Digital pre-distortion system and method for complementary spectrum segmentation

• Main Author: XIAO YUEYU
• Format: Patent
• Language: Chinese; English
• Published: 31.10.2023
• Subjects: AMPLIFIERS; BASIC ELECTRONIC CIRCUITRY; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention relates to a digital pre-distortion method and system for complementary spectrum segmentation, and the system comprises N paths of pre-distorters which are used for carrying out the digital pre-distortion of an input signal; the N paths of complementary frequency spectrum segmentation filters are used for filtering output signals of the N paths of predistorters in one-to-one correspondence with the N paths of complementary frequency spectrum segmentation filters; and the combiner is used for combining the output signals of the N paths of complementary frequency spectrum segmentation filters to obtain a combined digital pre-distortion signal. According to the invention, better digital pre-distortion compensation can be carried out on the power amplifier with a strong nonlinear memory effect, so that the linearity index of an output signal of the power amplifier is improved. 本发明涉及一种互补频谱分割的数字预失真方法与系统，包括：N路预失真器，用于对输入信号进行数字预失真；N路互补频谱分割滤波器，用于对与之一一对应的N路预失真器的输出信号进行滤波；合路器，用于将N路互补频谱分割滤波器的输出信号进行合路，得到合路数字预失