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Paper Abstract and Keywords
Presentation 2015-12-17 13:30
[Poster Presentation] A study of convolutional coded OOK system using multi-color LED for high-speed underwater visible light communications
Takuya Mori, Yusuke Kozawa, Yotaro Umeda (Tokyo Univ. of science), Hiromasa Habuchi (Ibaraki Univ.) WBS2015-63 ITS2015-35 RCC2015-65
Abstract (in Japanese) (See Japanese page) 
(in English) In this study, we consider a high-speed underwater visible light communications that use convolutional coded on-off keying systems. Moreover, we also present the convolutional coded on-off keying systems with multi-color LEDs for improving error-performance under different conditions of water type. In this system, when the code ratio of convolutional code is 1/R, we use Nc(= 1, 2, ... , R) colors for transmitting R signals. We simulate and evaluate the bit-error-rate (BER) performance of this proposed system taking into account an LED modulation bandwidth, and water condition defined by chlorophyll density. As a results, the BER performances of the proposed system are better than those of uncoded OOK systems, and convolutional coded OOK system with single-color LED. In particular when data rate is 50 Mbps, Eb/N0 required with BER is 10^{-5} can be improved with 3dB compared with the uncoded OOK systems.
Keyword (in Japanese) (See Japanese page) 
(in English) Underwater Visible Light Communication / LED / Convolutional code / / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 364, WBS2015-63, pp. 139-144, Dec. 2015.
Paper # WBS2015-63 
Date of Issue 2015-12-10 (WBS, ITS, RCC) 
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)
Download PDF WBS2015-63 ITS2015-35 RCC2015-65

Conference Information
Committee RCC ITS WBS  
Conference Date 2015-12-17 - 2015-12-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa Industry Support Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) ITS Communications, Reliable Communication, etc. Poster Session. 
Paper Information
Registration To WBS 
Conference Code 2015-12-RCC-ITS-WBS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study of convolutional coded OOK system using multi-color LED for high-speed underwater visible light communications 
Sub Title (in English)  
Keyword(1) Underwater Visible Light Communication  
Keyword(2) LED  
Keyword(3) Convolutional code  
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1st Author's Name Takuya Mori  
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 Yotaro Umeda  
3rd Author's Affiliation Tokyo University of science (Tokyo Univ. of science)
4th Author's Name Hiromasa Habuchi  
4th Author's Affiliation Ibaraki University (Ibaraki Univ.)
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Speaker Author-1 
Date Time 2015-12-17 13:30:00 
Presentation Time 120 minutes 
Registration for WBS 
Paper # WBS2015-63, ITS2015-35, RCC2015-65 
Volume (vol) vol.115 
Number (no) no.364(WBS), no.365(ITS), no.366(RCC) 
Page pp.139-144 
#Pages
Date of Issue 2015-12-10 (WBS, ITS, RCC) 


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