In this paper we present and compare several models of compensating the nonlinearity of the RF front-end of a wireless system. The baseband compensation techniques have gained more attentions due to the simplicity of DSP implementation and also utilizing adaptive algorithms. Two baseband compensation techniques; namely predistortion and postdistortion (equalization) of the baseband signal are discussed and teh problems associated with each one is addressed. Furthermore a combination of a predistorter and a nonlinear equalizer is studied. It is shown that under realistic conditions with a frequently saturated amplifier and ISI channel; the latter methods is able to compensate the nonlinearity up to a good extent; while the first two methods can only operate under certain channel conditions and nonlinearity type.