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