| 摘要 |
To provide a base station capable of selecting an optimum beam from among transmitted ones of multi-beams. In the arrangement, a beam power determining part ( 4 ) determines M received signal powers of multi-beams, and a beam output selecting part ( 5 ) selects, based on the information of the received powers from the beam power determining part ( 4 ), a beam of the largest power from among M outputs of beam formers ( 31 - 3 M), and receives the selected beam. A transmission weight generating part ( 6 ) selects, based on the received information, a beam corresponding to the signal of a spread code selected by a mobile station and also selects another any beam to notify their respective transmission weighting coefficients. A transmitted beam forming part ( 7 ) weights transmitted data corresponding to transmission array antenna elements ( 91 - 9 N) with the transmission weighting coefficients. Spreaders ( 81,82 ) use respective different spread codes to spread input signals, and the transmission array antenna elements ( 91 - 9 N) send the beam-formed signals.
|
