To decrease the probability of early misdetection, {HEAD ~ the sync mark} is chosen to have minimum correlation with {TAIL ~ shifted versions} of the sync mark concatenated with the preamble field 
To decrease the probability of early misdetection , { HEAD ~ the sync mark } is chosen to have minimum correlation with { TAIL ~ shifted versions } of the sync mark concatenated with the preamble field
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH