| Presentation | 2017-06-15 Iterative Decoding between Carrier Phase Estimator and FEC Decoder for Optical High-Order QAM Signals Shuai Yuan, Koji Igarashi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(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) |
| Keyword(in English) | optical high-order QAM signal / phase noise / forward error correction |
| Paper # | OCS2017-12 |
| Date of Issue | 2017-06-08 (OCS) |
| Conference Information | |
| Committee | PN / NS / OCS |
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| Conference Date | 2017/6/15(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Akita Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Hiroshi Hasegawa(Nagoya Univ.) / Hideki Tode(Osaka Pref. Univ.) / Itsuro Morita(KDDI R&D Labs.) |
| Vice Chair | Haruki Ogoshi(Furukawa Electric) / Takehiro Tsuritani(KDDI Research) / Hideaki Furukawa(NICT) / Yoshikatsu Okazaki(NTT) |
| Secretary | Haruki Ogoshi(NICT) / Takehiro Tsuritani(Mitsubishi Electric) / Hideaki Furukawa(Kyushu Inst. of Tech.) / Yoshikatsu Okazaki(NTT) / (Sumitomo Electric Industries) |
| Assistant | Masahiro Nakagawa(NTT) / Keijiro Suzuki(AIST) / Kenichi Kashibuchi(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Photonic Network / Technical Committee on Network Systems / Technical Committee on Optical Communication Systems |
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| Language | JPN |
| 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 |
| 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.) |
| Date | 2017-06-15 |
| Paper # | OCS2017-12 |
| Volume (vol) | vol.117 |
| Number (no) | OCS-87 |
| Page | pp.pp.5-10(OCS), |
| #Pages | 6 |
| Date of Issue | 2017-06-08 (OCS) |