POWER AMPLIFIER USING PRE-DISTORTION FOR SYSTEM HAVING VARIABLE POWER LEVELS IN UP/DOWN PATHS OF INPUT SIGNALS, METHOD FOR AMPLIFYING POWER OF THE SAME, AND RADIO COMMUNICATION SYSTEM USING THE SAME

摘要

PURPOSE: A power amplifier using pre-distortion, a method for amplifying power of the same, and a radio communication system using the same are provided to improve the performance by compensating a non-linear characteristic of an input signal by distorting the input signal before an input process. CONSTITUTION: A pre-distortion module(21) is used for pre-distorting an input signal by using a pre-distortion function. A power amplifier(27) is used for amplifying a digital-to-analog converted signal of the pre-distorted signal. A pre-distortion function production module(35) is used for producing the pre-distortion function by using an analog-to-digital converted signal of a feedback signal for the input signal, the pre-distorted signal, and an output signal of the power amplifier. The pre-distortion function production module includes an average power production part, a correction part, and a pre-distortion function production part.