Compensation of nonlinear fibre impairments in coherent systems employing spectrally efficient modulation formats
Ellis, Andrew D.
The Institute of Electronics, Information and Communications Engineers
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.
Digital signal processing , Coherent communication
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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