From: Dynamic tuning of the IEEE 802.11 distributed coordination function to derive a theoretical throughput limit
DataRate
11 Mbps
PCLPDataRate
1 Mbps
BasicRate
Slot time
20 μs
SIFS
10 μs
DIFS
50 μs
EIFS
SIFS + DIFS + (ACK length)/basic rate
PHYHeader
192 bits
MACHeader
224 bits
ACK length
112 bits + PHYHeader