A method for controlling a transmitter power control system in communication networks that include a modulation scheme having a non-constant amplitude envelope. The method includes generating a transmission signal and transitioning the transmission signal from a first specified power level to a second specified power level and having a transition period therebetween, and generating a constant amplitude envelope modulation of the transmission signal during the transition period. The method may further include generating a non-constant amplitude envelope modulation of the transmission signal at the first specified power level, switching to the constant amplitude envelope modulation of the transmission signal during the transition period and generating the non-constant amplitude envelope modulation of the transmission signal at the second specified power level. A mobile communication device may be used to perform the method.