As viewed by the receiver, therefore, information in the time slot is bounded on both sides by known sequences; the preamble for this slot and {HEAD ~ the preamble} for {TAIL ~ the subsequent slot} 
for
As viewed by the receiver , therefore , information in the time slot is bounded on both sides by known sequences ; the preamble for this slot and { HEAD ~ the preamble } for { TAIL ~ the subsequent slot }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL