Patent ID: 8498327

Claim:
A signal generation device for a base station apparatus that includes a reception circuit and a first transmission circuit, for receiving a TDD (Time Division Duplex) signal transmitted from a counterpart wireless communication apparatus and received by the reception circuit through an antenna and supplying a transmission signal to the antenna through the first transmission circuit, the signal generation device comprising: a channel estimation unit which estimates a channel estimation value based on a known signal contained in the received TDD signal, the channel estimation value including a channel response of the known signal generated in a transmission path between the signal generation device and the counterpart wireless communication apparatus and a fluctuation generated by a second transmission circuit of the counterpart wireless communication apparatus that has transmitted the known signal; a correction signal generation unit which generates a correction signal including the fluctuation generated by the second transmission circuit of the counterpart wireless communication apparatus that has transmitted the known signal based on the channel estimation value; and a transmission signal weighting unit which outputs the transmission signal generated by weighting transmission data containing the correction signal using a transmission weight to the first transmission circuit.