1. A method of determining a corrective predistortion function, comprising the steps of: determining a history of estimations of a plurality of corrective predistortion functions that each correspond to a respective signal characteristic; determining a feature of each of the plurality of corrective predistortion functions from the history; and selecting one of the corrective predistortion functions for a next estimation based on the selected corrective predistortion function having the determined feature that satisfies a selected criteria.