Hybrid Precoding for 6G Terahertz Communications: Performance Evaluation and Open Problems

被引：16
|
作者：
Yan, Longfei [1 ]
Han, Chong [1 ]
Yuan, Jinhong [2 ]
机构：
[1] Shanghai Jiao Tong Univ, Shanghai 200240, Peoples R China
[2] Univ New South Wales, Sydney, NSW 2052, Australia
来源：
2020 2ND 6G WIRELESS SUMMIT (6G SUMMIT) | 2020年
基金：
中国国家自然科学基金;
关键词：
Terahertz band; 6G; Hybrid precoding; MILLIMETER-WAVE; WIRELESS COMMUNICATIONS;
D O I：
10.1109/6gsummit49458.2020.9083795
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
In this paper, a fully-connected (FC) hybrid pre-coding architecture in the Terahertz (THz) band is investigated for 6G wireless communications. The approximated spectral efficiency of the THz FC hybrid precoding architecture is derived. Inspired by this, a low-complexity column-by-column (CBC) algorithm is proposed for the THz FC hybrid precoding. Simulation results show that, on the one hand, the spectral efficiency of the CBC algorithm approaches the fully digital precoding scheme and outperforms the existing algorithm with a low complexity. On the other hand, the approximated spectral efficiency of the FC hybrid precoding is accurate. Furthermore, some open problems of the Terahertz hybrid precoding are presented.
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页数：5
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