期刊
IEEE AEROSPACE AND ELECTRONIC SYSTEMS MAGAZINE
卷 38, 期 6, 页码 4-13出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/MAES.2023.3243584
关键词
Optical transmitters; Space vehicles; Optical receivers; Optical pumping; Optical fiber communication; Wireless communication; Laser beams; Terahertz communications; Optical wireless communications; Space cross-link communications; Nonterrestrial Networks
This article explores terahertz and optical wireless communication technologies as the two projected high-data-rate cross-link communication technologies, and compares them in terms of device technology capabilities and wireless propagation properties. A performance analysis directly compares the two technologies for space communication in low Earth orbit constellations. More importantly, a roadmap is provided to push both ultrabroadband wireless technologies forward.
With the ultimate vision of ubiquitous egalitarian worldwide coverage, private companies are launching satellite constellations at unprecedented rates. The large projected traffic in orbital cross-link communication will demand more spectrum to suit more users and to satisfy higher data rates. In this article, terahertz and optical wireless communication technologies are explored as the two projected high-data-rate cross-link communication technologies and are compared in terms of device technology capabilities and wireless propagation properties. A performance analysis including a link budget directly compares the two technologies for space communication in low Earth orbit constellations. More importantly, a roadmap is provided paving the way to push both ultrabroadband wireless technologies forward.
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