To compensate the ISI of 16APSK over satellite channels, equalization is needed before demodulation and decoding. Conventional receivers execute equalization, demodulation and decoding independently. This paper applies Wiener equalization to BICM satellite system and proposes an associated processing algorithm for 16APSK over memory non-linearity satellite channels. The algorithm join soft-decision feedback decoding, iterative Wiener equalization and weighting likelihood information together, which deeply excavates the inherent relevance between information. Therefore, an associated processing among equalization, demodulation and decoding is achieved to compensate the nonlinear distortion of 16APSK. Simulation results show that the algorithm is validity and gets better performance.