A Commutating Decision Feedback Equalizer (CDFE) for Digital Mobile Radios

摘要

We propose a new structure of decision feed- back adaptive equalizer (DFE) suitable for use in mobile radio systems. The proposed structure named Commutating Decision Feedback Equalizer (CDFE) has two DFEs that operate in a com- mutating fashion; the two DFEs commutate between training and equalization. Such a commutating operation effectively lengthens the equalizer tracking period over time variant channels.