Patent ID: 8768279
Filing Date: 2014-07-01
Classification: H04B

Abstract:
1. A cross-polarization interference compensation apparatus comprising: a main signal reception unit which receives a signal having a first polarization direction; an interference signal reception unit which receives a signal having a second polarization direction crossing the first polarization direction; a phase control unit which controls a phase of the signal received by the interference signal reception unit; an interference compensation signal generation unit which generates an interference compensation signal by performing weighted combination on a time series of a signal output by the phase control unit, and setting weighting coefficients used for the weighted combination so that the interference compensation signal becomes a cross-polarization interference component of the signal received by the main signal reception unit; a phase estimation unit which estimates a phase difference between the signal received by the main signal reception unit and the signal received by the interference signal reception unit using information on the weighting coefficients; and a compensation unit which compensates the signal having the first polarization direction for cross-polarization interference caused by the signal having the second polarization direction using the interference compensation signal and the signal received by the main signal reception unit, wherein the phase control unit controls the phase of the signal received by the interference signal reception unit using the phase difference estimated by the phase estimation unit so that a phase of the signal received by the main signal reception unit and the phase of the signal received by the interference signal reception unit become identical.