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Paper Abstract and Keywords
Presentation 2023-01-19 12:05
5G radio wave propagation analysis in a city model by large-scale FDTD simulation using the supercomputer "Fugaku"
Yoichi Kochibe, Naoki Ebata, Takashi Yamagajo, Wataru Odajima, Hiroaki Watanabe, Hikaru Inoue (Fujitsu) AP2022-182
Abstract (in Japanese) (See Japanese page) 
(in English) Recently, the utilization of the radio communication technology such as the service start of the fifth-generation mobile communication system (5G) and the development of the radio communication technology between vehicles and road vehicles in ITS (Intelligent Transport Systems) is expanding more and more. At that time, the actual received signal quality varies complicatedly according to peripheral structures, landform, number of other vehicles in the periphery, distance from transmitting vehicles, etc. Therefore, there is a problem in the realization of the stable communication which contributes to the automatic operation system. Until now, it is general to evaluate the communication quality of 5G by the simulation by the ray trace method in addition to the evaluation by the measurement. However, since the ray tracing method is an approximate solution method, there was a limit in the obtained analysis accuracy in the condition with the complicated shape. Then, this time, using a supercomputer Fugaku, an exact radio wave propagation analysis by FDTD method simulation was carried out in a space around an intersection in an urban area as an analysis area and for roadside-to-vehicle communication by 5G (4.7 GHz), to verify its effectiveness.
Keyword (in Japanese) (See Japanese page) 
(in English) 5G / V2X / FDTD method / High Performance Computing / radio wave propagation / transmission loss / delay spread /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 339, AP2022-182, pp. 30-32, Jan. 2023.
Paper # AP2022-182 
Date of Issue 2023-01-12 (AP) 
ISSN Online edition: ISSN 2432-6380
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 AP2022-182

Conference Information
Committee AP WPT  
Conference Date 2023-01-19 - 2023-01-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Hiroshima Institute of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Radio propagation, Wireless transmission technology, Antennas and Propagation 
Paper Information
Registration To AP 
Conference Code 2023-01-AP-WPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) 5G radio wave propagation analysis in a city model by large-scale FDTD simulation using the supercomputer "Fugaku" 
Sub Title (in English)  
Keyword(1) 5G  
Keyword(2) V2X  
Keyword(3) FDTD method  
Keyword(4) High Performance Computing  
Keyword(5) radio wave propagation  
Keyword(6) transmission loss  
Keyword(7) delay spread  
1st Author's Name Yoichi Kochibe  
1st Author's Affiliation Fujitsu Limited (Fujitsu)
2nd Author's Name Naoki Ebata  
2nd Author's Affiliation Fujitsu Limited (Fujitsu)
3rd Author's Name Takashi Yamagajo  
3rd Author's Affiliation Fujitsu Limited (Fujitsu)
4th Author's Name Wataru Odajima  
4th Author's Affiliation Fujitsu Limited (Fujitsu)
5th Author's Name Hiroaki Watanabe  
5th Author's Affiliation Fujitsu Limited (Fujitsu)
6th Author's Name Hikaru Inoue  
6th Author's Affiliation Fujitsu Limited (Fujitsu)
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Speaker Author-1 
Date Time 2023-01-19 12:05:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2022-182 
Volume (vol) vol.122 
Number (no) no.339 
Page pp.30-32 
Date of Issue 2023-01-12 (AP) 

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