Opportunistic spectrum access for UAV communications towards ultra dense networks

The growing popularity of unmanned aerial vehicle (UAV) attracts significant research interests and applications including low-altitude and airborne vehicles. Since there is no declared spectrum allocated to UAV communications, opportunistic transmission has been commonly considered as an important...

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Main Authors: Luo, Shan, Xiao, Yong, Lin, Rongping, Xie, Xiangdong, Bi, Guoan, Zhao, Yuwei, Huang, Jiyan
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2021
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Online Access:https://hdl.handle.net/10356/145922
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1459222021-01-14T06:08:04Z Opportunistic spectrum access for UAV communications towards ultra dense networks Luo, Shan Xiao, Yong Lin, Rongping Xie, Xiangdong Bi, Guoan Zhao, Yuwei Huang, Jiyan School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Unmanned Aerial Vehicles Ultra Dense Networks The growing popularity of unmanned aerial vehicle (UAV) attracts significant research interests and applications including low-altitude and airborne vehicles. Since there is no declared spectrum allocated to UAV communications, opportunistic transmission has been commonly considered as an important way for supporting UAV communications. When sharing the same spectrum with other users such as satellites and mobile base stations, accurate spectrum sensing and allocation are of critical importance for UAV communications to avoid serious interference. As the UAVs can constantly move to different locations with various spectrum environments, the spectrum decision may be invalid only in a short period, leading to require fast spectrum sensing. Furthermore, an UAV needs to predict possible temporal and spatial vacations of the spectrum. In this case, the spectrum prediction has a high dimensional state space which is notoriously difficult to solve. In this paper, some other issues such as how to determine the spectrum processing time and how to detect the primary signals with high priority to avoid interference, are also discussed. Finally, a fast spectrum sensing algorithm is proposed to improve the energy detection performance by optimizing the error estimation and a constant ratio of missed detection. Our proposed algorithm does not require high computational capability and can achieve relatively accurate sensing in low signal-to-noise ratio scenarios. Published version 2021-01-14T06:08:04Z 2021-01-14T06:08:04Z 2019 Journal Article Luo, S., Xiao, Y., Lin, R., Xie, X., Bi, G., Zhao, Y., & Huang, J. (2019). Opportunistic spectrum access for UAV communications towards ultra dense networks. IEEE Access, 7, 175021-175032. doi:10.1109/ACCESS.2019.2956958 2169-3536 0000-0002-1953-3048 0000-0003-3230-8758 0000-0002-5338-9131 0000-0001-5714-7570 0000-0002-9011-9181 0000-0001-6624-0080 0000-0002-2204-4552 https://hdl.handle.net/10356/145922 10.1109/ACCESS.2019.2956958 2-s2.0-85076910469 7 175021 175032 en IEEE Access © 2019 IEEE. This journal is 100% open access, which means that all content is freely available without charge to users or their institutions. All articles accepted after 12 June 2019 are published under a CC BY 4.0 license, and the author retains copyright. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles, or use them for any other lawful purpose, as long as proper attribution is given. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
Unmanned Aerial Vehicles
Ultra Dense Networks
spellingShingle Engineering::Electrical and electronic engineering
Unmanned Aerial Vehicles
Ultra Dense Networks
Luo, Shan
Xiao, Yong
Lin, Rongping
Xie, Xiangdong
Bi, Guoan
Zhao, Yuwei
Huang, Jiyan
Opportunistic spectrum access for UAV communications towards ultra dense networks
description The growing popularity of unmanned aerial vehicle (UAV) attracts significant research interests and applications including low-altitude and airborne vehicles. Since there is no declared spectrum allocated to UAV communications, opportunistic transmission has been commonly considered as an important way for supporting UAV communications. When sharing the same spectrum with other users such as satellites and mobile base stations, accurate spectrum sensing and allocation are of critical importance for UAV communications to avoid serious interference. As the UAVs can constantly move to different locations with various spectrum environments, the spectrum decision may be invalid only in a short period, leading to require fast spectrum sensing. Furthermore, an UAV needs to predict possible temporal and spatial vacations of the spectrum. In this case, the spectrum prediction has a high dimensional state space which is notoriously difficult to solve. In this paper, some other issues such as how to determine the spectrum processing time and how to detect the primary signals with high priority to avoid interference, are also discussed. Finally, a fast spectrum sensing algorithm is proposed to improve the energy detection performance by optimizing the error estimation and a constant ratio of missed detection. Our proposed algorithm does not require high computational capability and can achieve relatively accurate sensing in low signal-to-noise ratio scenarios.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Luo, Shan
Xiao, Yong
Lin, Rongping
Xie, Xiangdong
Bi, Guoan
Zhao, Yuwei
Huang, Jiyan
format Article
author Luo, Shan
Xiao, Yong
Lin, Rongping
Xie, Xiangdong
Bi, Guoan
Zhao, Yuwei
Huang, Jiyan
author_sort Luo, Shan
title Opportunistic spectrum access for UAV communications towards ultra dense networks
title_short Opportunistic spectrum access for UAV communications towards ultra dense networks
title_full Opportunistic spectrum access for UAV communications towards ultra dense networks
title_fullStr Opportunistic spectrum access for UAV communications towards ultra dense networks
title_full_unstemmed Opportunistic spectrum access for UAV communications towards ultra dense networks
title_sort opportunistic spectrum access for uav communications towards ultra dense networks
publishDate 2021
url https://hdl.handle.net/10356/145922
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