Signal processing devices and signal processing methods

A signal processing method, comprising:

• adaptively adjusting a set of first coefficients of a first equalizer according to an error signal, wherein the set of first coefficients comprises a plurality of first coefficients;
• selectively performing a limit operation on the first coefficients according to a control signal after adaptively adjusting the set of first coefficients, wherein when the limit operation of the first coefficients is performed, at least one of the first coefficients is set to a first predetermined value to generate a set of limited first coefficients;
• and
• providing the set of first coefficients or the set of limited first coefficients to the first equalizer for the first equalizer to perform filtering according to the set of first coefficients or the set of limited first coefficients,
• wherein the set of first coefficients and the set of limited first coefficients are coefficients of the first equalizer in time domain.

A signal processing method, comprising:

• adaptively adjusting a set of first coefficients of a first equalizer according to an error signal, wherein the set of first coefficients comprises a plurality of first coefficients;
• and
• providing the set of first coefficients or a set of limited first coefficients to the first equalizer for the first equalizer to perform filtering according to the set of first coefficients or the set of limited first coefficients,
• wherein the set of first coefficients and the set of limited first coefficients are coefficients of the first equalizer in frequency domain, and wherein the step of adaptively adjusting the set of first coefficients of the first equalizer according to the error signal further comprises:
• selectively performing a limit operation of the first coefficients according to a control signal, wherein when the limit operation of the first coefficients is performed, at least one of the first coefficients is further adjusted according to a weakening factor and the set of limited first coefficients is generated.