A radio frequency signal is received from a transmission channel into a receive path, and {HEAD ~ delay} spread in the radio frequency signal is estimated using {TAIL ~ an analysis circuit} 
A radio frequency signal is received from a transmission channel into a receive path , and { HEAD ~ delay } spread in the radio frequency signal is estimated using { TAIL ~ an analysis circuit }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL