自适应调制的预编码SM-MIMO性能分析

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。

Performance Analysis of AMC-Based Preceded SM-MIMO System

SM-MIMO system could greatly improve the is very promising in the next generation wireless systems. throughput of the wireless communication system, and As a optimization technology, it could help the SM-MIMO system improve the resilience to channel variety. In addition, the exploitation of adaptive modulation and coding（AMC） technology could also promote the performance of SM-MIMO system. The applications of precoding and AMC technologies are all based on the acquisition of CSI （channel state information）. Simulation results show that the limited feedback technology in combination with the adaptive modulation could significantly enhance the performance of SM-MIMO system.