WEIGHTED MEMORY POLYNOMIAL METHOD AND SYSTEM FOR POWER AMPLIFIERS PREDISTORTION

摘要

A system and method for linearizing a power amplifier using digital predistortion technique is provided including processing circuitry, the processing circuitry configured to apply a digital predistortion function based on a weighted static polynomial function, a weighted dynamic polynomial function and a threshold parameter which splits the nonlinear transfer characteristics of the device under test into a region where the static nonlinearity predominates and a region where the dynamic distortions predominate.

主权项

1. A system for linearizing a power amplifier through digital predistortion, comprising processing circuitry configured to:
obtain an input signal sample that depends on an input signal to the power amplifier; predistort the input signal sample using a static weight function to generate a first intermediate predistorted signal sample; predistort the same input signal sample using a dynamic weight function to generate a second intermediate predistorted signal sample; combine additively the first intermediate predistorted signal sample and the second intermediate predistorted signal sample together to obtain an output signal sample of the predistorter.