Patent ID: 8174314
Filing Date: 2012-05-08
Classification: H03F,H04B

Abstract:
1. A method, comprising: sensing at least one parameter that affects a non-linearity of a non-linear amplifier; receiving, by a retrieval module, at least one indicator that is indicative of a sensed value of the at least one parameter; storing in a memory unit at least one set of predetermined pre-distortion coefficient values that fit some anticipated or sensed working points of the non-linear amplifier; storing in another storage unit multiple other sets of predetermined pre-distortion coefficient value pre-distortion coefficient values that fit some other anticipated or sensed working points of the non-linear amplifier; selecting one set of pre-distortion coefficient values, from a group of predetermined pre-distortion coefficient value sets, based on the at least one indicators; wherein the selecting comprises selecting a selected set of predetermined pre-distortion coefficient values that is stored in the memory unit; sending the selected set of pre-distortion coefficient values to a signal processing module; pre-distorting an input signal by the signal processing module, while utilizing the selected set of pre-distortion coefficient values such as to at least partly compensate for the non-linearity of the non-linear amplifier and to provide a pre-distorted signal; and amplifying the pre-distorted signal, by the non-linear amplifier, to provide an amplified signal.