Beamforming Transmission in IEEE 802.11ac under Time-Varying Channels

<table>Throughput of SU-BF and MU-BF modes under channels with a given condition number of <svg height="19.575001" id="M157" style="vertical-align:-0.1881pt" version="1.1" viewbox="0 0 74.050003 19.575001" width="74.050003" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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<g transform="matrix(.017,-0,0,-.017,36.488,19.25)"><path d="M759 25v-25h-339v25q54 6 71.5 20.5t17.5 52.5v228h-241v-228q0 -40 17 -54q16 -13 72 -19v-25h-336v25q54 8 69 20q16 13 16 53v479q0 41 -16.5 55t-68.5 19v25h336v-25q-54 -4 -71.5 -18.5t-17.5 -55.5v-204h241v204q0 41 -17.5 55.5t-71.5 18.5v25h339v-25
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<g transform="matrix(.017,-0,0,-.017,49.713,19.25)"><path d="M759 25v-25h-339v25q54 6 71.5 20.5t17.5 52.5v228h-241v-228q0 -40 17 -54q16 -13 72 -19v-25h-336v25q54 8 69 20q16 13 16 53v479q0 41 -16.5 55t-68.5 19v25h336v-25q-54 -4 -71.5 -18.5t-17.5 -55.5v-204h241v204q0 41 -17.5 55.5t-71.5 18.5v25h339v-25
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</svg> (SNR = 20 dB and mobile speed = 50 km/h).</table>

The Scientific World Journal

fig9

Figure 9

Figure 9: Beamforming Transmission in IEEE 802.11ac under Time-Varying Channels 