DOF Augmentation via IRS for Line-of-Sight Communication

被引：0
|
作者：
Do, Heedong [1 ]
Lee, Namyoon [2 ]
Lozano, Angel [3 ]
机构：
[1] POSTECH, Pohang, South Korea
[2] Korea Univ, Seoul, South Korea
[3] Univ Pompeu Fabra, Barcelona, Spain
来源：
2022 56TH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS, AND COMPUTERS | 2022年
基金：
欧洲研究理事会; 新加坡国家研究基金会;
关键词：
WIRELESS CHANNELS; MIMO;
D O I：
10.1109/IEEECONF56349.2022.10051864
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
This paper analyzes the effect of deploying an intelligent reflective surface (IRS) in line-of-sight conditions at sub-terahertz frequencies. Besides the more obvious benefits of enhancing the received power and sidestepping blockages, at these frequencies an IRS can augment the number of spatial degrees of freedom even as the transmitter and receiver footprints remain fixed. This possibility, which is revealed only if the curved nature of the wavefronts is accounted for, results from the IRS acting as a lens that enables resolving denser spatial multiplexings. Provided the signal-to-noise ratio is minimally high, this DOF augmentation then translates to a hefty improvement in spectral efficiency.
引用
收藏
页码：397 / 402
页数：6
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