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首页> 外文期刊>AEU: Archiv fur Elektronik und Ubertragungstechnik: Electronic and Communication >End-to-end performance of Hybrid DF/AF (HDAF) relayed underlay cognitive radio networks
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End-to-end performance of Hybrid DF/AF (HDAF) relayed underlay cognitive radio networks

机译：混合DF / AF（HDAF）继承底层认知无线电网络的端到端性能

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In the presented work, the performance analysis of an underlay cognitive relay network with a hybriddecode/amplify-and-forward relaying protocol is undertaken. Since the system is an underlay system, the secondary network will communicate simultaneously with the primary network. Hence interference temperature will act as a constraint to keep the secondary communication from interfering with the primary transmission. To ensure this, secondary transmit powers need to be kept below a pre-defined threshold level. Severe multi-path fading and shadowing or a long distance between the secondary source and the destination make a direct link between the two infeasible. These nodes can only be linked by a relay between the two. All the radio links in the system are characterized by the extended generalized-K fading distribution. The closed form expressions for the outage probability and ergodic channel capacity of the system are derived. The system outage performance and capacity with hybriddecode/amplify-and-forward relay is compared to the performance with amplify-and-forward and decode-and-forward relays. Optimum relay position for best outage performance is also investigated. Further, the results of the performance analysis of the system are also illustrated by the numerical plots. (C) 2020 Elsevier GmbH. All rights reserved.
机译：在所呈现的工作中，进行了具有混合码/放大和向前中继协议的衬砌认知继电器网络的性能分析。由于系统是底层系统，因此辅助网络将与主网络同时通信。因此，干扰温度将充当保持次要通信干扰主传输的约束。为了确保这一点，需要将辅助发射功率保持在预定义的阈值水平之下。严重的多路径衰落和阴影或辅助源和目的地之间的长距离在两个不可行的情况下进行直接链接。这些节点只能通过两者之间的继电器链接。系统中的所有无线电链路都是通过扩展的广义-K衰落分布的特征。衍生出停电概率和系统的静态信道容量的闭合形式表达式。将系统中断性能和具有混合码/放大和前进继电器的容量与扩增和前进和前进继电器的性能进行了比较。还研究了最佳中继性能的最佳继电器位置。此外，系统的性能分析的结果也通过数值图说明。 （c）2020 Elsevier GmbH。版权所有。

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