University of Oulu

Y. Lyu, P. Kyösti and W. Fan, "Sub-terahertz channel sounder: Review and future challenges," in China Communications, vol. 20, no. 6, pp. 26-48, June 2023, doi: 10.23919/JCC.fa.2021-0450.202306.

Sub-terahertz channel sounder : review and future challenges

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Author: Lyu, Yejian1; Kyösti, Pekka2,3; Fan, Wei1,2
Organizations: 1Department of Electronic Systems, Aalborg University, Aalborg, Denmark
2Center for Wireless Communication-Radio Technology, Oulu University, Oulu, Finland
3Keysight Technologies Finland Oy, Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 2.9 MB)
Persistent link:
Language: English
Published: Institute of Electrical and Electronics Engineers, 2023
Publish Date: 2023-09-11


Due to the large amount of unused and unexplored spectrum resources, the so-called sub-Terahertz (sub-THz) frequency bands from 100 to 300 GHz are seen as promising bands for the next generation of wireless communication systems. Channel modeling at sub-THz bands is essential for the design and deployment of future wireless communication systems. Channel measurement is a widely adopted method to obtain channel characteristics and establish mathematical channel models. Channel measurements depend on the design and construction of channel sounders. Thus, reliable channel sounding techniques and accurate channel measurements are required. In this paper, the requirements of an ideal channel sounder are discussed and the main channel sounding techniques are described for the sub-THz frequency bands. The state-of-the-art sub-THz channel sounders reported in the literature and respective channel measurements are presented. Moreover, a vector network analyzer (VNA) based channel sounder, which supports frequency bands from 220 to 330 GHz is presented and its performance capability and limitation are evaluated. This paper also discussed the challenge and future outlook of the sub-THz channel sounders and measurements.

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Series: China communications
ISSN: 1673-5447
ISSN-L: 1673-5447
Volume: 20
Issue: 6
Pages: 26 - 48
DOI: 10.23919/JCC.fa.2021-0450.202306
Type of Publication: A2 Review article in a scientific journal
Field of Science: 213 Electronic, automation and communications engineering, electronics
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