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