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1.
Figure 2

Figure 2. From: Beamforming Transmission in IEEE 802.11ac under Time-Varying Channels.

Frame-exchange sequences for (a) SU-BF and (b) MU-BF.

Heejung Yu, et al. ScientificWorldJournal. 2014;2014:920937.

CitationFull text

2.
Figure 5

Figure 5. From: Beamforming Transmission in IEEE 802.11ac under Time-Varying Channels.

Rate loss due to channel variation in SU-BF mode.

Heejung Yu, et al. ScientificWorldJournal. 2014;2014:920937.

CitationFull text

3.
Algorithm 1

Algorithm 1. From: Beamforming Transmission in IEEE 802.11ac under Time-Varying Channels.

An algorithm for determining the optimal MCS with a given payload size.

Heejung Yu, et al. ScientificWorldJournal. 2014;2014:920937.

CitationFull text

4.
Figure 1

Figure 1. From: Beamforming Transmission in IEEE 802.11ac under Time-Varying Channels.

System model for an MU-BF with one AP and K STAs.

Heejung Yu, et al. ScientificWorldJournal. 2014;2014:920937.

CitationFull text

5.
Figure 6

Figure 6. From: Beamforming Transmission in IEEE 802.11ac under Time-Varying Channels.

Sum rate loss of two STAs due to channel variation in MU-BF mode.

Heejung Yu, et al. ScientificWorldJournal. 2014;2014:920937.

CitationFull text

6.
Figure 8

Figure 8. From: Beamforming Transmission in IEEE 802.11ac under Time-Varying Channels.

Throughput of SU-BF and MU-BF modes with a given SNR and mobile speeds (solid lines: SU-BF and dotted lines: MU-BF).

Heejung Yu, et al. ScientificWorldJournal. 2014;2014:920937.

CitationFull text

7.
Figure 4

Figure 4. From: Beamforming Transmission in IEEE 802.11ac under Time-Varying Channels.

(a) Legacy frame format and (b) VHT frame format. (The number below each box denotes the number of OFDM symbols.)

Heejung Yu, et al. ScientificWorldJournal. 2014;2014:920937.

CitationFull text

8.
Figure 3

Figure 3. From: Beamforming Transmission in IEEE 802.11ac under Time-Varying Channels.

Frame contents for (a) NDPA, (b) BF-Poll, and (c) VHT-CB frames. (The number below each box denotes the number of bytes for each field.)

Heejung Yu, et al. ScientificWorldJournal. 2014;2014:920937.

CitationFull text

9.
Figure 7

Figure 7. From: Beamforming Transmission in IEEE 802.11ac under Time-Varying Channels.

Optimal packet length with a given payload and mobile speeds (solid lines: SU-BF and dotted lines: MU-BF, SNR = 20 dB).

Heejung Yu, et al. ScientificWorldJournal. 2014;2014:920937.

CitationFull text

10.
Figure 9

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

Throughput of SU-BF and MU-BF modes under channels with a given condition number of (SNR = 20 dB and mobile speed = 50 km/h).

Heejung Yu, et al. ScientificWorldJournal. 2014;2014:920937.

CitationFull text

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