Paper Abstract and Keywords |
Presentation |
2020-09-04 09:40
A Study on Chip-Pair Codes for Synchronous Optical CDMA Systems Tomoko K. Matsushima, Shoichiro Yamasaki, Kyohei Ono (Polytechnic Univ.) IT2020-19 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
This paper proposes a class of chip-pair codes for synchronous optical code-division multiple access (CDMA) and shows a general construction method of these codes. The chip-pair codes can be obtained from generalized modified prime sequence codes (GMPSCs) based on extension fields GF($q$) where $q = p^m$, $p$ is a prime number and $m$ is a positive integer. It has been reported that optical CDMA systems using GMPSCs remove not only multi-user interference (MUI) but also optical interference (e.g. background light) whose intensity is constant during a slot of length $q^2$. Recently, the authors have reported that optical CDMA systems using GMPSCs also remove optical interference whose intensity varies by block with a length of $q$ chips. The present paper shows that optical CDMA system using the proposed chip-pair code and equal-weight orthogonal (EWO) scheme removes interference light whose intensity varies by shorter block with a length of $p$ chips without requiring an additional equipment. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
optical CDMA / generalized modified prime sequence code / chip-pair code / optical interference / background light / / / |
Reference Info. |
IEICE Tech. Rep., vol. 120, no. 157, IT2020-19, pp. 7-12, Sept. 2020. |
Paper # |
IT2020-19 |
Date of Issue |
2020-08-28 (IT) |
ISSN |
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) |
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IT2020-19 |
Conference Information |
Committee |
IT |
Conference Date |
2020-09-04 - 2020-09-04 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Online |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Error correcting codes, General |
Paper Information |
Registration To |
IT |
Conference Code |
2020-09-IT |
Language |
English (Japanese title is available) |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
A Study on Chip-Pair Codes for Synchronous Optical CDMA Systems |
Sub Title (in English) |
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optical CDMA |
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generalized modified prime sequence code |
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chip-pair code |
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optical interference |
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background light |
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1st Author's Name |
Tomoko K. Matsushima |
1st Author's Affiliation |
Polytechnic University (Polytechnic Univ.) |
2nd Author's Name |
Shoichiro Yamasaki |
2nd Author's Affiliation |
Polytechnic University (Polytechnic Univ.) |
3rd Author's Name |
Kyohei Ono |
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Polytechnic University (Polytechnic Univ.) |
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Speaker |
Author-1 |
Date Time |
2020-09-04 09:40:00 |
Presentation Time |
25 minutes |
Registration for |
IT |
Paper # |
IT2020-19 |
Volume (vol) |
vol.120 |
Number (no) |
no.157 |
Page |
pp.7-12 |
#Pages |
6 |
Date of Issue |
2020-08-28 (IT) |