APPARATUS AND METHOD FOR STATE MONITORING OF RF FRONT-END IN WIRELESS COMMUNICATION SYSTEM

摘要

An RF(Radio Frequency) front-end state confirming device in a wireless communication system and a method therefor are provided to monitor an operated state of an RF front-end by using gain changes of a receiving device, thereby supporting stable operation of the wireless communication system as avoiding performance deterioration of the receiving device. A thermal noise calculator(401) calculates size of a thermal noise signal down-modulated into a baseband from a passing band and a suppressing band in a section where a receiving signal does not exist in a receiving device. If the receiving signal exists, a receiving state confirmer(403) calculates power density of the thermal noise signal by using the thermal noise signal in the passing band and the suppressing band received from a modem, and confirms an operated state of an RF front-end by comparing the power density of the thermal noise signal in the passing band and in the suppressing band.