Patent ID: 7085331

Claim:
An apparatus for processing data in a radio communication system based on a complex quadrature phase shift keying, comprising: a first multiplying means for multiplying a long pseudo noise (PN) code and multiplying with an in-phase pseudo noise code (Ipn) and quadrature pseudo noise code (Qpn) thereby generating a long in-phase PN code and a long quadrature PN code; a second multiplying means for multiplying the long in-phase pseudo PN code with a pilot channel (PI), a dedicated control channel (DC), a voice channel (FD) and a high speed data transmission channel (SM); a third multiplying means for multiplying the long quadrature PN code with a pilot channel (PI), a dedicated control channel (DC), a voice channel (FD) and a high speed data transmission channel (SM); first and second filtering means for filtering the result from the second and the third multiplying means to eliminate a noise controlling gains of filtered signals; fourth and fifth multiplying means for multiplying each of filtered signals from the first and second filtering means with a gain, and for generating first to eighth gain-controlled signals, wherein the first, the second, the seventh, and the eighth gain-controlled signals are a gain-controlled in-phase pilot channel signal, a in-phase dedicated control channel signal, a gain-controlled in-phase voice channel signal and a gain-controlled in-phase high-speed data transmission channel signal, respectively, and the third, the fourth, the fifth, and the sixth gain-controlled signals are a gain-controlled quadrature pilot channel signal, a gain-controlled quadrature dedicated control channel signal, a gain-controlled quadrature voice channel signal and a gain-controlled quadrature high-speed data transmission channel signal, respectively; a subtracting means for calculating a first result by adding the first gain-controlled signal and the second gain-controlled signal, calculating a second result by adding the fifth gain-controlled signal and the sixth gain-controlled signal, and calculating a difference between the first and the second results; an adding means for calculating a third result by adding the third gain-controlled signal and the fourth gain-controlled signal, calculating a fourth result by adding the seventh and eighth gain-controlled signals and calculating a sum of the third and the fourth results; an in-phase channel outputting means for outputting the result outputted from the subtracting means as an in-phase channel (I-channel) signal; and a quadrature channel outputting means for outputting the result outputted from the adding means as a quadrature channel (Q-channel) signal.