Patent Document ID: 8817834
Application ID: 13462717
Patent Flag: 1

Claim One:
1. A method for wireless communication, the method comprising: in a communication device: receiving a plurality of radio frequency (RF) channels in a receiver of said communication device; downconverting said received plurality of received RF channels to baseband frequencies; determining average in-phase (I) and quadrature (Q) gain and phase mismatch of said downconverted channels; determining a curvature of gain mismatch for said downconverted channels utilizing a blind source separation (BSS) estimation algorithm; removing said average I and Q gain and phase mismatch of said downconverted channels; determining a residual phase tilt and a residual amplitude tilt of said downconverted channels with removed average I and Q gain and phase mismatch; and compensating for said determined residual phase tilt and said determined residual amplitude tilt of said downconverted channels with removed average I and Q gain and phase mismatch, wherein compensating for said determined residual phase tilt comprises passing a signal through a phase tilt correction filter, and wherein said signal comprises a sum of two channels shifted in frequency based on said determined curvature of said gain mismatch.