Open-Loop Beamforming Technique for MIMO System and Its Practical Realization

<table>Measured <svg height="11.075" id="M138" style="vertical-align:-0.3135pt" version="1.1" viewbox="0 0 32.700001 11.075" width="32.700001" xmlns="http://www.w3.org/2000/svg">
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<tspan style="font-size: 12.50px; " x="0" y="0">4</tspan>
<tspan style="font-size: 12.50px; " x="9.0271664" y="0">×</tspan>
<tspan style="font-size: 12.50px; " x="19.804752" y="0">4</tspan>
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</svg> MIMO channels of conventional MIMO system and open loop beamforming (Butler matrix), at location 5.</table>

International Journal of Antennas and Propagation

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Figure 9

Figure 9: Open-Loop Beamforming Technique for MIMO System and Its Practical Realization 