基于可编程无线环境的太赫兹频段多射线信道模型

doi:10.11959/j.issn.1000-436x.2019161

通信学报 ›› 2019, Vol. 40 ›› Issue (7): 162-168.doi: 10.11959/j.issn.1000-436x.2019161

基于可编程无线环境的太赫兹频段多射线信道模型

罗文宇,刘河潮

华北水利水电大学物理与电子学院，河南郑州 450046

修回日期:2019-06-05 出版日期:2019-07-25 发布日期:2019-07-30
作者简介:罗文宇（1982- ），男，河南正阳人，博士，华北水利水电大学讲师，主要研究方向为电磁超表面、无线能量传输、可编程无线环境。|刘河潮（1980- ），男，河南平顶山人，博士，华北水利水电大学讲师，主要研究方向为深度强化学习、视频编码、视频传输。
基金资助:
国家自然科学基金资助项目(U1804148)

Multi-ray channel modeling for programmable wireless environments in the terahertz band

Wenyu LUO,Hechao LIU

School of Physics and Electronics,North China University of Water Resources and Electric Power,Zhengzhou 450046,China

Revised:2019-06-05 Online:2019-07-25 Published:2019-07-30
Supported by:
The National Natural Science Foundation of China(U1804148)

摘要/Abstract

摘要：

基于可编程无线环境的太赫兹通信系统允许针对不同无线设备以最适宜的方式进行电磁波传播的编程定制，不仅能够改善严重的衰落、干扰和非视距问题，还能显著提升系统的安全性和隐私性。针对可编程无线环境中太赫兹无线通信的信道建模问题，首先基于射线跟踪技术，结合视距、非视距的传播模型建立了太赫兹波段可编程无线环境的多射线信道模型。然后，在所建立传播模型的基础上，进一步研究了反射系数、注水功率分配策略下的宽带信道容量、均方根时延扩展等问题。实验仿真和分析结果表明，可编程无线环境通过对电磁波传输的主动干预，大大减轻了太赫兹室内无线传播中路径损耗和多径衰落的影响，提高了系统的传输容量。所提模型为后期太赫兹通信系统，尤其是室内太赫兹通信系统的设计提供了参考依据。

关键词: 可编程无线环境, 射线跟踪, 太赫兹, 多径

Abstract:

Terahertz communication system based on programmable wireless environment allowed programming customization of electromagnetic wave propagation in the most suitable ways for different wireless devices.It could not only improve serious fading,interference and non-line-of-sight problems,but also significantly enhance the security and privacy of the system.The channel modeling of terahertz wireless communication in programmable wireless environment was focused.Firstly,a multi-ray channel model for terahertz-band programmable wireless environment was established based on ray tracing technology as well as the propagation model of line-of-sight and non-line-of-sight.Then,based on the established propagation model,reflection coefficient,the broadband channel capacity under the water-filling power allocation algorithm and the RMS delayed extension were further studied.The simulation and analysis results show that the programmable wireless environment greatly reduces the influence of path loss and multipath fading in terahertz wireless transmission through active interference in electromagnetic wave transmission,improves the transmission capacity of terahertz communication system,which provides a reference for the later design of terahertz communication system,especially indoor terahertz communication system.

Key words: programmable wireless environment, ray-tracing, terahertz band, multipath

中图分类号:

TN929

罗文宇,刘河潮. 基于可编程无线环境的太赫兹频段多射线信道模型[J]. 通信学报, 2019, 40(7): 162-168.

Wenyu LUO,Hechao LIU. Multi-ray channel modeling for programmable wireless environments in the terahertz band[J]. Journal on Communications, 2019, 40(7): 162-168.

图/表 5

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基于可编程无线环境的太赫兹频段多射线信道模型

Multi-ray channel modeling for programmable wireless environments in the terahertz band

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