Design and Implementation of an End-to-End Amplify and Forward Full-Duplex Relay Network
Design and Implementation of an End-to-End Amplify and Forward Full-Duplex Relay Network
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DOI：
10.1109/access.2020.3021992
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发表时间：
2020
期刊：
影响因子：
3.9
通讯作者：
S. Shaboyan;A. S. Behbahani;A. Eltawil
中科院分区：
文献类型：
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作者：
S. Shaboyan;A. S. Behbahani;A. Eltawil
本文介绍了一种用于无线网络的带内全双工放大转发中继器的设计与实现。首先，我们描述了全双工中继（FDR）的系统模型，其中中继扩展源节点的范围，到达位于源的无线电覆盖范围之外的目的地节点。分析了FDR在稳定性和发射功率约束下的增益限制。此外，串联FDR的操作，和他们的限制因素进行了讨论。我们分析了整个系统的性能作为一个功能的中继位置恒定增益和恒定发射功率的操作模式。最佳FDR增益最大化端到端网络性能的计算。通过室内和室外环境的仿真和实验，对全双工（FD）和半双工（HD）系统性能进行了评估。实验结果表明，高达23 dB的信号噪声加干扰比（SINR）的改善，在恒定增益模式和高达14 dB的SINR的改善，在恒定发射功率模式。FD网络的测量网络吞吐量显示出高达1.8倍的改善相比，HD对应。最后，选择最佳中继位置以最大化目的地处的SINR。
This paper presents the design and implementation of an In-Band Full-Duplex (IBFD) amplify and forward relay for wireless networks. First, we describe the system model of the full-duplex relay (FDR), where the relay extends the range of the source node to reach a destination node located outside the source’s radio coverage. We analyze the gain limitation of FDR under the stability and transmit power constraints. Further, the operation of tandem FDRs, and their limitation factors are discussed. We analyze the overall system performance as a function of relay location for constant gain and constant transmit power operating modes. The optimal FDR gain maximizing end-to-end network performance is computed. The full-duplex (FD) and half-duplex (HD) system performances are evaluated by simulation and experiments for both outdoor and indoor environments. Experimental results show up to 23dB signal to noise plus interference ratio (SINR) improvement in constant gain mode and up to 14dB SINR improvement in constant transmit power mode. The measured network throughput of FD network shows up to 1.8 times improvement compared to the HD counterpart. Finally, the optimal relay location is selected to maximize SINR at the destination.