In some exemplary embodiments, normalized symbol estimates or {HEAD ~ MMSE symbol estimates} are scaled to produce {TAIL ~ maximum likelihood estimates} for decoding 
scaled to produce
In some exemplary embodiments , normalized symbol estimates or { HEAD ~ MMSE symbol estimates } are scaled to produce { TAIL ~ maximum likelihood estimates } for decoding
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH