Patent ID: 8938025
Filing Date: 2015-01-20
Classification: H04B,H04L

Abstract:
1. A method for compensating for I/Q impairments of a receiver, the method comprising: digitizing an analog I signal and an analog Q signal to produce respectively a digital I signal and a digital Q signal, wherein the analog I signal and the analog Q signal are results of I/Q demodulation being performed on an analog input signal; filtering the digital I signal and the digital Q signal in accordance with a 2×2 matrix of digital filters to produce a filtered digital I signal and a filtered digital Q signal, wherein the 2×2 matrix of digital filters at least partially compensates for I/Q impairments of the receiver over a range of frequencies, wherein a frequency response of at least one diagonal component of the 2×2 matrix is computed based on measurements of the I/Q impairments over the range of frequencies as a function of frequency, wherein a frequency response of at least one non-diagonal component of the 2×2 matrix is computed based on the measurements.