2014

    10.8K
    Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
    14:18

    Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

    Published on: February 28, 2016

    11.4K

    相关实验视频

    Last Updated: Jun 14, 2025

    Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
    09:43

    Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

    Published on: March 20, 2017

    9.8K
    Quasi-light Storage for Optical Data Packets
    07:45

    Quasi-light Storage for Optical Data Packets

    Published on: February 6, 2014

    10.8K
    Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
    14:18

    Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

    Published on: February 28, 2016

    11.4K

    科学领域:

    • 光学通信是指光学通信的应用.
    • 无线网络是无线网络.
    • 信号处理 信号处理

    背景情况:

    • 模拟无线电光纤 (A-RoF) 为移动前线提供高光谱效率和低复杂性.
    • 光纤链路的可靠性通常会限制A-RoF性能.
    • 需要先进的调制方案来克服这些局限性.

    研究的目的:

    • 提出并展示一个新的OCPPM-RoF方案,用于增强移动前线运输.
    • 在A-RoF系统中解离添加噪声并提高信号保真度.
    • 为了使各种调制格式的信号噪声比率灵活调整.

    主要方法:

    • 在OCPPM-RoF方案中将无线波形的幅度映射到光脉冲位置.
    • 实现频域连续位置估计 (FD-CPE) 算法用于信号调节.
    • 使用交叉功率频谱计算和加权最小平方来估计延迟的实验验证.

    主要成果:

    • 在OCPPM-RoF方案成功地解开添加噪声,提高信号质量.
    • 恢复的信号噪声比 (SNR) 灵活调整为31.8至54.0dB.
    • 支持高阶调制格式的传输,包括256-QAM到65536-QAM.

    结论:

    • OCPPM-RoF为未来的移动前线运输系统提供了一个有前途的解决方案.
    • 拟议的方案有效地解决了传统A-RoF的局限性.
    • 灵活的SNR调整和对高级QAM格式的支持突出了其潜力.