论文标题
时空块编码可重构的智能表面基于智能的接收空间调制
Space-Time Block Coded Reconfigurable Intelligent Surface-Based Received Spatial Modulation
论文作者
论文摘要
可重新配置的智能表面（RIS）结构通过根据传输的通道状态适应相调节，以提高接收器的信号质量来反映事件信号。此外，由于提供更好的吞吐量，低成本实现和良好的错误性能，空间调制技术（SM）技术可能是未来节能无线通信的候选者。同样，就多样性增益和简化的ML检测而言，Alamouti的时空块编码（ASBC）是重要的空间和时间编码技术。在本文中，我们提出了使用ASBC（即RIS-RSM-ASBC）的RIS辅助接收的空间调制方案（RSM）方案。所谓的RIS在拟议的系统模型中由两个部分分配。每个人都被用作接入点（AP）来传输其Alamouti编码的信息，同时将被动信号反映给所选接收的天线。最佳最大似然（ML）检测器是为建议的RIS-RSM-ASBC方案而设计的。进行广泛的计算机模拟以证实理论推导。结果表明，RIS-RSM-ASBC系统高度可靠，并且与常规RIS辅助发送SM（RIS-TSM）相反，可提高数据速率方案。
Reconfigurable intelligent surface (RIS) structures reflect the incident signals by adjusting phase adaptively according to the channel condition where doing transmission in order to increase signal quality at the receiver. Besides, the spatial modulation (SM) technique is a possible candidate for future energy-efficient wireless communications due to providing better throughput, low-cost implementation and good error performance. Also, Alamouti's space-time block coding (ASBC) is an important space and time coding technique in terms of diversity gain and simplified ML detection. In this paper, we proposed the RIS assisted received spatial modulation (RSM) scheme with ASBC, namely RIS-RSM-ASBC. The termed RIS is portioned by two parts in the proposed system model. Each one is utilized as an access point (AP) to transmit its Alamouti coded information while reflecting passive signals to the selected received antenna. The optimal maximum likelihood (ML) detector is designed for the proposed RIS-RSM-ASBC scheme. Extensive computer simulations are conducted to corroborate theoretical derivations. Results show that RIS-RSM-ASBC system is highly reliable and provides data rate enhancement in contrast to conventional RIS assisted transmit SM (RIS-TSM), RIS assisted transmit quadrature SM (RIS-TQSM), RIS assisted received SM (RIS-RSM), RIS assisted transmit space shift keying with ASBC (RIS-TSSK-ASBC) and RIS-TSSK-VBLAST schemes.
