Patent ID: 8320865

Claim:
An Automatic Gain Control (AGC) control unit for Noise change output signalling, wherein the AGC control unit being adapted to initiate a changed gain setting on a receiver when the level of an AGC control unit input signal received by the unit has been below a first threshold level or above a second threshold level during a detection interval, where the receiver is arranged to produce at least one AGC output signal; the AGC control unit being adapted to produce a Noise change output signal, where the at least one AGC output signal is adjusted on the basis of the noise change output signal, so that an adjusted AGC output signal is produced; an Adjustment Unit (AU) for adjustment of the at least one AGC output signal, wherein the AU is adapted to receive the Noise change output signal sent by the AGC control unit, the AU is adapted to adjust the signal gain of the at least one AGC output signal on the basis of the received Noise change output signal, so that the adjusted AGC output signal is produced, wherein the AU is adapted to adjust the signal gain to minus twice the noise rise in the AGC control unit input signal, caused by the changed attenuation.