Cross polarization interference canceler and cross polarization interference eliminating apparatus using the same

A cross polarization interference eliminating apparatus comprising, independently with respect to first and second polarized waves:

• demodulator means for demodulating by a quasi-synchronous detection system one polarized wave out of the first and second polarized waves which are received and have a cross polarization relationship;
• a transversal equalizer carrying out a wave equalization with respect to an output demodulated data of said demodulator means;
• a reference signal generating circuit generating a reference signal which is eliminated of phase rotation based on phase rotation control information and baseband signal obtained from a part of the demodulator means on the side of the other polarized wave of said demodulator means;
• a cross polarization interference canceler generating an interference canceling signal corresponding to an interference wave component included in the output demodulated data of said demodulator means based on the reference signal obtained from said reference signal generating circuit;
• an adder circuit outputting demodulated in-phase signal and quadrature signal by adding the output interference canceling signal of said cross polarization interference canceler to the output demodulated data of said transversal equalizer;
• and
• a controller generating a phase rotation control signal from the output in-phase signal and quadrature signal of said adder circuit and feeding back the same to said demodulator means.