Patent ID: 8649251

Claim:
A method for multi-user multiplexing, comprising: a transmission apparatus performing a layer mapping on data steams to be transmitted of an open-loop user and a close-loop user respectively; the transmission apparatus performing a pre-coding processing on a layer data matrix of the open-loop user and the close-loop user obtained by the layer mapping; and the transmission apparatus mapping the layer data matrix after the pre-coding processing to a plurality of transmission antennas to be sent; wherein the step of performing the pre-coding processing comprises: calculating pre-coding matrixes W 1 and W 2 , wherein, said W 2 is a space vector of zero space of a channel matrix H 1 of the close-loop user, and said W 1 ensures that the signal to interference noise ratio of the close-loop user is a maximum value; completing the pre-coding processing on the pre-coding matrixes W 1 and W 2 and the layer data matrix of the open-loop user and the close-loop user according to a transmission matrix.