Beamforming System using Adaptive Array in Forward Link

The present invention relates to an array (Array) antennas, and more particularly to a beam-forming system using the adaptive array in the forward link using the information reaching each of the signal received on the reverse link in the FDD mode. Determining for determining the beam-forming system, the arrival of the received incident signal arrival estimate for each (θ) quality of service requirements for each estimation and the received incident signal (QOS) parameters for the forward link in accordance with this invention, such unit, the estimated angles of arrival (θ) and, using the quality of service requirements (QOS) parameters, and is composed of a weight vector calculation for calculating a weight vector to the gain of the desired signal to the maximum. Accordingly, the present invention can be an effective spatial filtering in the forward link in the FDD mode of a mobile communication system, it is possible to reduce the size of a signal towards the interference signal or noise signal is not the direction of a desired user, for a particular user service according to the quality requirements (QOS) there is an effect that can actively control the position and location of the maximum gain of the channel is adaptively.