Patent ID: 8218492

Claim:
An apparatus, comprising: a transceiver operable to communicate with a receiver in a wireless network and adapted to select an optimal mode for transmissions, wherein said receiver estimates said optimal mode and feeds it back to said transceiver which changes a transmitted mode accordingly; and wherein said optimal mode is based on a predetermined metric based on a performance equation that puts a threshold to separate between a high correlated signal to low correlation signal: wherein said predetermined metric is: metric = det ⁡ ( H * H ) ⁢ σ - 4 / tr ⁡ ( H * H ) ⁢ σ - 2 = λ 1 ⁢ λ 2 λ 1 + λ 2 ⁢ σ - 2 where H is a 2×2 MIMO channel, tr( ) and det( ) are trace and determinant respectively, λ 1,2 are the eigenvalues of H*H where * operator is conjugate transpose and σ 2 is the noise variance added in said receiver.