Fiber Nonlinearity and Tight Filtering Impairments Mitigation of DP-16QAM Nyquist-WDM Systems Using Multiplier-Free MAP Detection
Tight filtering and fiber Kerr effect both cause severe pattern-dependent distortions that need to be combated to achieve higher spectral efficiency (SE), larger capacity and greater achievable transmission distance in the next generation wavelength division multiplex (WDM) optical transmission syst...
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IEEE
2019-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8869907/ |
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| author | Tao Yang Chen Shi Liqian Wang Xue Chen Haoyuan Pan Huan Chen Min Zhang Zhiguo Zhang |
| author_facet | Tao Yang Chen Shi Liqian Wang Xue Chen Haoyuan Pan Huan Chen Min Zhang Zhiguo Zhang |
| author_sort | Tao Yang |
| collection | DOAJ |
| description | Tight filtering and fiber Kerr effect both cause severe pattern-dependent distortions that need to be combated to achieve higher spectral efficiency (SE), larger capacity and greater achievable transmission distance in the next generation wavelength division multiplex (WDM) optical transmission system. In this paper, a novel multiplier-free maximum-a-posteriori-probability (MAP) detection scheme is proposed and verified in dual-polarization (DP) 16-ary quadrature amplitude modulation (16-QAM) Nyquist-WDM systems. Based on the innovative technique of approximate calculation of Euclidean distance, the competitive performance is obtained in terms of pattern-dependent impairments mitigation. Besides, the computational complexity (CC) is drastically reduced to about 34%, as the multiplier of the proposed MAP detection is completely removed. Comprehensive simulation results of triple-carrier Nyquist DP 16-QAM demonstrate that the MAP scheme could effectively mitigate the tight filtering and fiber nonlinearity impairments with much lower CC, i.e., achieve desirable SE and nonlinearity tolerance in long-haul transmissions. In addition, a 1.1 dB reduction of the required OSNR and 2.6 dB launch power range extension are observed in the triple-carrier 480 Gb/s Nyquist DP 16-QAM back-to-back and 700 km transmission experiments, respectively. The advantages of the proposed low-complexity MAP scheme make it a preferable impairment mitigation technique for practical Nyquist-WDM systems. |
| format | Article |
| id | doaj-art-efcf7e95cbb64984a4448dc2d5968ae4 |
| institution | DOAJ |
| issn | 1943-0655 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-efcf7e95cbb64984a4448dc2d5968ae42025-08-20T02:44:40ZengIEEEIEEE Photonics Journal1943-06552019-01-0111611410.1109/JPHOT.2019.29474598869907Fiber Nonlinearity and Tight Filtering Impairments Mitigation of DP-16QAM Nyquist-WDM Systems Using Multiplier-Free MAP DetectionTao Yang0https://orcid.org/0000-0001-9568-8300Chen Shi1Liqian Wang2Xue Chen3https://orcid.org/0000-0001-5219-8176Haoyuan Pan4Huan Chen5Min Zhang6Zhiguo Zhang7State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, ChinaDepartment of Electrical and Computer Engineering, Iowa State University, Ames, IA, USAState Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, ChinaState Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, ChinaState Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, ChinaState Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, ChinaState Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, ChinaState Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, ChinaTight filtering and fiber Kerr effect both cause severe pattern-dependent distortions that need to be combated to achieve higher spectral efficiency (SE), larger capacity and greater achievable transmission distance in the next generation wavelength division multiplex (WDM) optical transmission system. In this paper, a novel multiplier-free maximum-a-posteriori-probability (MAP) detection scheme is proposed and verified in dual-polarization (DP) 16-ary quadrature amplitude modulation (16-QAM) Nyquist-WDM systems. Based on the innovative technique of approximate calculation of Euclidean distance, the competitive performance is obtained in terms of pattern-dependent impairments mitigation. Besides, the computational complexity (CC) is drastically reduced to about 34%, as the multiplier of the proposed MAP detection is completely removed. Comprehensive simulation results of triple-carrier Nyquist DP 16-QAM demonstrate that the MAP scheme could effectively mitigate the tight filtering and fiber nonlinearity impairments with much lower CC, i.e., achieve desirable SE and nonlinearity tolerance in long-haul transmissions. In addition, a 1.1 dB reduction of the required OSNR and 2.6 dB launch power range extension are observed in the triple-carrier 480 Gb/s Nyquist DP 16-QAM back-to-back and 700 km transmission experiments, respectively. The advantages of the proposed low-complexity MAP scheme make it a preferable impairment mitigation technique for practical Nyquist-WDM systems.https://ieeexplore.ieee.org/document/8869907/Maximum-a-posteriori-probability detectionpattern-dependent impairment mitigationcoherent optical communicationquadrature amplitude modulation. |
| spellingShingle | Tao Yang Chen Shi Liqian Wang Xue Chen Haoyuan Pan Huan Chen Min Zhang Zhiguo Zhang Fiber Nonlinearity and Tight Filtering Impairments Mitigation of DP-16QAM Nyquist-WDM Systems Using Multiplier-Free MAP Detection IEEE Photonics Journal Maximum-a-posteriori-probability detection pattern-dependent impairment mitigation coherent optical communication quadrature amplitude modulation. |
| title | Fiber Nonlinearity and Tight Filtering Impairments Mitigation of DP-16QAM Nyquist-WDM Systems Using Multiplier-Free MAP Detection |
| title_full | Fiber Nonlinearity and Tight Filtering Impairments Mitigation of DP-16QAM Nyquist-WDM Systems Using Multiplier-Free MAP Detection |
| title_fullStr | Fiber Nonlinearity and Tight Filtering Impairments Mitigation of DP-16QAM Nyquist-WDM Systems Using Multiplier-Free MAP Detection |
| title_full_unstemmed | Fiber Nonlinearity and Tight Filtering Impairments Mitigation of DP-16QAM Nyquist-WDM Systems Using Multiplier-Free MAP Detection |
| title_short | Fiber Nonlinearity and Tight Filtering Impairments Mitigation of DP-16QAM Nyquist-WDM Systems Using Multiplier-Free MAP Detection |
| title_sort | fiber nonlinearity and tight filtering impairments mitigation of dp 16qam nyquist wdm systems using multiplier free map detection |
| topic | Maximum-a-posteriori-probability detection pattern-dependent impairment mitigation coherent optical communication quadrature amplitude modulation. |
| url | https://ieeexplore.ieee.org/document/8869907/ |
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