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Paper Abstract and Keywords
Presentation 2026-02-20 10:50
Optimization of Beam Number and Beam Radius for Maximizing Throughput in a HAPS Multi-Beam Communication System for Disaster-Area Scenarios
Ibuki Shimabukuro, Katsuya Nakahira (NIT, Okinawa College) SAT2025-75
Abstract (in Japanese) (See Japanese page) 
(in English) This paper investigates a HAPS multi-beam communication system for disaster scenarios, focusing on land-area coverage. Numerical simulations evaluate the effects of beam radius and beam spacing using effective system throughput, connectivity ratio, and low-quality ratio. Results show that small beam radii of 1–2 km improve antenna gain and spatial frequency reuse, achieving high throughput with good communication quality. For wider beams of 5–6 km, sparse spacing effectively reduces interference and improves quality. These results highlight the importance of flexible beam design according to traffic demand.
Keyword (in Japanese) (See Japanese page) 
(in English) HAPS / Multi-beam Communication / Throughput / / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 359, SAT2025-75, pp. 72-77, Feb. 2026.
Paper # SAT2025-75 
Date of Issue 2026-02-12 (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 SAT2025-75

Conference Information
Committee SAT SANE  
Conference Date 2026-02-19 - 2026-02-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Eef-Jouhou-Plaza 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Satellite Application and General Issues 
Paper Information
Registration To SAT 
Conference Code 2026-02-SAT-SANE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Optimization of Beam Number and Beam Radius for Maximizing Throughput in a HAPS Multi-Beam Communication System for Disaster-Area Scenarios 
Sub Title (in English)  
Keyword(1) HAPS  
Keyword(2) Multi-beam Communication  
Keyword(3) Throughput  
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1st Author's Name Ibuki Shimabukuro  
1st Author's Affiliation National Institute of Technology, Okinawa College (NIT, Okinawa College)
2nd Author's Name Katsuya Nakahira  
2nd Author's Affiliation National Institute of Technology, Okinawa College (NIT, Okinawa College)
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Speaker Author-1 
Date Time 2026-02-20 10:50:00 
Presentation Time 20 minutes 
Registration for SAT 
Paper # SAT2025-75 
Volume (vol) vol.125 
Number (no) no.359 
Page pp.72-77 
#Pages 6 
Date of Issue 2026-02-12 (SAT) 

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