Adaptive Digital Predistortion for Wideband Multicarrier Systems
01 January 2001
This paper presents measured results for a wideband digital predistortion system intended for 3G base station applications. Improvement in spectral regrowth of more than 20 dB is reported for up to three UMTS carriers. To the best of the authors' knowledge, this is the best performance so far reported in the literature for such a system. This excellent performance is achieved with the use of novel algorithms that take into account memory effects in the power amplifier.