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Paper Abstract and Keywords
Presentation 2023-10-19 10:00
[Poster Presentation] An Estimation Formula Line-of-Sight Probability in an Urban Environment
Shinsei Fujimura, Hisato Iwai, Shinsuke Ibi (Doshisha Univ.) AP2023-88
Abstract (in Japanese) (See Japanese page) 
(in English) This paper presents the results of a study on a line-of-sight (LOS) probability estimation formulas for low base station height systems in urban environments. As an initial study, we propose an estimation formula (d1 adaptive model) that can be adapted to changes in street width and building length in an uniform grid pattern city. We have developed the basic formula of the d1 adaptive model based on the concept of the d1d2 model developed in the 5G standardization. Comparison of the LOS probability based on this basic formula with the simulation results shows a discrepancy in the short and medium distances range between base stations and mobile stations. The cause of the discrepancy is considered to be the effect of the base station location in the road width direction and the effect of the LOS spread in the intersection area. Therefore, we analytically obtained the LOS probability at the base station location in the road width direction and modified the model by adding an additional term to represent the LOS spread in the intersection area using an empirical formula. These modifications improve the estimation accuracy of the d1 adaptive model and enable estimation of LOS probability that can adapt to changes in the urban environment.
Keyword (in Japanese) (See Japanese page) 
(in English) LOS probability / Uniform grid pattern city / Distance characteristics / / / / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 223, AP2023-88, pp. 7-8, Oct. 2023.
Paper # AP2023-88 
Date of Issue 2023-10-12 (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 AP2023-88

Conference Information
Committee AP  
Conference Date 2023-10-19 - 2023-10-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Iwate University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Student Session, Antennas and Propagation 
Paper Information
Registration To AP 
Conference Code 2023-10-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) An Estimation Formula Line-of-Sight Probability in an Urban Environment 
Sub Title (in English)  
Keyword(1) LOS probability  
Keyword(2) Uniform grid pattern city  
Keyword(3) Distance characteristics  
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1st Author's Name Shinsei Fujimura  
1st Author's Affiliation Doshisha University (Doshisha Univ.)
2nd Author's Name Hisato Iwai  
2nd Author's Affiliation Doshisha University (Doshisha Univ.)
3rd Author's Name Shinsuke Ibi  
3rd Author's Affiliation Doshisha University (Doshisha Univ.)
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Speaker Author-1 
Date Time 2023-10-19 10:00:00 
Presentation Time 120 minutes 
Registration for AP 
Paper # AP2023-88 
Volume (vol) vol.123 
Number (no) no.223 
Page pp.7-8 
#Pages 2 
Date of Issue 2023-10-12 (AP) 

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