Patent ID: 7583729

Claim:
An adaptive equalizer comprising: a reference signal generator for generating a reference signal according to a first reference source; an equalization unit for processing a received signal according to a plurality of equalization coefficients to generate an equalized signal; a weighted signal generator for generating a weighted signal according to a second reference source; and a coefficient adapting circuit for adjusting the plurality of equalization coefficients according to the reference signal, the equalized signal, the weighted signal, and the received signal; wherein the coefficient adapting circuit comprises: an error computing unit, electrically connected to the equalization unit and the reference signal generator, for generating an error signal corresponding to the difference between the equalized signal and the reference signal; a projecting unit, electrically connected to the error computing unit, for generating a projected received signal according to a projection vector and the received signal, and for generating a projected error signal according to the projection vector and the error signal; and a coefficient computing unit, electrically connected to the projecting unit and the weighted signal generator, for adjusting the plurality of equalization coefficients according to the weighted signal, the projected error signal, and the projected received signal.