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首页> 美国卫生研究院文献>Sensors (Basel Switzerland) >Performance Analysis of Cognitive Relay-Assisted Ambient Backscatter with MRC over Nakagami-m Fading Channels
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Performance Analysis of Cognitive Relay-Assisted Ambient Backscatter with MRC over Nakagami-m Fading Channels

机译：Nakagami-m衰落信道上MRC认知中继辅助环境后向散射的性能分析

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This study presents ambient backscatter communication (AmBC) network as a concept of "modulation in the air" that has drawn growing interest by both academia and industry recently. In particular, we investigate and analyze an AmBC system relying on cognitive radio, where the primary destination is equipped with multiple antennas and maximum ratio combining (MRC). A wireless powered relay is necessary to serve both primary and secondary destinations. Benefiting from the surrounding radio frequency (RF) source, the relay can support the backscattering signal. To facilitate the performance analysis of received nodes, this study presents exact closed-form expressions of the outage probability. For comparison, the outage and throughput performance of these nodes are considered in numerical simulation. Taking advantage of the AmBC technology, the impact of the backscatter ratio on system performance is carefully studied considering various other parameters. Simulation results demonstrate the exactness of the derived outage probabilities and show that the optimal throughput performance can be achieved at specific parameters.
机译：这项研究提出了环境背向散射通信（AmBC）网络作为一种“空中调制”的概念，最近引起了学术界和工业界的越来越多的关注。特别是，我们调查和分析了依赖认知无线电的AmBC系统，该系统的主要目的地配备了多个天线和最大比合并（MRC）。无线中继对于同时服务于主要和次要目的地都是必需的。受益于周围的射频（RF）源，该继电器可以支持反向散射信号。为了便于对接收节点的性能进行分析，本研究提出了停机概率的精确封闭形式。为了进行比较，在数值模拟中考虑了这些节点的中断和吞吐量性能。利用AmBC技术，在考虑其他各种参数的情况下，仔细研究了反向散射比对系统性能的影响。仿真结果证明了导出中断概率的准确性，并表明可以在特定参数下实现最佳吞吐性能。

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