COMMUNICATION DEVICE FOR MULTIPLE-POLARIZATION MULTIPLE-INPUT MULTIPLE-OUTPUT SYSTEM

PROBLEM TO BE SOLVED: To provide a communication device for a multiple-polarization multiple-input multiple-output system.SOLUTION: A communication device of the present invention comprises: a storage unit for storing at least one matrix; and a precoder for precoding a data stream so that it will be transmitted on the basis of a precoding matrix including one of at least one matrix. Each of diagonal blocks among a plurality of blocks included in the at least one matrix includes a matrix distinguished from a zero matrix, and each of remaining blocks excluding the diagonal blocks among the plurality of blocks includes a zero matrix.SELECTED DRAWING: Figure 4