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

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 =20...

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Bibliographic Details
Published in:Journal of lightwave technology 2012-07, Vol.30 (13), p.2047-2053
Main Authors: Smith, B. P., Kschischang, F. R.
Format: Article
Language:English
Subjects:
Applied sciences
Backpropagation
Channel capacity
coded modulation
Coding, codes
Decoding
Detection, estimation, filtering, equalization, prediction
digital backpropagation
Equations
Exact sciences and technology
fiber-optic communications
forward error correction
Information, signal and communications theory
Mathematical model
Modulation
Modulation, demodulation
Nonlinear optics
Optical fiber communications
Optical telecommunications
Receivers
Signal and communications theory
Signal, noise
staircase codes
Telecommunications
Telecommunications and information theory
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Description
Summary: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.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2012.2185683