RADIO COMMUNICATION SYSTEM, RADIO COMMUNICATION DEVICE, AND RADIO COMMUNICATION METHOD

摘要

In a radio communication system using data transmission by multi-user MIMO, the present invention reduces the overhead for signaling control information for data reception and demodulation to receiving stations. A transmitting station having plural antennas includes: a control information calculation unit that calculates control information for use by plural receiving stations according to a multi-user MIMO data transmission scheme; a control information transmission parameter calculation unit that calculates a control information transmission parameter based on spatial channel related information; and a control information transmission signal creation unit that creates a control information transmission signal, using the control information transmission parameter and a pilot signal. A resource element mapping unit maps control information transmission signals onto corresponding resource elements for transmission. On the other hand, the receiving stations each include a control information acquisition unit that acquires plural pieces of control information signaled on the corresponding resource elements, acquire control information destined for each receiving station, and demodulate received signals.