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Abstract

The future sixth-generation (6G) wireless network has advantages of global coverage, high spectrum efficiency, low cost, high safety, and higher intelligent level. The 6G technology can create ubiquitous intelligent mobile networks for human society. Terahertz wireless communication has the characteristics of high data transmission rate, low delay, and anti-interference, which may be widely used in 6G technology. This paper mainly introduces the planning vision, development status, and key 6G technology, and analyzes the terahertz devices, channels, communication systems, and the possible development trend of 6G technology.

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Authors and contacts

Corresponding author:Cao Jun-Cheng,jccao@mail.sim.ac.cn

Funds:Project supported by the National Natural Science Foundation of China (Grant No. 61927813).

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性能	5G	6G
峰值数据速率	20 Gbit/s	1—10 Tbit/s
用户体验数据速率	0.1 Gbit/s	1 Gbit/s
时延	>1 ms	<0.3 ms
移动速度	<500 km/h	1000 km/h
全球覆盖率	大约70%	>99.9%
移动速度	500 km/h	>800 km/h
区域流量密度	0.01 Gbit/(s·m²)	1 Gbit/(s·m²)
网络能源效率	比4G高10—100倍	比5G高10—100倍
频谱效率	比4G高3—5倍	比5G高3—5倍

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Vol. 70, Issue 24 - 2021-12-20

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