Figure 4
From: Throughput enhancement using synchronization and three-dimensional resource allocation
Synchronization adjustment to overcome clock drifts is executed at each MAS boundary. The TX0 with 0 shift transmits first to supply time reference for TX1 and TX2 and their corresponding receivers. SIFS (short inter-frame space) with a duration of pSIFS (= 10 μ s) is an interval time to give priority to different frame transmission and time to process the received frame to the upper layers.