Physical Layer
Functions:
Encoding/decoding of signals (PSK, QAM, etc)
Preamble generation/removal (for synchronization)
Bit transimission/reception
Sublayers:
Pysical Layer Convergence Procedure (
PLCP)
Physical Medium Dependent (
PMD) sublayer
PLCP
map the MAC frame onto the medium, straddle between MAC and PHY, add a number of fields to the frame as it's transmitted into the air
PMD
transimit the frame
[References]
[Gast 2005]
[Stalling 2004]