Secure communication in cooperative network with wireless information and power transfer
Secure communication in cooperative network with wireless information and power transfer
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DOI：
10.1049/iet-spr.2014.0317
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发表时间：
2015-12
期刊：
影响因子：
--
通讯作者：
Shiyang Hu;Z. Ding
中科院分区：
文献类型：
--
作者：
Shiyang Hu;Z. Ding
本文研究了放大转发中继协作网络中的安全通信问题，其中能量收集中继由来自源的射频信号供电。基于两种不同的能量收集策略，即基于功率分割的中继协议和基于时间切换的中继协议，通过考虑功率分割系数和时间切换系数，建立了在发送功率约束下最大化保密率的问题.作者解决了这些问题，通过应用半定规划松弛方法和一维优化的能量收集协议的系数。仿真结果验证了这些解决方案在这项研究中提出的有效性。
This paper considers the secure communication issue in an amplify-and-forward relaying cooperative network, in which the energy harvesting relay is powered by radio-frequency signals from the source. Based on the two different energy harvesting strategies, that is, power splitting-based relaying protocols and time switching-based relaying protocols, the authors formulate the problem for maximising the secrecy rate subject to the transmitted power constraint by taking into account the power splitting coefficient and time switching coefficient. The authors solve these problems by applying the semi-definite programming relaxation approach and 1D optimisation over the coefficients of energy harvesting protocols. The simulation results are presented to verify the effectiveness of these solutions proposed in this study.