System for reducing high-speed signal transmission intersymbol interference

The present invention relates to a system for reducing high-speed signal transmission intersymbol interference, characterized in that: the system includes an equalizer circuit, a decoding circuit, a digital integrator circuit, an intersymbol interference judgment circuit, a sampling circuit, a clock data recovery circuit; based on sampling, the system detects transition data as well as data before transition and data after transition outputted by the clock data recovery circuit (CDR) to obtain the equalizer circuit having an over equalizer state or an under equalizer state, and feedback of a strobe signal is given to the equalizer circuit whose frequency compensation is adjusted to widen an eye diagram, thereby reducing the intersymbol interference and improving transmission performance of the system.