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Abstract

A processing module including an interpolator, a demodulator, and a tracking module. The interpolator applies a feedback signal to a first digitized signal having a first data rate to produce a second digitized signal having a second data rate. The demodulator processes the second digitized signal to produce a digital composite signal having a timing component. The tracking module mixes the digital composite signal with a reference signal and produces the feedback signal. The tracking module may include a mixer, a filter, a comparator, a loop filter and a quantizer. The mixer and filter mixes an input signal with a reference signal to provide a filtered timing error signal. The comparator compares the timing error signal with a reference signal and produces an offset signal. The loop filter processes the offset signal to produce a filtered offset. The quantizer processes the filtered offset to produce the feedback signal.

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First Claim