Patent ID: 7526022

Claim:
In a decision feedback equalizer receiving an input signal which has been digitally filtered and/or analog filtered, subject to a communication channel, and match-filtered and/or channel-matched filtered, the equalizer having a feedforward filter providing a first signal on a first path to an adder and a feedback filter providing a second signal on a second path to said adder, said filters processing an array of known data symbols and an array of unknown data symbols and providing a channel estimate based on the known data symbols, the improvement comprising a feedfuture transversal filter for reducing intersymbol interference, said feedfuture filter providing a third signal on a third path to said adder, wherein said first, second and third signals are iteratively added by said adder to produce an array of symbols substantially free of intersymbol interference, and wherein said feedfuture transversal filter includes one or more equalizers for receiving the array of known data symbols and the array of unknown data symbols and respectively providing an output of symbol estimates, a processor for receiving and combining the respective symbol estimates of said one or more equalizers to output a closest symbol estimate, said one or more equalizers providing an output of symbol estimates interdependent with the output of the other filters.