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相关概念视频

Design Example01:23

Design Example

348
The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
348
Transmission Line Design Considerations01:23

Transmission Line Design Considerations

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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...
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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: Jul 24, 2025

Characterization of Anisotropic Leaky Mode Modulators for Holovideo
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预等分器的建模和设计,用于完全可操作的可见光通信系统.

Murat Bostanoglu1, Yaser Dalveren2, Ferhat Ozgur Catak3

  • 1Department of Electrical and Electronics Engineering, Gazi University, Ankara 06570, Turkey.

Sensors (Basel, Switzerland)
|July 8, 2023
PubMed
概括

本研究介绍了符合IEEE 802.15.13标准的现实可见光通信 (VLC) 系统的数字预等级器,以提高传输速率. 一个低成本的预等分器设计被提出作为一个可行的替代方案,用于实际的VLC应用程序.

关键词:
数字预等价数字化预等价发光二极管是一种发光二极管.灯光忠诚度 忠诚度 忠诚度这是光学无线通信.可见光通信可见光通信

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相关实验视频

Last Updated: Jul 24, 2025

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科学领域:

  • 光学通信是指光学通信.
  • 无线网络 无线网络 无线网络
  • 信号处理 信号处理

背景情况:

  • 可见光通信 (VLC) 系统利用发光二极管 (LED) 的进步来实现高速数据传输.
  • 在VLC系统中,LED带宽的限制对实现更高的数据速率构成了重大挑战.
  • 数字预等分器提供了一个有前途的解决方案,因为它们的结构简单和可重复使用性.

研究的目的:

  • 专门为符合IEEE 802.15.13标准的VLC系统提出和评估数字预等值器.
  • 为了解决在现实的IEEE 802.15.13 VLC环境中实施数字预等分器的缺乏研究.
  • 通过带宽高效调制方案评估拟议的预等效器的性能.

主要方法:

  • 基于来自符合IEEE 802.15.13系统的信号记录的现实VLC通道模型的开发.
  • 将通道模型集成到基于MATLAB的VLC系统模拟中.
  • 设计和模拟两个不同的数字预等值器来评估比特错误率 (BER) 性能.

主要成果:

  • 模拟证明了IEEE 802.15.13 VLC系统中拟议的数字预等分器的可行性.
  • 这两种预等值器都根据64-QAM和256-QAM调制方案进行了评估.
  • 第二个预等分器实现了较低的BER,但与第一项设计相比,其实施成本更高.

结论:

  • 第一个数字预等分器设计被确定为IEEE 802.15.13 VLC系统中实际实施的成本效益较高的替代方案.
  • 该研究验证了数字预等值在缓解VLC中的带宽限制方面的有效性.
  • 进一步的研究可能会探索优化第二个预等值器以改善成本-性能权衡.