A real/complex dual combination channel equalizer is provided, which is capable
of minimizing the complexity of a channel equalizer while maintaining the performance
of a real and complex mode. The real/complex dual combination channel equalizer
includes a combination of elements for inputting real data and imaginary data to
a channel select unit, outputting data selected by the channel select unit, yielding
real filter output data and imaginary filter output data by multiplying tap coefficients
to the outputted data and performing operations, selecting data among the yielded
data, outputting a final data of the real filter by subtracting the value outputted
from a real decision orientation filter unit from the selected data, outputting
real/complex decision data and an error by the outputted data, and renewing the
tap coefficient by the data outputted from the channel select unit and the error.
