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Paper Abstract and Keywords
Presentation 2026-04-23 13:30
[Invited Lecture] Millimeter-Wave Backhaul Communications for High-Mobility Scenarios Using Distributed MIMO Technology
Kazushi Muraoka, Daichi Shirase, Toshiki Takeuchi, Yasushi Maruta (NEC) RCS2026-5
Abstract (in Japanese) (See Japanese page) 
(in English) This report investigates millimeter-wave backhaul communications for high-mobility platforms such as trains and automobiles, where high-capacity communication is required to accommodate traffic generated by a large number of users. Because these platforms typically follow linear travel paths that allow line-of-sight propagation, the use of broadband millimeter-wave bands is considered highly suitable for such applications. In this report, we examine millimeter-wave backhaul communications for high-mobility scenarios using distributed multiple-input multiple-output (D-MIMO) technology, in which multiple antennas are deployed along the travel route. In particular, we address the challenge that frequent antenna switching caused by high mobility induces abrupt changes in Doppler shift and propagation delay before and after each switching event, and we introduce a proposed Doppler and delay pre-compensation scheme applied at the base station transmitter to mitigate these effects. The effectiveness of this scheme is evaluated through simulations, and experimental results obtained using a vehicle traveling at a speed of 100 km/h are also presented.
Keyword (in Japanese) (See Japanese page) 
(in English) Distributed MIMO / Millimeter wave / High-mobility / Doppler and delay pre-compensation / / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 7, RCS2026-5, pp. 25-25, April 2026.
Paper # RCS2026-5 
Date of Issue 2026-04-16 (RCS) 
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 RCS2026-5

Conference Information
Committee RCS  
Conference Date 2026-04-23 - 2026-04-24 
Place (in Japanese) (See Japanese page) 
Place (in English) Yonago 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Radio Access Technologies, Wireless Communications, etc. 
Paper Information
Registration To RCS 
Conference Code 2026-04-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Millimeter-Wave Backhaul Communications for High-Mobility Scenarios Using Distributed MIMO Technology 
Sub Title (in English)  
Keyword(1) Distributed MIMO  
Keyword(2) Millimeter wave  
Keyword(3) High-mobility  
Keyword(4) Doppler and delay pre-compensation  
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1st Author's Name Kazushi Muraoka  
1st Author's Affiliation NEC Corporation (NEC)
2nd Author's Name Daichi Shirase  
2nd Author's Affiliation NEC Corporation (NEC)
3rd Author's Name Toshiki Takeuchi  
3rd Author's Affiliation NEC Corporation (NEC)
4th Author's Name Yasushi Maruta  
4th Author's Affiliation NEC Corporation (NEC)
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Speaker Author-1 
Date Time 2026-04-23 13:30:00 
Presentation Time 30 minutes 
Registration for RCS 
Paper # RCS2026-5 
Volume (vol) vol.126 
Number (no) no.7 
Page p.25 
#Pages 1 
Date of Issue 2026-04-16 (RCS) 

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