Base Station Apparatus, Radio Communication System and Radio Transmission Method

Abstract

[Problem] To realize radio data communication with high frequency efficiency and make all mobile station apparatus existing within a cell perform radio data communication without being affected by the deteriorated propagation path characteristics. [Means for Solution] A base station apparatus (1) transmitting radio signals using a multicarrier modulation system includes a time manager (12) for obtaining time information to manage it; a transmission power setting section (11) for setting to some subcarriers among all subcarriers a first transmission power which enables the radio signals to reach all areas within a cell; a transmitter (2b, 4, 8, 9, and 10) for transmitting the radio signals using the subcarriers to which the first transmission power is allocated; and the transmission power setting section (11) changes at a certain time interval, subcarriers to which the first transmission power is set based on the obtained time information.

Dependencies are inferred from the claim text.