Ø Synchronization
q synch., gain setting, energy detection, frequency offset compensation
Ø SFD (Start Frame Delimiter)
q 1111001110100000
Ø Signal
q data rate of the payload (0A: 1 Mbit/s DBPSK; 14: 2 Mbit/s DQPSK)
Ø Service Length
q future use, 00: 802.11 compliant q length of the payload
Ø HEC (Header Error Check)
q protection of signal, service and length, x16+x12+x5+1