Analysis and Performance Evaluation of Digital Predistorter for High Power Amplifiers

In this paper the implementation of modeled digital Predistorter on power amplifier has been presented and analyzed using matrix decomposition method. The nonlinear coefficients are calculated using matrix decomposition method which has numerical stability and reduced operation. The fast convergent memory polynomial model has been used for the design. The approach of the design is to reduce the complexity and computation. Its performance has been verified in terms of various parameters like Adjacent Channel Power Ratio (ACPR), Error Vector Magnitude (EVM) and power spectral density.