Techniques often used in the area of adaptive array signal processing
are applied to the multiuser defection problem, The results of this ef
fort include a robust detector, suitable for use in the presence of mo
deling errors, and a reduced-rank detector with improved transient beh
avior relative to full-rank detectors, Algorithm performance is presen
ted in the form of bit-error-rate (BER) curves and least mean square (
LMS)-like learning curves.