Patent ID: 8243707

Claim:
A method of forming a beam on a mobile terminal in a base station, comprising: receiving channel quality information and a codeword index for quantization from a plurality of mobile terminals that have received pilot signals for channel estimation, and selecting one mobile terminal on the basis of the channel quality information and the codeword index; collecting data to be transmitted to the selected mobile terminal, and selecting a beam formation code for the collected data; and generating transmission data on the basis of the collected data and the selected beam formation code and transmitting the transmission data to a specific mobile terminal, wherein the transmission data is generated in the following form: y k ⁡ ( t ) = h k T ⁢ U ⁡ ( t ) ⁢ c i * k * ⁢ d k * ⁡ ( t ) + n k ⁡ ( t ) , where y k (t) indicates a data signal received by a k-th specific mobile terminal in a data transmission period, and n k (t) indicates white noise and an interference signal.