In wireless feedback control systems, control quality deteriorates due to wireless channel error and packet loss. Therefore, suppression of the deterioration of control quality is an important problem in wireless feedback control. As techniques to improve the control quality, there are techniques such as error correction coding to reduce wireless channel error in the communication layer and predictive control to compensate packet loss in the control layer. The purpose of this study is improvement of control quality by a cross-layer combination of predictive control and error correction coding. We propose a method to combine predictive control information redundancy and error correction code redundancy, and clarify the characteristics of their combinations by comparison of the control quality by computer simulation. We show that the proposed method improves tolerance to channel error compared to the single use of either of them.