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Paper Abstract and Keywords
Presentation 2009-01-21 15:50
Propagation Analysis of Incident Waves to a Tunnel Using Aperture Field Method and Ray-tracing Method
Tetsuro Imai, Kazumichi Ishikawa (NTT DOCOMO) AP2008-156
Abstract (in Japanese) (See Japanese page) 
(in English) At the present, it is investigated to apply the ray-tracing method to analysis of propagation characteristics in tunnels. By using ray-tracing method, we can analyze the characteristics without restrictions for tunnel shape, and easily consider antenna directivity. Here, when analyzing propagation characteristics of the waves which enter into a tunnel, the diffraction at edge of the tunnel aperture have to be taken into consideration. So, ray-tracing process becomes complicated. In this paper, we propose applying hybrid method of aperture field method and ray-tracing method for easy propagation analysis of incident waves to a tunnel and evaluate performance based on comparison with measurement results.
Keyword (in Japanese) (See Japanese page) 
(in English) Radio propagation analysis / Tunnel / Ray-tracing method / Aperture field method / / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 386, AP2008-156, pp. 37-42, Jan. 2009.
Paper # AP2008-156 
Date of Issue 2009-01-14 (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)
Download PDF AP2008-156

Conference Information
Committee AP  
Conference Date 2009-01-21 - 2009-01-23 
Place (in Japanese) (See Japanese page) 
Place (in English) Fukuoka University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Etc. 
Paper Information
Registration To AP 
Conference Code 2009-01-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Propagation Analysis of Incident Waves to a Tunnel Using Aperture Field Method and Ray-tracing Method 
Sub Title (in English)  
Keyword(1) Radio propagation analysis  
Keyword(2) Tunnel  
Keyword(3) Ray-tracing method  
Keyword(4) Aperture field method  
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1st Author's Name Tetsuro Imai  
1st Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
2nd Author's Name Kazumichi Ishikawa  
2nd Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
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Speaker Author-1 
Date Time 2009-01-21 15:50:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2008-156 
Volume (vol) vol.108 
Number (no) no.386 
Page pp.37-42 
#Pages 6 
Date of Issue 2009-01-14 (AP) 

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