On the Performance of the IRS-Aided Communication Systems With Analog Mismatches

被引：0
|
作者：
Wen, Liyuan [1 ,2 ,3 ]
Han, Kangqi [2 ]
Kang, Kai [2 ,4 ]
Qian, Hua [2 ]
机构：
[1] ShanghaiTech Univ, Sch Informat Sci & Technol, Shanghai, Peoples R China
[2] Chinese Acad Sci, Shanghai Adv Res Inst, Beijing, Peoples R China
[3] Univ Chinese Acad Sci, Beijing, Peoples R China
[4] Chinese Acad Sci, SIMIT, Key Lab Wireless Sensor Network Commun, Beijing, Peoples R China
来源：
2021 IEEE 32ND ANNUAL INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS (PIMRC) | 2021年
基金：
中国国家自然科学基金;
关键词：
Intelligent reflecting surface (IRS); analog mismatches; achievable rate; multi-user multiple-input single-output (MU-MISO); INTELLIGENT REFLECTING SURFACE; CAPACITY;
D O I：
10.1109/PIMRC50174.2021.9569591
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
The intelligent reflecting surface (IRS) technology has been recently proposed as a promising solution to improve the coverage of communication systems. The performance of the IRS-aided communication systems, on the other hand, highly depends on the controllability and consistency of the IRS elements. Previous works mainly discussed the IRS system performance with analog mismatches in the single-user scenario. In this paper, we study the performance of the IRS-aided downlink multi-user multiple-input single-output (MU-MISO) system in the presence of analog mismatches, where the inter-user interference (IUI) may greatly degrade the system performance. The upper bound of general system performance expression is derived. Closed-form expressions can be obtained for some special cases. We show that the system performance is significantly degraded when analog mismatches exist, since the IUI shows up and can not be completely removed.
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页数：6
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