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首页> 外文期刊>IEEE transactions on information forensics and security >Enhanced Secrecy Performance of Multihop IoT Networks With Cooperative Hybrid-Duplex Jamming
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Enhanced Secrecy Performance of Multihop IoT Networks With Cooperative Hybrid-Duplex Jamming

机译：使用协同混合 - 双工卡抖动的多彩印IOT网络的提高秘密性能

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摘要

As the number of connected devices is exponentially increasing, security in Internet of Things (IoT) networks presents a major challenge. Accordingly, in this work we investigate the secrecy performance of multihop IoT networks assuming that each node is equipped with only two antennas, and can operate in both Half-Duplex (HD) and Full-Duplex (FD) modes. Moreover, we propose an FD Cooperative Jamming (CJ) scheme to provide higher security against randomly located eavesdroppers, where each information symbol is protected with two jamming signals by its two neighbouring nodes, one of which is the FD receiver. We demonstrate that under a total power constraint, the proposed FD-CJ scheme significantly outperforms the conventional FD Single Jamming (FD-SJ) approach, where only the receiving node acts as a jammer, especially when the number of hops is larger than two. Moreover, when the Channel State Information (CSI) is available at the transmitter, and transmit beamforming is applied, our results demonstrate that at low Signal-to-Noise Ratio (SNR), higher secrecy performance is obtained if the receiving node operates in HD and allocates both antennas for data reception, leaving only a single jammer active; while at high SNR, a significant secrecy enhancement can be achieved with FD jamming. Our proposed FD-CJ scheme is found to demonstrate a great resilience over multihop networks, as only a marginal performance loss is experienced as the number of hops increases. For each case, an integral closed-form expression is derived for the secrecy outage probability, and verified by Monte Carlo simulations.
机译：随着所连接设备的数量是指数越来越大的，东西中的安全性（物联网）网络呈现出主要挑战。因此，在这项工作中，我们调查多彩印IoT网络假设每个节点都有两个天线的保密性能，并且可以在半双工（HD）和全双工（FD）模式中操作。此外，我们提出了一种FD协作干扰（CJ）方案，以提供更高的安全性窃听者，其中每个信息符号由其两个相邻节点的两个干扰信号保护，其中一个是FD接收器。我们证明，在总功率约束下，所提出的FD-CJ方案显着优于传统的FD单打扰（FD-SJ）方法，其中仅接收节点充当干扰器，尤其是当跳数大于两个时。此外，当发送器处的信道状态信息（CSI）可用时，我们的结果表明，在低信噪比（SNR），如果接收节点在HD中运行，则获得更高的保密性能并分配两个天线进行数据接收，只留下一个有效的混合器;虽然在高SNR时，可以通过FD卡堵塞实现显着的秘密增强。我们拟议的FD-CJ计划被发现展示了对多跳网络的巨大恢复力，因为随着啤酒花数量的增加，似乎只有边际性能损失。对于每种情况，导出积分闭合表达式表达式，用于保密性中断概率，并由Monte Carlo模拟验证。

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