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Paper Abstract and Keywords
Presentation 2009-10-15 11:55
A Study on a Receiving Array Antenna for Eigenvector-Based Security System Using Radio Waves
Shun Kawakami, Kazuki Okane, Tomoaki Ohtsuki (Keio Univ.) RCS2009-113
Abstract (in Japanese) (See Japanese page) 
(in English) We proposed the indoor event detection system with signal subspace spanned by eigenvector for office or home security.The system monitors a whole room or home with only a pair of transmitter and receiver. The receiver uses an antenna array. We get not received signal strength (RSS) that is susceptible to noise but signal subspace spanned by eigenvector that is inherent to its environment. When an event (e.g. a person intrudes into a house) occurs, the propagation environment changes, and thus the signal subspace changes. Monitoring this change,
we detect an event. The change of eigenvector means also whether a person is in motion or remains motionless. We have been using dipole antennas arranged linearly or circularly as the receiver, however,
they are not necessarily arranged regularly to obtain eigenvector.
In this report, we use patch antennas set up on a box as the receiver, and report the experiment results for the detection of intruder, baggage stolen and the effect of the outside the room. In the result, we can detect some events using the smaller receiver composed of array antennas arranged arbitrarily. Moreover, we study the detection performance of the eigenvalue-based security system and show that this system is useful for various applications by using both the eigenvector and the eigenvalue as the application demands.
Keyword (in Japanese) (See Japanese page) 
(in English) event detection / security / array antenna / patch antenna / / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 229, RCS2009-113, pp. 19-24, Oct. 2009.
Paper # RCS2009-113 
Date of Issue 2009-10-08 (RCS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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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 RCS  
Conference Date 2009-10-15 - 2009-10-16 
Place (in Japanese) (See Japanese page) 
Place (in English) ATR 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Signal Processing and Transceiver Technologies on High-speed Wireless Packet Communication, Wireless Communication Systems, etc. 
Paper Information
Registration To RCS 
Conference Code 2009-10-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on a Receiving Array Antenna for Eigenvector-Based Security System Using Radio Waves 
Sub Title (in English)  
Keyword(1) event detection  
Keyword(2) security  
Keyword(3) array antenna  
Keyword(4) patch antenna  
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1st Author's Name Shun Kawakami  
1st Author's Affiliation Keio University (Keio Univ.)
2nd Author's Name Kazuki Okane  
2nd Author's Affiliation Keio University (Keio Univ.)
3rd Author's Name Tomoaki Ohtsuki  
3rd Author's Affiliation Keio University (Keio Univ.)
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Speaker
Date Time 2009-10-15 11:55:00 
Presentation Time 25 
Registration for RCS 
Paper # IEICE-RCS2009-113 
Volume (vol) IEICE-109 
Number (no) no.229 
Page pp.19-24 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2009-10-08 


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