Patent ID: 7522673

Claim:
A method comprising: receiving estimated channel information for a space-time wireless communication system; coding signals for transmission by a multiple antenna transmitter based on the estimated channel information, wherein coding the signals comprises selecting symbols based on the estimated channel information; forming Eigen-beams, with a two-dimensional Eigen-beam-forming unit, based on the selected symbols and the estimated channel information, wherein forming the Eigen-beams comprises applying the following: X = ∑ k = 1 K ⁢ ⁢ C k , 1 ⁢ s k R + j ⁢ ∑ k = 1 K ⁢ ⁢ C k , 2 ⁢ s k I = O N i ⁢ Δ 1 2 ⁢ U H H ; ⁢ and sending the selected symbols via multiple antennas, wherein sending the selected symbols comprises sending the Eigen-beams via the multiple antennas.