Apparatus and method for transmission beam forming of antenna array in a mobile communication system

摘要

An apparatus and method in which a base station transmitter transmits the common beam to all mobile stations in a base station via an antenna array having at least two antennas, and forms a traffic beam according to a position of each mobile station. The base station transmitter determines a weight vector of the traffic beam based on a position of each mobile station. The base station transmitter calculates a common beam weight vector for all angles in order to minimize a difference between a power of a signal received at the mobile station through the antenna array and a template function of the antenna arrayat all angels; calculates a traffic beam weight vector in order to minimize a reception power difference between a traffic beam to be transmitted to a position of the mobile station and the common beam, based on the calculated common beam weight vector; multiplies the calculated traffic beam weight vector by a signal to be output to the antenna array; and transmits the traffic beam to the mobile station.