Patent ID: 8553521

Claim:
A Wireless Transmit/Receive Unit (WTRU) for multiple-input multiple-output (MIMO) communication in a single carrier frequency division multiple access (SC-FDMA) system, the WTRU comprising: a first set of fast Fourier transform (FFT) units configured to perform FFT on data for transmission to generate frequency domain data; a beamformer configured to scale the frequency domain data with an inverse of a diagonal matrix (D) and apply a steering matrix (V) to the scaled frequency domain data, wherein the steering matrix (V) comprises eigenvectors of a matrix formed by a product of a Hermitian transpose of a channel matrix (H) and the channel matrix (H), and the diagonal matrix (D) comprises a square root of the eigenvalues of a product of the channel matrix (H) and the Hermitian transpose of the channel matrix (H); a plurality of subcarrier mapping units configured to map the frequency domain transmit data on subcarriers assigned for transmission; a first set of inverse Fourier transform (IFFT) units configured to perform IFFT on transmit data mapped to the assigned subcarriers to generate time domain transmit data; and a plurality of transmit antennas configured to transmit the time domain transmit data.