Patent ID: 6590933
Filing Date: 2003-07-08
Classification: G11B,H04L

Abstract:
A method for use in data communications equipment for improving convergence of a hybrid decision feedback apparatus including an adaptive feed-forward equalizer and an adaptive decision feedback equalizer, said method comprising the steps of:transforming the adaptive feed-forward equalizer into an equivalent feed forward equalizer represented by a z-transformation FFEâ€²(z)=FFE(z)[1âˆ’EP(ZN)]â€ƒwhere, FFEâ€²(z) is the equivalent feed-forward equalizer; FFE(z) is an adaptive feed-forward equalizer; EP(ZN) is an adaptive error predictor, wherein N is a sampling factor; and transforming the adaptive decision feedback equalizer into an equivalent decision feedback equalizer represented by a z-transformation DFEâ€²(z)=EP(z)+DFE(z)[1âˆ’EP(z)]â€ƒwhere, DFEâ€²(z) is the equivalent decision feedback equalizer; DFE(z) is an adaptive decision feedback equalizer; EP(Z) is the adaptive error predictor.