The soft scaling factors are then applied to {TAIL ~ the initial symbol estimates} to generate {HEAD ~ the soft estimates} 
The soft scaling factors are then applied to { TAIL ~ the initial symbol estimates } to generate { HEAD ~ the soft estimates }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD