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