Patent ID: 8478210
Filing Date: 2013-07-02
Classification: H03F

Abstract:
1. An apparatus comprising: baseband circuitry that receives a baseband signal, wherein the baseband circuitry includes a operational mode circuitry to determine an operation mode metric for the baseband signal; and a digital predistortion (DPD) module that receives an output from the baseband circuitry and to receive the operational mode metric, wherein the DPD module selects one of a plurality of predistortions based at least in part on the operational mode metric, and wherein the DPD module applies a selected predistortion to the output from the baseband circuitry so as to predistort the output from the baseband circuitry to compensate for nonlinearities in a power amplifier having a plurality of operating modes, and wherein the selected predistotion is associated with at least one of the operating modes of the power amplifier that corresponds to the operational mode metric, wherein the baseband circuitry further comprises: wherein the DPD module further comprises a controller that receives the output from the baseband circuitry, wherein the controller includes: a lookup table (LUT) that stores the plurality of predistortions; and an equalizer, wherein the operational mode circuitry further comprises a power meter, and wherein the operational mode metric further comprises output power, and wherein the DPD module further comprises: