METHOD FOR ESTIMATING CHANNEL STATE AND CONTROLLING TRANSMISSION/RECEPTION SIGNAL BY MULTIPLE ANTENNA DEVICE, AND MULTIPLE ANTENNA DEVICE USING SAME

摘要

A multiple antenna device for estimating a channel state and controlling a transmission/reception signal comprises: a signal transmission unit for transmitting a first signal using the multiple antenna; a signal reception unit for receiving a second signal using the multiple antenna on the basis of the transmitted first signal; a signal transfer unit for receiving a third signal input to the signal transmission unit and providing the third signal to the signal reception unit; and a control unit for estimating a channel state of the multiple antenna on the basis of the second signal and third signal that are acquired from the signal reception unit, and controlling transmission of a signal and reception of a signal through the multiple antenna according to the estimated channel state.