From: Development and experimental validation of downlink multiuser MIMO-OFDM in gigabit wireless LAN systems
Position
Time (μs)
(a)
44
(b)
70
(c)
60
(d)
318
(e)
8 + 8N s + 4n (n = 1,2,…)
(f)
440 + 68N s + 4n (n = 1,2,…)