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Paper Abstract and Keywords
Presentation 2026-03-05 09:30
Throughput Evaluation of MU-MIMO in Urban and Suburban Environments with FR3 Hybrid Beamforming
Shunsuke Kamiwatari, Shuto Fukue, Ryochi Kataoka, Tatsuya Nagao, Issei Kanno, Takahiro Hayashi (KDDI Research) RCS2025-274 SR2025-97 SRW2025-71
Abstract (in Japanese) (See Japanese page) 
(in English) Towards the sixth generation (6G), the utilization of frequencies around 7–24 GHz, known as Frequency Range 3 (FR3), is attracting attention. In FR3, beamforming (BF) using a large number of antenna elements is expected to achieve both wide coverage and high-capacity communication. The authors have previously evaluated the single-user MIMO (SU-MIMO) performance of FR3 using hybrid BF in urban environments and demonstrated the potential to achieve high SINR by reducing inter-cell interference while securing coverage equivalent to FR1, primarily in Line of Sight (LoS) environments. In this paper, to more precisely evaluate the system capacity of FR3 assuming actual operation, we conduct a performance evaluation applying multi-user MIMO (MU-MIMO). Furthermore, we extend the scope of evaluation to different terrain environments, urban and suburban areas, to assess the area quality of FR3 in each environment. Moreover, we report results clarifying the factors regarding the differences in frequency characteristics between FR1 and FR3 in LoS and Non-Line of Sight (NLoS) environments, the spatial multiplexing effect of FR3 when applying MU-MIMO, and the characteristics of FR3 in urban and suburban environments.
Keyword (in Japanese) (See Japanese page) 
(in English) hybrid beamforming / sixth generation / 6G / FR3 / upper-mid band / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 387, RCS2025-274, pp. 91-96, March 2026.
Paper # RCS2025-274 
Date of Issue 2026-02-25 (RCS, SR, SRW) 
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 RCS2025-274 SR2025-97 SRW2025-71

Conference Information
Committee RCS SR SRW  
Conference Date 2026-03-04 - 2026-03-06 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokyo University of Science 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Communication Workshop 
Paper Information
Registration To RCS 
Conference Code 2026-03-RCS-SR-SRW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Throughput Evaluation of MU-MIMO in Urban and Suburban Environments with FR3 Hybrid Beamforming 
Sub Title (in English)  
Keyword(1) hybrid beamforming  
Keyword(2) sixth generation  
Keyword(3) 6G  
Keyword(4) FR3  
Keyword(5) upper-mid band  
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1st Author's Name Shunsuke Kamiwatari  
1st Author's Affiliation KDDI Research, Inc. (KDDI Research)
2nd Author's Name Shuto Fukue  
2nd Author's Affiliation KDDI Research, Inc. (KDDI Research)
3rd Author's Name Ryochi Kataoka  
3rd Author's Affiliation KDDI Research, Inc. (KDDI Research)
4th Author's Name Tatsuya Nagao  
4th Author's Affiliation KDDI Research, Inc. (KDDI Research)
5th Author's Name Issei Kanno  
5th Author's Affiliation KDDI Research, Inc. (KDDI Research)
6th Author's Name Takahiro Hayashi  
6th Author's Affiliation KDDI Research, Inc. (KDDI Research)
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Speaker Author-1 
Date Time 2026-03-05 09:30:00 
Presentation Time 30 minutes 
Registration for RCS 
Paper # RCS2025-274, SR2025-97, SRW2025-71 
Volume (vol) vol.125 
Number (no) no.387(RCS), no.388(SR), no.389(SRW) 
Page pp.91-96(RCS), pp.42-47(SR), pp.27-32(SRW) 
#Pages 6 
Date of Issue 2026-02-25 (RCS, SR, SRW) 

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