Apparatus and method for estimating and compensating sampling clock offset

The present invention discloses a device and method for estimating and compensating sampling clock offset (SCO), which has a lower complexity and a strong anti-interference ability. The device includes: a timing adjustment module, moving forward or backward the symbol timing of the transferred OFDM symbols; a Discrete Fourier Transform (DFT) processor, performing discrete Fourier transform to thetiming adjustment module; a channel estimator, performing channel frequency response (CFR) estimation based on the channel estimation sequence in the DFT processor output; an SCO phase rotator, receiving frame head and net charge output from the DFT processor, and executing phase displacement to the OFDM symbol of the DFT processor; an SCO estimation unit, performing SCO estimation according to the pilot sub-carrier relevant output of the SCO phase rotator and the CFR estimation from the channel estimator; and an SCO compensation allocation unit, dividing the SCO estimation into an integer part and a fractional part,