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
概括
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.
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.
更多相关视频
08:48Combining Multiple Data Acquisition Systems to Study Corticospinal Output and Multi-segment Biomechanics
Published on: January 9, 2016
7.0K
08:01Rapid Scan Electron Paramagnetic Resonance Opens New Avenues for Imaging Physiologically Important Parameters In Vivo
Published on: September 26, 2016
9.5K
相关概念视频
01:19Contact-dependent Signaling
Contact-dependent signaling, as the name suggests, requires that communicating cells be in direct contact with each other. This is achieved either through receptor-ligand interactions or by specialized cytoplasmic channels that allow the flow of small molecules between cells. In animal cells, channels called gap junctions facilitate contact-dependent signaling in certain tissues, whereas, plasmodesmata perform a similar function in plants.
Gap Junctions
In animal cells, gap junctions are formed...
Gap Junctions
In animal cells, gap junctions are formed...
01:21Pilot and Numeric Relaying
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: