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A Perspective on Terahertz Next-Generation Wireless Communications

School of Electrical & Computer Engineering, Oklahoma State University, 202 Engineering South, Stillwater, OK 74078, USA
Author to whom correspondence should be addressed.
Technologies 2019, 7(2), 43;
Received: 25 March 2019 / Revised: 31 May 2019 / Accepted: 6 June 2019 / Published: 12 June 2019
(This article belongs to the Special Issue Terahertz Technologies)
PDF [547 KB, uploaded 12 June 2019]


In the past year, fifth-generation (5G) wireless technology has seen dramatic growth, spurred on by the continuing demand for faster data communications with lower latency. At the same time, many researchers argue that 5G will be inadequate in a short time, given the explosive growth of machine connectivity, such as the Internet-of-Things (IoT). This has prompted many to question what comes after 5G. The obvious answer is sixth-generation (6G), however, the substance of 6G is still very much undefined, leaving much to the imagination in terms of real-world implementation. What is clear, however, is that the next generation will likely involve the use of terahertz frequency (0.1–10 THz) electromagnetic waves. Here, we review recent research in terahertz wireless communications and technology, focusing on three broad topic classes: the terahertz channel, terahertz devices, and space-based terahertz system considerations. In all of these, we describe the nature of the research, the specific challenges involved, and current research findings. We conclude by providing a brief perspective on the path forward. View Full-Text
Keywords: terahertz; wireless; communication; 6G; electronics; channel; devices; radiation; technology terahertz; wireless; communication; 6G; electronics; channel; devices; radiation; technology

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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O’Hara, J.F.; Ekin, S.; Choi, W.; Song, I. A Perspective on Terahertz Next-Generation Wireless Communications. Technologies 2019, 7, 43.

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