System and method for adaptively controlling receiver gain switch points

A wireless communications device receiver system with adaptively controllable gain switch points, the system comprising:

• a receiver having an input to accept variable strength received signals, an input to accept gain state signals, and an output to supply a signal amplified in response to the gain state signals;
• a processor including:
• a measuring circuit having an input to accept the amplified signal and an output to supply an inband power measurement;
• a controller having an output to supply a control signal responsive to determining signal quality from the inband power measurements;
• and,
• an automatic gain control (AGC) circuit having an input to accept the amplified signal, and input to accept the control signal and an output connected to the receiver for supplying gain state signals responsive to the control signal and amplified signal strength, the AGC circuit further generating a plurality of test gain states, the measuring circuit further supplying inband power measurements at the plurality of test gain states, the controller further supplying a modified control signal in response to determining the test gain state associated with the minimum inband power measurement, the AGC circuit further modifying the gain state signals in response to the modified control signal.