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Paper Abstract and Keywords
Presentation 2009-03-02 16:00
Examination of Ishijima Method for Fading Phenomenon in HF Passing Through Ionosphere
Yoshinori Satake, Takeshi Hashimoto (Univ. of Electro-Comm.) CAS2008-116 SIP2008-179 CS2008-90
Abstract (in Japanese) (See Japanese page) 
(in English) Because of the behavior that High-Frequency (HF) wave entering ionosphere will be reflected and return to the ground, HF line has been used for long range communication for a long time. However, its application to digital communication has been impeded by fading attributable to several factors. Ishijima et al. suggested a method for reducing the fading by the use of a circularly-polarized wave. Although its effects have been reported drastic, but his interpretation of reason for improvement the difficulty in understanding the deflection behavior in the ionosphere hasn’t allowed a reasonable explanation why it works. In this paper, considering multipath fading as the major cause of HF fading, we show that the polarization angle of the outgoing wave significantly affects multipath fading and hence that circularly-polarized wave can avoid HF fading.
Keyword (in Japanese) (See Japanese page) 
(in English) HF / Ionosphere / Circularly-Polarized Wave / Multiple Access Interference Fading / Ishijima Method / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 455, CS2008-90, pp. 89-94, March 2009.
Paper # CS2008-90 
Date of Issue 2009-02-23 (CAS, SIP, CS) 
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 CAS2008-116 SIP2008-179 CS2008-90

Conference Information
Committee CAS CS SIP  
Conference Date 2009-03-02 - 2009-03-03 
Place (in Japanese) (See Japanese page) 
Place (in English) Nagaragawa Convention Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Network processors, signal processing for communications, wireless LAN/PAN, etc. 
Paper Information
Registration To CS 
Conference Code 2009-03-CAS-CS-SIP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Examination of Ishijima Method for Fading Phenomenon in HF Passing Through Ionosphere 
Sub Title (in English)  
Keyword(1) HF  
Keyword(2) Ionosphere  
Keyword(3) Circularly-Polarized Wave  
Keyword(4) Multiple Access Interference Fading  
Keyword(5) Ishijima Method  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Yoshinori Satake  
1st Author's Affiliation The University of Electro-Communications (Univ. of Electro-Comm.)
2nd Author's Name Takeshi Hashimoto  
2nd Author's Affiliation The University of Electro-Communications (Univ. of Electro-Comm.)
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Speaker Author-1 
Date Time 2009-03-02 16:00:00 
Presentation Time 20 minutes 
Registration for CS 
Paper # CAS2008-116, SIP2008-179, CS2008-90 
Volume (vol) vol.108 
Number (no) no.453(CAS), no.454(SIP), no.455(CS) 
Page pp.89-94 
#Pages 6 
Date of Issue 2009-02-23 (CAS, SIP, CS) 

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