Patent ID: 6804217
Filing Date: 2004-10-12
Classification: H04B

Abstract:
A CDMA mobile station apparatus for receiving a signal from a base station apparatus via a radio link, the received signal including a spread control signal, which includes a non-orthogonal spread signal that is generated by using a non-orthogonal spreading code which is non-orthogonal with a data signal spreading code, and a spread data signal that is produced by spreading a data signal with a data signal spreading code, said apparatus comprising:non-orthogonal spread signal generating means for generating, without using the received signal, a non-orthogonal spread signal by using a non-orthogonal spreading code which corresponds to the non-orthogonal spreading code that is used to generate the non-orthogonal spread signal of the received signal; substracting means for substracting the generated non-orthogonal spread signal from the received signal so as to generate a difference signal; and data signal demodulating means for demodulating the difference signal into a data signal by using the data signal spreading code.