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Paper Abstract and Keywords
Presentation 2007-12-13 13:00
Determination Scheme of Oval Approximation Size of Effective Building Area for Ray-tracing Calculation[2] -- Indicator of the Length of the Major Axis of an Ellipse --
Siomi Takamine, Masahiko Kawamura, Yukiko Kishiki, Asuka Kajiwara (KKE), Yoshio Karasawa (AWCC) AP2007-115
Abstract (in Japanese) (See Japanese page) 
(in English) In this research, in order to reduce computational time for ray-tracing calculation, we propose an approximation method. The method is to restrict the calculation area into an elliptical area which keeps required prediction accuracy in received signal level. The major axis length of the ellipsoid is determined as a function of the distance between Tx and Rx sites, and Tx antenna height, as well as allowable error range. We also propose a prediction formula for determining appropriate length of the major axis of the ellipsoid. Drastic reduction of computational time for ray-tracing with proposed scheme is demonstrated.
Keyword (in Japanese) (See Japanese page) 
(in English) Ray-tracing Method / Computational Time Reduction / Propagation Loss / / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 377, AP2007-115, pp. 1-6, Dec. 2007.
Paper # AP2007-115 
Date of Issue 2007-12-06 (AP) 
ISSN Print edition: ISSN 0913-5685    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)
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Conference Information
Committee AP  
Conference Date 2007-12-13 - 2007-12-13 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) etc. 
Paper Information
Registration To AP 
Conference Code 2007-12-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Determination Scheme of Oval Approximation Size of Effective Building Area for Ray-tracing Calculation[2] 
Sub Title (in English) Indicator of the Length of the Major Axis of an Ellipse 
Keyword(1) Ray-tracing Method  
Keyword(2) Computational Time Reduction  
Keyword(3) Propagation Loss  
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1st Author's Name Siomi Takamine  
1st Author's Affiliation Kozo Keikaku Engineering, Inc. (KKE)
2nd Author's Name Masahiko Kawamura  
2nd Author's Affiliation Kozo Keikaku Engineering, Inc. (KKE)
3rd Author's Name Yukiko Kishiki  
3rd Author's Affiliation Kozo Keikaku Engineering, Inc. (KKE)
4th Author's Name Asuka Kajiwara  
4th Author's Affiliation Kozo Keikaku Engineering, Inc. (KKE)
5th Author's Name Yoshio Karasawa  
5th Author's Affiliation The University of Electro-Communications (AWCC)
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Speaker Author-1 
Date Time 2007-12-13 13:00:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2007-115 
Volume (vol) vol.107 
Number (no) no.377 
Page pp.1-6 
#Pages 6 
Date of Issue 2007-12-06 (AP) 

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