A wideband digital predistortion method based on programmable radio frequency

Abstract

In the context of growing signal bandwidth in modern communications, RF transmitters are encountering new challenges, with the linearity of power amplifiers becoming a crucial factor in system performance. The emergence of the digital predistortion technique addresses these challenges. A proposed broadband digital predistortion method, based on programmable RF, offers a linearized bandwidth of up to 100 MHz. This method effectively suppresses constellation shift and spectral leakage in signals, with faster convergence speed and lower computational complexity.