Interference eliminating apparatus and method

摘要

A RAKE receiving unit (50) despreads and RAKE-combines a receive signal by a spreading code codel of a desired signal. A correlation calculation unit (61) in a canceling-signal generator (60) calculates a correlation value F between the spreading code codel and a non-orthogonal code code2. An amplitude-ratio acquisition unit (62) acquires an amplitude ratio A between a pilot signal and an undesired signal contained in the receive signal, a RAKE combiner (63) RAKE-combines multipath channel estimation values, and a canceling-signal output unit (64) multiplies the correlation value F, amplitude ratio A and result B of RAKE-combination of the channel estimation values and generates a canceling signal (undesired signal component) X. A signal eliminating unit 70 subtracts the canceling signal X from the RAKE-combined signal R that is output from the RAKE receiving unit (50), thereby outputting the desired signal.