Method for transmitting a downlink signal in a base station cooperative wireless communication system and an apparatus for same

The present invention relates to a method for determining a precoding matrix for downlink signal transmission in a base station cooperative wireless communication system. In particular, the method includes the steps of: a first base station receiving from a first terminal first channel information between the first base station and the first terminal, and second channel information between a second base station and the first terminal; the first base station transferring the first channel information and the second channel information to the second base station; the first base station determining a first precoding matrix for a first channel which maximizes the efficiency of transmission to the first terminal; and the second base station determining a second precoding matrix for a third channel between the second base station and the first terminal in order for a signal transmitted from the second base station to the first terminal to be arranged in an area where a signal transmitted from the first base station to the first terminal is not used.