METHOD AND APPARATUS FOR SINGULAR VALUE DECOMPOSITION OF A CHANNEL MATRIX

摘要

A method and apparatus for decomposing a channel matrix in a wireless communication system are disclosed. A channel matrix H is generated (202) for channels between transmit antennas and receive antennas. A Hepaitian matrix A=H^HH or A=HH^H is created (204) . A Jacobi process is cyclically performed (206) on the matrix A to obtain Q and DA matrixes such that A = QDAQ^H. DA is a diagonal matrix obtained by singular value decomposition (SVD) on the A matrix. In each Jacobi transformation, real part diagonalization is performed to annihilate real parts of off -diagonal elements of the matrix and imaginary part diagonalization is performed to annihilate imaginary parts of off-diagonal elements of the matrix after the real part diagonalization. U, V and DH matrixes of H matrix are then calculated (208) from the Q and DA matrices. DH is a diagonal matrix comprising singular values of the H matrix.