文件名称：Spatial Modulation Assisted Multi-Antenna Non-Orthogonal Multiple Access
文件大小：337KB
文件格式：PDF
更新时间：2022-05-13 07:23:09
mimo
Multi-antenna non-orthogonal multiple access (NOMA) is a promising technique to significantly improve spectral efficiency and support massive access, which has received considerable interest from academia and industry. This article first briefly introduces the basic idea of conventional multi-antenna NOMA technique, and then discusses the key limitations, namely, the high complexity of successive interference cancellation and the lack of fairness between a user with a strong channel gain and a user with a weak channel gain. To address these problems, this article proposes a novel spatial modulation assisted multi-antenna NOMA technique, which avoids the use of successive interference cancellation and is able to completely cancel intra-cluster interference. Furthermore, simulation results are provided to validate the effectiveness of the proposed novel technique compared to the conventional multi-antenna NOMA. Finally, this article points out the key challenges and sheds light on the future research directions of the spatial modulation assisted multi-antenna NOMA technique.