CDMA mobile station apparatus

摘要

A CDMA mobile station apparatus receives a spread control signal including a non-orthogonal spread signal generated using a non-orthogonal spreading code that is non-orthogonal with a data signal spreading code, and a spread data signal produced by spreading a data signal with a data signal spreading code, from a base station apparatus via a radio link. The CDMA mobile station apparatus has a non-orthogonal spread signal generating unit for generating a non-orthogonal spread signal whose phase rotation caused by a radio transmission path is compensated for, using a non-orthogonal spreading code, a subtracting unit for subtracting the generated non-orthogonal spread signal from a received signal to generate a difference signal, and a data signal demodulating unit for demodulating the difference signal into a data signal using the data signal spreading code. The CDMA mobile station apparatus may have an arrangement for canceling a spread broadcasting signal in its entirety, an arrangement for processing a band-limited signal, or an arrangement for processing a spreading code with a suppression coefficient.