A decision feedback equalizer for processing a data signal provides
concurrent equalizer outputs for hard decision directed and soft decision
directed modes. The joint architecture in accordance with the present
invention takes advantage of the fact, herein recognized, that for each
equalizer output symbol soft decision bit representation, a subset of
these bits corresponds to the hard decision representation. As a result,
the invention permits the concurrent output of two distinct modes with
essentially the same hardware as a one output equalizer.