COMMUNICATION SYSTEM, TRANSMITTER APPARATUS, TRANSMISSION CONTROL METHOD, TRANSMISSION CONTROL PROGRAM, AND PROCESSOR

摘要

A precoding decision unit selects, from a plurality of precodings, a precoding that is to be used for spatially multiplexing the signals addressed to a plurality of receiver apparatuses. A filter multiplication unit multiplies the signals by a filter factor that is to be used in the precoding selected by the precoding decision unit.