公开(公告)号：EP1787398A4

公开(公告)日：2009-06-03

申请号：EP05798668

申请日：2005-09-08

Applicant: CISCO TECH INC

Inventor： JIN HANG ,  GRABNER JOHN ,  HUANG JUN ,  HO DANIEL WEE TECK

IPC: H04B1/06 ,  H04B7/00

CPC classification number: H03G3/3052 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/706

Abstract: The present invention discloses a proactive gain control system for a communications receiver. The proactive gain control system includes a variable gain module for outputting an output signal in response to an input signal. A detector detects the output signal and outputs a detection signal representing a signal strength of the output signal. A traffic monitor monitors the output signal and outputs a traffic profile signal indicating that a traffic profile for the input signal will change. A gain computing module outputs a gain adjustment value in response to the detection signal and the traffic profile signal. A gain control module outputs a gain control signal to the variable gain module, which determines a gain between the input and output signals, in response to the gain adjustment value.