Method for tracking phase noise in wireless communication system and device therefor

A User Equipment for performing a phase tracking in a wireless communication system, comprising:

• a communication unit for transmitting and receiving a radio signal with an exterior;
• and
• a processor functionally connected to the communication unit,
• wherein the processor is configured to:
• receive, from a base station, a Demodulation Reference Signal (DMRS) configured according to a specific pattern through a DMRS symbol;
• receive, from the base station, a plurality of reference signals used for the phase tracking,
• wherein the plurality of reference signals is transmitted on a specific antenna port, and received through a specific resource region identical to at least one different reference signal transmitted on a different antenna port for the phase tracking;
• and
• performing the phase tracking based on at least one of the DMRS or the plurality of reference signals.