太赫兹近场通信信道特性研究综述

A review on the characteristics of terahertz near field communication channels

为满足不断提高的数据传输需求,未来的通信技术会向更高的载波频率发展,基于太赫兹频段的通信可实现高稳定性和高数据速率通信。本文综述了太赫兹近场信道特性及信道建模的研究进展,介绍了太赫兹频段下对近场信道分析的必要性,对比了远近场信道的区别;针对太赫兹近场通信信道,介绍了球面波前建模与基于电磁波理论的模型;结合信道建模技术与近场信道特点,介绍了可用于近场信道建模的方法论;最后对太赫兹近场信道特性研究进行了总结并对未来发展方向进行了展望。

The evolution of future communication technologies towards higher carrier frequencies is inevitable to meet the escalating demands for data transmission rates.The terahertz(THz)spectrum emerges as a critical enabler for communication systems characterized by high stability and rapid data transfer rates.This paper reviews research progress on terahertz near-field channel characteristics and channel modeling.Firstly,the necessity of near-field channel analysis in the terahertz frequency band is introduced,the difference between near and far field channels is compared,and the spherical wavefront modeling and the model based on electromagnetic wave theory are introduced.Secondly,combining the channel modeling technology and the characteristics of the near-field channel,the methodology that can be used in near-field channel modeling is presented.Finally,the paper encapsulates the findings on terahertz near-field channel characteristics and offers insights into potential future research.