A method executed in a receiver that combines a decoder with an equalizer in a
single module, comprising receiving at time k a signal r(k) in the receiver. Selecting
as a signal transmitted by a transmitter a signal that minimizes the following
equation metric
##EQU1##
where {tilde over (h)}j(l) is related to both the transmission channel
and to the encoding structure in the transmitter, {tilde over (s)}(k) is a trial
symbol specified by a selected trellis transition and (k) is a symbol that
was previously decided. Applying the selected signal to the decoder to decode received symbols.