A reference signal having an inverted carrier phase from that of the synchronizing signal part is inserted between {HEAD ~ the synchronizing signal part} and {TAIL ~ the control part} 
A reference signal having an inverted carrier phase from that of the synchronizing signal part is inserted between { HEAD ~ the synchronizing signal part } and { TAIL ~ the control part }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL