PMD equalization method and device, electronic equipment and storage medium

Abstract

The embodiment of the invention provides a PMD equalization method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining a to-be-processed signal, and carrying out the pre-equalization processing of the to-be-processed signal through employing a radius guide linear Kalman RDLKF algorithm; determining a target state vector in the to-be-processed signal based on a pre-equalization processing process of the to-be-processed signal; determining tap coefficient initial values of a plurality of filters for performing equalization processing on the signal to be processed according to the determined target state vector; based on the initial value of the tap coefficient, determining the tap coefficient of each filter in the plurality of filters at the current moment by utilizing a first preset expression; and based on the tap coefficient of the filter at the current moment, performing equalization processing on the to-be-processed signal after pre-equalization processing. According to the embodiment of the invention, the convergence speed of PMD equalization can be improved.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a PMD equalization method, device, electronic equipment and storage medium. Background technique [0002] In recent years, with the rapid growth of the transmission rate of the optical fiber communication system, PMD (Polarization Mode Dispersion, polarization film dispersion) has become the primary factor limiting the bandwidth-distance product of the system. In the optical fiber communication system with a rate of 40Gbit / s and above, PMD has a non-negligible influence, which seriously limits the capacity and transmission distance of the optical fiber communication system. At the same time, PMD is a random phenomenon that changes with time, temperature, and fiber laying conditions, and it is difficult to monitor and compensate. Therefore, in actual use, it is usually necessary to use an equalization algorithm to compensate the PMD, so that the optical fiber commun...

AI Technical Summary

Problems solved by technology

[0004] According to the inherent characteristics of the FIR filter, usually the number of taps of the FIR filter is large, the complexity of the correlation operation between the signal transmitted to the FIR filter and the tap coefficient of the filter is relatively high, resulting in the convergence speed of the tap coefficient It is relatively slow. Therefore, when the existing CMMA method equalizes PMD, there is a problem that the convergence speed of the tap coefficient is relatively slow in the process of converging from the preset initial value to the optimal value.

Images