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Paper Abstract and Keywords
Presentation 2013-01-24 14:20
Experimental Demonstration of Triple-Concatenated Forward Error Correction for 40Gbps Coherent Optical Communication Systems
Kiyoshi Onohara, Yoshikuni Miyata, Kenya Sugihara, Susumu Hirano, Kazuo Kubo, Toshiyuki Ichikawa, Kazuumi Koguchi, Wataru Matsumoto, Hideo Yoshida, Takashi Mizuochi (Mitsubishi Electric Corporation) OCS2012-87
Abstract (in Japanese) (See Japanese page) 
(in English) High-speed and real-time digital signal processing technology enabled practical coherent optical communication systems by applying multilevel modulation such as quadrature phase shift keying. However the higher optical signal-to-noise ratio is required for multilevel modulation compared to conventional intensity modulation – direct detection or binary phase shift keying because of the decrease of Euclidean distance between adjacent symbols. Forward error correction (FEC) is one of promising ways to address this issue, and we have already proposed triple-concatenated FEC, which is the concatenation with a soft-decision based low-density parity-check code of an enhanced FEC comprising a concatenated pair of hard decision based block code.
In this paper, we report experimental demonstration of triple-concatenated FEC for 40 Gbps coherent optical communication systems. The triple-concatenated FEC achieves a Q-limit of 6.4 dB and a net coding gain of 10.8 dB at a post-FEC bit error ratio (BER) of 1E-15. In addition, we discuss the stability of the experimental system for long period of time measurement in the region at a post-FEC BER of 1E-15.
Keyword (in Japanese) (See Japanese page) 
(in English) Coherent Optical Communication / Concatenated Code / Forward Error Correction / Low-Density Parity-Check Code / / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 395, OCS2012-87, pp. 13-18, Jan. 2013.
Paper # OCS2012-87 
Date of Issue 2013-01-17 (OCS) 
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)
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Conference Information
Committee OCS CS  
Conference Date 2013-01-24 - 2013-01-25 
Place (in Japanese) (See Japanese page) 
Place (in English) Ehime Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Core and metro networks, Optical access systems, Next-generation PON, Broadband access systems, Wide-area Ethernet, Optical transport network, High-speed interface, Analog optical transmissions, Quantum communications, etc. 
Paper Information
Registration To OCS 
Conference Code 2013-01-OCS-CS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Experimental Demonstration of Triple-Concatenated Forward Error Correction for 40Gbps Coherent Optical Communication Systems 
Sub Title (in English)  
Keyword(1) Coherent Optical Communication  
Keyword(2) Concatenated Code  
Keyword(3) Forward Error Correction  
Keyword(4) Low-Density Parity-Check Code  
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Keyword(6)  
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1st Author's Name Kiyoshi Onohara  
1st Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corporation)
2nd Author's Name Yoshikuni Miyata  
2nd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corporation)
3rd Author's Name Kenya Sugihara  
3rd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corporation)
4th Author's Name Susumu Hirano  
4th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corporation)
5th Author's Name Kazuo Kubo  
5th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corporation)
6th Author's Name Toshiyuki Ichikawa  
6th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corporation)
7th Author's Name Kazuumi Koguchi  
7th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corporation)
8th Author's Name Wataru Matsumoto  
8th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corporation)
9th Author's Name Hideo Yoshida  
9th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corporation)
10th Author's Name Takashi Mizuochi  
10th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric Corporation)
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Speaker Author-1 
Date Time 2013-01-24 14:20:00 
Presentation Time 25 minutes 
Registration for OCS 
Paper # OCS2012-87 
Volume (vol) vol.112 
Number (no) no.395 
Page pp.13-18 
#Pages
Date of Issue 2013-01-17 (OCS) 


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