CAJ | 학술논문

论文针对功率放大器的非线性失真问题，分别以无记忆功率放大器和有记忆功率放大器输入/输出数据为基础，通过对给定数据进行拟合处理，建立了放大器的非线性多项式数学模型，并采用归一化均方误差、误差矢量幅度衡量模型的效果。针对放大器的非线性特性，采用前向串级补偿方法，得到预失真处理器的数学模型，对系统进行输入输出模拟，得到补偿后的系统输入/输出效果。最后针对信道干扰问题，通过相邻信道功率比的指标来评价所建模型对相邻信道的干扰程度分析。
논문침대공솔방대기적비선성실진문제，분별이무기억공솔방대기화유기억공솔방대기수입/수출수거위기출，통과대급정수거진행의합처리，건립료방대기적비선성다항식수학모형，병채용귀일화균방오차、오차시량폭도형량모형적효과。침대방대기적비선성특성，채용전향천급보상방법，득도예실진처리기적수학모형，대계통진행수입수출모의，득도보상후적계통수입/수출효과。최후침대신도간우문제，통과상린신도공솔비적지표래평개소건모형대상린신도적간우정도분석。
Aiming at the nonlinear distortion of power amplifier, based on the input/output data of memoryless power amplifier and memory power amplifier, this paper proposes a nonlinear polynomial mathematical model of the amplifier by fitting the data to a given treatment and using normalized mean square error, error vector magnitude to measure the effect of the model. Considering the nonlinear characteristics of the amplifier, the paper puts forward the mathematical model of pre-distortion processor by using the forward cascade compensation method, and simulates the input and output of the system to get the input/output effects of compensated system. Finally, aiming at the channel interference problem, this paper evaluates the extent of the proposed model for adjacent channel interference analysis through adjacent channel power ratio of indicators.