Patent ID: 9190972
Filing Date: 2015-11-17
Classification: H03F,H03G,H03M,H04L

Abstract:
1. An Automatic Gain Control, AGC, device, comprising: a variable gain adjusting unit, for adjusting an input signal by a variable gain and outputting an adjustment result; an analog-digital converting unit, for performing analog-digital conversion on the adjustment result to obtain an analog-digital conversion result; and a gain determining unit, for determining a distribution status over a predetermined period of time of a maximum or a minimum of the analog-digital conversion result, comparing the distribution status with a first distribution condition, and if the distribution status meets the first distribution condition, then keeping the variable gain corresponding to the distribution status unchanged, or if the distribution status does not meet the first distribution condition, then changing the variable gain corresponding to the distribution status and determining newly a distribution status until the newly determined distribution status meets a second distribution condition which is the same as or stricter than the first distribution condition; wherein the distribution status is an occurrence probability over the predetermined period of time of the minimum of the analog-digital conversion result, or an occurrence probability over the predetermined period of time of the maximum of the analog-digital conversion result.