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Paper Abstract and Keywords
Presentation 2021-11-10 13:30
[Invited Lecture] A Study on Interference Canceller for HAPS Feeder Links with Multi-Gateways under Multiple-Path Environment
Takafumi Fujii, Yoshichika ohta (Softbank.corp) AP2021-101 RCS2021-148
Abstract (in Japanese) (See Japanese page) 
(in English) HAPS (High Altitude Platform Station), which is a stratosphere platform around 20Km altitude, cellular communication service makes it possible to directly communicate among ordinary land cellular phones. HAPS is also a promising system for service area expansions as well as reliable communication methods at various natural disasters. HAPS communication system is composed of service links which provide communications between HAPS and land cellular phones and a feeder link which establishes a communication between HAPS and a base station (Gateway). The authors proposed a “Multi-Gateway System” that performs spatial multiplexing at the same frequency for effectively use the frequency of the feeder link. It was shown that the communication quality can be greatly improved by applying interference canceller technology to the forward link from ground to HAPS. In this paper, we evaluate this interference canceller under multiple-path environment, and clarify the improvement effect of communication quality.
Keyword (in Japanese) (See Japanese page) 
(in English) High Altitude Platform Station / MIMO / Interference canceller / / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 233, AP2021-101, pp. 3-9, Nov. 2021.
Paper # AP2021-101 
Date of Issue 2021-11-03 (AP, RCS) 
ISSN Online edition: ISSN 2432-6380
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 AP2021-101 RCS2021-148

Conference Information
Committee AP RCS  
Conference Date 2021-11-10 - 2021-11-12 
Place (in Japanese) (See Japanese page) 
Place (in English) NBC-Bekkan (Nagasaki) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Adaptive Antenna, Equalization, Interference Canceler, MIMO, Wireless Communications, etc. 
Paper Information
Registration To AP 
Conference Code 2021-11-AP-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Interference Canceller for HAPS Feeder Links with Multi-Gateways under Multiple-Path Environment 
Sub Title (in English)  
Keyword(1) High Altitude Platform Station  
Keyword(2) MIMO  
Keyword(3) Interference canceller  
1st Author's Name Takafumi Fujii  
1st Author's Affiliation Softbank.corp (Softbank.corp)
2nd Author's Name Yoshichika ohta  
2nd Author's Affiliation Softbank.corp (Softbank.corp)
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Speaker Author-1 
Date Time 2021-11-10 13:30:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2021-101, RCS2021-148 
Volume (vol) vol.121 
Number (no) no.233(AP), no.234(RCS) 
Page pp.3-9(AP), pp.21-27(RCS) 
Date of Issue 2021-11-03 (AP, RCS) 

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