Transmission device, receiving device, information transmission method, information receiving method in wireless communication system, and recording medium

摘要

The present invention relates to a transmission device, a receiving device, an information transmission method, and an information receiving method in a wireless communication system, and a recording medium in which data of a codebook used for transmitting and receiving information is recorded.

主权项

1. A transmission device in a wireless communication system, the transmission device comprising:
a layer mapper to map a codeword to one or more layers; and a precoder to precode symbols mapped by the layer mapper, by using an n*n precoding matrix matched with an input precoding matrix indicator among n*n precoding matrixes included in a codebook for an n*n Multi Input Multi Output (MIMO), which includes the n*n precoding matrixes obtained by combining 4*4 precoding matrixes included in a codebook for a 4*4 MIMO, wherein the codebook for the n*n MIMO includes preceding matrixes obtained by combining the 4*4 preceding matrixes in such a manner as to multiply each of the 4*4 precoding matrixes included in the codebook for the 4*4 MIMO by an (n/4)2 number of constants.