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Paper Abstract and Keywords
Presentation 2026-05-14 15:40
A Study on Communication Area Extension Using a Dielectric Waveguide with Added Partucles
Atsushi Fukuda, Junya Matsudaira, Yasuhiro Kido, Satoshi Suyama (NTT DOCOMO) MW2026-13
Abstract (in Japanese) (See Japanese page) 
(in English) The importance of high-capacity and reliable wireless communications has increased with the advancement of mobile services. High-frequency wireless systems, however, suffer from strong directivity and high susceptibility to blockage, often resulting in coverage holes. To address this issue, wireless architectures employing dielectric waveguides (DWGs), which exhibit low transmission loss in high-frequency bands, have been proposed. A dielectric waveguide can bypass radio obstacles and also act as a radiating structure by attaching dielectric particles at arbitrary positions along the waveguide, enabling flexible area deployment and efficient coverage of coverage holes. Owing to these features, the application of dielectric waveguides to in-vehicle area coverage in high-speed trains, where numerous radio obstacles exist, has been actively investigated. However, due to their rod-like structure, dielectric waveguides require larger cross-sectional dimensions at lower frequencies, making miniaturization challenging for installation inside train cars. In this report, we show that employing a Goubau line enables significant miniaturization while preserving the advantages of this area deployment approach.
Keyword (in Japanese) (See Japanese page) 
(in English) Dielectric waveguide / Communication area extension / High-speed train / Goubau line / / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 24, MW2026-13, pp. 25-28, May 2026.
Paper # MW2026-13 
Date of Issue 2026-05-07 (MW) 
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 MW2026-13

Conference Information
Committee MW  
Conference Date 2026-05-14 - 2026-05-15 
Place (in Japanese) (See Japanese page) 
Place (in English) Sannomiya convention center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Microwave, etc. 
Paper Information
Registration To MW 
Conference Code 2026-05-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Communication Area Extension Using a Dielectric Waveguide with Added Partucles 
Sub Title (in English)  
Keyword(1) Dielectric waveguide  
Keyword(2) Communication area extension  
Keyword(3) High-speed train  
Keyword(4) Goubau line  
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1st Author's Name Atsushi Fukuda  
1st Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
2nd Author's Name Junya Matsudaira  
2nd Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
3rd Author's Name Yasuhiro Kido  
3rd Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
4th Author's Name Satoshi Suyama  
4th Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
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Speaker Author-1 
Date Time 2026-05-14 15:40:00 
Presentation Time 25 minutes 
Registration for MW 
Paper # MW2026-13 
Volume (vol) vol.126 
Number (no) no.24 
Page pp.25-28 
#Pages 4 
Date of Issue 2026-05-07 (MW) 

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