Compensation of nonlinear fibre impairments in coherent systems employing spectrally efficient modulation formats

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Date
2011-07
Authors
Rafique, Danish
Zhao, Jian
Ellis, Andrew D.
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The Institute of Electronics, Information and Communications Engineers
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Abstract
We investigate electronic mitigation of linear and non-linear fibre impairments and compare various digital signal processing techniques, including electronic dispersion compensation (EDC), single-channel back-propagation (SC-BP) and back-propagation with multiple channel processing (MC-BP) in a nine-channel 112 Gb/s PM-mQAM (m=4,16) WDM system, for reaches up to 6,320 km. We show that, for a sufficiently high local dispersion, SC-BP is sufficient to provide a significant performance enhancement when compared to EDC, and is adequate to achieve BER below FEC threshold. For these conditions we report that a sampling rate of two samples per symbol is sufficient for practical SC-BP, without significant penalties.
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Keywords
Digital signal processing , Coherent communication
Citation
Rafique, D., Zhao, J., Ellis, A.D. (2011) 'Compensation of Nonlinear Fibre Impairments in Coherent Systems Employing Spectrally Efficient Modulation Formats'. IEICE Transactions On Communications, E94B (7):1815-1822. doi: 10.1587/transcom.E94.B.1815
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Copyright (c) 2011 The Institute of Electronics, Information and Communication Engineers