A power amplifier pre-distorter is formed by a FIR filter structure that includes an individual look-up table for each filter tap, where each look-up table represents a sampled polynomial in a variable representing signal amplitude. An absolute value block selects, from each filter tap look-up table,...http://www.google.de/patents/US7746955?utm_source=gb-gplus-sharePatent US7746955 - Power amplifier pre-distortion
