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相关概念视频

The Maximum Power Transfer Theorem01:20

The Maximum Power Transfer Theorem

559
Consider a linear AC Thevenin equivalent circuit connected to a load impedance.
The load connected draws the current, and the circuit delivers the power to the load. The alternating current flowing through the load is determined using the rectangular form of voltages, currents, network impedance, and load impedance. The average power delivered to the load is obtained from the product of the square of current and load resistance.
559

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相关实验视频

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智能反射地表辅助煤矿无线通信系统的速度优化

Yang Liu1, Zhao Yang1, Bin Wang1

  • 1School of Communication and Information Engineering, Xi'an University of Science and Technology, Xi'an 710054, China.

Entropy (Basel, Switzerland)
|October 25, 2024
PubMed
概括

本研究引入了一种新的三步方法,以优化智能反射表面 (IRS) 部署和电力,以提高煤矿的无线通信速率. 拟议的系统显著提高了可实现的有效率,超过了现有方案.

科学领域:

  • 无线通信系统无线通信系统
  • 信号处理 信号处理
  • 电磁学 电磁学 电磁学 电磁学

背景情况:

  • 煤矿环境对无线通信提出了独特的挑战,原因是信号阻塞和干扰.
  • 智能反射表面 (IRS) 为改善矿山等复杂环境中的信号传播提供了有希望的解决方案.
  • 优化IRS部署和系统参数对于在此类环境中最大限度地提高通信效率至关重要.

研究的目的:

  • 为煤矿无线系统的IRS部署位置,传输功率和相位转移提出联合优化方法.
  • 为了解决由复杂的煤矿通道模型产生的非凸优化问题.
  • 在IRS协助的煤矿通信中,最大限度地提高用户站的有效可实现率.

主要方法:

  • 开发了一种三步联合优化方法.
  • 使用辅助变量,对数运算和泰勒近似来处理非凸的优化.
  • 该方法共同优化了IRS部署,传输功率和IRS相位移.

主要成果:

  • 与其他方案相比,拟议的方法显著提高了12.32%至54.17%的有效可实现率.
  • 最佳的IRS部署位置与最初的部署位置无关.
  • 该方案在不同的道墙粗度中表现出强大的性能.
关键词:
可以实现的利率.煤矿无线通信系统是煤矿的无线通信系统.智能反射表面是一个智能反射表面.优化利率的优化 利率优化

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结论:

  • 三步联合速率优化方法有效地提高了煤矿的无线通信.
  • 当IRS技术被最佳地部署时,可以克服重大环境挑战.
  • 开发的优化策略为未来的地下无线网络设计提供了宝贵的工具.