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Paper Abstract and Keywords
Presentation 2017-05-25 14:25
A Study on Design of Two-Layered Pseudo-Noise Code for Optical-Wireless Code Shift Keying/Synchronous CDMA
Takashi Tokunaga, Hiromasa Habuchi, Yusuke Kozawa (Ibaraki Univ.) WBS2017-1
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, a design of two-layered pseudo-noise (PN) code for optical-wireless code shift keying
(CSK) is considered. One of the important issues encountered in optical-wireless CSK systems is to design a PN
code for enhancing code division multiple access (CDMA) capability and a ratio N/L between the number of codes
(N) and the PN code length (L). In this paper, a code shift keying system using two-layered PN codes which consist
of outer-codes with M chips and inner-codes with W chips is proposed. Since the receiver of the proposed system
can use the two-step demodulation scheme, it is expected that the proposed system suppress the performance
degradation caused by co-channel interference. Consequently, N/L of the proposed system achieves more than 1.
Moreover, when the length of the inner code is NI and the length of outer code is No, the proposed system can
accommodate NI users without co-channel interference in synchronous CDMA.
Keyword (in Japanese) (See Japanese page) 
(in English) Optical wireless communication / Code shift keying / Bi-orthogonal code / Optical PN code / Optical code division multiple access / Modified Pseudo orthogonal M-sequence / two-layered pseudo-noise code /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 51, WBS2017-1, pp. 1-5, May 2017.
Paper # WBS2017-1 
Date of Issue 2017-05-18 (WBS) 
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 WBS2017-1

Conference Information
Committee WBS SAT  
Conference Date 2017-05-25 - 2017-05-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Utsunomiya Univ. Yoto Campus 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Coding, Modulation, Demodulation, Signal Processing Technique, etc. 
Paper Information
Registration To WBS 
Conference Code 2017-05-WBS-SAT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Design of Two-Layered Pseudo-Noise Code for Optical-Wireless Code Shift Keying/Synchronous CDMA 
Sub Title (in English)  
Keyword(1) Optical wireless communication  
Keyword(2) Code shift keying  
Keyword(3) Bi-orthogonal code  
Keyword(4) Optical PN code  
Keyword(5) Optical code division multiple access  
Keyword(6) Modified Pseudo orthogonal M-sequence  
Keyword(7) two-layered pseudo-noise code  
Keyword(8)  
1st Author's Name Takashi Tokunaga  
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 2017-05-25 14:25:00 
Presentation Time 25 minutes 
Registration for WBS 
Paper # WBS2017-1 
Volume (vol) vol.117 
Number (no) no.51 
Page pp.1-5 
#Pages 5 
Date of Issue 2017-05-18 (WBS) 

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