Reduce the dimension of the predistortion model coefficients by lasso regression

This paper proposes a method of using lasso regression to estimate the parameters of the predistortion model. Lasso regression can quickly and effectively extract important variables from many variables to simplify the model. In this paper, ten-fold cross-validation is used to confirm the method of lasso regression regularization coefficient. Experiments show that the model coefficients are reduced from the original 125 to 28, a 78% reduction, which can reduce the computational complexity.