Ntt Docomo, Inc.

Ntt Mobile Communications Network, Inc.

Ryuusuke Kaneda

Tadao Takami

Seiji Hagiwara

A wireless communication apparatus is provided in which a wireless part receives multipath detection information sent from a wireless communication apparatus at the other end (a mobile station, for example) and provides the multipath detection information to a multipath component canceling signal generation part. The multipath component canceling signal generation part generates a multipath component canceling signal based on the multipath detection information, and provides the multipath component canceling signal to the wireless part. The wireless part sends the multipath component canceling signal with a send wave to the wireless communication apparatus at the other end.

Wireless communication apparatus and wireless communication method

In a radio transmission amplifier unit which has between input and output terminals a gain-controlled amplifier,, a pre-amplifier,connected to the output thereof and a main amplifier,supplied with the output therefrom, the range of the transmitting power level is divided into small, medium and large regions. In the small transmitting power level region, the power supply to the pre- and main amplifiers is cut off by power-supply switches,and,and the output of the gain-controlled amplifier,is connected to a terminal,via switches,and,; in the medium transmitting power level region, the power-supply switch,is turned ON and the switch,OFF to connect the switch,to the pre-amplifier and the output of the pre-amplifier is connected to the terminal,via switches,and,; and in the large transmitting power level region, the power-supply switches,and,are turned ON to connect the switch,to the pre-amplifier, a switch,is connected to the main amplifier, and the output of the main amplifier is connected to the terminal,via the switch

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Yokohama, Japan

Ryuusuke Kaneda