Patent ID: 7978760

Claim:
A decision feedback equalizer, comprising: a feed-forward filter generating a forwarding signal based on an input signal; a decision device, generating a first decision signal and a second decision signal which are associated with a summation signal; a feedback filter, coupled to the decision device, receiving the second decision signal for generating a feedback signal; an adjusting device, coupled to the feed-forward filter, the decision device and the feedback filter, respectively, adjusting the first decision signal according to a first weighting value for generating a first adjusted signal and transmitting the first adjusted signal to the feed-forward filter, and adjusting the feedback signal according to a second weighting value for generating a second adjusted signal; and a summation device coupled to the feed-forward filter, the decision device and the adjusting device, respectively, receiving the forwarding signal and the second adjusted signal for generating the summation signal and issuing the summation signal to the decision device.