Patent ID: 8989251
Filing Date: 2015-03-24
Classification: H04B

Abstract:
1. A compensator configured to generate a first compensation signal to compensate for nonlinear echo in an output of a current source, wherein the nonlinear echo is a result of transitioning the current source between an ON state and an OFF state, the compensator comprising: a driving circuit configured to receive a first signal that is based on the output of the current source, wherein the first signal comprises the nonlinear echo; a weighting circuit configured to generate a second signal based on weighted versions of the first signal; a function circuit configured to, based on the second signal, (i) update each of two functions, and (ii) select a first function of the two updated functions, wherein the driving circuit is configured to generate a driving signal based on the first function selected by the function circuit; and a compensating circuit configured to generate the first compensation signal based on the driving signal to compensate for the nonlinear echo provided by the output of the current source.