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相关概念视频

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.
The process of harmonizing these impedances begins with a clear understanding of the input and output signals. Once these signals are known, the...
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Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
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在毫米波通信中对RIS辅助的MIMO系统进行通道估计.

Ying Liu1, Honggui Deng1, Chengzuo Peng1

  • 1School of Physics and Electronics, Central South University, Lushan South Road, Changsha 410083, China.

Sensors (Basel, Switzerland)
|July 8, 2023
PubMed
概括

由于可重新配置智能表面 (RIS) 中的许多参数,在6G中精确的通道估计具有挑战性. 本研究引入了一种新的两相框架,使用直角匹配追求 (OMP) 和线性最小平均平方误差 (LMMSE) 来提高准确性,特别是在低信号噪声比 (SNR) 时.

科学领域:

  • 无线通信是一种无线通信.
  • 信号处理 信号处理
  • 超材料是指一种超材料.

背景情况:

  • 精确的通道估计对于6G网络至关重要,但可重新配置智能表面 (RIS) 中的高参数数量带来了重大挑战.
  • 现有的方法难以准确,特别是在上链多用户通信场景和低信号噪声比 (SNR) 条件下.

研究的目的:

  • 为使用RIS的6G上联多用户通信系统提出一种新的双相通道估计框架.
  • 为了提高通道估计的准确性,并减少与传统技术相比,飞行员的开销.

主要方法:

  • 一个两阶段的框架,集成直角匹配追求 (OMP) 通过识别和利用最相关的传感矩阵列,有效地减少飞行员上空费用.
  • 线性最小平均平方误差 (LMMSE) 估计用于减轻噪声效应并提高准确性,特别是在低SNR时.

主要成果:

  • 拟议的基于OMP的LMMSE方法显示,与最小平方 (LS) 和传统的OMP算法相比,道估计准确度更高.
  • 该方法通过消除冗余性有效降低了飞行员的开销,这是资源有限的6G系统的关键优势.

结论:

  • 新的双相通道估计框架为RIS辅助的6G网络提供了显著的精度和效率改进.
关键词:
LMMSE LMMSE 在线阅读频道估计 频道估计毫米波的波浪.可重新配置的智能表面.

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  • 整合OMP和LMMSE为上链多用户通信提供了强大的解决方案,特别是在具有挑战性的低SNR条件下.