Cross Polarization Interference Cancellation Device And Cross Polarization Interference Cancellation Method

Abstract: A cross polarization interference cancellation device is used in a co channel based wireless communication device wherein a wireless communication is performed using a self polarization and a different polarization which have the same frequency with phases orthogonal to each other. The cross polarization interference cancellation device includes a first filter for removing a component outside a prescribed frequency range from a self polarization side signal a second filter for removing a component outside a prescribed frequency range from a different polarization side signal a cross polarization interference cancellation unit connected to the second filter and generating a cross polarization interference cancellation signal for removing the different polarization side signal that is superimposed on the self polarization side signal and becomes a cross polarization interference component and a computation unit for compensating the self polarization side signal by subtracting the cross polarization interference cancellation signal from the self polarization side signal passing through the first filter. Here the frequency range of the first filter is to be included in the frequency range of the second filter. Further an interference cancellation gain adjustment unit may be arranged at the front or the rear of the cross polarization interference cancellation unit.

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