Title :
Time-varying multiuser detection for DS-CDMA in doubly-selective channels
Author :
Leus, Geert ; Moonen, Marc
Author_Institution :
K.U.Leuven-ESAT, Leuven, Belgium
Abstract :
The problem of multiuser detection for DS-CDMA in doubly-selective (timeand frequency-selective) channels is considered, and a time-varying multiuser detector (TV-MUD) to solve this problem is proposed. Using a basis expansion model (BEM) to model the doubly-selective channel and the TV-MUD, we derive a closed-form expression for the BEM coefficients of the TV-MUD as a function of the BEM coefficients of the doubly-selective channel. The criterion we use is the symbol mean-square error.
Keywords :
code division multiple access; mean square error methods; multiuser detection; spread spectrum communication; telecommunication channels; DS-CDMA; basis expansion model; code division multiple access; doubly-selective channel; frequency-selective channel; symbol mean-square error; time-selective channel; time-varying multiuser detection; Closed-form solution; Communication system control; Counting circuits; Detectors; Fading; Frequency; Laboratories; Multiaccess communication; Multiuser detection; Wireless communication;
Conference_Titel :
Signal Processing and Its Applications, 2003. Proceedings. Seventh International Symposium on
Print_ISBN :
0-7803-7946-2
DOI :
10.1109/ISSPA.2003.1224746
