| 摘要 |
PROBLEM TO BE SOLVED: To easily correct deviations between a transmission beam to be formed and a transmission beam which is actually formed, in a short time by controlling the beam, based on the measurement value of the ratio (D/U ratio) of desired wave power to interference wave power which is informed from a terminal station in a base station. SOLUTION: In a terminal station, a received D/U ratio is measured in a received D/U ratio measurement part 106, a transmission system generation part 107 inserts the received D/U ratio, and it is transmitted from a transmitter 108. In a base station, a transmission weight coefficient vector adjusting part 128 detects the difference from the D/U ratio predicted by a transmission beam, which is formed beforehand by using a weight coefficient vector at the time of reception, which is calculated by a received weight coefficient vector calculation part 125 of an adaptive array processing part, and the received D/U ratio of the terminal station, which is extracted by a detection part 126. Then, a transmission weight coefficient vector is adjusted. A transmission adaptive array part forms beams and transmits them via transmitters 133 to 135. |
