Volterra digital pre-distortion parameter identification method based on support set correction approximate message passing

The invention provides a Volterra digital pre-distortion parameter identification method based on support set correction approximate message passing. The Volterra digital pre-distortion parameter identification method comprises the following steps: S1, generating a Volterra measurement matrix according to DPD model information; s2, carrying out normalization processing of a measurement matrix; s3,correcting the threshold shrinkage function and setting target iteration times and target precision; s4, performing iterative computation on model coefficients and residual errors, and extracting a coefficient support set; and S5, carrying out support set correction processing to improve the AMP estimation precision. Experiments prove that the SSR-AMP method provided by the invention has good feasibility and effectiveness for parameter identification of the Volterra digital predistorter. 本发明提出支撑集修正近似消息传递的Volterra数字预失真参数辨识方法，包含以下步骤：S1，根据DPD模型信息生成Volterra测量矩阵；S2，测量矩阵归一化处理；S3，修正阈值收缩函数并设置目标迭代次数及目标精度；S4，模型系数与残差迭代计算，提取系数支撑