论文标题
关于RIS辅助双跳混合RF-UWOC系统的性能
On the Performance of RIS-Assisted Dual-Hop Mixed RF-UWOC Systems
论文作者
论文摘要
在本文中，我们研究了可重构智能表面（RIS）辅助双跳的混合射频射频无线无线光学通信（RF-UWOC）系统的性能。 RIS是一种新兴且低成本的技术，旨在提高接收信号的强度，从而提高系统性能。在考虑的系统设置中，地面源没有可靠的直接链接到给定的海洋浮标，并通过安装在建筑物上的RIS进行通信。特别是，浮标充当将信号发送到水下目的地的继电器。在这种情况下，假设在海洋浮标上的固定增益放大和前向（AF）和解释（DF）中继协议的固定增益放大（AF）和解释（DF）传递方案，则会得出中断概率（OP），平均位错误率（ABER）和平均通道容量（ACC）的分析表达式。此外，进行OP和ABER的渐近分析是为了从分析框架中获得进一步的见解。特别是，系统的多样性顺序被得出，并且显示取决于RF链接参数以及UWOC链接的检测方案。最后，证明RIS辅助系统可以有效地改善混合双跳RF-UWOC系统的性能。
In this paper, we investigate the performance of a reconfigurable intelligent surface (RIS)-assisted dual-hop mixed radio-frequency underwater wireless optical communication (RF-UWOC) system. An RIS is an emerging and low-cost technology that aims to enhance the strength of the received signal, thus improving the system performance. In the considered system setup, a ground source does not have a reliable direct link to a given marine buoy and communicates with it through an RIS installed on a building. In particular, the buoy acts as a relay that sends the signal to an underwater destination. In this context, analytical expressions for the outage probability (OP), average bit error rate (ABER), and average channel capacity (ACC) are derived assuming fixed-gain amplify-and-forward (AF) and decode-and-forward (DF) relaying protocols at the marine buoy. Moreover, asymptotic analyses of the OP and ABER are carried out in order to gain further insights from the analytical frameworks. In particular, the system diversity order is derived and it is shown to depend on the RF link parameters and on the detection schemes of the UWOC link. Finally, it is demonstrated that RIS-assisted systems can effectively improve the performance of mixed dual-hop RF-UWOC systems.
