DATA TRANSMISSION DEVICE AND METHOD IN A WIRELESS COMMUNICATIONS SYSTEM

摘要

The present invention provides a data transmission device and method in a wireless communications system. The device comprises M antennae and also comprises a processor which is connected with the M antennae and which is formed so as to generate data to be transmitted through the M antennae, on the basis of a precoding matrix; the precoding matrix is generated based on a plurality of matrices; and a first matrix, which is one matrix from among the plurality of matrices, is selected from a code book for N antennae (where N < M).