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Paper Abstract and Keywords
Presentation 2021-07-30 10:40
Development of stepless attenuator to emulate Mobile Satellite Communications System
Byeongpyo Jeong, Tomoshige Kan, Hajime Susukita, Takashi Takahashi (NICT) SAT2021-26
Abstract (in Japanese) (See Japanese page) 
(in English) NICT has developed and is operating a mobile vehicle earth station for Ka-band which can be installed by simple operation in a case of disaster. Assuming movement immediately after the disaster with the disaster countermeasure organizations such as a fire department emergency relief team, this Ka band mobile vehicle earth station can transmit 24 Mbps data while moving at 100 km/h. In addition, as this satellite communication vehicle earth station is unprecedented in the world, it is technology for which the fire departments and defense bodies concerned have great expectations. In mobile satellite communications, it is easy to be affected by obstacles such as buildings, artificial objects, roadside trees, etc., and therefore, communication interruption occurs, and it is impossible to avoid the adverse effect on satellite communications. In order to improve the efficiency of mobile satellite communications, it is necessary to perform congestions control, for example, in accordance with the moving condition (frequency of appearance of obstacles, width of obstacles, moving speed, etc.). However, in the present state, it is difficult to make the running conditions of the Earth Station in Moving uniform, and there is a problem that the phenomena cannot be reproduced under the same conditions. To improve the efficiency of data communications in mobile satellite communications systems, we have developed a stepless attenuator that can be emulated mobile satellite communications.
Keyword (in Japanese) (See Japanese page) 
(in English) Mobile Satellite Communications / Mobile Vehicle Earth Station for Ka-band / Shadowing Characteristic / Stepless Attenuator / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 128, SAT2021-26, pp. 36-39, July 2021.
Paper # SAT2021-26 
Date of Issue 2021-07-21 (SAT) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF SAT2021-26

Conference Information
Committee AP SANE SAT  
Conference Date 2021-07-28 - 2021-07-30 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Remote sensing, Sattelite Communication, Radio propagation, Antennas and Propagation 
Paper Information
Registration To SAT 
Conference Code 2021-07-AP-SANE-SAT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Development of stepless attenuator to emulate Mobile Satellite Communications System 
Sub Title (in English)  
Keyword(1) Mobile Satellite Communications  
Keyword(2) Mobile Vehicle Earth Station for Ka-band  
Keyword(3) Shadowing Characteristic  
Keyword(4) Stepless Attenuator  
Keyword(5)  
Keyword(6)  
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1st Author's Name Byeongpyo Jeong  
1st Author's Affiliation National Institute of Information and Communications Technology (NICT)
2nd Author's Name Tomoshige Kan  
2nd Author's Affiliation National Institute of Information and Communications Technology (NICT)
3rd Author's Name Hajime Susukita  
3rd Author's Affiliation National Institute of Information and Communications Technology (NICT)
4th Author's Name Takashi Takahashi  
4th Author's Affiliation National Institute of Information and Communications Technology (NICT)
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Speaker Author-1 
Date Time 2021-07-30 10:40:00 
Presentation Time 25 minutes 
Registration for SAT 
Paper # SAT2021-26 
Volume (vol) vol.121 
Number (no) no.128 
Page pp.36-39 
#Pages 4 
Date of Issue 2021-07-21 (SAT) 

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