In this case, {HEAD ~ the interference} is the correlation between {TAIL ~ the CAZAC sequences} of different bandwidths 
In this case , { HEAD ~ the interference } is the correlation between { TAIL ~ the CAZAC sequences } of different bandwidths
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH