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

<table>Illustration of applying Butler matrix for <svg height="11.075" id="M128" 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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International Journal of Antennas and Propagation

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Figure 5

Figure 5: Open-Loop Beamforming Technique for MIMO System and Its Practical Realization 