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