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Mesh Analysis for AC Circuits01:12

Mesh Analysis for AC Circuits

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In the domain of radio communication, the significance of impedance matching must be considered. It is crucial to ensure the efficient transmission of signals between radio transmitters and receivers. Achieving this balance involves using impedance-matching circuits, with one fundamental configuration comprising a resistor, capacitor, and inductor.
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Plants and other photosynthetic organisms comprise pigments capable of absorption of direct sunlight. These pigments are present in the reaction center - the main site of photochemical reactions as well as in the antenna complex. Under average light conditions, the rate at which reaction center pigments absorb light is far below the electron transport chain's capacity. As a result, the reaction center alone cannot provide enough energy to drive photosynthesis. The photosynthetic efficiency can...
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Response Surface Methodology (RSM) is a collection of statistical and mathematical techniques used to develop, improve, and optimize processes. It is particularly valuable when many input variables or factors potentially influence a response variable.
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Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
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对于可重配置的智能表面辅助多用户移动天线系统,可实现的速度优化.

Liji Yu1, Yuhui Ren1

  • 1School of Information Science and Technology, Northwest University, Xi'an 710127, China.

Sensors (Basel, Switzerland)
|August 14, 2025
PubMed
概括

本研究介绍了可重新配置的智能表面 (RIS) 辅助移动天线 (MA) 系统的优化框架. 这种新的方法通过优化光束成形和天线位置来提高光谱效率,优于固定位置方案.

科学领域:

  • 无线通信无线通信
  • 优化理论 优化理论
  • 信号处理 信号处理

背景情况:

  • 可重新配置的智能表面 (RIS) 和可移动天线 (MA) 为增强的无线通信系统提供了潜力.
  • 由于非线性空间约束,在RIS辅助的MA系统中,对光束成形和天线位置的联合优化是复杂的.
  • 现有的方法,通常依赖于梯度搜索,不能充分利用可移动天线提供的自由度.

研究的目的:

  • 为RIS辅助的MA系统提出一个新的优化框架.
  • 为解决光束成形和天线位置的联合优化.
  • 通过利用RIS和MA技术的综合优势来提高频谱效率.

主要方法:

  • 为RIS辅助的MA系统开发了一个新的优化框架.
  • 天线定位被重新定义为一个顺序二次编程 (SQP) 问题,以处理非线性空间约束.
  • 一个交替的优化方案将问题解为光束成形 (使用最大比率传输和固定点代) 和天线位置优化 (通过SQP).

主要成果:

  • 拟议的方法显著提高了光谱效率.
  • 与固定头寸计划相比,实现了大约25%的绩效改进.
  • 基于SQP的方法有效地利用可移动天线的位置自由度,超过梯度搜索方法.
关键词:
优化天线位置优化梁造型 梁造型 梁造型 梁造型可以移动的天线可重新配置的智能表面 (RIS)顺序二进制编程 (SQP) 是一种

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结论:

  • 拟议的优化框架有效地整合了RIS和MA技术,以实现卓越的无线通信性能.
  • 在复杂的空间约束下,SQP重构为优化天线位置提供了一个有效的解决方案.
  • 这项工作展示了一种更有效的方法,以利用移动天线在智能表面辅助系统中的全部潜力.