Patent ID: 6985523

Claim:
An apparatus for providing adaptive equalization of a receiver channel of a satellite terminal of a satellite communication system, said apparatus comprising: a digital filter comprising a first register for receiving input data signals and a second register for receiving a set of filter coefficients, said digital filter operative for multiplying said input data signals contained in said first register by said set of coefficients contained in said second register, said digital filter generating a set of output signals on the basis of the result of the multiplication between said input data signals and said set of filter coefficients; an equalizer coupled to said digital filter so as to receive said set of output signals generated by said digital filter as input signal, said equalizer operative for adapting said set of filter coefficients so as to generate an updated set of filter coefficients, said updated set of filter coefficients functioning to modify the performance of said filter to compensate for phase and amplitude variations in said input data signals; and a tap-shifting circuit coupled to said equalizer so as to receive said updated set of filter coefficients, said tap-shifting circuit operative for analyzing said updated set of filter coefficients so as to identify the most significant coefficients, and for shifting the location of the coefficients such that said most significant coefficients are located substantially in the center of said second register when said updated set of filter coefficients are placed in said second register.