Lee Jong-Ho, Sohn Illsoo, Kim Yong-Hwa
Department of Electronic Engineering, Gachon University, Seongnam, Gyeonggi 13120, Korea.
Department of Computer Science and Engineering, Seoul National University of Science and Technology, Seoul 01811, Korea.
Sensors (Basel). 2017 May 16;17(5):1128. doi: 10.3390/s17051128.
In this paper, we investigate simultaneous wireless power transfer and secure multicasting via cooperative decode-and-forward (DF) relays in the presence of multiple energy receivers and eavesdroppers. Two scenarios are considered under a total power budget: maximizing the minimum harvested energy among the energy receivers under a multicast secrecy rate constraint; and maximizing the multicast secrecy rate under a minimum harvested energy constraint. For both scenarios, we solve the transmit power allocation and relay beamformer design problems by using semidefinite relaxation and bisection technique. We present numerical results to analyze the energy harvesting and secure multicasting performances in cooperative DF relay networks.
在本文中，我们研究了在存在多个能量接收器和窃听者的情况下，通过协作解码转发（DF）中继进行同时无线功率传输和安全多播。在总功率预算下考虑了两种场景：在多播保密率约束下最大化能量接收器之间的最小收集能量；以及在最小收集能量约束下最大化多播保密率。对于这两种场景，我们使用半定松弛和二分法技术解决发射功率分配和中继波束成形器设计问题。我们给出数值结果以分析协作DF中继网络中的能量收集和安全多播性能。
