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Paper Abstract and Keywords
Presentation 2014-12-18 12:30
[Poster Presentation] A study of optical code division multiplexing with dimming control using modified pseudo orthogonal M-sequence sets
Takashi Ozaki, Yusuke Kozawa, Yohtaro Umeda (Tokyo Univ. of Science) WBS2014-42
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, the new dimmig control method that using pseudo orthogonal M-Sequence set is pro- posed. Furthermore, the new Variable Multi-pulse Pulse Position Modulation (VMPPM) system that combines MPPM with proposed dimming control method is proposed. In the VMPPM system, r slots are selected from n slots and sequences for data transmission are generated to each selected r slots according to source data of log2 nCr + r [bit/frame]. VMPPM can also achieve multiplexing by allocating sequences to multi users. Additionally, VMPPM can represent the dimming level of n − r + 1 stages by using the empty n − r slots. Moreover, the error rate performance of VMPPM is evaluated through theoretical analysis by taking into account human eye response. Also, we evaluate error rate performance and the spectral efficiency of VMPPM. Consequently, VMPPM shows high spectral efficiency and flexible dimming performance.
Keyword (in Japanese) (See Japanese page) 
(in English) Visible light communication / LED / PPM / MPPM / dimming control / OCDM / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 368, WBS2014-42, pp. 19-24, Dec. 2014.
Paper # WBS2014-42 
Date of Issue 2014-12-11 (WBS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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 WBS ITS  
Conference Date 2014-12-18 - 2014-12-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Kumamoto University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) ITS Communications, Poster, etc. 
Paper Information
Registration To WBS 
Conference Code 2014-12-WBS-ITS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study of optical code division multiplexing with dimming control using modified pseudo orthogonal M-sequence sets 
Sub Title (in English)  
Keyword(1) Visible light communication  
Keyword(2) LED  
Keyword(3) PPM  
Keyword(4) MPPM  
Keyword(5) dimming control  
Keyword(6) OCDM  
Keyword(7)  
Keyword(8)  
1st Author's Name Takashi Ozaki  
1st Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
2nd Author's Name Yusuke Kozawa  
2nd Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
3rd Author's Name Yohtaro Umeda  
3rd Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
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Speaker Author-1 
Date Time 2014-12-18 12:30:00 
Presentation Time 150 minutes 
Registration for WBS 
Paper # WBS2014-42 
Volume (vol) vol.114 
Number (no) no.368 
Page pp.19-24 
#Pages 6 
Date of Issue 2014-12-11 (WBS) 

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