An experimentally validated fading model for THz wireless systems

Abstract As the wireless world moves towards the sixth generation (6G) era, the demand of supporting bandwidth-hungry applications in ultra-dense deployments becomes more and more imperative. Driven by this requirement, both the research and development communities have turned their attention into t...

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Autores principales:	Evangelos N. Papasotiriou, Alexandros-Apostolos A. Boulogeorgos, Katsuyuki Haneda, Mar Francis de Guzman, Angeliki Alexiou
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/80b1381657e143f6a0814dcacc29d83e
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spelling	oai:doaj.org-article:80b1381657e143f6a0814dcacc29d83e2021-12-02T15:14:37ZAn experimentally validated fading model for THz wireless systems10.1038/s41598-021-98065-x2045-2322https://doaj.org/article/80b1381657e143f6a0814dcacc29d83e2021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-98065-xhttps://doaj.org/toc/2045-2322Abstract As the wireless world moves towards the sixth generation (6G) era, the demand of supporting bandwidth-hungry applications in ultra-dense deployments becomes more and more imperative. Driven by this requirement, both the research and development communities have turned their attention into the terahertz (THz) band, where more than $$20\,{\text {GHz}}$$ 20 GHz of contiguous bandwidth can be exploited. As a result, novel wireless system and network architectures have been reported promising excellence in terms of reliability, massive connectivity, and data-rates. To assess their feasibility and efficiency, it is necessary to develop stochastic channel models that account for the small-scale fading. However, to the best of our knowledge, only initial steps have been so far performed. Motivated by this, this contribution is devoted to take a new look to fading in THz wireless systems, based on three sets of experimental measurements. In more detail, measurements, which have been conducted in a shopping mall, an airport check-in area, and an entrance hall of a university towards different time periods, are used to accurately model the fading distribution. Interestingly, our analysis shows that conventional distributions, such as Rayleigh, Rice, and Nakagami-m, lack fitting accuracy, whereas, the more general, yet tractable, $$\alpha $$ α – $$\mu $$ μ distribution has an almost-excellent fit. In order to quantify their fitting efficiency, we used two well-defined and widely-accepted tests, namely the Kolmogorov–Smirnov and the Kullback–Leibler tests. By accurately modeling the THz wireless channel, this work creates the fundamental tools of developing the theoretical and optimization frameworks for such systems and networks.Evangelos N. PapasotiriouAlexandros-Apostolos A. BoulogeorgosKatsuyuki HanedaMar Francis de GuzmanAngeliki AlexiouNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Evangelos N. Papasotiriou Alexandros-Apostolos A. Boulogeorgos Katsuyuki Haneda Mar Francis de Guzman Angeliki Alexiou An experimentally validated fading model for THz wireless systems
description	Abstract As the wireless world moves towards the sixth generation (6G) era, the demand of supporting bandwidth-hungry applications in ultra-dense deployments becomes more and more imperative. Driven by this requirement, both the research and development communities have turned their attention into the terahertz (THz) band, where more than $$20\,{\text {GHz}}$$ 20 GHz of contiguous bandwidth can be exploited. As a result, novel wireless system and network architectures have been reported promising excellence in terms of reliability, massive connectivity, and data-rates. To assess their feasibility and efficiency, it is necessary to develop stochastic channel models that account for the small-scale fading. However, to the best of our knowledge, only initial steps have been so far performed. Motivated by this, this contribution is devoted to take a new look to fading in THz wireless systems, based on three sets of experimental measurements. In more detail, measurements, which have been conducted in a shopping mall, an airport check-in area, and an entrance hall of a university towards different time periods, are used to accurately model the fading distribution. Interestingly, our analysis shows that conventional distributions, such as Rayleigh, Rice, and Nakagami-m, lack fitting accuracy, whereas, the more general, yet tractable, $$\alpha $$ α – $$\mu $$ μ distribution has an almost-excellent fit. In order to quantify their fitting efficiency, we used two well-defined and widely-accepted tests, namely the Kolmogorov–Smirnov and the Kullback–Leibler tests. By accurately modeling the THz wireless channel, this work creates the fundamental tools of developing the theoretical and optimization frameworks for such systems and networks.
format	article
author	Evangelos N. Papasotiriou Alexandros-Apostolos A. Boulogeorgos Katsuyuki Haneda Mar Francis de Guzman Angeliki Alexiou
author_facet	Evangelos N. Papasotiriou Alexandros-Apostolos A. Boulogeorgos Katsuyuki Haneda Mar Francis de Guzman Angeliki Alexiou
author_sort	Evangelos N. Papasotiriou
title	An experimentally validated fading model for THz wireless systems
title_short	An experimentally validated fading model for THz wireless systems
title_full	An experimentally validated fading model for THz wireless systems
title_fullStr	An experimentally validated fading model for THz wireless systems
title_full_unstemmed	An experimentally validated fading model for THz wireless systems
title_sort	experimentally validated fading model for thz wireless systems
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/80b1381657e143f6a0814dcacc29d83e
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An experimentally validated fading model for THz wireless systems

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