Algorithm for frequency capture and rectification in a low-orbit satellite IoT communication network

In satellite communication systems, due to relative motion between satellites and that between satellites and the ground, the resulting Doppler frequency offset adversely affects communication synchronization. In this research, Doppler frequency offset compensation and phase offset compensation meth...

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Autores principales:	Jie Shen, Hanming Liu, Jing Wang, Xia Jia
Formato:	article
Lenguaje:	EN
Publicado:	AIMS Press 2021
Materias:	fast fourier transformation (fft) inverse fast fourier transform (ifft) doppler shift frequency offset correction (foc) maximum likelihood (ml) estimation Biotechnology TP248.13-248.65 Mathematics QA1-939
Acceso en línea:	https://doaj.org/article/1cfb85024cfe42e1a4b87b663ba2aed2
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id	oai:doaj.org-article:1cfb85024cfe42e1a4b87b663ba2aed2
record_format	dspace
spelling	oai:doaj.org-article:1cfb85024cfe42e1a4b87b663ba2aed22021-11-23T03:02:28ZAlgorithm for frequency capture and rectification in a low-orbit satellite IoT communication network10.3934/mbe.20213971551-0018https://doaj.org/article/1cfb85024cfe42e1a4b87b663ba2aed22021-09-01T00:00:00Zhttps://www.aimspress.com/article/doi/10.3934/mbe.2021397?viewType=HTMLhttps://doaj.org/toc/1551-0018In satellite communication systems, due to relative motion between satellites and that between satellites and the ground, the resulting Doppler frequency offset adversely affects communication synchronization. In this research, Doppler frequency offset compensation and phase offset compensation method eliminate the influence of the Doppler effect on synchronization. The proposed algorithm divides frequency estimate into two steps, coarse and precision. Finally, the corresponding frequency offset and phase offset compensation are performed. The simulation results show that the demodulated output results after frequency offset and phase offset compensation agree well with the original modulation data, indicating that the algorithm is valid and accurate.Jie ShenHanming LiuJing Wang Xia JiaAIMS Pressarticlefast fourier transformation (fft)inverse fast fourier transform (ifft)doppler shiftfrequency offset correction (foc)maximum likelihood (ml) estimationBiotechnologyTP248.13-248.65MathematicsQA1-939ENMathematical Biosciences and Engineering, Vol 18, Iss 6, Pp 7999-8023 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	fast fourier transformation (fft) inverse fast fourier transform (ifft) doppler shift frequency offset correction (foc) maximum likelihood (ml) estimation Biotechnology TP248.13-248.65 Mathematics QA1-939
spellingShingle	fast fourier transformation (fft) inverse fast fourier transform (ifft) doppler shift frequency offset correction (foc) maximum likelihood (ml) estimation Biotechnology TP248.13-248.65 Mathematics QA1-939 Jie Shen Hanming Liu Jing Wang Xia Jia Algorithm for frequency capture and rectification in a low-orbit satellite IoT communication network
description	In satellite communication systems, due to relative motion between satellites and that between satellites and the ground, the resulting Doppler frequency offset adversely affects communication synchronization. In this research, Doppler frequency offset compensation and phase offset compensation method eliminate the influence of the Doppler effect on synchronization. The proposed algorithm divides frequency estimate into two steps, coarse and precision. Finally, the corresponding frequency offset and phase offset compensation are performed. The simulation results show that the demodulated output results after frequency offset and phase offset compensation agree well with the original modulation data, indicating that the algorithm is valid and accurate.
format	article
author	Jie Shen Hanming Liu Jing Wang Xia Jia
author_facet	Jie Shen Hanming Liu Jing Wang Xia Jia
author_sort	Jie Shen
title	Algorithm for frequency capture and rectification in a low-orbit satellite IoT communication network
title_short	Algorithm for frequency capture and rectification in a low-orbit satellite IoT communication network
title_full	Algorithm for frequency capture and rectification in a low-orbit satellite IoT communication network
title_fullStr	Algorithm for frequency capture and rectification in a low-orbit satellite IoT communication network
title_full_unstemmed	Algorithm for frequency capture and rectification in a low-orbit satellite IoT communication network
title_sort	algorithm for frequency capture and rectification in a low-orbit satellite iot communication network
publisher	AIMS Press
publishDate	2021
url	https://doaj.org/article/1cfb85024cfe42e1a4b87b663ba2aed2
work_keys_str_mv	AT jieshen algorithmforfrequencycaptureandrectificationinaloworbitsatelliteiotcommunicationnetwork AT hanmingliu algorithmforfrequencycaptureandrectificationinaloworbitsatelliteiotcommunicationnetwork AT jingwang algorithmforfrequencycaptureandrectificationinaloworbitsatelliteiotcommunicationnetwork AT xiajia algorithmforfrequencycaptureandrectificationinaloworbitsatelliteiotcommunicationnetwork
_version_	1718417305728188416

Algorithm for frequency capture and rectification in a low-orbit satellite IoT communication network

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