基于双向ANC中继系统的协作干扰策略分析  

Analysis of the cooperative jamming strategy based on two-way ANC relay systems

作　　者：张宇阳[1] 高媛媛[1] 杨保峰[1] 郭明喜[1] 沙楠[1] 

机构地区：[1]解放军理工大学通信工程学院,江苏南京210000

出　　处：《微型机与应用》2017年第7期63-66,共4页Microcomputer & Its Applications

基　　金：国家自然科学基金资助项目(61301157;61501511)

摘　　要：模拟网络编码(Analog Network Coding,ANC)和协作干扰(Cooperative Jamming,CJ)都能够提高无线通信系统的物理层安全性能。文章基于物理层安全理论,针对同时面对内部和外部窃听者的双向ANC中继系统,提出了一种CJ策略。所提策略通过一个外部干扰节点来实施干扰,先优化受限的总干扰功率在各通信时隙间的功率分配,再优化受限的系统总功率在系统各合法节点间的功率分配,使双向ANC中继系统实现更好的物理层安全性能,并通过相应的理论分析和对特定场景的数值仿真进行了验证。Analog network coding（ANC） and cooperative jamming（CJ） both can improve the physical layer security（PLS） performance of wireless communication systems. Based on the theory of the PLS,this paper proposes a CJ strategy according to the two-way ANC relay system in the presence of an internal and external eavesdroppers. The proposed strategy enables an external jammer node to transmit jamming signals to confuse eavesdroppers,and achieves the better PLS performance through the optimal total jamming power allocation among communication time slots and the optimal system total power allocation among legitimate nodes in the system. The corresponding theoretical analysis and simulation results verify that.

关 键 词：模拟网络编码 协作干扰 物理层安全 功率分配 

分 类 号：TN918.91[电子电信—通信与信息系统]