Patent ID: 8824398

Claim:
A radio communication system, comprising: a plurality of receiving stations; and a transmitting station having a plurality of antennas transmitting individual data destined for each of the receiving stations, and a controller, wherein the controller of the transmitting station: calculates a data transmission processing parameter using spatial channel related information, calculates effective channel gains for the data using the spatial channel related information, transmits a control information transmission signal to each of the receiving stations using corresponding radio resources, and transmits the data processed using the data transmission processing parameter to each of the receiving stations, wherein each of the receiving stations performs reception processing of the data using the effective channel gains, wherein the spatial channel related information is a matrix whose elements are all radio paths between the receiving stations and the antennas of the transmitting station, and wherein the transmitting station multiplies a pilot signal and a control information transmission parameter, and transmits a result thereof to each of the receiving stations as the control information transmission signal, where the control information transmission parameter is a product of the effective channel gains and an inverse matrix of the spatial channel related information.