Decision Feedback Equalizer

A Decision Feedback Equalizer (DFE) is a technique used in communication systems to improve signal quality by reducing errors caused by distortion or noise. It works by using past decisions about the signal to cancel out interference that was previously received, helping to clarify the current signal. Essentially, it "remembers" what was detected earlier and uses that information to make more accurate choices now, enhancing overall data transmission clarity and reliability, especially in noisy or distorted channels.