On phase-space equalization of CPM in severe intersymbol interference. - Frank Althaus; Armin Wittneben (ICASSP (4), 2003)

Channel estimation with hard limiter receiver as key technology for low cost wireless systems. - Frank Althaus; Armin Wittneben (ICC, 2003)

Ultra-Wideband Geo-Regioning: A Novel Clustering and Localization Technique. - Christoph Steiner; Frank Althaus; Florian Troesch; Armin Wittneben (EURASIP J. Adv. Signal Process., 2008)