Patent ID: 7577206

Claim:
An Orthogonal Frequency Division Multiplexing (OFDM) signal receiver comprising: an equalizer configured to equalize an received baseband signal to provide an equalized signal; a channel measurement unit configured to estimate a channel characteristic from the received baseband signal and to generate information about good subcarrier indexes as Channel State Information (CSI); a Common Phase Error (CPE) estimation unit configured to estimate good pilot subcarriers and good data subcarriers from the equalized signal based upon the CSI, to calculate a first CPE and to calculate a second CPE from the estimated good data subcarriers, wherein the CPE estimation unit comprises: a subcarrier estimator configured to estimate the good pilot subcarriers and the good data subcarriers; and a CPE determination part configured to calculate the first CPE and the second CPE and to combine the first CPE and the second CPE to generate a final CPE.