Beamsteering for 5G Mobile Communication Using Programmable Metasurface
Beamsteering for 5G Mobile Communication Using Programmable Metasurface
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DOI：
10.1109/lwc.2021.3073975
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发表时间：
2021-07-01
影响因子：
6.3
通讯作者：
Zwick, Thomas
中科院分区：
文献类型：
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作者：
Li, Yueheng;Bettinga, Sven;Zwick, Thomas
可编程超表面（PM）的使用提供了一种实现灵活且全电子光束控制的有前途的方法。与相控阵相比，PM 由于其作为无线通信系统中具有成本效益的基站的潜力而特别有吸引力，可以有效降低功耗和系统总成本。尽管 PM 一直是一个热门话题，但其实时实现的开发却很少涉及。在这封信中，提出并实现了一种基于 28 GHz PM 波束成形的用户跟踪实验移动通信系统。因此，使用与 3GPP 5G NR 标准相当的波束管理算法。实验表明，该系统可以在0.5度至2.5度的角度失配范围内进行精确跟踪，并通过灵活的波束细化最大限度地减少波束训练开销。实验还表明，所建立的系统可以实现最大角速度为37.5度/秒的移动用户跟踪。
The usage of programmable metasurfaces (PMs) offers a promising way to realize flexible and fully electronic beam steering. Compared to phased arrays, PMs are particularly attractive due to their potential as a cost-effective base station in wireless communication systems, effectively reducing power consumption and total system costs. Although PM has been a hot topic, development of its real-time implementations are rarely touched. In this letter, an experimental mobile communication system with user tracking based on PM beamforming at 28 GHz is proposed and implemented. Thereby, beam management algorithms comparable to the 3GPP 5G NR standards are used. Experiments show that the system performs precise tracking with an angle mismatch from 0.5 degrees to 2.5 degrees, and minimizes the beam training overhead through flexible beam refinement. Experiments also show that the tracking of a mobile user with a maximum angular speed of 37.5 degrees/s can be realized in the established system.