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Paper Abstract and Keywords
Presentation 2015-07-31 13:10
A Study of LOS Rate Definition for Sloping Terrain Correction Equation in Urban Path Loss Estimation Formula
Kohei Ohnishi, Jumpei Miki, Shigeru Tomisato, Masaharu Hata (Okayama Univ.) AP2015-56
Abstract (in Japanese) (See Japanese page) 
(in English) As one of the effective path loss estimation method for small sloping area, the elevation angle correction method is proposed and studying to improve the estimation accuracy. Recently, LOS (line of sight) rate in sloping area plays an important role to improve the estimation accuracy. In this paper, therefore, LOS rate without measurement data is studied by using meshed map data. Since the point of interest on parallel road to the main beam direction of base station antenna is relatively in the line of sight area and that of on perpendicular road to the main beam direction is relatively in the non-line of sight area, the ratio of point of interest number on the parallel and perpendicular roads is considered to express the LOS rate in the sloping area. Furthermore, considering the ratio of the average and peak values on parallel and perpendicular roads, a measure corresponding to the LOS rate is introduced for more adequate LOS rate expression. The result shows, the introduced value expresses non-LOS and LOS situations in sloping areas very well.
Keyword (in Japanese) (See Japanese page) 
(in English) Sloping area / Small cell / Mobile path loss / Urban path loss formula / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 164, AP2015-56, pp. 95-100, July 2015.
Paper # AP2015-56 
Date of Issue 2015-07-23 (AP) 
ISSN Print edition: ISSN 0913-5685    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)
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Conference Information
Committee AP  
Conference Date 2015-07-30 - 2015-07-31 
Place (in Japanese) (See Japanese page) 
Place (in English) Wakkanai Sougou Bunka Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Propagation Special, Antenna and Propagation 
Paper Information
Registration To AP 
Conference Code 2015-07-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study of LOS Rate Definition for Sloping Terrain Correction Equation in Urban Path Loss Estimation Formula 
Sub Title (in English)  
Keyword(1) Sloping area  
Keyword(2) Small cell  
Keyword(3) Mobile path loss  
Keyword(4) Urban path loss formula  
1st Author's Name Kohei Ohnishi  
1st Author's Affiliation Okayama University (Okayama Univ.)
2nd Author's Name Jumpei Miki  
2nd Author's Affiliation Okayama University (Okayama Univ.)
3rd Author's Name Shigeru Tomisato  
3rd Author's Affiliation Okayama University (Okayama Univ.)
4th Author's Name Masaharu Hata  
4th Author's Affiliation Okayama University (Okayama Univ.)
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Speaker Author-1 
Date Time 2015-07-31 13:10:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2015-56 
Volume (vol) vol.115 
Number (no) no.164 
Page pp.95-100 
Date of Issue 2015-07-23 (AP) 

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