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Rapid Scan Electron Paramagnetic Resonance Opens New Avenues for Imaging Physiologically Important Parameters In Vivo
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在RIS辅助的移动通信系统中获得CSI.

Yu Han1, Wankai Tang1, Xiao Li1

  • 1National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China.

National science review
|July 17, 2023
PubMed
概括
此摘要是机器生成的。

可重新配置的智能表面 (RIS) 提供低成本的移动通信,但在道状态信息 (CSI) 获取方面面临挑战. 本综述概述了在RIS辅助系统中有效获得CSI的现有解决方案.

关键词:
这里是RIS RIS.频道估计 频道估计混合RIS是指一个混合的RIS.隐含的 CSI 是一个隐含的 CSI.

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科学领域:

  • 无线通信系统无线通信系统
  • 电磁波操纵是一种电磁波操纵.
  • 信号处理 信号处理

背景情况:

  • 可重新配置的智能表面 (RIS) 为移动通信提供了低成本解决方案.
  • 有效的通道状态信息 (CSI) 获取对于最佳的RIS性能至关重要.
  • 低成本的RIS硬件为CSI估计带来了独特的挑战.

研究的目的:

  • 为RIS辅助移动通信提供CSI获取现有研究的全面概述.
  • 在RIS系统中对CSI获取的不同方法进行分类和分析.
  • 突出这一领域的挑战和未来的研究方向.

主要方法:

  • 关于RIS辅助通信近期进展的文献综述.
  • 基于架构和数学解决方案的CSI获取技术的分类.
  • 分析不同CSI收购方法之间的权衡.

主要成果:

  • 确定了用于CSI获取的关键架构改进.
  • 总结了CSI估计的各种数学算法和框架.
  • 强调有效培训和反机制的重要性.

结论:

  • 对于基于RIS的系统来说,CSI收购仍然是一个关键的瓶.
  • 需要继续进行研究,以开发强大而高效的CSI获取技术.
  • 未来的工作应该集中在实际实施和性能优化上.