A method to track analog gain step magnitudes online during operation of wireless mobile devices

Provides for tracking in receiver and compensation simulation gain unbalance or a exchange system and method. In one embodiment, provides a tracking simulation gain stride and method during the working. A method and a two-stage comprising an automatic gain control and signal between and output to the input of obtaining stride width tracking module. The further - comprising according to the AGC output by at least compensation value to updating tracking leads gain stride and rated gain stride thereof.