Patent ID: 7362830

Claim:
A method using a smart antenna, comprising: separating at least one reception signal vector x(k) into a signal component x s (k)[=As(k)] and an interference/noise component x v (k)[=v(k)]; calculating correlation matrices {circumflex over (R)} ss (k) of the signal component and {circumflex over (R)} vv (k) of the interference/noise component, the correlation matrices having Hermitian and Toeplitz matrix property; updating a weight vector of a previous value into a current value using the calculated correlation matrices; outputting the updated weight vector; and weighting a received signal with the updated weight vector, wherein the correlation matrices are {circumflex over (R)} ss (k) and {circumflex over (R)} vv (k), and wherein ⁢ ⁢ R ^ ss ⁡ ( k ) = ( k - 1 ) ⁢ R ^ ss ⁡ ( k - 1 ) + R ^ ss ⁡ ( k ) k , ⁢ R ^ vv ⁡ ( k ) = ( k - 1 ) ⁢ R ^ vv ⁡ ( k - 1 ) + R _ vv ⁡ ( k ) k , ⁢ R _ ss ⁡ ( k ) = [ r ^ s , 0 ⁡ ( k ) r ^ s , 1 ⁡ ( k ) … r ^ s , N - 1 ⁡ ( k ) r ^ s , 1 * ⁡ ( k ) r ^ s , 0 ⁡ ( k ) … r ^ s , N - 2 ⁡ ( k ) ⋮ ⋮ ⋰ ⋮ r ^ s , N - 1 * r ^ s , N - 2 * ⁡ ( k ) … r ^ s , 0 ⁡ ( k ) ] , ⁢ R _ vv ⁡ ( k ) = [ r ^ v , 0 ⁡ ( k ) r ^ v , 1 ⁡ ( k ) … r ^ v , N - 1 ⁡ ( k ) r ^ v , 1 * ⁡ ( k ) r ^ v , 0 ⁡ ( k ) … r ^ v , N - 2 ⁡ ( k ) ⋮ ⋮ ⋰ ⋮ r ^ v , N - 1 * ⁡ ( k ) r ^ v , N - 2 * ⁡ ( k ) … r ^ v , 0 ⁡ ( k ) ] , ⁢ r ^ s , l ⁡ ( k ) = 1 N - l ⁢ ∑ i ⁢ ⁢ x s , i ⁡ ( k ) ⁢ x s , i + l * ⁡ ( k ) , l = 0 , 1 , … ⁢ , N - 1 , and ⁢ r ^ v , l ⁡ ( k ) = 1 N - l ⁢ ∑ i ⁢ ⁢ x v , i ⁡ ( k ) ⁢ x v , i + l * ⁡ ( k ) , l = 0 , 1 , … ⁢ , N - 1.