Digital predistortion techniques for linearized power amplifiers

Abstract

Future generations of wireless communications are expected to place increasing burdens on the efficiency and linearity of power amplifiers, due to the use of more complex multi-carrier waveforms and OFDM. This has implications for the design of transmitters in portable/mobile devices as well as base stations and access points. This paper will summarize the digital predistortion techniques that can be employed to improve the performance of wireless power amplifiers.