Correction of the receiving channels fiber optic transmission systems on the basis of PDM and N-OFDM with decimation

The article describes the implementation of optic transmission systems with combined scheme of multiplexing - N-OFDM-PDM, and rapid changes of the signal between OFDM, OFDMA or N-OFDM. To reduce the computational load on the digital segment, it is proposed a distributed digital signal processing low speed digitization with the use of thinning. For correct decoding, the proposed variant of correction of possible imbalance of the polarization channels.