CHANNEL SPREADING DEVICE AND METHOD FOR CDMA COMMUNICATION SYSTEM

摘要

A channel spreading device for a base station in a CDMA communication system is described. The device comprises a spreading code generator (911, 913) for generating a real-component spreading code and an imaginary-component spreading code corresponding to a designated channel spreading code index; a circuit receiving a mode contro l signal, for disabling generating of the imaginary-component spreading code when the received mode control signal indicates a BPSK (Binar y Phase Shift Keying) modulation mode; and a complex multiplier (915, 917, 919, 921) receiving a channel signal, for complex multiplying the received channel signal by the spreading codes to spread the channel signal.