The reference signals are used to determine propagation characteristics of communication channels between the base and mobile stations and optimize, in real time, parameters of {HEAD ~ receivers} of {TAIL ~ the mobile stations} for processing the following data signals 
of
The reference signals are used to determine propagation characteristics of communication channels between the base and mobile stations and optimize , in real time , parameters of { HEAD ~ receivers } of { TAIL ~ the mobile stations } for processing the following data signals
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 REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH