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Performance analysis of ambient backscattering for green Internet of Things

机译：绿色物联网环境后向散射性能分析

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摘要

In this paper, we assess the information-theoretic performance of a point-to-point link that exploits ambient backscattering to support green Internet-of-Thing (IoT) communications. In this framework, an IoT passive device transmits its information by reusing ambient radio-frequency signals emitted by an existing or legacy multicarrier communication system. After introducing the signal model of the relevant communication links, the information-theoretic capacity of both the legacy and backscatter systems is derived. It is found that, under reasonable operative conditions, the legacy system can turn the RF interference arising from backscattering into a form of multipath diversity, which can be exploited to increase its own performance. Moreover, it is shown that, even when it employs simple single-carrier modulation techniques, the backscatter system attains significant data rates over relatively short distances.
机译：在本文中，我们评估了点对点链路的信息理论性能，该点对点链路利用环境后向散射来支持绿色物联网（IoT）通信。在此框架中，IoT无源设备通过重用现有或传统多载波通信系统发出的环境射频信号来传输其信息。在介绍了相关通信链路的信号模型之后，得出了传统系统和反向散射系统的信息理论能力。发现，在合理的操作条件下，传统系统可以将由反向散射引起的RF干扰转换为一种多径分集的形式，可以利用它来提高其自身的性能。而且，已经表明，即使当它采用简单的单载波调制技术时，反向散射系统也能在相对短的距离上获得显着的数据速率。

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