A radio communication system, method, and apparatus using a complex
coefficient transversal filter which removes an image are provided.
Accordingly, it is possible to improve an image suppression ratio over a
wide band by applying the complex coefficient transversal filter which
removes an image by using a phase delay of real and imaginary signals to
a multi-band, wide-band portable radio communication system. In addition,
it is possible to reduce a circuit's size and power consumption.