Patent ID: 7336597

Claim:
A parallel-channel frequency-offset estimator to generate a frequency offset estimate comprising: a first autocorrelation element to perform a first autocorrelation on a serial symbol stream of training symbols delayed by a first duration to produce a first correlation output; a second autocorrelation element to perform a second autocorrelation on the serial symbol stream delayed by a second duration to produce a second correlation output; a first moving average element to perform a first moving average on the first correlation output for use in generating a first phase shift estimate; and a second moving average element to perform a second moving average on the second correlation output for use in generating a second phase shift estimate, wherein the first duration is a duration of one of the training symbols, and the second duration is twice the first duration, and wherein the first moving average element performs the first moving average over approximately one and a half durations, and the second moving average element performs the second moving average over approximately one-half durations on the second correlation output.