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中文摘要：
传统物理层安全人工噪声方法无法带来合法用户可靠性增强.针对该问题,提出一种新型动态人工噪声生成方法,发送方利用噪声发送时权系数剩下的最后一个的自由度,来改变合法接收方收到的人工噪声的相位,使得噪声方向与瞬时信号方向对齐,以提升合法用户瞬时接收信噪比.首先给出了具体的实现方法,然后给出理论上相应的性能分析和复杂度分析.仿真结果表明在对窃听者造成同等干扰水平下该方法能够有效提升合法用户性能.
英文摘要：
The classical method based on artificial noise for physical layer security cannot erhance the reliability of the legitimate user. Aiming at this problem, this paper proPoses a dynamic method to generate artificial noise and glean bene- fit from the artificial noise for the legitimate user. The main idea is that the sender pre-generates artificial noise, then analy- zing the interference of the noise to the legitimate user, the sender change the phase of received artificial noise of the legal user to align the noise and the desired signal. Analytical and simulation results show that the method proposed significantly improves the performance of legal users when the eavesdropper reached the same level of interference in both methods.
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