A Novel 3D Wideband Time-Varying Channel Model for Orbital Angular Momentum Communication Systems

被引：1
作者：
Ji, Wenxie [1 ,2 ]
Wang, Cheng-Xiang [1 ,2 ]
Huang, Jie [1 ,2 ]
Yang, Runruo [1 ,2 ]
机构：
[1] Southeast Univ, Sch Informat Sci & Engn, Natl Mobile Commun Res Lab, Nanjing 210096, Peoples R China
[2] Purple Mt Labs, Nanjing 211111, Peoples R China
来源：
2022 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE (WCNC) | 2022年
基金：
国家重点研发计划; 中国国家自然科学基金; 欧盟地平线“2020”;
关键词：
6G; OAM; GBSM; MIMO; statistical properties; CAPACITY;
D O I：
10.1109/WCNC51071.2022.9771804
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Orbital angular momentum (OAM) is regarded as a key technology of the sixth generation (6G) wireless communication systems. The vortex wave is a typical application of OAM. In this paper, a novel time-varying three-dimensional (3D) geometry-based stochastic model (GBSM) for a multiple-input multiple-output (MIMO) system employing the vortex wave is proposed. This model supports all kinds of OAM antennas that generate the vortex wave and introduces a spiral phase term to represent the helical wavefront of the vortex wave. To better reveal characteristics of the OAM-based MIMO system, some important statistical properties like temporal autocorrelation function (ACF) and spatial cross-correlation function (CCF) are derived and analyzed. Non-negligible impacts on the temporal ACF caused by OAM antennas are revealed. The results illustrate that the OAM-based MIMO system can help decrease spatial CCF, especially in the environment that angular spreads are small. Characteristics analyzed in this paper are important for future OAM communication systems.
引用
收藏
页码：974 / 979
页数：6
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