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NC-OFDM Satellite Communication Based on Compressed Spectrum Sensing
With the fast development of giant LEO constellations, the effective spectrum utilization has been regarded as one of the key orientations for satellite communications. This paper focuses on improving the spectrum utilization efficiency of satellite communications by proposing a non-continuous ortho...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9145502/ https://www.ncbi.nlm.nih.gov/pubmed/35632208 http://dx.doi.org/10.3390/s22103800 |
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author | Wang, Yong Niu, Hehao Zhao, Qingsong Wang, Lei Gao, Yue Lin, Zhi |
author_facet | Wang, Yong Niu, Hehao Zhao, Qingsong Wang, Lei Gao, Yue Lin, Zhi |
author_sort | Wang, Yong |
collection | PubMed |
description | With the fast development of giant LEO constellations, the effective spectrum utilization has been regarded as one of the key orientations for satellite communications. This paper focuses on improving the spectrum utilization efficiency of satellite communications by proposing a non-continuous orthogonal frequency division multiplexing (NC-OFDM) method. Based on the models of NC-OFDM system, we first propose a sub-carrier allocation method by using spectrum sensing to efficiently perceive and utilize the spectrum holes in the satellite communication system. Then, a hybrid genetic particle swarm optimization method is adopted to allocate the channel resources effectively. Finally, simulation results verify that the proposed algorithm can significantly improve the spectrum efficiency of satellite communications. |
format | Online Article Text |
id | pubmed-9145502 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-91455022022-05-29 NC-OFDM Satellite Communication Based on Compressed Spectrum Sensing Wang, Yong Niu, Hehao Zhao, Qingsong Wang, Lei Gao, Yue Lin, Zhi Sensors (Basel) Article With the fast development of giant LEO constellations, the effective spectrum utilization has been regarded as one of the key orientations for satellite communications. This paper focuses on improving the spectrum utilization efficiency of satellite communications by proposing a non-continuous orthogonal frequency division multiplexing (NC-OFDM) method. Based on the models of NC-OFDM system, we first propose a sub-carrier allocation method by using spectrum sensing to efficiently perceive and utilize the spectrum holes in the satellite communication system. Then, a hybrid genetic particle swarm optimization method is adopted to allocate the channel resources effectively. Finally, simulation results verify that the proposed algorithm can significantly improve the spectrum efficiency of satellite communications. MDPI 2022-05-17 /pmc/articles/PMC9145502/ /pubmed/35632208 http://dx.doi.org/10.3390/s22103800 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Wang, Yong Niu, Hehao Zhao, Qingsong Wang, Lei Gao, Yue Lin, Zhi NC-OFDM Satellite Communication Based on Compressed Spectrum Sensing |
title | NC-OFDM Satellite Communication Based on Compressed Spectrum Sensing |
title_full | NC-OFDM Satellite Communication Based on Compressed Spectrum Sensing |
title_fullStr | NC-OFDM Satellite Communication Based on Compressed Spectrum Sensing |
title_full_unstemmed | NC-OFDM Satellite Communication Based on Compressed Spectrum Sensing |
title_short | NC-OFDM Satellite Communication Based on Compressed Spectrum Sensing |
title_sort | nc-ofdm satellite communication based on compressed spectrum sensing |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9145502/ https://www.ncbi.nlm.nih.gov/pubmed/35632208 http://dx.doi.org/10.3390/s22103800 |
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