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Paper Abstract and Keywords
Presentation 2021-12-13 13:30
LoRa Radio Propagation Characteristics over Pseudo-sea Path and their Measurement Systems
Yusuke Kakimoto, Shinji Tsuzuki, Masashi Sugimoto (Ehime Univ.), Huan-Bang Li (NICT), Kazuhiko Nagao (National Institute of Technology, Yuge College) WBS2021-46 ITS2021-20 RCC2021-53
Abstract (in Japanese) (See Japanese page) 
(in English) A wireless system using LoRa (Long Range; 920 MHz band; less than 20 mW), which is a kind of LPWA (Low Power Wide Area) wireless technology for IoT, has been developed by the authors for the purpose of collision avoidance between small ships.
In order to estimate the communication area of LoRa radio in the sea, the radio propagation model ITU-R P.1546 will be referred in this study.
In this paper, the radio propagation characteristics over pseudo-maritime were measured by driving a car along the coastline to verify the degree of agreement with the ITU model.
As a result, it was stated that their errors were less than 3 dB in the range of 7≦h2≦12[m], where h2 was the elevation of the car.
The results of a preliminary experiment conducted at a power plant for three months were also described, where a logging system was constructed to be installed on actual small ships to measure the propagation characteristics over the sea for a long period of time.
Keyword (in Japanese) (See Japanese page) 
(in English) LPWA / ITU-R P.1546 / 920MHz band / / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 297, RCC2021-53, pp. 71-75, Dec. 2021.
Paper # RCC2021-53 
Date of Issue 2021-12-06 (WBS, ITS, RCC) 
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 WBS2021-46 ITS2021-20 RCC2021-53

Conference Information
Committee WBS RCC ITS  
Conference Date 2021-12-13 - 2021-12-13 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To RCC 
Conference Code 2021-12-WBS-RCC-ITS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) LoRa Radio Propagation Characteristics over Pseudo-sea Path and their Measurement Systems 
Sub Title (in English)  
Keyword(1) LPWA  
Keyword(2) ITU-R P.1546  
Keyword(3) 920MHz band  
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1st Author's Name Yusuke Kakimoto  
1st Author's Affiliation Ehime University (Ehime Univ.)
2nd Author's Name Shinji Tsuzuki  
2nd Author's Affiliation Ehime University (Ehime Univ.)
3rd Author's Name Masashi Sugimoto  
3rd Author's Affiliation Ehime University (Ehime Univ.)
4th Author's Name Huan-Bang Li  
4th Author's Affiliation National Institute of Information and Communications Technology (NICT)
5th Author's Name Kazuhiko Nagao  
5th Author's Affiliation National Institute of Technology, Yuge College (National Institute of Technology, Yuge College)
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Speaker Author-1 
Date Time 2021-12-13 13:30:00 
Presentation Time 25 minutes 
Registration for RCC 
Paper # WBS2021-46, ITS2021-20, RCC2021-53 
Volume (vol) vol.121 
Number (no) no.295(WBS), no.296(ITS), no.297(RCC) 
Page pp.71-75 
#Pages 5 
Date of Issue 2021-12-06 (WBS, ITS, RCC) 

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