Patent ID: 7031664

Claim:
A mobile communication apparatus having a mobile station and a base station including an antenna array, the mobile communication apparatus comprising: the mobile station measuring downlink characteristics of a channel of individual antennas from a signal received from the base station, detecting physical space information and approximate long-term information from the measured downlink characteristics, producing short-term information from the approximate long-term information and the downlink characteristics, transforming the short-term information and the physical space information into a feedback signal, and transmitting the feedback signal to the base station; and the base station receiving the feedback signal, extracting weighted information from the short-term information and the physical space information, which are restored from the received feedback signal, beamforming a dedicated physical channel signal using the weighted information, combining pilot channel signals with the result of the beamforming, and transmitting the results of the combinations to the mobile station via the antenna array, wherein the physical space information denotes space information about the location of the mobile station with respect to the base station, and the approximate long-term information denotes long-term information that is the most similar to long-term information in which the correlation characteristics of a channel of individual antennas are reflected.