Kevin S. Oler, Brent R. Petersen and Abu B. Sesay, "Duplex decision feedback equalization system." U. S. Patent No. 6,031,866, assignee Telecommunications Research Laboratories, Canada, issued Feb. 29, 2000.


A system for equalization of two-way digital communications between a base and portable unit is described. Equalization is implemented in a manner so as to reduce the complexity of the portable unit. The reverse link (portable to base transmission) is equalized by a decision feedback equalizer (DFE). The forward link (base to portable) is equalized by an asymmetric decision feedback equalizer (ADFE), which consists of a forward filter located at the transmitter, and a decision feedback filter at the receiver.


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