【摘要】 为了更好地补偿功率放大器的非线性,提出一种新型多步迭代算法来求取数字预失真器。新算法结合了多步迭代算法与频域削峰技术,使功放在保证工作效率的同时更大程度提高其线性度。实验结果显示,该方法较传统的线性化技术有明显优势,功放输出信号的ACPR可改善20.66 dB。更多还原

【Abstract】 This paper proposes a new multiple-step iterative digital pre-distorter to compensate the nonlinearity caused by power amplifiers. The new method can be considered as a joint multiple-step iterative digital pre-distortion and crest-factor reduction,which gives substantial improvement in both efficiency and linearity. Measurement results show that the proposed method does better on enhancing digital pre-distortion and the ACPR of the output signals can be improved by 20.66 dB.更多还原