In the case of the GSM mobile radio system, which operates using {TAIL ~ the GMSK modulation method}, the described problem has been solved using complex circuitry for the power amplifier and for controlling {HEAD ~ the power amplifier} 
In the case of the GSM mobile radio system , which operates using { TAIL ~ the GMSK modulation method } , the described problem has been solved using complex circuitry for the power amplifier and for controlling { HEAD ~ the power amplifier }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD