Patent ID: 8320500

Claim:
A receiver comprising: a plurality of branches, each including a Fast Fourier Transform (FFT) element responsive to an associated receiving antenna, followed by an associated filter, where each of said receiving antennas receives signals that resulted from applying a block of symbols to an Inverse Fast Fourier Transform (IFFT) element, the FFT element of branch i develops signals y[i,n,k], the filter of branch i multiplies signals y[i,n,k] by coefficients Ĥ*[i,n,k], coefficients Ĥ*[i,n,k] are complex conjugates of coefficients Ĥ[i,n,k] and coefficients Ĥ[i,n,k] are estimates of a channel through which said received signals reach the antenna of branch i, where i=1, 2, . . . , N, N being a number of branches of the plurality of branches, n refers to time, and k=1, 2, . . . , K, K being a number of orthogonal frequency division multiplexing (OFDM) tones; a combiner configured to combine output signals of said filters; a decision element responsive to an output signal of said combiner, the decision element being configured to develop a block of decoded symbols that is a decoded version of the block of symbols; and a channels estimator, responsive to said block of decoded symbols and to output signals of said FFT elements for developing coefficients for said filters and applying the developed coefficients to said filters.