FIG 17 provides a general schematic of the entire decoding process including different modules and {HEAD ~ the provision} for using {TAIL ~ two update functions} 
for using
FIG 17 provides a general schematic of the entire decoding process including different modules and { HEAD ~ the provision } for using { TAIL ~ two update functions }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL