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