Experimental results of a type-based predistorter for SSPA linearization

In a wireless communication system, operation of a power amplifier near saturation is often desirable to fully utilize its capacity. Such an operation results in nonlinear distortions, thereby degrading performance of the communication system and introducing interference to adjacent channels. In this paper, we present experimental results using a novel, statistical technique to linearize the power amplifier response. The technique does not assume any parametric modeling of the power amplifier, and it is simple and easy to implement digitally at baseband. The results show that the technique reduces the effects of the nonlinearity significantly.