an initial phase calculation unit configured to calculate initial phase information using {HEAD ~ a preamble} and a postamble of {TAIL ~ a data packet} applied thereto 
of
an initial phase calculation unit configured to calculate initial phase information using { HEAD ~ a preamble } and a postamble of { TAIL ~ a data packet } applied thereto
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH