Patent ID: 7843228

Claim:
A method comprising: obtaining an input signal based, at least in part, on one or more signals received by a receiver; extracting a first spectral component of the an input signal at a first frequency that is less than a reference frequency by a first specified frequency difference and a second spectral component of the input signal at a second frequency that is greater than the reference frequency by a second specified frequency difference, wherein the first and second specified frequency differences are each less than a frequency span between integer values associated with adjacent bins of digital data as sampled from the input signal at a specified sampling rate; calculating a frequency error value based, at least in part, on the first and second spectral components, wherein the frequency error value relates a fundamental frequency of the input signal and the reference frequency; and providing one or more signals representing the frequency error value to an apparatus that is operatively affected by the one or more signals representing the frequency error value.