Method for transmitting and receiving dm-rs in wireless communication system and apparatus therefor

A user equipment (UE) in a wireless communication system, the UE comprising:

• a wireless communication module;
• and
• a processor connected with the wireless communication module, receiving a downlink signal from an eNB,
• wherein the processor receives, from the eNB, a downlink data channel and a front loaded reference signal for demodulation of the downlink data channel by using control information included in a downlink control channel,
• wherein resource elements of symbols to which a front loaded reference signal is received are divided into two multiplexing groups or three multiplexing groups,
• wherein the downlink control channel includes information on a number of multiplexing groups, to which data are not allocated, among the multiplexing groups, and
• wherein, if the number of the multiplexing groups is three and the number of multiplexing groups to which the data are not allocated is one, the multiplexing group to which the data are not allocated is a multiplexing group having a lowest index.