A Method of Energy Distribution in Two-Hop Energy Harvesting Relay Network

Abstract

The invention provides an energy distribution method in a two-hop energy collection relay network. In a two-hop half-duplex relay network, in an energy collection process, a source node S and a destination node D transfer a part of energy to an unreliable relay R, in a first time slot of an information transmission process, the S sends useful information to the R, meanwhile the FD sends an interference signal to the R, and in a second time slot of the information transmission process, the R forwards the received signal to the D. The total secure rate of the system is defined, and an optimal energy distribution factor is solved. By adoption of the energy distribution method provided by the invention, the situation of insufficient energy of the relay node can be effectively relieved, the energy distribution factor of the node is iteratively optimized on the premise of ensuring the own energy of the node, and the maximization of the secure rate of the system is achieved.

Description

technical field [0001] The invention relates to an energy distribution algorithm with energy harvesting. Background technique [0002] Due to the openness of wireless communication, wireless signals are easy to be eavesdropped, tampered with and interfered, which poses a great threat to users' secure communication. Therefore, the security issue of wireless network is mentioned more and more frequently, and has also received more and more attention. In recent years, with the continuous development of physical layer technology in wireless communication, a large number of technical foundations have been accumulated to realize secure information transmission at the physical layer, and it is becoming more and more urgent to improve the security of wireless communication. Therefore, physical layer security (Physical-Layer Security) has received extensive attention in both theoretical research and practical application. [0003] In traditional energy-constrained wireless communic...

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Problems solved by technology

[0010] Existing research on physical layer security technology is mainly aimed at optimizing the design of eavesdropping nodes, and the relay network itself is credible (such as literature 1, 2), but there are few studies on untrustworthy relay systems

In addition, most of the existing research is to study cooperative interference and node energy harvesting technology alone (such as literature 3, 4)

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