Wideband Adaptive Predistortion Algorithm Based on LUT and Memory-effect Compensation Techniques

To obtain the good performance for linearization, a digital predistortion algorithm is presented. Look-Up-Table (LUT) and memory-effect compensation techniques is combed, and the linear interpolation method is applied to the LUT. Compared to memory polynomial methods, this predistortion technique can reduce the complexity of calculation and obtain the good performance for linearization. Under power amplifiers memory polynomial model, the simulation results for Orthogonal Frequency Division Multiplexing (OFDM) wideband signal show the excellent linearization purpose for memory nonlinear power amplifier.