Patent ID: 7496147

Claim:
A method of transmitting information in a radio communication system, the method comprising: connecting a transmit station to at least two receiver stations via a radio communication interface; including a transmit antenna with at least two antenna elements at the transmit station and including a transmit antenna with at least two antenna elements at each of the receiver stations, wherein the transmit station and the receiver stations communicate using MIMO transmission; generating transmit signals for radiation from the antenna elements of the transmit antenna of the transmit station in a common process and matching the transmit signals with regards to a transmit energy to be used for radiation; detecting received signals received by antenna elements of receive antennas of the receiver stations in a linear signal processing through demodulation, taking into account space and time transmission characteristics between the transmit station and the respective receiver stations, wherein a receiver station specific transmit signal corresponds to a Rayleigh quotient; calculating individual transmit signals for the antenna elements of the transmit antenna of the transmit station before radiation using a modulator matrix; generating a transmit signal vector using a linear modulation of a data vector to be transmitted with the modulator matrix; processing the received signals, the processing including using a demodulation matrix for linear receive-side signal processing; connecting the transmit station to the receiver stations using at least one radio channel having a channel matrix; and including a system matrix in the modulator matrix specified by a product of the demodulator matrix and the channel matrix.