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US 2013/0089169 A1Published application
Low-Power and Low-Cost Adaptive Self-Linearization System with Fast Convergence
AssigneeNetLogic Microsystems, Inc.
InventorRoy G. Batruni
Life of this patent
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Abstract
A signal processing method includes inputting a digital signal, providing a plurality of coefficients; and determining an output. The output is approximately equal to an aggregate of a plurality of linear reference components, and each of the linear reference components is approximately equal to an aggregate of a corresponding set of digital signal samples that is scaled by the plurality of coefficients.
Claims20
A system, comprising:
- a separation block configured to separate a signal into a reference signal component and a target signal component;
- a digital signal processor (DSP) configured to:
- filter the reference signal component according to a plurality of filter coefficients to provide an output signal that is substantially similar to the target signal component;
- and
- adjust the plurality of filter coefficients to drive a feedback signal to a predetermined level;
- and
- a combiner configured to subtract the output signal and the target signal component to provide the feedback signal.
4 more elements
A system, comprising:
- a separation block configured to provide a reference signal component and a target signal component of a signal, wherein the reference signal component and the target signal component are related by a first transfer function;
- and
- a digital signal processor (DSP) configured to filter the reference signal component according to a second transfer function to provide a filtered version of the reference signal component;
- wherein the DSP is further configured to adjust the second transfer function to substantially match the first transfer function by adjusting the second transfer function such that the target signal component and the filtered version of the reference signal component are substantially equal.
1 more element
In a wireless receiver, a method comprising:
- filtering an input signal to provide a reference signal component of the input signal;
- subtracting the reference signal component from the input signal to provide a target signal component of the input signal;
- filtering the reference signal component according to a plurality of filter coefficients to provide an output signal;
- subtracting the output signal from the target signal component to provide an error signal;
- and
- adjusting the plurality of filter coefficients to drive the error signal to a predetermined value.
3 more elements
Dependencies are inferred from the claim text.