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Reducing the Complexity of Digital Nonlinear Compensation for High-Speed Coherent Optical Communication Systems

Guiomar, F. P. ; Amado, S. B. ; Pinto, A. N.

Reducing the Complexity of Digital Nonlinear Compensation for High-Speed Coherent Optical Communication Systems, Proc International Conference on Applications of Optics and Photonics - AOP2014, Aveiro, Portugal, Vol. 9826, pp. 92864L-1 - 92864L-9, August, 2014.

Digital Object Identifier: 10.1117/12.2063839

Abstract
We perform a thorough performance and complexity analysis of a recently proposed Volterra series nonlinear equalizer (VSNE) for digital post-compensation of nonlinear fiber impairments in high-speed and long-haul coherent optical communication systems. Using a maximum absolute value selection criteria, we implement a pruning strategy for the matrix-based VSNE and compare its performance/complexity with the symmetric VSNE (symVSNE) and simpli ed VSNE (simVSNE) algorithms. The theoretical analysis is supported by simulation results obtained for a single-channel 224 Gb/s PM-16QAM transmission system with a signal propagation distance of 1920 km.