Reconfigurable Intelligent Surface-Based Symbiotic Radio for 6G: Design, Challenges, and Opportunities

被引：46

作者：

Lei, Xianfu ^{[1
]}

Wu, Mingjiang ^{[1
]}

Zhou, Fuhui ^{[3
]}

Tang, Xiaohu ^{[1
]}

Hu, Rose Qingyang ^{[4
,5
]}

Fan, Pingzhi ^{[2
]}

机构：

[1] Southwest Jiaotong Univ, Sch Informat Sci & Technol, Chengdu, Peoples R China

[2] Southwest Jiaotong Univ, Chengdu, Peoples R China

[3] Nanjing Univ Aeronaut & Astronaut, Coll Elect & Informat Engn, Nanjing, Peoples R China

[4] Utah State Univ, Elect & Comp Engn Dept, Logan, UT 84322 USA

[5] Utah State Univ, Coll Engn, Res, Logan, UT 84322 USA

来源：

IEEE WIRELESS COMMUNICATIONS | 2021年 / 28卷 / 05期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Receivers; RF signals; 6G mobile communication; Wireless communication; Modulation; Radio transmitters; Array signal processing; NETWORKS;

D O I：

10.1109/MWC.121.2100126

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

Energy efficiency (EE) and spectrum efficiency (SE) are two key performance metrics in the sixth generation (6G) wireless communication networks due to the ultra-massive connectivity requirements in future Internet of Things scenarios such as smart cities and factories. Reconfigurable intelligent surface (RIS)-based symbiotic radio (SR) is a promising technology to simultaneously achieve high EE and SE. In this article, a comprehensive review of the RIS-based SR system is presented including the system architectures, operating principles, technical advantages, application scenarios and state-of-the-art transceiver design. Moreover, a star-QAM-aid-ed joint spatial modulation scheme is proposed to realize RIS-based SR and simulation results are provided to illustrate the performance of the proposed scheme. Finally, the critical design challenges for the implementation of RIS-based SR and some promising future research directions are discussed.

引用

页码：210 / 216

页数：7

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