Power amplifier is essential component in communication systems and it’s inherently nonlinear. This essay mainly investigate a based on Hammerstein predistorter , a memory polynomial predistorter. The Hammerstein predistorter is designed spec

Quadrature ampliltude modulation has high spectral efficiency but is highly sensitive to power amplifier nonlinearities. It is shown that an adaptive predistorter usig polynomial amplitude and phase predistortion functions can be used to lineariz