METHOD FOR RECEIVING RADIO SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR THE SAME

摘要

PURPOSE: A wireless signal reception method in a wireless communication system and a device thereof are provided to reduce noise by arranging an RSSI(Received Signal Strength Indicator) and a filter at an accurate position. CONSTITUTION: A LAN(Local Area Network)(311) reduces a noise part of a wireless signal and receives a wireless signal. A first VGA(Variable Gain Amplifier)(312) controls a signal size of a base band on an output signal of an LNA(Low Noise Amplifier). A first RSSI(313) measures the size of an output signal of the first VGA. A first mixer coverts the output signal of a first signal processing unit into IF(Intermediate Frequency). A band pass filter(321) reduces a specific frequency band of an output signal of the first mixer. A second VGA(322) controls the size of an output signal of a channel selection filter. A second RSSI(323) measures the output signal size of the second VGA. A second mixer converts the output signal of the second signal processing unit. [Reference numerals] (AA) Analog; (BB) Digital