DIGITAL PREDISTORTION METHOD AND A DEVICE THEREOF FOR DIFFERENTIATING A MEMORY DEGREE ACCORDING TO AN INPUT LEVEL FOR IMPROVING THE CALCULATING SPEED AND CONVERGING SPEED OF A DIGITAL PREDISTORTION DEVICE

摘要

PURPOSE: A digital predistortion method and a device thereof for differentiating a memory degree according to an input level are provided to improve the performance of a power transmission system by differentiating the complexity of a digital predistortion device according to the input level of a transmission system.;CONSTITUTION: An average power measurement part(206) measures average input power of an input signal. A switch controller(208) determines a memory degree for digital predistortion according to average power. A digital distortion device implements digital predistortion for a past signal according a switch signal. An upward converter(210) converts an output signal. A power amplifier(220) amplifies the signal converted upward.;COPYRIGHT KIPO 2013;[Reference numerals] (200) Memory compensation DPD; (206) Average power measurement part; (208) Switch controller; (210) Upward converter; (220) Power amplifier; (230) Downward converter; (240) Compensation algorithm part; (AA) Input; (BB) Output; (CC,DD,EE) Switch;