Blind equalization tap coefficient adaptation in optical systems

摘要

A method of blind tap coefficient adaptation includes receiving a digital data signal including random digital data, equalizing a first portion of the digital data signal using a first set of predetermined tap coefficients and a second portion of the digital data signal using a second set of predetermined tap coefficients. The method includes generating a first eye diagram and a second eye diagram from a first portion and a second portion of an equalized signal, respectively. The first eye diagram is compared with the second eye diagram to determine which of the sets of predetermined tap coefficients results in a data signal having a higher signal quality. The method includes inputting to an equalizer as an initial set of tap coefficients the first set of predetermined tap coefficients or the second set of predetermined tap coefficients according to the determination.

主权项

1. A method of blind tap coefficient adaptation in an optical system, the method comprising:
receiving a digital data signal including random digital data; equalizing a first portion of the digital data signal using a first set of predetermined tap coefficients to generate a first portion of an equalized signal; generating a first eye diagram from the first portion of the equalized signal output from an equalizer; equalizing a second portion of the digital data signal using a second set of predetermined tap coefficients to generate a second portion of the equalized signal; generating a second eye diagram from the second portion of the equalized signal output from the equalizer; comparing the first eye diagram with the second eye diagram; determining based on the comparison which of the first set of predetermined tap coefficients or the second set of predetermined tap coefficients results in the digital data signal having a higher signal quality; and inputting to the equalizer as an initial set of tap coefficients, the first set of predetermined tap coefficients or the second set of predetermined tap coefficients according to the determination.