APPARATUS AND METHOD FOR PERFORMING USER TERMINAL SELECTION OPERATION AND BEAM FORMING OPERATION IN WIRELESS COMMUNICATION SYSTEM SUPPORTING MIMO TECHNOLOGY

摘要

Disclosed is method for transmitting, by a signal receiving apparatus, feedback information in a wireless communication system using multiple-input multiple-output (MIMO) technology, comprising the step of transmitting, to a signal transmission apparatus, an antenna group identifier (ID) for at least one antenna group of antenna groups used by the signal transmission apparatus, and feedback information containing information related to the quality of a channel that is obtainable by the signal receiving apparatus when the at least one antenna group is used, wherein each of the antenna groups comprises at least one antenna.