Siemens IEEE802.11 - Manual (Page 29)

WLAN-IEEE802.11 Tutorial (Maximilian Riegel), 021018-wlan-tutorial.ppt Page 29 © Siemens, 2002
Physical Layer Convergence Protocol
(PLCP)
n
SYNC (gain setting, energy detection, antenna selection,
frequency offset compensation)
n
SFD (Start Frame Delimiter; bit synchronization)
n
SIGNAL (rate indication; 1, 2, 5.5, 11 Mbit/s)
n
SERVICE (reserved for future use)
n
LENGTH (number of octets in PSDU)
n
CRC (CCITT CRC-16, protects signal, service, length field)
PLCP Protocol Data Unit