EQUALIZATION PROCESSING CIRCUIT, DIGITAL RECEIVER, SIGNAL TRANSMISSION/RECEPTION SYSTEM, EQUALIZATION PROCESSING METHOD, AND DIGITAL RECEPTION METHOD

摘要

This invention makes it such that waveform distortion having semi-fixed characteristics and waveform distortion that varies rapidly can both be compensated for with a high degree of precision. This equalization processing circuit includes a frequency-domain equalization means that uses inputted frequency-domain equalization coefficients to perform frequency-domain equalization on a digital signal, a time-domain equalization means that uses inputted time-domain equalization coefficients to perform time-domain equalization on said digital signal, a waveform-distortion detection means that detects dynamic waveform distortion and quasi-static waveform distortion in the equalized digital signal, a frequency-domain-equalization-coefficient control means that computes the frequency-domain equalization coefficients on the basis of said quasi-static waveform distortion, and a time-domain-equalization-coefficient control means that computes the time-domain equalization coefficients on the basis of the aforementioned dynamic waveform distortion.