Patent ID: 6763062
Filing Date: 2004-07-13
Classification: H01Q,H04B

Abstract:
In a radio communication system comprising a base station having an array antenna including a plurality of antenna elements, a receiving section which weights the amplitude and phase of each of received signals from the plurality of antenna elements by amplitude and phase weight values of each of the antenna elements set in the receiving section, then combines the weighted signals into a composite signal and demodulates the resultant composite signal and a transmitting section which divides a modulated signal into a plurality of transmit signals, then weights the amplitude and phase of each of the transmit signals by amplitude and phase weight values of each of the antenna elements set in the transmitting section and radiates each of the weighted transmit signals from a corresponding respective one of the antenna elements, and a number of terminal stations each of which is adapted to perform radio communications with the base station, the base station comprising:a desired/undesired wave information input section which stores an arrival direction and received power of a desired wave from each of the terminal stations and an arrival direction and received power of an undesired wave from an undesired wave source; and weight value rewrite means for recalculating an amplitude and phase weight values of each of the antenna elements to be used in the receiving and transmitting sections based on the information of the desired/undesired wave information input sections and rewriting the amplitude and phase weight values of each of the antenna elements already set in the receiving and transmitting sections with the recalculated weight values.