Patent ID: 8170158
Filing Date: 2012-05-01
Classification: H04B

Abstract:
1. A device for removing at least some of the cross-polar interference in a dual-polarization system, the device comprising: an A/D converter unit configured to: a correlator unit, communicatively coupled with the A/D converter unit, and configured to correlate the digitized in-phase component of the first communication signal with the digitized in-phase component of the second communication signal to generate a first portion of a correlation measurement; correlate the digitized in-phase component of the first communication signal with the digitized quadrature component of the second communication signal to generate a second portion of the correlation measurement; correlate the digitized quadrature component of the first communication signal with the digitized in-phase component of the second communication signal to generate a third portion of the correlation measurement; and correlate the digitized quadrature component of the first communication signal with the digitized quadrature component of the second communication signal to generate a fourth portion of the correlation measurement; and a cross-polar interference cancellation unit, communicatively coupled with the correlator unit, and configured to: generate, using the first portion or-the correlation measurement, a first correction term to remove at least some of the cross-polar interference from the digitized in-phase component of the first communication signal; generate, using the second portion of the correlation measurement, a second correction term to remove at least some of the cross-polar interference from the digitized in-phase component of the first communication signal; generate, using the third portion correlation measurement, a third correction term to remove at least some of the cross-polar interference from the digitized quadrature component of the first communication signal; and generate, using the fourth portion correlation measurement, a fourth correction term to remove at least some of the cross-polar interference from the digitized quadrature component of the first communication signal.