The main studying of this dissertation is about cubic analog predistorer , digital predistortion linearizer based on look - up table ( lut ) technology and feedforward - predistortion linearization system . the original work and valuable results in this dissertation are as follows . 1 . a novel third - order distortion generator which can suppress the residual second - order intermodulation distortion ( imd2 ) is presented 本論文的研究分別涉及三階模擬預(yù)失真系統(tǒng)、查找表預(yù)失真系統(tǒng)和前饋預(yù)失真系統(tǒng),其中有創(chuàng)新和有價(jià)值的工作主要體現(xiàn)在以下三個(gè)方面: 1 :對于采用二極管反向平行對的三階模擬預(yù)失真系統(tǒng),本文提出了一種可以抑制駐留二階交調(diào)( imd2 )信號的新型三階擾動(dòng)器。