SM-MIMO系统可以极大的提高系统容量,在下一代移动通信系统中有着广阔的应用前景;但SM-MIMO系统对信道病态矩阵非常敏感。作为一种优化手段,有限速率反馈预编码技术可以大大提高MIMO系统对衰落信道的鲁棒性,另外,自适应调制编码技术也可以使系统性能和吞吐量得到很好改善。预编码技术和自适应调制编码技术的应用都是建立在对信道信息的获取上,因此,文中在SM-MIMO系统融合了这两种技术,仿真结果表明SM-MIMO系统性能得以明显提高。 The SM-MIMO system can greatly improve the system capacity and has broad application prospects in the next generation of mobile communication systems; however, the SM-MIMO system is very sensitive to the channel morbidity matrix. As an optimization method, the limited rate feedback precoding technique can greatly improve the robustness of the MIMO system to fading channels. In addition, the adaptive modulation and coding technique can also improve the system performance and throughput well. The application of both pre-coding and adaptive modulation and coding techniques is based on the acquisition of channel information. Therefore, the SM-MIMO system combines these two techniques, and the simulation results show that the performance of SM-MIMO system can be significantly improved.