Patent ID: 7292651

Claim:
A method for processing an OFDM signal received over a wireless communication channel, said OFDM signal comprising a packet of a number N of OFDM blocks, each OFDM block comprising a number K of signal tones, the method comprising the steps of sequentially receiving N channel-impaired OFDM blocks; computing noisy channel estimates, based on said channel-impaired blocks; arranging the noisy channel estimates into a first array having a first axis representative of a frequency index of the noisy channel estimates and a second axis representative of a time index of the noisy channel estimates; performing a two-dimensional inverse Fourier transform on said first array; multiplying the inverse Fourier transformed first array with a second array representing a two-dimensional filter to thereby form a third array; and performing a two-dimensional Fourier transform on said third array to thereby form a fourth array comprising elements representative of an estimate of channel parameters for said wireless communication channel.