Patent ID: 8265561

Claim:
A radio communication apparatus that receives a first signal of a first communication system to which a first frequency band is allocated and a second signal of a second communication system to which a second frequency band, different from the first frequency band, is allocated, the radio communication apparatus comprising: a first receiver that processes a first signal of the first frequency band received by a first antenna; a second receiver that processes a second signal of the second frequency band and a third signal of a third frequency band, adjacent to the second frequency band, received by a second antenna; an interference estimation unit that estimates an interference component based on a nonlinear distortion component of the second signal of the second frequency band; an inverter that inverts the interference component estimated by the interference estimation unit into an inverse phase of the interference component; and an adder circuit that adds the inverse phase of the interference component to the first signal of the first frequency band processed by the first receiver, wherein nonlinear distortion is caused in modulation by a transmitting apparatus that transmits the second signal of the second frequency band.