Patent ID: 7929927
Filing Date: 2011-04-19
Classification: H03F,H04B

Abstract:
1. A method for performing adaptive pre-distortion in an electronic system that includes a transmitter and an antenna, the method performed by the transmitter and comprising the steps of: combining an input sample with a gain value to generate a pre-distorted data sample, wherein the gain value is a function of at least one gain entry stored within a gain lookup table; generating an amplified analog signal from the pre-distorted data sample; generating a feedback sample, which corresponds to a digitized representation of an antenna output signal, wherein the antenna output signal includes the amplified analog signal; generating a difference indicator, which reflects a difference between the input sample and the feedback sample; generating at least one updated gain value based on a comparison between the difference indicator and at least one previous difference indicator, wherein the at least one previous difference indicator reflects a difference between at least one previous input sample and at least one previous feedback sample; and updating the at least one gain entry within the gain lookup table with the at least one updated gain value.