To cause effective interference on eavesdropper with an enhanced security, a secure precise jamming and communication (SPJC) is proposed to radiate the transmit energy of artificial noise (AN) and confidential message (CM) into the neighborhoods of Eve and Bob by using random subcarrier selection, directional modulation, and beamforming under phase alignment constraint (PAC). Here, we propose two good-performance beamforming schemes: minimum transmit power (Min-TP) and minimum regularized transmit power (Min-RTP) to achieve SPJC under PAC and orthogonal constraint (OC), where AN and CM are projected onto the null-spaces of the desired and eavesdropping channels, respectively. Simulation results show that the proposed Min-TP and Min-RTP methods perform much better than existing equal amplitude (EA) and null-space projection (NSP) methods in terms of secrecy rate (SR) at medium and high signal-to-noise ratio regions. The SR performance difference between the proposed two methods becomes trivial as the number of transmit antennas approaches large. More importantly, they form two main peaks of AN and CM around Eve and Bob, respectively.

中文翻译：

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两个高效波束成形器，用于安全精确干扰和相位对齐通信

为了在增强安全性的情况下对窃听者造成有效干扰，提出了一种安全精确干扰和通信（SPJC），通过使用随机子载波将人工噪声（AN）和机密消息（CM）的发射能量辐射到 Eve 和 Bob 的邻域中。相位对齐约束 (PAC) 下的选择、定向调制和波束成形。在这里，我们提出了两种性能良好的波束成形方案：最小发射功率 (Min-TP) 和最小正则化发射功率 (Min-RTP) 以在 PAC 和正交约束 (OC) 下实现 SPJC，其中 AN 和 CM 投影到零- 所需和窃听通道的空间，分别。仿真结果表明，所提出的 Min-TP 和 Min-RTP 方法在中高信噪比下的保密率 (SR) 方面比现有的等幅 (EA) 和零空间投影 (NSP) 方法要好得多比区域。随着发射天线数量的增加，所提出的两种方法之间的 SR 性能差异变得微不足道。更重要的是，它们分别在 Eve 和 Bob 周围形成了两个主要的 AN 和 CM 峰。