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作为一种多天线传输技术,空间调制(SM)近年来发展迅速,与传统的MIMO技术相比,能有效地避免信道间干扰(ICI)和多天线发射的同步问题。分析了空间调制技术的基本原理,并对天线接收算法进行了分类比较。通过仿真比较了SM与垂直贝尔实验室分层空时结构(V-BLAST),证明了SM性能上的优势,同时分析了SM对独立信道条件的依赖性。最后,空间调制研究热点以及一些亟待解决的问题得到了深入的讨论。
As a multi-antenna transmission technology, spatial modulation (SM) has developed rapidly in recent years. Compared with the traditional MIMO technology, SM can effectively avoid the inter-channel interference (ICI) and multi-antenna transmission synchronization problems. The basic principle of spatial modulation technology is analyzed, and the antenna receiving algorithm is classified and compared. Simulations were performed to compare the hierarchical space-time structure (V-BLAST) between SM and Vertical Bell Labs, which demonstrated the advantages of SM performance and analyzed the dependency of SM on independent channel conditions. Finally, the hot issues of space modulation research and some urgent problems have been discussed in depth.