基于方向-极化状态调制的卫星MIMO安全传输方法  

Secure transmission method for dual-polarized satellite MIMO systems based on directional polarization state modulation

作　　者：罗章凯[1] 王华力[1] 吕望晗 

机构地区：[1]解放军理工大学通信工程学院电子技术教研中心,江苏南京210007 [2]南京理工大学电子工程与光电技术学院,江苏南京210094

出　　处：《系统工程与电子技术》2017年第4期888-892,共5页Systems Engineering and Electronics

基　　金：国家自然科学基金(61271354)资助课题

摘　　要：为提高卫星信息传输过程中窃听难度,提出一种基于方向-极化状态调制技术的双极化卫星多输入多输出(multi input multi output,MIMO)安全传输方法。该方法将传输信号的极化状态与接收机方位信息相结合,实现信号差异性发射,增大非期望方向接收机解调信息的难度。理论分析和仿真结果表明,相比于传统调制技术,基于方向-极化状态调制技术为双极化卫星MIMO系统的信息传输提供了一种更加安全的传输方案。A secure transmission method for dual-polarized satellite multiple input multiple output （MIMO） systems based on the directional polarization state modulation technology is proposed. Indeed, the transmitted signal＇s polarization state （PS） is linked with the azimuth angle, thus the PS is changed off the desired direc- tion. In this way, it is more difficult for receivers in undesired directions to demodulate any useful information in the received signal. Theoretical analysis and simulation results demonstrate the proposed technique offers a bet- ter secure transmission performance in dual-polarized satellite MIMO systems.

关 键 词：极化调制 安全传输 卫星多输入多输出 

分 类 号：TN911[电子电信—通信与信息系统]