{HEAD ~ The base station} also has an antenna, and spread {TAIL ~ spectrum detectors} for recovering message data communicated from the remote units 
{ HEAD ~ The base station } also has an antenna , and spread { TAIL ~ spectrum detectors } for recovering message data communicated from the remote units
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH