MIMO for ground vehicles Gains in reality

Multiple-Input Multiple-Output (MIMO) has become a popular technique to increase the data rate of communication systems as MIMO technology can increase the data rate without increasing the power or the bandwidth. Research has primarily been focused on civilian use, although there are exceptions. This report analyzes MIMO mainly for frequencies around 300 MHz and for peerto- peer scenarios. MIMO requires that both transmitter and receiver are equipped with multiple antennas that are separated in space. In this report, we have specifically examined two platforms in the Swedish armed forces. On the platforms, it was deemed realistic with 2x2 or 4x4 MIMO. Capacity increases of 1.5 times or 2-3 times the SISO capacity are reasonable for 2x2 MIMO and 4x4 MIMO according to previous research. Instead of a capacity increase MIMO can be used to increase robustness by reducing the effects of fading. Furthermore, MIMO can be used to reduce the output power of the communication system or to increase the range.