Reduced complexity nonlinear filters for analog-to-digital converter linearization

1. A method of obtaining a compensated digital signal from an input analog signal, comprising:

converting the input analog signal to an uncompensated digital signal;

inputting the uncompensated digital signal to a distortion model, wherein the distortion model has a transfer function that includes a nonlinear coefficient;

generating a modeled distortion signal; and

generating the compensated digital signal based at least in part on the uncompensated digital signal and the modeled distortion signal.

2. A method of obtaining a compensated digital signal from an input analog signal, comprising:

converting the input analog signal to an uncompensated digital signal;

sampling the input analog signal using a fractional phase sampling clock to obtain a fractional phase sample;

inputting the uncompensated digital signal and the fractional phase sample to a distortion model;

generating a modeled distortion signal; and

generating the compensated digital signal based at least in part on the uncompensated digital signal and the modeled distortion signal.

3. A method of obtaining a compensated digital signal from an input analog signal, comprising:

converting the input analog signal to an uncompensated digital signal;

generating a derivative of the input analog signal;

inputting the uncompensated digital signal and the derivative to a distortion model;

generating a modeled distortion signal;

generating the compensated digital signal using the uncompensated digital signal and the modeled distortion signal.

4. A distortion compensating analog to digital converter (ADC), comprising:

an uncompensated ADC configured to convert an input analog signal to an uncompensated digital signal;

a compensation module coupled to the uncompensated ADC, wherein the compensation module has a transfer function that includes a nonlinear coefficient, and is configure to:

receive the uncompensated digital signal;

generate a modeled distortion signal; and

generate the compensated digital signal based at least in part on the uncompensated digital signal and the modeled distortion signal.

5. A distortion compensating analog to digital converter (ADC), comprising:

an uncompensated ADC configured to convert an input analog signal to an uncompensated digital signal;

a compensation module coupled to the uncompensated ADC, wherein the compensation module is configure to:

sample the input analog signal using a fractional phase sampling clock to obtain a fractional phase sample;

receive the uncompensated digital signal;

generate a modeled distortion signal at least in part using the fractional phase sample; and

generate the compensated digital signal based at least in part on the uncompensated digital signal and the modeled distortion signal.

6. A distortion compensating analog to digital converter (ADC), comprising:

an uncompensated ADC configured to convert an input analog signal to an uncompensated digital signal;

a compensation module coupled to the uncompensated ADC, wherein the compensation module is configure to:

receive the uncompensated digital signal;

generate a derivative of the input analog signal;

generate a modeled distortion signal based at least in part on the derivative; and

generate the compensated digital signal based at least in part on the uncompensated digital signal and the modeled distortion signal.