基于链路间干扰辅助的中继D2D系统安全通信方法
发布时间:2019-03-07 12:28
【摘要】:在包含中继节点的D2D(Device-to-Device)系统中,针对蜂窝链路与D2D链路同时受窃听的问题,提出一种基于链路间干扰辅助的中继D2D系统安全通信方法.首先,确定蜂窝链路与D2D链路上下行发送模式;然后,在基站与中继节点的发送信号中添加人工噪声,协作干扰窃听者;最后,对基站功率分配与D2D功率控制进行了优化,以实现不同类型链路间干扰辅助保障系统安全.仿真结果表明,所提出的安全通信方法在保密速率方面比SVD(Singular Value Decomposition)与ZF(Zero-Forcing)预编码方法提高了1.5bit/s/Hz.
[Abstract]:In a D2D (Device-to-Device) system with relay nodes, a secure communication method for relay D2D systems based on inter-link interference is proposed to solve the problem that both cellular links and D2D links are eavesdropped at the same time. First, the downlink transmission mode between the cellular link and the D2D link is determined, and then artificial noise is added to the transmission signal of the base station and the relay node to co-operate to interfere with the eavesdropper. Finally, the power allocation and D2D power control of the base station are optimized to ensure the security of the system with different types of inter-link interference. Simulation results show that the proposed secure communication method improves the security rate by 1.5 bits / Hz compared with the precoding method of SVD (Singular Value Decomposition) and ZF (Zero-Forcing).
【作者单位】: 国家数字交换系统工程技术研究中心;
【基金】:国家自然科学基金(No.61379006) 国家863计划项目(No.2015AA01A708) 中国博士后科学基金资助项目(No.2016M592990)
【分类号】:TN929.5
本文编号:2436118
[Abstract]:In a D2D (Device-to-Device) system with relay nodes, a secure communication method for relay D2D systems based on inter-link interference is proposed to solve the problem that both cellular links and D2D links are eavesdropped at the same time. First, the downlink transmission mode between the cellular link and the D2D link is determined, and then artificial noise is added to the transmission signal of the base station and the relay node to co-operate to interfere with the eavesdropper. Finally, the power allocation and D2D power control of the base station are optimized to ensure the security of the system with different types of inter-link interference. Simulation results show that the proposed secure communication method improves the security rate by 1.5 bits / Hz compared with the precoding method of SVD (Singular Value Decomposition) and ZF (Zero-Forcing).
【作者单位】: 国家数字交换系统工程技术研究中心;
【基金】:国家自然科学基金(No.61379006) 国家863计划项目(No.2015AA01A708) 中国博士后科学基金资助项目(No.2016M592990)
【分类号】:TN929.5
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