| 摘要 |
<p>Signals received by a plurality of antenna elements (11,12,13,14) are supplied to a beam forming circuit (51,52) via a distributor (41,42,43,44). The beam forming circuit (51,52) weights and combines the signals to output a reception signal corresponding to a beam having a predetermined directionality pattern. A weight used to control weighting and combining is set by a weight controller (7). Upon receiving a registration request from an unregistered terminal, the weight controller (7) calculates a weight vector used to form a beam having null directionality toward that terminal, and maximum directionality toward the range of an area other than an area where the terminal is located of a plurality of areas obtained by dividing the area covered by the antenna elements (11,12,13,14) in accordance with direction. <IMAGE></p> |
