Patent ID: 8744021

Claim:
A method for improving signal quality in a receiver, comprising: receiving a signal having a bandwidth containing at least a desired channel signal, at a desired channel frequency, using a local oscillator of the receiver; sampling the received signal using an analog-to-digital converter (ADC) in the receiver to provide a digitized output signal of the ADC; determining spectral characteristic data relating to the digitized output signal of the ADC; processing the spectral characteristic data to identify one or more blocking signals and corresponding blocking signal frequencies; determining one or more blocking spur signals, each having a blocking spur level and corresponding blocking spur frequency based on the one or more blocking signals and ADC characterization data; calculating a ratio of an estimated desired channel signal level to a total interfering blocking spur level, wherein the total interfering blocking spur level is the sum of each blocking spur level that falls into the desired channel; determining whether the ratio is below a first threshold; and adjusting the frequency of one or more oscillators in the receiver based on the ratio being below the first threshold.