Patent ID: 8085876

Claim:
A physical layer device, comprising: a tuner configured to down-convert a received data stream to provide a down-converted data stream using a first clock that is offset from a theoretical value of a carrier frequency of the received data stream by a first unknown offset; an analog to digital converter configured to sample the down-converted data stream to provide a digital data stream using a second clock that is offset from a theoretical value of a sampling frequency used to sample the received data stream by a second unknown offset, the first clock and the second clock being derived from a common reference clock; a carrier frequency offset (CFO) estimation module configured to estimate the first unknown offset to determine an estimated CFO; and a sampling frequency offset (SFO) correction module configured to multiply the estimated CFO by a ratio of the theoretical value of the sampling frequency to the theoretical value of the carrier frequency to determine the second unknown offset to provide an SFO correction.