Patent ID: 8103236
Filing Date: 2012-01-24
Classification: H04B

Abstract:
1. A signal processing method for a receiver comprising: receiving an input signal within a first frequency range, the input signal including a desired signal and an interference signal; down-converting the input signal to a second frequency range using an offset local oscillator signal having a frequency substantially equal to a central frequency of the desired signal, wherein the second frequency range is lower than the first frequency range; separating the interference signal from the down-converted input signal; up-converting the separated interference signal to the first frequency range; subtracting the up-converted interference signal from the input signal at the first frequency range to obtain an interference removed signal; and down-converting the interference removed signal to a third frequency range for demodulating using a local oscillator signal, wherein the third frequency range is lower than the first frequency range and the frequency of the offset local oscillator signal is different from a frequency of the local oscillator signal.