APPARATUS AND METHOD FOR COMPENSATING LONG TIM MEMORY EFFECT OF POWER AMPLIFIER IN A WIRELESS COMMUNICATION SYSTEM

摘要

The present invention relates to a pre-distortion device for linearizing the nonlinear distortion characteristics of a high output power amplifier used in a wireless communication system, and a memory effect compensation method of the method. A memory effect compensating device of a predistorter compensating device, comprising: a power average calculating a power average of an error signal of a predistorter, and calculating a coefficient of a predetermined compensation polynomial for thermal memory effect compensation using the power average; And a gain determiner for determining a gain value of the error signal by multiplying the calculated coefficient by a power of the power average, and a compensator for generating a compensation signal for a thermal memory effect using the determined gain value. It is characterized by.;Memory effect, thermal memory effect, long time memory effect, compensation, predistorter, power amplifier