Patent ID: 7676208
Filing Date: 2010-03-09
Classification: H04W

Abstract:
1. An automatic gain control device for automatically controlling a gain of a plurality of first signals input through a plurality of antennas in a wireless communication system, the automatic gain control device comprising: a radio frequency receiver for receiving the first signals through the antennas, respectively controlling gains of the first signals, and outputting the first signals having the controlled gain as a plurality of second signals through a plurality of analog to digital converters (ADCs); a signal saturation detecting unit for outputting a saturation index determination value when the number of the first signals that are greater than a threshold value is found to be greater than a predetermined number; and a gain controlling unit for comparing power values of the first signals to detect a greatest power value from among the first signals and configured to output a gain value determined based on a detected greatest power value and the saturation index determination value to the radio frequency receiver,