TY - JOUR
T1 - STAR
T2 - Simultaneous Transmission and Reflection for 360° Coverage by Intelligent Surfaces
AU - Liu, Yuanwei
AU - Mu, Xidong
AU - Xu, Jiaqi
AU - Schober, Robert
AU - Hao, Yang
AU - Poor, H. Vincent
AU - Hanzo, Lajos
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021/12/1
Y1 - 2021/12/1
N2 - 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.
AB - 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.
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U2 - 10.1109/MWC.001.2100191
DO - 10.1109/MWC.001.2100191
M3 - Article
AN - SCOPUS:85124223461
SN - 1536-1284
VL - 28
SP - 102
EP - 109
JO - IEEE Wireless Communications
JF - IEEE Wireless Communications
IS - 6
ER -