A dual-mode multiuser detector for DS-CDMA systems
Mingxi Fan, Kai-Yeung Sunny Siu · IEEE Journal on Selected Areas in Communications · 2002
We introduce a dual-mode multiuser detector that dynamically switches its detection mode between matched-filter and decorrelator operations based on the channel characteristics. This detector significantly reduces the overall computational requirement while maintaining similar performance as that of the decorrelator. The switching mechanism of our dual-mode detector is designed by exploiting the performance-complexity tradeoff between the decorrelator and the matched-filter. Extensions of this idea to other types of multiuser detectors are also proposed.