Patent ID: 9210009
Filing Date: 2015-12-08
Classification: H03F,H04B,H04L

Abstract:
1. A predistortion linearized communication system, comprising: an input configured to receive a digital communication signal; a predistorter coupled to the input, the predistorter configured to output a predistorted signal; an up-converter coupled to the predistorter configured to receive the predistorted signal and output an up-converted digital signal; a filter group delay predistorter coupled to the up-converter and directly connected to crest factor and digital predistortion circuitry, wherein the filter group delay predistorter is configured to provide an inverse group delay in the up-converted digital signal; a digital to analog convertor coupled to the crest factor and digital predistortion circuitry-configured to receive an output from the crest factor and digital predistortion circuitry to produce an analog signal; and an output filter coupled to receive a Radio Frequency (RF) signal representation of the analog signal configured to output a filtered signal for transmission,