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On the Performance of RIS-Assisted Dual-Hop Mixed RF-UWOC Systems
arXiv - CS - Performance Pub Date : 2020-11-18 , DOI: arxiv-2011.09060 Sai Li, Liang Yang, Daniel Benevides da Costa, Marco Di Renzo, and Mohamed-Slim Alouini
arXiv - CS - Performance Pub Date : 2020-11-18 , DOI: arxiv-2011.09060 Sai Li, Liang Yang, Daniel Benevides da Costa, Marco Di Renzo, and Mohamed-Slim Alouini
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.
中文翻译:
关于RIS辅助双跳混合RF-UWOC系统的性能
在本文中,我们研究了可重构智能表面 (RIS) 辅助双跳混合射频水下无线光通信 (RF-UWOC) 系统的性能。RIS 是一种新兴的低成本技术,旨在增强接收信号的强度,从而提高系统性能。在所考虑的系统设置中,地源与给定的海洋浮标没有可靠的直接链接,而是通过安装在建筑物上的 RIS 与其通信。特别是,浮标充当将信号发送到水下目的地的中继器。在这种情况下,中断概率 (OP)、平均误码率 (ABER)、假设在海洋浮标处采用固定增益放大转发 (AF) 和解码转发 (DF) 中继协议,推导出平均信道容量 (ACC)。此外,还对 OP 和 ABER 进行了渐近分析,以便从分析框架中获得进一步的见解。特别是,系统分集阶数被推导出来,它取决于射频链路参数和 UWOC 链路的检测方案。最后,证明了RIS辅助系统可以有效提高混合双跳RF-UWOC系统的性能。
更新日期:2020-11-19
中文翻译:
关于RIS辅助双跳混合RF-UWOC系统的性能
在本文中,我们研究了可重构智能表面 (RIS) 辅助双跳混合射频水下无线光通信 (RF-UWOC) 系统的性能。RIS 是一种新兴的低成本技术,旨在增强接收信号的强度,从而提高系统性能。在所考虑的系统设置中,地源与给定的海洋浮标没有可靠的直接链接,而是通过安装在建筑物上的 RIS 与其通信。特别是,浮标充当将信号发送到水下目的地的中继器。在这种情况下,中断概率 (OP)、平均误码率 (ABER)、假设在海洋浮标处采用固定增益放大转发 (AF) 和解码转发 (DF) 中继协议,推导出平均信道容量 (ACC)。此外,还对 OP 和 ABER 进行了渐近分析,以便从分析框架中获得进一步的见解。特别是,系统分集阶数被推导出来,它取决于射频链路参数和 UWOC 链路的检测方案。最后,证明了RIS辅助系统可以有效提高混合双跳RF-UWOC系统的性能。