Transmit beamforming utilizing channel estimation matrix decomposition feedback in a wireless MIMO communication system

摘要

A method and apparatus for a communication system having a first transceiver device having a first plurality of antennas and a second transceiver device having a second plurality of antennas determines a channel estimation matrix describing a forward channel in which a signal travels from the first transceiver device to the second transceiver device. The channel estimation matrix is decomposed to derive a unitary matrix and an upper triangular matrix. A precoding matrix is developed using the upper triangular matrix, and the precoding matrix is used to control transmission of a modulated signal.