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Design >> Analog Design >> why FFE amplifies noise more than DFE
https://designers-guide.org/forum/YaBB.pl?num=1151511058

Message started by sugar on Jun 28^th, 2006, 9:10am

Title: why FFE amplifies noise more than DFE
Post by sugar on Jun 28^th, 2006, 9:10am

Feed forward equalizer uses high frequency boosting mechanism to compensate high frequency loss, so
at the same, noise in the input signal will be boosted too. Why decision feedback equalizer doesn't boost
noise? (Let's assume same coefficent-tuning algorithm is used for both FFE and DFE, e.g. zero-forcing
algorithm)