TRANSMITTER, RECEIVER, COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND INTEGRATED CIRCUIT

摘要

High transmission efficiency is realized in either SU-MIMO or MU-MIMO by enabling expansion to a greater number of ports than the conventional number of ports by means of efficient signaling. A transmitter which transmits data by a spatial multiplexing transmission protocol, wherein a reference signal generator (906) generates a reference signal to be transmitted together with a data signal, a control information generator (911) generates information which indicates the reference signal and a control signal including power offset information and a port, which indicate the combination of the reference signal and power offset information of the data signal, and the control information generator (911) transmits the generated reference signal and the control signal from a transmission antenna (909).