STAR: SIMULTANEOUS TRANSMISSION AND REFLECTION FOR 360° COVERAGE BY INTELLIGENT SURFACES

被引：383

作者：

Liu, Yuanwei ^{[1
]}

Mu, Xidong ^{[4
]}

Xu, Jiaqi ^{[2
]}

Schober, Robert ^{[5
]}

Hao, Yang ^{[3
]}

Poor, H. Vincent ^{[6
]}

Hanzo, Lajos ^{[7
]}

机构：

[1] Queen Mary Univ London, London, England

[2] Queen Mary Univ London, Sch Elect Engn & Comp Sci, London, England

[3] Queen Mary Univ London, Antennas & Electromagnet, London, England

[4] Beijing Univ Posts & Telecommun, Beijing, Peoples R China

[5] Friedrich Alexander Univ Erlangen Nurnberg FAU, Erlangen, Germany

[6] Princeton Univ, Princeton, NJ 08544 USA

[7] Univ Southampton, Southampton, Hants, England

来源：

IEEE WIRELESS COMMUNICATIONS | 2021年 / 28卷 / 06期

基金：

欧洲研究理事会; 英国工程与自然科学研究理事会;

关键词：

D O I：

10.1109/MWC.001.2100191

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

A novel simultaneous transmitting and reflecting (STAR) system design relying on reconfigurable intelligent surfaces (RISs) is conceived. First, an existing prototype is reviewed, and the potential benefits of STAR-RISs are discussed. Then the key differences between conventional reflecting-only RISs and STAR-RISs are identified from the perspectives of hardware design, physical principles, and communication system design. Furthermore, the basic signal model of STAR-RISs is introduced, and three practical protocols are proposed for their operation, namely energy splitting, mode switching, and time switching. Based on the proposed protocols, a range of promising application scenarios are put forward for integrating STAR-RISs into next-generation wireless networks. By considering the downlink of a typical RIS-aided multiple-input single-output system, numerical case studies are provided for revealing the superiority of STAR-RISs over other baselines when employing the proposed protocols. Finally, several open research problems are discussed.

引用

页码：102 / 109

页数：8

共 15 条

[1] Combating the Distance Problem in the Millimeter Wave and Terahertz Frequency Bands [J].