METHOD FOR TRANSMITTING CHANNEL INFORMATION, DEVICE THEREOF, BASE STATION, AND METHOD FOR TRANSMITTING FOR BASE STATION THEREOF

摘要

The present invention relates to transmission and reception using a multiple-input multiple-output (MIM0) antenna in a wireless communication system. More specifically, the invention is a method comprising the steps of: receiving a reference signal to estimate a channel; estimating a suitable pre-coding matrix from the estimated channel similar to a Discrete Fourier Transform (DFT) matrix which has at least two different DFT code books; providing a relatively large DFT matrix subset with a pre-coding matrix phase different from the set of said suitable pre-coding matrix; generating channel information which includes multiple access information on at least one DFT matrix which is small enough to be similar to said subset pre-coding matrix; and transmitting said channel information generated in said channel information generating step.