Patent ID: 6526271
Filing Date: 2003-02-25
Classification: H04B,H04W

Abstract:
A base station apparatus, comprising:a receiver that receives a signal which includes signals transmitted from a plurality of mobile stations, said plurality of mobile stations being divided into at least a first mobile station that causes a relatively large amount of interference to other mobile stations and at least a second mobile station that causes relatively little interference to other mobile stations; a mobile station identifier that identifies the first mobile station of said plurality of mobile stations as a specific mobile station; a first demodulator that extracts a signal transmitted from the specific mobile station out of the signal received by said receiver and demodulates the extracted signal; a generator that generates at least one replica from the demodulation result of said first demodulator; an interference canceler that cancels interference, caused by the signal transmitted from the specific mobile station, from the received signal by using the received signal and the at least one replica; and a second demodulator that extracts a signal transmitted from the second mobile station out of the received signal after interference cancellation and demodulates the extracted signal.