Spatially Correlated Rayleigh Fading Characteristics of RIS-Aided mmWave MIMO Communications

被引：4
|
作者：
Li, Guang-Hui [1 ]
Yue, Dian-Wu [1 ,2 ]
Jin, Si-Nian [1 ]
机构：
[1] Dalian Maritime Univ, Coll Informat Sci & Technol, Dalian 116026, Liaoning, Peoples R China
[2] Southeast Univ, State Key Lab Millimeter Waves, Nanjing 210096, Jiangsu, Peoples R China
来源：
IEEE COMMUNICATIONS LETTERS | 2023年 / 27卷 / 08期
关键词：
Reconfigurable intelligent surface; mmWave; MIMO; rayleigh fading; RECONFIGURABLE INTELLIGENT SURFACES; DESIGN; TRANSMISSION;
D O I：
10.1109/LCOMM.2023.3289959
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
Reconfigurable intelligent surface (RIS) is a promising solution that can reconfigure a mmWave MIMO channel at low cost. This letter first investigates the improvement caused by multiple RISs on the rank and the condition number of the mmWave MIMO channel matrix. Then it demonstrates that as the number of RISs increases, the mmWave channel can be characterized by a spatially correlated Rayleigh channel, which has a rich scattering environment as a traditional microwave channel. Finally, the simulation results verify the derived closed-form expressions for the variance of the equivalent Rayleigh fading channel matrix with random or optimized RIS phase shifts.
引用
收藏
页码：2222 / 2226
页数：5
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