In mobile radio receivers, the transmission power must be raised before the start of {TAIL ~ the transmission process}, and must be reduced again after the end of {HEAD ~ the transmission process} 
In mobile radio receivers , the transmission power must be raised before the start of { TAIL ~ the transmission process } , and must be reduced again after the end of { HEAD ~ the transmission process }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD