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| Presentation | 2017-06-15 11:20 Iterative Decoding between Carrier Phase Estimator and FEC Decoder for Optical High-Order QAM Signals Shuai Yuan, Koji Igarashi (Osaka Univ.)  OCS2017-12 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Optical high-order QAM signals are more sensitive to phase noise in coherent detection. In order to compensate for the phase noise, digital carrier phase estimation schemes by digital signal processing in the receiver have been intensively proposed. Note that the phase noise cannot be completely compensated due to large additive white Gaussian noise (AWGN) at the low signal-to-noise ratio (SNR) region. The residual phase noise causes the excess continuous errors. Considering that forward error correction (FEC) is usually introduced at the low SNR region, and the excess continuous errors degrade the bit error ratio (BER) performance of the following FEC, which is called post-FEC BER performance. In this paper, we introduce iterative decoding between a carrier-phase estimator and an FEC decoder to compensate for the excess continuous errors. We numerically and experimentally evaluate the performance of iterative decoding for 20%-overhead coded 16QAM signals. The results suggest that the iterative decoding is effective for improving the post-FEC BER performance of 16QAM signals impaired by phase noise with AWGN. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | optical high-order QAM signal / phase noise / forward error correction / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 117, no. 87, OCS2017-12, pp. 5-10, June 2017. | |
| Paper # | OCS2017-12 | |
| Date of Issue | 2017-06-08 (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 | OCS2017-12 |
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| Conference Information | |
| Committee | PN NS OCS |
| Conference Date | 2017-06-15 - 2017-06-16 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Akita Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | OCS |
| Conference Code | 2017-06-PN-NS-OCS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Iterative Decoding between Carrier Phase Estimator and FEC Decoder for Optical High-Order QAM Signals |
| Sub Title (in English) | |
| Keyword(1) | optical high-order QAM signal |
| Keyword(2) | phase noise |
| Keyword(3) | forward error correction |
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| 1st Author's Name | Shuai Yuan |
| 1st Author's Affiliation | Osaka University (Osaka Univ.) |
| 2nd Author's Name | Koji Igarashi |
| 2nd Author's Affiliation | Osaka University (Osaka Univ.) |
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| Speaker | Author-1 |
| Date Time | 2017-06-15 11:20:00 |
| Presentation Time | 25 minutes |
| Registration for | OCS |
| Paper # | OCS2017-12 |
| Volume (vol) | vol.117 |
| Number (no) | no.87 |
| Page | pp.5-10 |
| #Pages | 6 |
| Date of Issue | 2017-06-08 (OCS) |
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