相关实验视频

Updated: Apr 30, 2026

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

对各种水环境中的水下光学无线通信调制技术的性能分析和优化

M Mokhtar Zayed^1,2, Mona Shokair^3,4

¹Department of Communications, Faculty of Electronic Engineering, Menoufia University, Menoufia Governorate, Menouf City, Egypt. mohammed.mokhtar.zayed@gmail.com.

Scientific reports

|September 17, 2025

概括

开关键 (OOK) 提供了最长的水下通信范围,而像64-QAM这样的先进方案提供了更高的数据速率. 选择正确的调制平衡范围和光谱效率,用于各种水下应用.

科学领域:

光学无线通信的无线通信
水产技术水产技术
信号处理信号处理

背景情况:

水下光学无线通信 (UOWC) 面临来自吸收,散射和流的性能挑战.
调制方案的选择对于可靠的UOWC系统至关重要.

研究的目的:

在UOWC系统中全面分析六个调制方案的性能.
在各种水下条件下评估通信范围,功率和通道容量之间的权衡.

主要方法:

模拟执行了开关键 (OOK),脉冲位置调制 (PPM),方位相位移转键 (QPSK),差异相位移转键 (DPSK),32相位移转键 (32-PSK) 和64方位振幅调制 (64-QAM) 的模拟性能.
使用520nm的LED和LD光源与光倍增器探测器.
评估了比特错误率 (BER),信号噪声比 (SNR),通道容量和跨不同水类和流强度的链接范围等指标.

主要成果:

开关键 (OOK) 实现了最长的链路距离 (123.73 m在纯海水中).
64方位振幅调制 (64-QAM) 显示出更高的频道容量 (53.23 bps/Hz).
高级调制方案需要增加功率和SNR.

结论:

在UOWC中,通信范围和光谱效率之间存在着根本的权衡.
这些发现指导了水下环境监测,机器人技术和防御的最佳调制策略的选择.

关键词:

比特错误率 (BER) 是一个比特错误率.调制技术的调制技术.功率效率功率效率功率效率功率效率功率效率信号与噪声比 (SNR) 是指信号与噪声的比率.频谱效率是指光谱的使用效率.流效应. 流的影响.水下光学无线通信 (UOWC) 是一种无线通信.

更多相关视频

Design and Fabrication of an Optical Fiber Made of Water

Design and Fabrication of an Optical Fiber Made of Water

Published on: November 8, 2018

Wireless Electrophysiological Recording of Neurons by Movable Tetrodes in Freely Swimming Fish

Wireless Electrophysiological Recording of Neurons by Movable Tetrodes in Freely Swimming Fish

Published on: November 26, 2019

相关概念视频

Propagation Speed of Electromagnetic Waves

Propagation Speed of Electromagnetic Waves

Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:

Methods of Medium Optimization

Methods of Medium Optimization

Optimizing growth media enhances microbial proliferation and maximizes product yield. Statistical experimental design methodologies provide structured and reproducible approaches, offering progressively higher levels of robustness and efficiency.The One-Factor-at-a-Time (OFAT) MethodThe One-Factor-at-a-Time (OFAT) method involves adjusting a single variable while keeping all others constant. However, it cannot detect interactions between variables, often leading to suboptimal outcomes when...