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相关概念视频

Maximum Power Transfer01:16

Maximum Power Transfer

261
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.
By substituting the entire circuit with...
261
Pilot and Numeric Relaying01:21

Pilot and Numeric Relaying

86
Pilot relaying is a type of differential protection used in power systems. It compares electrical quantities at the terminals of equipment via a communication channel instead of direct relay interconnection. This method is essential for transmission lines where the terminals are far apart, typically up to 80 km for lines with 69 to 115 kV ratings. Four types of communication channels are used for pilot relaying:
86

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相关实验视频

Updated: Jul 5, 2025

Integration of 5G Experimentation Infrastructures into a Multi-Site NFV Ecosystem
10:15

Integration of 5G Experimentation Infrastructures into a Multi-Site NFV Ecosystem

Published on: February 3, 2021

3.8K

集成传感和安全通信与XL-MIMO.

Ping Sun1, Haibo Dai2, Baoyun Wang1

  • 1School of Communication and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China.

Sensors (Basel, Switzerland)
|January 11, 2024
PubMed
概括

极大规模的MIMO系统增强了综合传感和安全通信. 束聚焦最大限度地提高了用户的保密率,即使干扰近场区域的雷达目标.

科学领域:

  • 电气工程 电气工程
  • 无线通信无线通信
  • 信号处理 信号处理

背景情况:

  • 综合传感和通信 (ISAC) 系统在近场环境中面临着挑战.
  • 极大规模的多输入多输出 (XL-MIMO) 提供了增强性能的潜力.
  • 在传感实体的存在下确保通信安全至关重要.

研究的目的:

  • 在XL-MIMO授权的ISAC系统中研究近场光束聚焦设计.
  • 为了最大限度地提高通信用户可实现的保密率.
  • 为了满足对雷达目标的传输光束增强模式要求.

主要方法:

  • 全球优化基于半确定的放松 (SDR) 的两阶段程序.
  • 为降低计算复杂度开发一个次优化解决方案.
  • 分析近场区域的系统性能.

主要成果:

  • 梁聚焦设计使得积极的隐蔽率.
  • 有效管理雷达目标的干扰.
  • 即使与同处的目标和用户进行可行的安全通信.

结论:

关键词:
聚焦光束是为了聚焦光束.集成传感和通信.在附近的田野附近.车辆特设网络 (VANETs) 的使用.

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  • 近场光束聚焦是XL-MIMO系统中安全ISAC的可行策略.
  • 提出的优化方法可以实现最佳和次优化解决方案.
  • 这项研究证明了XL-MIMO在增强安全和传感能力方面的潜力.