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:
equalizing a first portion of a received digital data signal using a first set of predetermined tap coefficients, wherein the received digital data signal includes random digital data; generating a first eye diagram from a first portion of an equalized signal, wherein the first portion of the equalized signal is based on the first portion of the received digital data signal; equalizing a second portion of the received digital data signal using a second set of predetermined tap coefficients; generating a second eye diagram from a second portion of the equalized signal, wherein second portion of the equalized signal is based on the second portion of the received digital data signal; determining which of the first set of predetermined tap coefficients or the second set of predetermined tap coefficients results in a data signal having a higher signal quality based on an evaluation of the first eye diagram and the second eye diagram; and adopting 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.