Abstract:

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 direction. 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 better secure transmission performance in dualpolarized satellite MIMO systems.