How to Deploy RIS to Minimize Delay Spread in HST Communications: Railroad Side, or Train Side?

研究成果: Conference contribution同行評審

1 引文 斯高帕斯(Scopus)

摘要

High-speed train (HST) communications are challenging due to fast time-varying channels and Doppler effects. Recently, reconfigurable intelligent surface (RIS) has been envisioned to be one of the most promising technologies for tackling the difficult problems of HST communications. In this paper, we first propose a transmission model of the HST communication system using RIS on the train side. Then, different strategies for mitigating delay spread (DS) are compared from the perspectives of the phase shift set design and deployment of the RIS. In addition, we derive the spectral efficiency (SE) expression of the proposed system. Numerical evaluations validate the analytical results and reveal that the RIS on the train side not only increases SE but also reduces DS.

原文English
主出版物標題2022 IEEE 22nd International Conference on Communication Technology, ICCT 2022
發行者Institute of Electrical and Electronics Engineers Inc.
頁面793-797
頁數5
ISBN(電子)9781665470674
DOIs
出版狀態Published - 2022
事件22nd IEEE International Conference on Communication Technology, ICCT 2022 - Virtual, Online, China
持續時間: 11 11月 202214 11月 2022

出版系列

名字International Conference on Communication Technology Proceedings, ICCT
2022-November-November

Conference

Conference22nd IEEE International Conference on Communication Technology, ICCT 2022
國家/地區China
城市Virtual, Online
期間11/11/2214/11/22

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