Relay Selection-and-Jamming Scheme with Nonlinear Energy Harvesting

被引:2
作者
Pham-Minh, Triet [1 ]
Ho-Van, Khuong [2 ,3 ]
Nguyen-Minh, Hoa [1 ]
Nghi-Vinh, Khanh [1 ]
机构
[1] Tra Vinh Univ, Tra Vinh, Vietnam
[2] Ho Chi Minh City Univ Technol HCMUT, 268 Ly Thuong Kiet St,Dist 10, Ho Chi Minh City, Vietnam
[3] Vietnam Natl Univ Ho Chi Minh City, Ho Chi Minh City, Vietnam
关键词
PERFORMANCE; OPTIMIZATION; NOMA; NETWORKS; SYSTEMS; WPCNS; MODEL; PATH;
D O I
10.1155/2021/1717585
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
When direct source-destination communications are in outage, relay selection is a preferable solution to improve reliability for this communications. However, such a relay selection makes the eavesdropper better overhear source data through both source-relay and relay-destination communication hops, losing data security. To improve both reliability and security, this paper proposes a relay selection-and-jamming (RaJ) scheme to select one intermediate node as a conventional relay and another node as a jammer. To enhance energy efficiency, all intermediate nodes harvest radio frequency energy in source signals for their operations with nonlinear energy harvesting (NL-EH). The security and reliability of the RaJ scheme are assessed through suggested rigorous/asymptotic expressions and are significantly better than two benchmark schemes without neither jamming nor both relay selection and jamming. Additionally, they can be optimized with reasonable selection of specifications. Moreover, the NL property of the energy harvesters dramatically affects the reliability but negligibly degrades the security for the RaJ scheme. Furthermore, the linear EH (L-EH) is more reliable but less secure than the NL-EH.
引用
收藏
页数:10
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