highlighted their main weaknesses. We now describe that DSP techniques can be useful for correction and compensation of TX impairments. Therefore they can have a crucial impact on transmitter architectures viability. We show that in addition to digital implementation, adaptive algorithms are of high interest for unsupervised tuning. We begin with a presentation of a Least Mean Square (LMS) algorithm in the context of RF default compensation. Predistortion and polar transmitter delay correction principles are then exposed. Finally, solutions for crest factor reduction are mentioned.