Learning-based Digital Backpropagation Scheme for Digital Subcarrier Multiplexing Optical Communication systems

In this paper, we propose a learning-based digital backpropagation (LDBP) scheme for digital subcarrier multiplexing (SCM) systems. Compared with the conventional digital backpropagation (DBP) technique, simulation results show that it can effectively improve the nonlinear mitigation capability and reduce computational complexity.