{TAIL ~ A soft scaling factor} for {HEAD ~ the symbol} of interest is computed from the interference rejection terms 
{ TAIL ~ A soft scaling factor } for { HEAD ~ the symbol } of interest is computed from the interference rejection terms
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH