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