| 摘要 |
PURPOSE: An adaptive array structure for a wireless communication using a direction finding technique is provided to eliminate factors of unstabilizing system performance, and achieve a simple, low cost, and fast processing adaptive array structure. CONSTITUTION: An array antenna(200) collects data(X1-XL) from sensors(1-L) corresponding to respective antennas. A beam forming part(300) obtains a weight vector for beam formation by functioning as a space filter with respect to transmitted/received signals through the respective antennas. An adaptive signal processing part(700) determines a weight vector of beam formation, and controls a beam forming time in an adaptive manner. An information AI inputted to the adaptive signal processing part(700) is used at a base station. An adder(400) adds adaptively arrayed signals. A direction finding part(600) estimates an arrival direction of a signal by using a multi signal classification method. A digital switch(500) transfers an output of the adder(400) to the direction finding part(600) or the adaptive signal processing part(700).
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