Patent ID: 7602854

Claim:
A method of receiving an orthogonal frequency division multiplexing (OFDM) signal using an OFDM signal receiver comprising: receiving a plurality of sample signals from the OFDM signal; providing a plurality of reference sample signals; calculating a first value representing a first correlation between one of the sample signals and a different one of the sample signals; calculating a second value representing a second correlation between one of the reference sample signals and a different one of the reference sample signals, the one of the reference sample signals and the different one of the reference sample signals corresponding to the one of the sample signals and the different one of the sample signals, respectively; calculating a third value from the first value and the second value; and detecting the OFDM signal in response to the third value; wherein: the OFDM signal receiver comprises a computation unit and a controller; receiving a plurality of sample signals, providing a plurality of reference sample signals and calculating the first value, the second value and the third value are performed by the computation unit; and detecting the OFDM signal is performed by the controller.