论文标题
具有智能反射表面的定向调制的安全传输
Directional Modulation-Enabled Secure Transmission with Intelligent Reflecting Surface
论文作者
论文摘要
我们提出了一种新的安全传输方案，该方案使用定向调制（DM）具有人造噪声，并通过智能反射表面（IRS）的帮助。具体而言，直接路径和启用IRS的反射路径带有相同的机密信号，因此可以在所需的位置相干地添加以最大化接收到的总功率，而其他位置的接收信号会被扭曲。我们得出了拟议方案实现的保密率的封闭式表达。使用仿真结果，我们表明所提出的方案可以在特定位置实现二维安全传输。同样，随着IRS的反射元素数量增加，其比常规DM方案的性能优势变得更加明显。
We propose a new secure transmission scheme which uses directional modulation (DM) with artificial noise and is aided by the intelligent reflecting surface (IRS). Specifically, the direct path and IRS-enabled reflect path carry the same confidential signal and thus can be coherently added at the desired position to maximize the total received power, while the received signals at other positions are distorted. We derive a closed-form expression for the secrecy rate achieved by the proposed scheme. Using simulation results, we show that the proposed scheme can achieve two-dimensional secure transmission at a specific position. Also, its performance advantage over the conventional DM scheme becomes more pronounced as the number of reflecting elements at the IRS increases.
