多输入多输出雷达搜索模式下5G毫米波射频算法

5G millimeter wave RF algorithm in multiple⁃input multiple⁃output radar search mode

为提升毫米波在射频传输中的传输安全,提出了多输入多输出(MIMO)雷达搜索模式下5G毫米波射频算法。根据5G毫米波的传输特性,获取了MIMO雷达搜索模式的雷达截获因子,建立了毫米波射频隐身模型并获取目标函数,计算了雷达搜索模式的射频截获概率。基于毫米波信道稀疏性结果结合贝叶斯算法获取了毫米波射频通道的最佳估计值,从而计算出射频通道最佳值,利用估计后的信号传输隐身后的射频实现射频传输。实验结果表明,本文方法在毫米波射频传输时间为140 s时,信纳比ρ高达0.83。证明使用该方法开展毫米波射频传输时,毫米波传输质量高,不易发生相位幅值的变形,可实现5G毫米波射频的高质量传输。

In order to improve the transmission security of millimeter wave in radio frequency(RF)transmission,the research on 5G millimeter wave RF algorithm in multi-input multi-output(MIMO)radar search mode was proposed.Based on the transmission characteristics of 5G millimeter wave,the radar interception factor of MIMO radar search mode was obtained.A millimeter wave radio frequency stealth model was established and the objective function was obtained.The radio frequency interception probability of the radar search mode was calculated.The best estimation value of millimeter wave RF channel was obtained by combining the millimeter wave channel sparsity results with Bayesian algorithm,from which the best value of RF channel was calculated,and the RF transmission was realized by using the estimated signal transmission after stealth.The experimental results show that when the millimeter wave RF transmission time is 140 s,theρof the proposed method is as high as 0.83.It is proved that when this method is used for millimeter wave RF transmission,the transmission quality of millimeter wave is high,the phase amplitude deformation is not easy to occur,and the high-quality transmission of 5G millimeter wave RF can be realized.