Research Article
Beamforming Transmission in IEEE 802.11ac under Time-Varying Channels
Table 1
MCS’s and required SNR values in IEEE 802.11ac.
| | MCS index | Modulation | Code rate | | Spectral efficiency (bps/Hz) | Required SNR (dB) |
| | 0 | BPSK | 1/2 | 26 | 0.5 | −3.83 | | 1 | QPSK | 1/2 | 52 | 1 | 0 | | 2 | QPSK | 3/4 | 78 | 1.5 | 2.62 | | 3 | 16-QAM | 1/2 | 104 | 2 | 4.77 | | 4 | 16-QAM | 3/4 | 156 | 3 | 8.45 | | 5 | 64-QAM | 2/3 | 208 | 4 | 11.67 | | 6 | 64-QAM | 3/4 | 234 | 4.5 | 13.35 | | 7 | 64-QAM | 5/6 | 260 | 5 | 14.91 | | 8 | 256-QAM | 3/4 | 312 | 6 | 17.99 | | 9 | 256-QAM | 5/6 | Not valid |
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