A MIMO solution based on polarization diversity for ionospheric radio links

This paper proposes a MIMO 2×2 solution to increase the capacity of HF radio links through the ionospheric channel. A diversity in the transmitted polarizations replaces the classical space diversity and authorizes a practical set up in a context of decametric wavelengths. Simulations, based on a realistic model of the ionosphere, underline a significant increase in the channel capacity if compared to a SISO system.