论文部分内容阅读
在采用波束赋形和人工噪声的物理层安全传输系统中,利用人工噪声提高合法接收端的性能.发送端根据发送符号和信道系数判断人工噪声的分量是否对合法接收端的信号检测有益,并由此将人工噪声分为有益噪声和普通噪声,分别进行不同的波束赋形处理.在不改变人工噪声干扰窃听端接收的前提下,利用人工噪声提高合法接收端的接收性能.对采用相移键控(PSK)调制时的误码性能和保密容量进行理论分析和仿真,结果显示,与传统的人工噪声方案相比,所提出的人工噪声方案可提高合法接收端的性能,改善保密容量.
In the physical layer security transmission system using beamforming and artificial noise, artificial noise is used to improve the performance of the legitimate receiving end, and the transmitting end judges whether the component of artificial noise is beneficial to the signal detection of the legitimate receiving end according to the transmitted symbol and the channel coefficient, and thus Artificial noise is divided into useful noise and normal noise, and different beamforming processing are carried out respectively.Under the premise of not changing artificial noise interference eavesdropping end reception, artificial noise is used to improve the receiving performance of legitimate receiving end.Analyzing the performance of adopting phase shift keying PSK). The results show that compared with the traditional artificial noise scheme, the proposed artificial noise scheme can improve the performance of the legitimate receiver and improve the confidentiality capacity.