Research Article
A Survey on Coexistence in Heterogeneous Wireless Networks in TV White Spaces
Table 2
Main PHY/MAC differences between IEEE 802.22 and 802.11af.
| | Systems | 802.11af | 802.22 |
| | Coverage | Up to few meters | Max up to 100 km |
| | Channel bandwidth (MHz) | 5, 10, 20, 40 | 6, 7, 8 |
| | Modulation | OFDM | OFDM |
| | TX power (dBm) | 20 | 36 |
| | RX (dBm) sensitivity | -97 | -64 |
| | Multiple Method access | CSMA, TDMA | OFDMA |
|
|
