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Paper Abstract and Keywords
Presentation 2025-10-29 13:30
[Technology Exhibit] Subterahertz band development approach utilizing ultra-high resolution channle sounder
Nobuaki Kuno, Koshiro Kitao, Takahiro Tomie, Satoshi Suyama (NTT DOCOMO), Minoru Inomata, Wataru Yamada, Ryotaro Taniguchi (NTT), Michael Millhaem, Tetsuaki Ikoma, Balaji Raghothaman (Keysight) SR2025-54
Abstract (in Japanese) (See Japanese page) 
(in English) In this report, we introduce a high-resolution SISO channel sounder for understanding time characteristics such as delay time and spatial characteristics such as direction of arrival, which are indispensable for system design in the sub-terahertz band, which is expected to be utilized in the 6th generation mobile communication system (6G). By using wideband OFDM signals of 12 GHz width in the 158 GHz band and 20 GHz width in the 300 GHz band, the path separation of about 2.5 cm and about 1.5 cm was achieved. We measured the delay profiles in the DOCOMO office environment. Then, we compared the measured results and the calculated results of delay spread, and confirmed the effects of reflection by objects such as metal shelves.
Keyword (in Japanese) (See Japanese page) 
(in English) 6G mobile communication systems / sub-terahertz wave bands / channel sounder / propagation channel characteristic measurement / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 218, SR2025-54, pp. 78-83, Oct. 2025.
Paper # SR2025-54 
Date of Issue 2025-10-21 (SR) 
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 SR2025-54

Conference Information
Committee SR  
Conference Date 2025-10-28 - 2025-10-30 
Place (in Japanese) (See Japanese page) 
Place (in English) Kumamoto Kozo Keikaku Engineering Inc. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Software-defined radio, cognitive radio, spectrum sharing, general topics, technical exhibition 
Paper Information
Registration To SR 
Conference Code 2025-10-SR 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Subterahertz band development approach utilizing ultra-high resolution channle sounder 
Sub Title (in English)  
Keyword(1) 6G mobile communication systems  
Keyword(2) sub-terahertz wave bands  
Keyword(3) channel sounder  
Keyword(4) propagation channel characteristic measurement  
Keyword(5)  
Keyword(6)  
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1st Author's Name Nobuaki Kuno  
1st Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
2nd Author's Name Koshiro Kitao  
2nd Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
3rd Author's Name Takahiro Tomie  
3rd Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
4th Author's Name Satoshi Suyama  
4th Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
5th Author's Name Minoru Inomata  
5th Author's Affiliation NTT, Inc. (NTT)
6th Author's Name Wataru Yamada  
6th Author's Affiliation NTT, Inc. (NTT)
7th Author's Name Ryotaro Taniguchi  
7th Author's Affiliation NTT, Inc. (NTT)
8th Author's Name Michael Millhaem  
8th Author's Affiliation Keysight Technologies, Inc. (Keysight)
9th Author's Name Tetsuaki Ikoma  
9th Author's Affiliation Keysight Technologies, Inc. (Keysight)
10th Author's Name Balaji Raghothaman  
10th Author's Affiliation Keysight Technologies, Inc. (Keysight)
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Speaker Author-1 
Date Time 2025-10-29 13:30:00 
Presentation Time 120 minutes 
Registration for SR 
Paper # SR2025-54 
Volume (vol) vol.125 
Number (no) no.218 
Page pp.78-83 
#Pages 6 
Date of Issue 2025-10-21 (SR) 

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