Wifi data rates
Here are the data rates for 802.11n and 802.11ac for a single spatial stream for 20MHz. 20Mhz BW has 52 subcarriers.
| MCS | Nb subcarriers | NBits | Coding rate | Symbol duration | Mbps | Symbol duration | Mbps | ||
|---|---|---|---|---|---|---|---|---|---|
| 802.11ac/802.11n | BPSK | 0 | 52 | 1 | 1/2 | 4 | 6.5 | 3.6 | 7.2 |
| QPSK | 1 | 52 | 2 | 1/2 | 4 | 13.0 | 3.6 | 14.4 | |
| QPSK | 2 | 52 | 2 | 3/4 | 4 | 19.5 | 3.6 | 21.7 | |
| 16-QAM | 3 | 52 | 4 | 1/2 | 4 | 26.0 | 3.6 | 28.9 | |
| 16-QAM | 4 | 52 | 4 | 3/4 | 4 | 39.0 | 3.6 | 43.3 | |
| 64-QAM | 5 | 52 | 6 | 2/3 | 4 | 52.0 | 3.6 | 57.8 | |
| 64-QAM | 6 | 52 | 6 | 3/4 | 4 | 58.5 | 3.6 | 65.0 | |
| 64-QAM | 7 | 52 | 6 | 5/6 | 4 | 65.0 | 3.6 | 72.2 | |
| 802.11ac | 256-QAM | 8 | 52 | 8 | 3/4 | 4 | 78.0 | 3.6 | 86.7 |
| 256-QAM | 9 | 52 | 8 | 5/6 | 4 | 86.7 | 3.6 | 96.3 |
Max data rates for 802.11ac:
Here's the max data rate based on the different BW.
| MCS | Nb subcarriers | NBits | Coding rate | Symbol duration | Mbps (Nss=1) | Max Mpbs | Nss | |
|---|---|---|---|---|---|---|---|---|
| 256-QAM | 8 | 52 | 8 | 3/4 | 3.6 | 86.7 | 393.3 | 8 |
| 256-QAM | 9 | 108 | 8 | 5/6 | 3.6 | 200.0 | 1600.0 | 8 |
| 256-QAM | 9 | 234 | 8 | 5/6 | 3.6 | 433.3 | 3466.7 | 8 |
| 256-QAM | 9 | 468 | 8 | 5/6 | 3.6 | 866.7 | 6933.3 | 8 |