Messages utilized by these decoders are quantized to {HEAD ~ certain levels} based on the number of bits allowed for representation in {TAIL ~ hardware} 
Messages utilized by these decoders are quantized to { HEAD ~ certain levels } based on the number of bits allowed for representation in { TAIL ~ hardware }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL