As applied to HDTV digital transmission, this will provide {HEAD ~ a priori knowledge} of {TAIL ~ the actual transmitted training sequence}, so that the difference between the transmitted and received sequences can be measured directly and used for equalization 
As applied to HDTV digital transmission , this will provide { HEAD ~ a priori knowledge } of { TAIL ~ the actual transmitted training sequence } , so that the difference between the transmitted and received sequences can be measured directly and used for equalization
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH