Performance of digital predistorter in system with analogue to digital converter

The baseband digital pre-distortion (DPD) signal processing technique is the most cost-effective linearisation method among other techniques to address nonlinearity effect of power amplifier. For communication systems containing DPD and amplifier, it difficult acquire performance metrics closed-forms for any architecture since there was no mathematical expression each coefficient. Usually, researchers look more efficient algorithms coefficients (compared existing ones) in terms computational complexity, delay, consumption etc. Consequently, evaluated through intensive simulation. In this paper, shown how one can exploit results recent work mathematically model indirect learning efficiently derive important measures systems. Expressions normalised mean square error (NMSE) achievable rate OFDM system are derived. modelled by exploiting closed-form expressions. derived expressions NMSE verified numerical simulations. Furthermore, bounds found assuming a perfect scenario. analytical validated