A PRECODING METHOD USING MULTI-CODEBOOK

摘要

PURPOSE: A pre-coding method using a multi-codebook is provided to select and use a codebook suitable for an assigned channel environment, thereby increasing receiving performance. CONSTITUTION: One codebook is selected among a plurality of codebooks(S802). Information that the selected codebook indicates is transmitted. One PMI is selected among PMI(Precoding Matrix Index)s included in the selected codebook(S803). The selected PMI is transmitted. The codebook operates based on a correlation property between channels of a cell.