Efficient filter weight computation for a mimo system

Details Efficient filter weight computation for a mimo system Efficient filter weight computation for a mimo system

H - Electricity

04

J

H04J 1/00 (2006.01)

Patent

CA 2612342

Techniques to efficiently derive a spatial filter matrix are described. In a first scheme, a Hermitian matrix is iteratively derived based on a channel response matrix, and a matrix inversion is indirectly calculated by deriving the Hermitian matrix iteratively. The spatial filter matrix is derived based on the Hermitian matrix and the channel response matrix. In a second scheme, multiple rotations are performed to iteratively obtain first and second matrices for a pseudo-inverse matrix of the channel response matrix. The spatial filter matrix is derived based on the first and second matrices. In a third scheme, a matrix is formed based on the channel response matrix and decomposed to obtain a unitary matrix and a diagonal matrix. The spatial filter matrix is derived based on the unitary matrix, the diagonal matrix, and the channel response matrix.

L'invention porte sur des procédés qui permettent de dériver avec efficacité une matrice de filtre spatial. Dans un premier mécanisme, on dérive de manière itérative une matrice hermitienne itérative sur la base d'une matrice de réponse de canal, et on calcule indirectement une inversion de matrice en dérivant la matrice hermitienne de manière itérative. On dérive la matrice de filtre spatial sur la base de la matrice hermitienne et de la matrice de réponse de canal. Dans un second mécanisme, on effectue de multiples rotations afin d'obtenir de manière itérative une première et une seconde matrice pour une matrice pseudo-inverse de la matrice de réponse de canal. On dérive la matrice de filtre spatial sur la base de la première et de la seconde matrice. Dans un troisième mécanisme, on forme une matrice sur la base de la matrice de réponse de canal, que l'on décompose afin d'obtenir une matrice unitaire et une matrice diagonale. On dérive la matrice de filtre spatial sur la base de la matrice unitaire, de la matrice diagonale et de la matrice de réponse de canal.

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