In this paper, we evaluate secrecy performance of cooperative jamming (CJ) aided secure transmission for Multi-hop Low-Energy Adaptive Clustering Hierarchy (M-LEACH) networks, where data transmission between a source and a destination is performed via cluster heads (CHs) of intermediate clusters, and is overheard by an eavesdropper. To protect the source information at each hop, each CH selects one or many cluster nodes to realize the CJ technique. We propose energy harvesting (EH) based jammer selection methods named MAX-EH, MAX-IP and ALL-CJ, where the selected jammer(s) has to harvest wireless energy from a dedicated power beacon to generate jamming noises. In MAX-EH, the cluster node obtained the MAXimum Energy Harvested from the power beacon is chosen. In MAX-IP, the selected jammer is the cluster node providing the MAXimum Interference Power to the eavesdropper. In ALL-CJ, ALL cluster nodes in the clusters take part in the CJ operation. For performance evaluation, we derive expressions of the end-to-end (e2e) secrecy outage probability (SOP) for the proposed methods over Rayleigh fading channels. We then perform Monte-Carlo based computer simulations to verify the theoretical results. The results presented that the proposed methods outperform the RANDom jammer selection (RAND) and the corresponding method WithOut using the CJ technique (WO-CJ).

在本文中，我们评估了多跳低能耗自适应集群层次结构（M-LEACH）网络中协作干扰（CJ）辅助安全传输的保密性能，其中源和目标之间的数据传输是通过集群头（CH）执行的）的中间集群，并被窃听者窃听。为了保护每一跳的源信息，每个CH选择一个或多个集群节点来实现CJ技术。我们提出了基于能量收集（EH）的干扰源选择方法，称为MAX-EH，MAX-IP和ALL-CJ，其中选定的干扰源必须从专用功率信标中收集无线能量以产生干扰噪声。在MAX-EH中，选择从功率信标获得最大能量收集的群集节点。在MAX-IP中 选定的干扰者是向窃听者提供最大干扰功率的群集节点。在ALL-CJ中，集群中的所有集群节点都参与CJ操作。对于性能评估，我们推导了瑞利衰落信道上所提方法的端到端（e2e）保密中断概率（SOP）的表达式。然后，我们执行基于蒙特卡洛的计算机模拟，以验证理论结果。结果表明，所提出的方法优于RANDom干扰源选择（RAND）以及不使用CJ技术（WO-CJ）的相应方法。然后，我们执行基于蒙特卡洛的计算机模拟，以验证理论结果。结果表明，所提出的方法优于RANDom干扰源选择（RAND）以及不使用CJ技术（WO-CJ）的相应方法。然后，我们执行基于蒙特卡洛的计算机模拟，以验证理论结果。结果表明，所提出的方法优于RANDom干扰源选择（RAND）以及不使用CJ技术（WO-CJ）的相应方法。