Construction codebook precoding method and apparatus and a method, apparatus and system for

The present invention discloses a method and apparatus for constructing a codebook. The method comprising: receiving packet information about a plurality of transmitting antennas of base stations; acquisition channel model of a channel between the mobile terminal and the base station; based on the packet information and the channel model, is determined corresponding to each antenna grouping the optimal precoding matrix, to construct a precoding codebook. The present invention also discloses a method and apparatus for selecting a precoding matrix, and a method for precoding, devices and systems.