| 摘要 |
A frequency offset correction system includes a phase shift estimation unit and correction unit. The phase shift estimation unit estimates a pilot phase shift from pilot signal data for a plurality of bits, and estimates a data phase shift of data from the pilot phase shift for each bit when the frequency offset of a received signal having data of an in-phase component whose bit rate is variable, and pilot signal data of a quadrature component is small. The correction unit sequentially adds data phase shifts and pilot phase shifts estimated by the phase shift estimation unit, and performs frequency offset correction of the received signal using a phase shift obtained by selectively inserting the estimated pilot phase shifts in the added estimated data phase shifts. A frequency offset correction method is also disclosed.
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