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Table 1 System parameters

From: Performance characterization of CSMA/CA adapted multi-user MIMO aware MAC in WLANs

Parameters Value
MAC header 272 bits
PHY header 40 μ s
ACK packet 112 bits
DIFS 50 μ s
SIFS 10 μ s
Slot time 20 μ s
Basic data rate 6 Mbps
Available antenna 1, 2, 4
Minimum contention window (W) 16
Maximum retry limit (R) 6