CPC H04B 10/6165 (2013.01) [H04B 10/035 (2013.01)] | 10 Claims |
1. A method for phase correction, the method comprises:
generating in parallel and by a set of phase error detectors, a set of phase error detection results (PEDRs) related to a set of blocks of digital samples, the digital samples are frequency corrected and represent optical signals conveyed over a coherent optical communication link; wherein the PEDs introduce PED noise that is indifferent to phase errors of the set of the blocks of digital samples;
sending, in a sequential manner, the set of PEDRs, to a loop that comprises a loop filter;
generating, by the loop, phase difference results, wherein each phase difference result is indicative of a phase difference between a certain PEDR of the PEDRs and a loop filtered PEDR generated by filtering a PEDR that precedes the certain PEDR;
processing, by a phase correction unit, the digital samples and the phase different results, to provide phase corrected digital samples.
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