无线通信中空间调制MIMO技术的研究现状与展望

Research Status and Prospect for Spatial Modulated MIMO Technique in Wireless Communications

空间调制(Spatial modulation,SM)技术借助于天线序号"隐形"地传输信息,能够获得高数据传输速率,而且可有效克服信道间的干扰和同步问题,降低系统的实现复杂度。多输入多输出(Multiple input multiple output,MIMO)技术,能够极大地提高无线通信系统的容量和频谱效率。为了满足无线通信系统高质量和高速率的要求,将SM和MIMO技术有效结合,SM-MIMO技术应运而生,成为近年来无线通信领域研究的热点方向。本文从基本原理和性能分析两方面介绍了SM-MIMO技术及其研究现状,并且探讨了SM-MIMO技术的应用前景。同时也对近年来国内外研究团队在SM-MIMO方面的研究成果进行了综述和概括,最后对该领域的未来研究工作进行了分析和展望。

By using the antenna index to transmit information invisibly, spatial modulation （SM） tech- nique can obtain high data transmission rate, and overcome the inter channel interference and synchroni- zation problems effectively, as well as reduce the implementation complexity. Multiple input multiple output （MIMO） technique can significantly improve the capacity and spectrum efficiency of wireless corn munication system. To satisfy the high quality and data rate requirements of communication system, SM-MIMO technique emerges by combining SM and MIMO techniques and thus becomes the main re search hotspot in the field of wireless communication. The paper summarizes the current research advancement of SM-MIMO from the basic principles and performance analysis. The prospect of SM MIMO in application is also addressed. Finally, both the current achievement and the further research prospect in this field are discussed and summarized.