METHOD FOR EFFICIENT TRANSMISSION OF PRECODED REFERECE SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREOF

摘要

PURPOSE: A method and an apparatus for transmitting pre-coded reference signal in order to prevent load of a DCI format are provided to transmit the pre-coded reference signal without increasing CDM(Code Division Multiplexing) resource. CONSTITUTION: A pre-coding module(440) pre-codes a signal mapped to a layer according to a pre-coding vector. Resource element mapping modules multiplexes the pre-coded signal. The resource element mapping modules map the multiplexed signals to the resource elements. A transmission module transmits signals mapped to the resource elements through a multiple antenna. A processor is connected to a layer mapping module, the pre-coding module, the resource element mapping module and the transmission module.