Patent ID: 8638889

Claim:
A carrier recovery loop for compensating for a frequency offset in a received communication signal, the frequency offset being relative to a transmitted communication signal, the carrier recovery loop comprising: a derotator module configured to adjust the received communication signal based upon an oscillator signal to compensate for the frequency offset to provide a derotated communication signal; an automatic frequency control (AFC) detector module configured to raise the derotated communication signal to a power of an integer to provide a sinusoidal spectral component and to determine a cross product of the sinusoidal spectral component to provide a first phase error; a slicer module configured to determine a most-likely transmitted sequence of the transmitted communication signal based upon the derotated communication signal to provide a recovered sequence of data; a phase error detector module configured to compare the derotated communication signal and the recovered sequence of data to provide a second phase error; a mode selector module configured to provide the first phase error from the AFC detector module in a coarse mode of operation and the second phase error from the phase error detector module in a fine acquisition mode of operation; and a numerically controlled oscillator (NCO) module configured to provide the oscillator signal based upon one of the first phase error and the second phase error that has been provided by the mode selector module.