EQUALIZING DEVICE FOR COMPENSATING RAPID STATE OF POLARIZATION CHANGES OF AN OPTICAL SIGNAL

摘要

The present invention relates to the technical field of processing, particularly equalizing a digital signal representing samples of an optical signal, wherein the equalizing is supported by 2x2 MIMO channel estimation and State of Polarization (SOP) estimation. The digital signal comprises a training sequence followed by a payload. The invention presents an equalizing device, optical receiver including said equalizing device, and a corresponding method. The equalizing device is configured to generate a new instance of a 2x2 MIMO equalization filter based on one or more preceding instances of the equalization filter and on one or more samples of the payload. Further, the equalizing device is configured to equalize a sample of the payload by applying the new instance of the equalization filter to the sample.