Patent ID: 7839898

Claim:
A time synchronization offset compensation apparatus for Orthogonal Frequency Division Multiplexing (OFDM) symbol demodulation comprising: a receiver comprising an average time synchronization offset calculator adapted to calculate an average time synchronization offset between a phase reference symbol of a time-synchronization acquired frame and phase reference symbols of frames subsequent to the time-synchronization acquired frame, on the basis of the phase reference symbol of the time-synchronization acquired frame; the receiver comprising a reference clock frequency difference calculator coupled to the average time synchronization offset calculator, the reference clock frequency difference calculator being adapted to calculate a reference clock frequency difference between a transmitter and the receiver on the basis of the average time synchronization offset and a time difference between two phase reference symbols; and the receiver comprising a time synchronization offset compensator coupled to the reference clock frequency difference calculator, the time synchronization offset compensator being adapted to compensate a time synchronization offset on the basis of the average time synchronization offset and the reference clock frequency difference.