An operation method of a wireless communication device includes receiving initial reference signals based on sweeping of a first beam pair subset, the initial reference signals including first and second reference signals received via first and second reception beams, the first reception beams and the second reception beams being included in the first beam pair subset and having different polarizations, measuring first received powers of the first reference signals and second received powers of the second reference signals, determining a first beam pair for receiving first data based on the first received powers and the second received powers, updating the first beam pair subset based on the first received powers or the second received powers, determining a second beam pair for receiving second data based on received powers of new reference signals for the updated beam pair subset, and receiving the second data based on the second beam pair.