Title :
RBF based multiuser detectors for UTRA-TDD
Author :
Sessler, Gunther M A ; Martoyo, Ihan ; Jondral, Friedrich K.
Author_Institution :
Inst. fur Nachrichtentechnik, Karlsruhe Univ., Germany
fDate :
6/23/1905 12:00:00 AM
Abstract :
Two radial-basis function (RBF) based detectors which are used as multiuser detectors (MUD) for the UTRA-TDD mode of IMT-2000, are presented. One of the RBF detectors is chip level based (CLB) and the other is preprocessesing based (PPB). A detailed performance evaluation, based on new simulation results of the RBF detectors in the UTRA-TDD system, is presented. These results illustrate that the detectors achieve low BERs, even for time-variant multipath propagation channels (pedestrian, vehicular test environment). Furthermore, it is shown that the BER of the RBF based detector is virtually independent of the number of users. On the down side, the complexity of the detectors is significantly affected by the number of users.
Keywords :
error statistics; land mobile radio; multipath channels; multiuser channels; radial basis function networks; radio access networks; signal detection; telecommunication computing; time-varying channels; 3G mobile communication system; 3GPP; 3rd Generation Partnership Project; BER; DS-CDMA; IMT-2000; RBF based multiuser detectors; UMTS terrestrial radio access; UTRA-TDD standard; UTRA-TDD system; chip level based detectors; detector complexity; pedestrian; performance evaluation; preprocessesing based detectors; radial-basis function based detectors; simulation results; time-invariant multipath propagation channels; time-variant multipath propagation channels; vehicular test environment; 3G mobile communication; Channel estimation; Detectors; Downlink; Maximum likelihood detection; Maximum likelihood estimation; Multiaccess communication; Multiple access interference; Multiuser detection; Pattern recognition;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Fall. IEEE VTS 54th
Print_ISBN :
0-7803-7005-8
DOI :
10.1109/VTC.2001.956647
