Referring to the figures, FIG 1 depicts a schematic diagram illustrating {HEAD ~ a portion} of {TAIL ~ a wireless communication system} 100 adapted for implementing an embodiment of the present invention, and FIG 2 depicts a schematic timing diagram 200 of reference and data signals used in the system 100 as a function of time  
Referring to the figures , FIG 1 depicts a schematic diagram illustrating { HEAD ~ a portion } of { TAIL ~ a wireless communication system } 100 adapted for implementing an embodiment of the present invention , and FIG 2 depicts a schematic timing diagram 200 of reference and data signals used in the system 100 as a function of time
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 TAIL 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 OTH OTH OTH OTH OTH OTH OTH OTH