Method to track analog gain step magnitudes online during operation of wireless mobile devices
AssigneeQUALCOMM Incorporated
InventorsLinbo Li, Fuyun Ling, Raghuraman Krishnamoorthi
Life of this patent
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Abstract
Systems and methods are provided for tracking and compensating for analog gain mismatches or changes in a receiver. In an embodiment, a method is provided to track analog gain step magnitudes during operation of a device. The method includes employing an error signal between an automatic gain control (AGC) output and a reference level as input to a gain step magnitude tracking component. This also includes determining at least one compensation value from the AGC output to update a nominal gain step magnitude that tracks an actual gain step magnitude.
Claims24
A method to track analog gain step magnitudes, comprising:
- employing an error signal between an automatic gain control (AGC) output and a reference level as input to a gain step magnitude tracking component when there is an analog gain state transition;
- and
- determining at least one correction value from the AGC output to update a nominal gain step magnitude that tracks an actual gain step magnitude.
An automatic gain control (AGC) module for a network system, comprising:
- a tracking component to monitor an output energy from the AGC module;
- and
- a gain step magnitude component that stores nominal gain values which are updated over time by the tracking component to account for variances of actual analog gain step magnitudes in the AGC module.
A system for determining analog gain step magnitude in a receiver, comprising:
- means for applying one or more gain step magnitudes;
- means for tracking the gain step magnitudes;
- and
- means for adjusting the gain step magnitude estimates to account for component mismatches and shifts over time.
A machine readable medium having machine executable instructions stored thereon, comprising:
- tracking an output energy from an automatic gain control (AGC) module;
- determining an error signal from the output energy;
- and
- applying a compensation value to a subset of gain step magnitude estimates to facilitate adjustments to the AGC module overtime.
A wireless communications processor, comprising:
- a memory that includes a tracking component to determine a mismatch signal for an automatic gain control module;
- and
- a processor that determines at least one gain step magnitude adjustment from the tracking component and in view of the mismatch signal.
Dependencies are inferred from the claim text.