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 communication system. The device comprises a processor which is connected with the M antennas and which is formed so as to generate data to be transmitted through the M antennas, 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 among the plurality of matrices, is selected from within a codebook for N antennas (where N

主权项

1. A method of applying a precoding scheme in a wireless communication system, the method comprising:
selecting, by a transmitter, an Mt×R precoding matrix used for a plurality of antenna ports; and applying, by the transmitter, the Mt×R precoding matrix, wherein Mt denotes a number of the plurality of antenna ports and R denotes a number of layers, wherein the Mt×R precoding matrix is configured in a form of(w1·Q1w1·Q2w2·Q3-w2·Q4),wherein Q1 denotes a first element matrix for the Mt×R precoding matrix, Q2 denotes a second element matrix for the Mt×R precoding matrix, Q3 denotes a third element matrix for the Mt×R precoding matrix, and Q4 denotes a fourth element matrix for the Mt×R precoding matrix,
wherein w1 denotes a weight for the first and second element matrices, and w2 denotes a weight for the third and fourth element matrices, and wherein each of the first, second, third and fourth element matrices has Nt rows, wherein Nt is defined by Nt=Mt/2.