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相关概念视频

UV–Vis Spectroscopy: Molecular Electronic Transitions01:16

UV–Vis Spectroscopy: Molecular Electronic Transitions

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In Ultraviolet–Visible (UV–Vis) spectroscopy, the absorption of electromagnetic radiation is used to probe the electronic structure of molecules. This technique provides insights into molecular electronic transitions, particularly the movement of electrons between different molecular orbitals. Radiation is absorbed if the energy of the electromagnetic radiation passing through the molecule is precisely equal to the energy difference between the excited and ground states. During this...
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Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview01:02

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Ultraviolet–visible (UV–visible or UV–Vis) spectroscopy is an analytical technique that investigates the interaction between matter and UV–Vis light within the electromagnetic spectrum. This method is widely used for its versatility, simplicity, and relatively quick data acquisition, making it valuable for both qualitative and quantitative analysis. When UV–Vis radiation passes through a material,  molecules absorb light depending on the energy required for...
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相关实验视频

Updated: Jun 29, 2025

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

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加强可见光通信的安全性:一种基于禁忌搜索的发射器选择方法.

Ge Shi1, Wei Cheng2, Xiang Gao2

  • 1The School of Information Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450046, China.

Sensors (Basel, Switzerland)
|March 28, 2024
PubMed
概括
此摘要是机器生成的。

这项研究通过优化多个用户的发光二极管 (LED) 选择来提高可见光通信 (VLC) 的安全性. 一个禁忌搜索算法有效地最大限度地提高了总量保密率,确保了安全的室内无线通信.

关键词:
选择LED灯光的选择物理层的安全性是物理层的安全性.的保密率.可见光通信可见光通信

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相关实验视频

Last Updated: Jun 29, 2025

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科学领域:

  • 无线通信无线通信
  • 信息安全 信息安全
  • 光学工程是指光学工程.

背景情况:

  • 可见光通信 (VLC) 系统提供高带宽,但由于信号泄漏而面临安全挑战.
  • 在室内VLC环境中确保用户隐私和数据保密至关重要.
  • 用户 (UE) 和分布式发光二极管 (LED) 的随机定位使安全优化变得复杂.

研究的目的:

  • 为了最大限度地提高VLC系统中多个用户的总保密率.
  • 开发一种高效的算法,为每个用户选择最佳的LED,以提高机密性.
  • 调查用于实际VLC安全的低复杂度LED选择策略.

主要方法:

  • 为最大化总量保密率制定一个非凸的优化问题.
  • 开发基于 tabu 搜索的 LED 选择算法,以避免局部最佳.
  • 介绍了三个计算效率高的LED选择策略.

主要成果:

  • 拟议的禁忌搜索算法在全球最佳值的1%内实现了保密性能.
  • 开发的算法有效地管理了试验向量,以加快搜索过程.
  • 与全球最佳相比,低复杂度的战略显示出28%的绩效差距.

结论:

  • 标签搜索算法为增强VLC系统安全提供了近乎最佳的解决方案.
  • 有效的LED选择对于最大限度地提高室内VLC环境中的保密率至关重要.
  • 对低复杂度策略的进一步研究可以促进安全VLC系统的实际部署.