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Paper Abstract and Keywords
Presentation 2019-03-07 14:05
[Encouragement Talk] A Study of Signal Transmission Forms of Optical Wireless turbo Code system
Ran Sun, Hiromasa Habuchi, Yusuke Kozawa (Ibaraki Univ.) IT2018-96 ISEC2018-102 WBS2018-97
Abstract (in Japanese) (See Japanese page) 
(in English) For improving the reliability of optical wireless communications, the implementations of error correcting codes are investigated. As the typical modulation schemes used in optical wireless system using turbo code, which is one of the error correcting codes, pulse position modulation (PPM) and on-off keying (OOK) are well known. Although the transmission efficiency of OOK system is excellent, this system has an optimum decision level adjustment problem and a bit-slip problem. The PPM system does not have those problems, but the transmission efficiency becomes half of that of the OOK system. For solving the respective issues of OOK and PPM, Framed-DOOK, which can reduce background noise by taking difference, APPM, which combines amplitude shift keying (ASK) with OOK, and Hybrid PPM-OOK, which transmits signal using PPM and OOK simultaneously, have been proposed. In this presentation, the effective information rate (capacity) performances of the proposed systems are evaluated by computer simulation. As results, HPOS system, APPM system present the same bit error rate performance of the conventional PPM system, and have 1.5 times larger capacity than that of the conventional PPM system. For the tolerance to background noise, APPM system is the best of the 3 proposed systems. HPOS system shows the best performance at the tolerance to attenuation. In good communication environments (high transmitted power, low background noise, low attenuation), Framed-DOOK can achieve the highest effective information rate.
Keyword (in Japanese) (See Japanese page) 
(in English) Optical wireless communication / Turbo code / Framed-DOOK / APPM / Hybrid PPM-OOK / Effective information rate / Capacity /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 479, WBS2018-97, pp. 127-130, March 2019.
Paper # WBS2018-97 
Date of Issue 2019-02-28 (IT, ISEC, WBS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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 IT2018-96 ISEC2018-102 WBS2018-97

Conference Information
Committee IT ISEC WBS  
Conference Date 2019-03-07 - 2019-03-08 
Place (in Japanese) (See Japanese page) 
Place (in English) University of Electro-Communications 
Topics (in Japanese) (See Japanese page) 
Topics (in English) joint meeting of IT, ISEC, and WBS 
Paper Information
Registration To WBS 
Conference Code 2019-03-IT-ISEC-WBS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study of Signal Transmission Forms of Optical Wireless turbo Code system 
Sub Title (in English)  
Keyword(1) Optical wireless communication  
Keyword(2) Turbo code  
Keyword(3) Framed-DOOK  
Keyword(4) APPM  
Keyword(5) Hybrid PPM-OOK  
Keyword(6) Effective information rate  
Keyword(7) Capacity  
1st Author's Name Ran Sun  
1st Author's Affiliation Ibaraki University (Ibaraki Univ.)
2nd Author's Name Hiromasa Habuchi  
2nd Author's Affiliation Ibaraki University (Ibaraki Univ.)
3rd Author's Name Yusuke Kozawa  
3rd Author's Affiliation Ibaraki University (Ibaraki Univ.)
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Speaker Author-1 
Date Time 2019-03-07 14:05:00 
Presentation Time 25 minutes 
Registration for WBS 
Paper # IT2018-96, ISEC2018-102, WBS2018-97 
Volume (vol) vol.118 
Number (no) no.477(IT), no.478(ISEC), no.479(WBS) 
Page pp.127-130 
Date of Issue 2019-02-28 (IT, ISEC, WBS) 

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