论文标题
通过网络编码的RIS辅助多播通信的BER分析
BER Analysis of RIS Assisted Multicast Communications with Network Coding
论文作者
论文摘要
在本文中，提出了两个源节点和两个目的地节点，提出了可重新配置的智能表面（RIS）辅助双跳线无线通信网络。 RIS通过一系列离散的相移材料阵列获得了信号强度。来自源节点的多播通信是使用解码和前进（DF）继电器节点启用的。在继电器节点中，应用物理层网络编码（PLNC）概念，并将PLNC符号传输到目标节点。源节点和继电器节点之间的关节ris-multicast通道被建模为两个缩放的非中央卡方分布的总和。分析表达式是使用MONM生成函数（MGF）方法在中继节点和目标节点处得出的位错误率（BER），并使用Monte-Carlo模拟验证了结果。据观察，所提出的RIS辅助网络的BER性能比常规的非RIS通道链接要好得多。
In this paper, Recofigurable Intelligent Surface (RIS) assisted dual-hop multicast wireless communication network is proposed with two source nodes and two destination nodes. RIS boosts received signal strength through an intelligent software-controlled array of discrete phase-shifting metamaterials. The multicast communication from the source nodes is enabled using a Decode and Forward (DF) relay node. In the relay node, the Physical Layer Network Coding (PLNC) concept is applied and the PLNC symbol is transmitted to the destination nodes. The joint RIS-Multicast channels between source nodes and the relay node are modeled as the sum of two scaled non-central Chi-Square distributions. Analytical expressions are derived for Bit Error Rate (BER) at relay node and destination nodes using Moment Generating Function (MGF) approach and the results are validated using Monte-Carlo simulations. It is observed that the BER performance of the proposed RIS assisted network is a lot better than the conventional non-RIS channels links.
