A novel wireless transmission scheme, as named the reconfigurable intelligent surface (RIS)-assisted received adaptive spatial modulation (RASM) scheme, is proposed in this paper. In this scheme, the adaptive spatial modulation (ASM)-based antennas selection works at the receiver by employing the characteristics of the RIS in each time slot, where the signal-to-noise ratio at specific selected antennas can be further enhanced with near few powers. Besides for the bits from constellation symbols, the extra bits can be mapped into the indices of receive antenna combinations and conveyed to the receiver through the ASM-based antenna-combination selection, thus providing higher spectral efficiency. To explicitly present the RASM scheme, the analytical performance of bit error rate of it is discussed in this paper. As a trade-off selection, the proposed scheme shows higher spectral efficiency and remains the satisfactory error performance. Simulation and analytical results demonstrate the better performance and exhibit more potential to apply in practical wireless communication.

翻译：本文提出了一种新型无线传输方案，即可重构智能表面辅助的接收自适应空间调制方案。在该方案中，基于自适应空间调制的天线选择机制在接收端工作，通过利用可重构智能表面在每个时隙的特性，能以极低的功率进一步增强特定选定天线处的信噪比。除了来自星座符号的比特外，额外比特可映射至接收天线组合的索引，并通过基于自适应空间调制的天线组合选择传递至接收端，从而提供更高的频谱效率。为明确阐述该方案，本文讨论了其误码率的解析性能。作为一种折中选择，所提方案在保持满意误码性能的同时实现了更高的频谱效率。仿真与解析结果证明了其更优的性能，并展现出在实际无线通信中应用的更大潜力。