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文章针对外部窃听者与不可信中继同时存在的协同通信系统,采用人工干扰节点对内(不可信中继)、外部窃听者进行干扰来提高系统的安全性能。分析了干扰节点个数对系统安全通信的影响,并在此基础上讨论了为达到最佳干扰效果,系统中各类节点间的功率分配问题,得到了系统总发送功率一定条件下的最佳干扰节点个数配置与干扰分功率方案。
In this paper, aiming at the co-existence communication system that external eavesdroppers and untrusted relays coexist, the interference of internal artificial interception nodes (untrusted relay) and external eavesdroppers is used to improve the security performance of the system. The influence of the number of interfering nodes on the system safety communication is analyzed. Based on this, the optimal power distribution problem among all kinds of nodes in the system is discussed in order to get the best interference effect, and the optimal total transmission power under certain conditions is obtained Interference node number configuration and interference sub-power scheme.