Journal
JOURNAL OF LIGHTWAVE TECHNOLOGY
Volume 31, Issue 23, Pages 3839-3852Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2013.2288677
Keywords
Fiber nonlinearity; information theory; optical fiber communication; perturbation methods
Funding
- Italian Ministry for Education University and Research (MIUR) under the FIRB project COTONE
- Ericsson
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The problem of analytical evaluation of the maximum rate at which information can be reliably transmitted on a nonlinear wavelength division multiplexing fiber-optic channel with a given modulation format and detection strategy is addressed. An approximate solution of the nonlinear Schrodinger equation is adopted to obtain an accurate analytical discrete-time channel model, valid for arbitrary link configurations and modulation formats. By exploiting the concept of mismatched decoding, considering a sub-optimum detection strategy that accounts for intra-channel nonlinearities, the proposed model is employed to derive closed-form expressions of the achievable information rate with various modulation formats. All the analytical results are verified through comparison with numerical simulations in different scenarios.
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