Patent ID: 8848747
Filing Date: 2014-09-30
Classification: H04B,H04J

Abstract:
1. A method for recovering an OTUk frame, the method comprising: receiving an optical signal sent by using a method of multi-lane distribution from the OTUk frame to an interface of an optical module, wherein each lane comprises frame header information of the OTUk frame, and the frame header information comprises a frame header byte for identifying lane information; converting the optical signal into an electrical signal, performing electrical equalization and demodulation on the electrical signal, and recovering multi-lane data from the demodulated signal; aligning and rearranging the data on each lane, according to a lane sequence identifier comprised in an overhead frame header of the data on each lane, and recovering the OTUk frame according to the aligned and rearranged data; detecting a bit error performance of each lane according to the recovered multi-lane data; performing feedback control on an equalizer by using the performance detection result; wherein detecting the bit error performance of each lane comprises: searching the overhead frame header comprising the lane sequence identifier in the lane data; and wherein performing feedback control on the equalizer by using the performance detection result comprises: notifying the equalizer of switching to a control algorithm having higher convergence efficiency, if the information of the overhead frame header is searched out, that the information of the overhead frame header is searched out indicates a bit error rate of the lane is low, and a current equalizer algorithm completes the preliminary split of an original signal component from a crosstalk signal component.