PIECEWISE POLYNOMIAL PREDISTORTION METHOD AND APPARATUS FOR COMPENSATING NONLINEAR DISTORTION OF HIGH POWER AMPLIFIER

摘要

1. the art that the invention defined in the claims; The present invention will on the predistortion apparatus of the pre-distortion method and using the same high power amplifier using the piecewise polynomial differential.; 2. The invention attempts to solve the technical challenges; The present invention is intended to provide a pre-distortion unit of the high-power amplifier pre-distortion method using a piecewise polynomial differential including a piecewise polynomial function in other areas of the input signal, and using the same.; 3. Resolution of the subject matter of the invention,; The present invention, in, pre-distortion of the amplitude for the pre-distorting the input signal amplitude based on the first polynomial coefficient selected in accordance with the amplitude of the input signal amplitude to provide an amplitude signal pre-distortion means for polynomial predistortion device; Prior to providing the distorted phase signal to pre-distort the input phase signal based on the selected second polynomial coefficient and the pre-distorted amplitude depending on the amplitude of the pre-distorted phase signal amplitude predistortion means; Power amplifying means for amplifying the pre-distorted phase signal, the amplitude signal and the pre-distortion to output the amplified amplitude signal and the amplification phase signal; First adapting means for updating the first polynomial coefficients on the basis of the pre-distorted amplitude signal and the amplified amplitude signal; And including a second adaptation means for updating said second polynomial coefficient, based on the pre-distortion of the amplitude signal, the phase pre-distortion signal and the amplified phase signal.; 4. An important use of the invention,; The invention yiyongdoem like HPA.