说明：  数字预失真系统，功放是Wiener-Hammerstein模型，预失真是记忆多项式模型，自适应算法采用RLS-LMS混合算法不。
(Digital pre-distortion system, power amplifier is a Wiener-Hammerstein model, pre-distortion is memory polynomial model, using RLS-LMS adaptive algorithm hybrid algorithm does not.)