University of Oulu

J. Kokkoniemi, J. Lehtomäki and M. Juntti, "Simple Molecular Absorption Loss Model for 200–450 Gigahertz Frequency Band," 2019 European Conference on Networks and Communications (EuCNC), Valencia, Spain, 2019, pp. 219-223. doi: 10.1109/EuCNC.2019.8801950

Simple molecular absorption loss model for 200—450 gigahertz frequency band

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Author: Kokkoniemi, Joonas1; Lehtomäki, Janne1; Juntti, Markku1
Organizations: 1Centre for Wireless Communications (CWC), University of Oulu, P.O. Box 4500, 90014 Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.8 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2019
Publish Date: 2019-12-18


This paper derives a simplified polynomial molecular absorption loss model for 200—450 GHz band. This band has a high potential for near future short range, high data rate applications due to large spectral resources and reasonable path loss. The frequencies around 300 GHz are among the first ones where the molecular absorption loss becomes a significant factor. This loss increases exponentially with the distance and is not a major issue at short distances (few meters), but entirely blocks signals over large distances. Modeling of the molecular absorption loss is relatively straightforward, but requires large numbers of parameters from spectroscopic databases. This paper derives a simplified polynomial absorption loss model for the major absorption lines. This extends and gives more accurate absorption loss values in comparison to the existing ITU-R absorption loss models. The simplified polynomial expressions by ITU-R are mostly limited to about 350 GHz frequency, although being rather accurate up to about 400 GHz. This paper gives a simpler and more accurate absorption loss model to those bands. A part of the considered band, 275—450 GHz band, is subject to World Radiocommunication Conference 2019 (WRC-19) for allocation and operational characterization for the future communication applications.

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Series: European Conference on Networks and Communications
ISSN: 2475-6490
ISSN-E: 2575-4912
ISSN-L: 2475-6490
ISBN: 978-1-72810-546-8
ISBN Print: 978-1-7281-0547-5
Pages: 219 - 223
Article number: 8801950
DOI: 10.1109/EuCNC.2019.8801950
Host publication: 28th European Conference on Networks and Communications, EuCNC 2019, 18-21 June 2019 Valencia, Spain
Conference: European Conference on Networks and Communications
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This project (TERRANOVA) was supported by Horizon 2020, European Union’s Framework Programme for Research and Innovation, under grant agreement no. 761794. This work was also supported in part by the Academy of Finland 6Genesis Flagship under grant no. 318927.
EU Grant Number: (761794) TERRANOVA - Terabit/s Wireless Connectivity by TeraHertz innovative technologies to deliver Optical Network Quality of Experience in Systems beyond 5G
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
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