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Paper Abstract and Keywords
Presentation 2009-08-27 14:00
Nonlinear tolerance of Quadrature-Amplitude-Modulated signals in Digital Coherent Detection
Yojiro Mori, Chao Zhang, Masatoshi Usui, Koji Igarashi, Kazuhiro Katoh, Kazuro Kikuchi (Univ. of Tokyo) OCS2009-33
Abstract (in Japanese) (See Japanese page) 
(in English) The use of multi-level modulation formats is one of the most effective ways of enhancing the spectral efficiency in optical fiber communication systems. Quadrature amplitude modulation (QAM) is the best candidate among various modulation formats, because we can minimize the power penalty due to the increase in the level of modulation. However, such QAM signals require higher power to maintain the symbol distance on the complex plane. In contrast, the maximum optical power that can be launched into the fiber is strictly limited by fiber nonlinearity. In this paper, we demonstrate 1,000-km transmission of 1- and 3-ch 40-Gbit/s 16-QAM signals, and investigate the impact of nonlinear effects in such a system.
Keyword (in Japanese) (See Japanese page) 
(in English) Digital coherent receiver / Quadrature amplitude modulation / Digital signal processing / Adaptive equalization / / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 178, OCS2009-33, pp. 23-28, Aug. 2009.
Paper # OCS2009-33 
Date of Issue 2009-08-20 (OCS) 
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 OCS2009-33

Conference Information
Committee OFT OCS  
Conference Date 2009-08-27 - 2009-08-28 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To OCS 
Conference Code 2009-08-OFT-OCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Nonlinear tolerance of Quadrature-Amplitude-Modulated signals in Digital Coherent Detection 
Sub Title (in English)  
Keyword(1) Digital coherent receiver  
Keyword(2) Quadrature amplitude modulation  
Keyword(3) Digital signal processing  
Keyword(4) Adaptive equalization  
Keyword(5)  
Keyword(6)  
Keyword(7)  
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1st Author's Name Yojiro Mori  
1st Author's Affiliation The University of Tokyo (Univ. of Tokyo)
2nd Author's Name Chao Zhang  
2nd Author's Affiliation The University of Tokyo (Univ. of Tokyo)
3rd Author's Name Masatoshi Usui  
3rd Author's Affiliation The University of Tokyo (Univ. of Tokyo)
4th Author's Name Koji Igarashi  
4th Author's Affiliation The University of Tokyo (Univ. of Tokyo)
5th Author's Name Kazuhiro Katoh  
5th Author's Affiliation The University of Tokyo (Univ. of Tokyo)
6th Author's Name Kazuro Kikuchi  
6th Author's Affiliation The University of Tokyo (Univ. of Tokyo)
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Speaker Author-1 
Date Time 2009-08-27 14:00:00 
Presentation Time 25 minutes 
Registration for OCS 
Paper # OCS2009-33 
Volume (vol) vol.109 
Number (no) no.178 
Page pp.23-28 
#Pages 6 
Date of Issue 2009-08-20 (OCS) 

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