A method for an orthogonal frequency division multiplex, OFDM, receiver to suppress an inter-carrier interference and noise signal in data received by the receiver by using a symbol interference free interval without inter-symbol interference, ISI, in a guard interval ,GI, of a received OFDM symbol, comprising: performing (S301, S303) FFT corresponding to a length of the GI on sample data of the symbol interference free interval and sample data of a rear portion (P3) corresponding to the symbol interference free interval of a corresponding effective symbol interval of the received OFDM symbol; measuring (S305) a first power spectrum of FFT result on the sample data of the symbol interference free interval and measuring (S307) a second power spectrum of FFT result on the sample data of the rear portion; estimating (S311) a value generated by performing (S309) an adding operation or an averaging operation on the first power spectrum to be a signal-to-noise ratio, SNR, of the symbol interference free interval and estimating (S313) a value generated by performing (S309) an adding operation or an averaging operation on the second power spectrum to be a SNR of the rear portion, for at least one subcarrier of which the first power spectrum and the second power spectrum are equal to or greater than a predetermined threshold value; performing (S105) a weighting operation between the sample data of the symbol interference free interval (S301) and the sample data of the rear portion (S303) by using the estimated SNR of the symbol interference free interval and the estimated SNR of the rear portion; and generating (S107) FFT input data from the received data by including into the effective symbol interval of the received data the weighting-operated sample data; performing (S109) an FFT on the FFT input data. performing (S301, S303) FFT corresponding to a length of the GI on sample data of the symbol interference free interval and sample data of a rear portion (P3) corresponding to the symbol interference free interval of a corresponding effective symbol interval of the received OFDM symbol; measuring (S305) a first power spectrum of FFT result on the sample data of the symbol interference free interval and measuring (S307) a second power spectrum of FFT result on the sample data of the rear portion; estimating (S311) a value generated by performing (S309) an adding operation or an averaging operation on the first power spectrum to be a signal-to-noise ratio, SNR, of the symbol interference free interval and estimating (S313) a value generated by performing (S309) an adding operation or an averaging operation on the second power spectrum to be a SNR of the rear portion, for at least one subcarrier of which the first power spectrum and the second power spectrum are equal to or greater than a predetermined threshold value; performing (S105) a weighting operation between the sample data of the symbol interference free interval (S301) and the sample data of the rear portion (S303) by using the estimated SNR of the symbol interference free interval and the estimated SNR of the rear portion; and generating (S107) FFT input data from the received data by including into the effective symbol interval of the received data the weighting-operated sample data; performing (S109) an FFT on the FFT input data. <EOS>