Information: Join today and make your research activities more affordable! Technical workshop participation fees and annual registration fees are available at member rates.
Notice: [Important] Announcement of Changes to Registration Fee Payment and Manuscript Upload Procedures for IEICE Technical Meetings
IEICE Technical Committee Submission System
Conference Paper's Information		 Online Proceedings
[Sign in]
Tech. Rep. Archives
 Go Top Page Go Previous   [Japanese] / [English] 

Paper Abstract and Keywords
Presentation 2026-06-17 11:25
A Study on Fully Digital Beamspace MIMO for the FR3 Band
Arata Itamoto, Toshihiko Nishimura, Yasutaka Ogawa, Katsuya Suto (Hokkaido Univ.), Yuta Hayashi, Satoshi Suyama (NTT DOCOMO) RCS2026-34
Abstract (in Japanese) (See Japanese page) 
(in English) The sixth-generation mobile communication system (6G) is expected to realize ultra-high-speed and high-capacity communications exceeding 100 Gbps, and the utilization of the FR3 (Frequency Range 3) band has attracted significant attention. The FR3 band provides a wider bandwidth than the Sub-6 GHz band while exhibiting lower propagation loss than millimeter-wave and sub-terahertz bands. However, since the available bandwidth in the FR3 band is narrower than that in millimeter-wave and sub-terahertz bands, spatial multiplexing using MIMO is essential for achieving high-capacity communications. In this paper, a fully digital beamspace MIMO system for the FR3 band is investigated. The fully digital MIMO system equipped with a planar antenna array consisting of a large number of antenna elements is employed at the base station, and a MIMO transmission scheme based on beamspace transformation using two-dimensional discrete Fourier transform (DFT) is introduced. Furthermore, transmission characteristics in the 7.5 GHz band are evaluated using the 3GPP channel model. The results confirm that high channel capacity and spatial multiplexing with the maximum number of transmission layers can be achieved in line-of-sight (LOS) environments. In contrast, channel capacity is significantly degraded in non-line-of-sight (NLOS) environments due to increased propagation loss. In addition, the appropriate number of DFT beams is investigated from the viewpoint of balancing performance improvement and computational complexity.
Keyword (in Japanese) (See Japanese page) 
(in English) FR3 Band / Fully Digital MIMO / Beamspace MIMO / Two-Dimensional DFT / 3GPP Channel Model / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 72, RCS2026-34, pp. 53-58, June 2026.
Paper # RCS2026-34 
Date of Issue 2026-06-10 (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 RCS2026-34

Conference Information
Committee RCS  
Conference Date 2026-06-17 - 2026-06-19 
Place (in Japanese) (See Japanese page) 
Place (in English) The Ohama Nobumoto Memorial Hall 
Topics (in Japanese) (See Japanese page) 
Topics (in English) First Presentation in IEICE Technical Committee, Resource Control, Scheduling, Wireless Communications, etc. 
Paper Information
Registration To RCS 
Conference Code 2026-06-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Fully Digital Beamspace MIMO for the FR3 Band 
Sub Title (in English) * 
Keyword(1) FR3 Band  
Keyword(2) Fully Digital MIMO  
Keyword(3) Beamspace MIMO  
Keyword(4) Two-Dimensional DFT  
Keyword(5) 3GPP Channel Model  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Arata Itamoto  
1st Author's Affiliation Hokkado University (Hokkaido Univ.)
2nd Author's Name Toshihiko Nishimura  
2nd Author's Affiliation Hokkado University (Hokkaido Univ.)
3rd Author's Name Yasutaka Ogawa  
3rd Author's Affiliation Hokkado University (Hokkaido Univ.)
4th Author's Name Katsuya Suto  
4th Author's Affiliation Hokkado University (Hokkaido Univ.)
5th Author's Name Yuta Hayashi  
5th Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
6th Author's Name Satoshi Suyama  
6th Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
7th Author's Name  
7th Author's Affiliation ()
8th Author's Name  
8th Author's Affiliation ()
9th Author's Name  
9th Author's Affiliation ()
10th Author's Name  
10th Author's Affiliation ()
11th Author's Name  
11th Author's Affiliation ()
12th Author's Name  
12th Author's Affiliation ()
13th Author's Name  
13th Author's Affiliation ()
14th Author's Name  
14th Author's Affiliation ()
15th Author's Name  
15th Author's Affiliation ()
16th Author's Name  
16th Author's Affiliation ()
17th Author's Name  
17th Author's Affiliation ()
18th Author's Name  
18th Author's Affiliation ()
19th Author's Name  
19th Author's Affiliation ()
20th Author's Name  
20th Author's Affiliation ()
21st Author's Name  
21st Author's Affiliation ()
22nd Author's Name  
22nd Author's Affiliation ()
23rd Author's Name  
23rd Author's Affiliation ()
24th Author's Name  
24th Author's Affiliation ()
25th Author's Name  
25th Author's Affiliation ()
26th Author's Name / /
26th Author's Affiliation ()
()
27th Author's Name / /
27th Author's Affiliation ()
()
28th Author's Name / /
28th Author's Affiliation ()
()
29th Author's Name / /
29th Author's Affiliation ()
()
30th Author's Name / /
30th Author's Affiliation ()
()
31st Author's Name / /
31st Author's Affiliation ()
()
32nd Author's Name / /
32nd Author's Affiliation ()
()
33rd Author's Name / /
33rd Author's Affiliation ()
()
34th Author's Name / /
34th Author's Affiliation ()
()
35th Author's Name / /
35th Author's Affiliation ()
()
36th Author's Name / /
36th Author's Affiliation ()
()
Speaker Author-1 
Date Time 2026-06-17 11:25:00 
Presentation Time 10 minutes 
Registration for RCS 
Paper # RCS2026-34 
Volume (vol) vol.126 
Number (no) no.72 
Page pp.53-58 
#Pages 6 
Date of Issue 2026-06-10 (RCS) 

[Return to Top Page]

[Return to IEICE Web Page]
The Institute of Electronics, Information and Communication Engineers (IEICE), Japan