无线电通信技术2024，Vol.50Issue(2)：253-262,10.DOI:10.3969/j.issn.1003-3114.2024.02.005
智能超表面近场通信的机遇与挑战
Opportunities and Challenges of Near-field Communication with RIS
菅梦楠 1赵亚军1
作者信息
- 1. 中兴通讯股份有限公司,北京 100192||移动网络和移动多媒体技术国家重点实验室,广东深圳 518055
- 折叠
摘要
Abstract
Achieving intelligent and controllable wireless environments is one hot research topic in wireless communication.As a key technology of the 6G,Reconfigurable Intelligent Surface(RIS)is considered a revolutionary technology for electromagnetic environ-ment control.RIS significantly enhances network performance in an eco-friendly and cost-effective manner.It redefines the propagation paradigm of wireless systems through joint optimization of transmitters,receivers,and the propagation environment,constructing an intel-ligently controllable wireless propagation environment.RIS typically relies on passive control mechanisms,which introduce multiplicative path loss issues,making the deployment of ultra-large-scale control units crucial.With the expansion of array size and the increase in frequency,traditional plane wave assumption becomes inapplicable,and near-field transmission becomes inevitable.To precisely charac-terize the near-field transmission of RIS,it is essential to study the transmission model of near-field spherical waves and their impact in the radiative near-field region.This paper delves the channel model of RIS-assisted near-field wireless communication systems and designs adaptive precoding schemes and transmission strategies.The aim of this paper is to fully leverage potential advantages of RIS-assisted near-field communication,enhancing the performance and efficiency of entire wireless communication system.关键词
6G/智能超表面/近场通信/分数傅里叶变换/预编码设计Key words
6G/RIS/near-field communication/fractional fourier transform/precoding design分类
信息技术与安全科学引用本文复制引用
菅梦楠,赵亚军..智能超表面近场通信的机遇与挑战[J].无线电通信技术,2024,50(2):253-262,10.
