Training-Aided Channel Estimation and Equalization in SDM Systems with MISO Pre-convergence under Strong Coupling

摘要

A simple DSP scheme receiver is proposed to circumvent laser frequency-offset effects in DA-CE based SDM systems using a MISO CMA pre-convergence stage. Numerical results demonstrate a successful operation for 12-mode fiber transmission under MDL, using QPSK and 16QAM mapping.