Abstract
A MIMO system designed for trans-horizon radio communications within the HF band (3–30 MHz) is presented. The diversity of transmitted polarisations is proposed as an alternative to spatial diversity in order to limit the aperture of antenna arrays at both ends of the radio link. After a theoretical step confirming the capacity gain of a 2×2 MIMO architecture, an experimental communication system has been developed and tested with a range of 280 km. The first results underline a data transfer rate reaching a value of 24.09 kbit/s (in a 4.2 kHz bandwidth) which significantly exceeds the current standards for HF modems.
Published Version
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