A dump signal 1182 clears the accumulators at {HEAD ~ the end} of {TAIL ~ each symbol period} 
of
A dump signal 1182 clears the accumulators at { HEAD ~ the end } of { TAIL ~ each symbol period }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL