Patent ID: 7145863

Claim:
A transmission method, comprising the steps of: generating a complex signal by IQ multiplexing transmission data for a data channel and control data for a control channel; and modulating the complex signal generated in the IQ multiplexing and transmitting the modulated complex signal, wherein when control data for a control channel are added, the control data to be added are assigned to the I axis or the Q axis according to whether a set number for the data channel is an odd number or an even number in the IQ multiplexing, the step of generating a complex signal by IQ multiplexing comprises performing a spread spectrum operation on the transmission data and the control data, and the step of performing a spread spectrum operation comprises multiplying data for the data channel by spreading codes for use in channel separation; multiplying control data for the control channel by a spreading code for use in channel separation; and multiplying data for an exclusive control channel for high speed downlink packet data by a spreading code for use in channel separation.