论文标题
使用无线驱动干扰器的放大和前向继电器网络的安全边界和偏僻的保密率分析
Secure Beamforming and Ergodic Secrecy Rate Analysis for Amplify-and-Forward Relay Networks with Wireless Powered Jammer
论文作者
论文摘要
在此通信中，我们考虑了一个放大和前向的继电器网络，其中传输的信息被窃听者偷听。为了混淆窃听器，还考虑了无线驱动的干扰器，从多 - 安德滕纳来源收集能量。我们提出了一种新的安全波束形成方案，其中波束成形矢量是能量光束成形（EB）和信息光束成形（IB）向量的线性组合。我们还为提出的波束形成矢量提出了一种新的闭合溶液，与琐碎的EB和IB矢量相比，该载体显示出更高的保密率。此外，对于源头大量天线的渐近状态，也得出了梯形保密率的紧密闭合近似值。最后，提供了数值示例和模拟，以验证我们的分析结果。
In this correspondence, we consider an amplify-and-forward relay network in which relayed information is overheard by an eavesdropper. In order to confound the eavesdropper, a wireless-powered jammer is also considered which harvests energy from a multiple-antenna source. We proposed a new secure beamforming scheme in which beamforming vector is a linear combination of the energy beamforming (EB) and information beamforming (IB) vectors. We also present a new closed-form solution for the proposed beamforming vector which is shown to achieve a higher secrecy rate as compared to the trivial EB and IB vectors. Moreover, a tight closed-form approximation for the ergodic secrecy rate is also derived for the asymptotic regime of a large number of antennas at the source. Finally, numerical examples and simulations are provided which validate our analytical results.
