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Paper Abstract and Keywords
Presentation 2024-07-25 16:10
[Invited Lecture] Reception Level Fluctuation Characteristics of Millimeter and Sub-THz Waves due to Human Body Shadowing in Indoor Environment
Kosuke Ishii, Tetsuro Imai (TDU), Masayuki Miyashita, Toshiki Hozen, Ryo Yamaguchi, Kazuma Tomimoto, Tomonori Ikeda (SoftBank) AP2024-42
Abstract (in Japanese) (See Japanese page) 
(in English) The use of millimeter wave and Sub-THz waves, which have a wide frequency bandwidth, is being considered for 6G to realize high-speed, large-capacity communications. Since these frequency bands have higher propagation loss than conventional mobile communication frequency bands, they are being considered for use in hot spots where there are many people. On the other hand, it has been reported that shielding loss by the human body increases at higher frequencies as well as propagation loss, so level fluctuations due to the human body cannot be ignored. Therefore, in this paper, experiments were conducted in an indoor environment in order to obtain the received level variations in the millimeter wave and Sub-THz wave bands when a person actually walks around. As a result, it was confirmed that as the number of people increases, the shielding ratio of the direct wave increases and the probability of a decrease in the reception level increases. On the other hand, it was found that in some cases, the presence of a person generates reflected and scattered waves, and the reception level increases compared to the case where there are no pedestrians.
Keyword (in Japanese) (See Japanese page) 
(in English) 6G / Human Body Shadowing / Millimeter wave / Sub-THz wave / / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 126, AP2024-42, pp. 112-117, July 2024.
Paper # AP2024-42 
Date of Issue 2024-07-17 (AP) 
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 AP2024-42

Conference Information
Committee AP SANE SAT  
Conference Date 2024-07-24 - 2024-07-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Frontier Research in Applied Sciences Building, Hokkaido University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Remote sensing, Sattelite Communication, Radio propagation, Antennas and Propagation 
Paper Information
Registration To AP 
Conference Code 2024-07-AP-SANE-SAT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Reception Level Fluctuation Characteristics of Millimeter and Sub-THz Waves due to Human Body Shadowing in Indoor Environment 
Sub Title (in English)  
Keyword(1) 6G  
Keyword(2) Human Body Shadowing  
Keyword(3) Millimeter wave  
Keyword(4) Sub-THz wave  
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1st Author's Name Kosuke Ishii  
1st Author's Affiliation Tokyo Denki University (TDU)
2nd Author's Name Tetsuro Imai  
2nd Author's Affiliation Tokyo Denki University (TDU)
3rd Author's Name Masayuki Miyashita  
3rd Author's Affiliation SoftBank Corp. (SoftBank)
4th Author's Name Toshiki Hozen  
4th Author's Affiliation SoftBank Corp. (SoftBank)
5th Author's Name Ryo Yamaguchi  
5th Author's Affiliation SoftBank Corp. (SoftBank)
6th Author's Name Kazuma Tomimoto  
6th Author's Affiliation SoftBank Corp. (SoftBank)
7th Author's Name Tomonori Ikeda  
7th Author's Affiliation SoftBank Corp. (SoftBank)
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Speaker Author-1 
Date Time 2024-07-25 16:10:00 
Presentation Time 20 minutes 
Registration for AP 
Paper # AP2024-42 
Volume (vol) vol.124 
Number (no) no.126 
Page pp.112-117 
#Pages 6 
Date of Issue 2024-07-17 (AP) 

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