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A Pragmatic Coded Modulation Scheme for High-Spectral-Efficiency Fiber-Optic Communications

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2 Author(s)
Benjamin P. Smith ; Electrical and Computer Engineering Department, University of Toronto, Toronto, Canada ; Frank R. Kschischang

A pragmatic coded modulation system is presented that incorporates signal shaping and exploits the excellent performance and efficient high-speed decoding architecture of staircase codes. Reliable communication within 0.62 bits/s/Hz of the estimated capacity (per polarization) of a system with L=2000 km is provided by the proposed system, with an error floor below 10-20. Also, it is shown that digital backpropagation increases the achievable spectral efficiencies-relative to linear equalization-by 0.55 to 0.75 bits/s/Hz per polarization.

Published in:

Journal of Lightwave Technology  (Volume:30 ,  Issue: 13 )