Fujitsu Corporation

Mobile Tech, Inc.

Mayumi Kodani

Takuya Mori

Toshiaki Funakubo

Shoichi Miyamoto

Ayanori Matsuda

A plurality of carriers are divided into two systems, one on a low-frequency side and the other on a high-frequency side, a transmitting unit that executes processing for transmitting a signal wirelessly is provided in each of the two systems, and output lines of transmit amplifiers of each of the transmitting units are directly coupled and input to an antenna. A feedback unit on the low-frequency side feeds a low-frequency carrier signal portion contained in the transmit signal back to a distortion compensating unit on the low-frequency side, and a feedback unit on the high-frequency side feeds a high-frequency carrier signal portion contained in the transmit signal back to a distortion compensating unit on the high-frequency side. The distortion compensating units compensate for distortion on the low- and high-frequency sides.

Radio communication apparatus

A Walsh code assigning apparatus includes a retaining unit retaining assignment order information about an order of assignment of the plural Walsh codes such that one Walsh code having a smaller bit length becomes unable to he orthogonally separated as being precedent over another Walsh code having a larger bit length and a controller including a retrieving unit retrieving an idle Walsh code having an assignment request bit length in accordance with the assignment order information retained in the retaining unit, and assigning unit assigning the idle Walsh code, which has been obtained by the retrieving unit, to the spreading code of a last-named communication channel for which the assignment request is issued.

Growing community of inventors

Kawasaki, Japan

Mayumi Kodani