Title :
An subspace-based blind multiuser detection in dispersive CDMA channels
Author :
Cai, Guoquan ; Yu, Dapeng ; Song, Wentao
Author_Institution :
Shangai JiaoTong Univ., Shanghai, China
fDate :
31 May-2 June 2004
Abstract :
This work investigates the discrete-time MIMO model of the dispersive CDMA channel. Then based on the identified signal subspace parameters and the channel response, two liner detectors that are a zero-forcing detector and a minimize-mean-square-error (MMSE) detector are analyzed. The simulation result shows that the linear MMSE detectors are capable of suppressing both multiple-access interference (MAI) and intersymbol interference (ISI) and the performance of the MMSE detector outperforms the matched filter.
Keywords :
MIMO systems; blind equalisers; code division multiple access; discrete time systems; dispersive channels; interference suppression; intersymbol interference; least mean squares methods; multiuser detection; ISI; MAI; MMSE; channel response; discrete-time MIMO model; dispersive CDMA channel; identified signal subspace parameter; intersymbol interference; minimize-mean-square-error detector; multiple-access interference; zero-forcing detector; Detectors; Dispersion; Interference suppression; Intersymbol interference; MIMO; Multiaccess communication; Multiple access interference; Multiuser detection; Signal analysis; Signal processing;
Conference_Titel :
Emerging Technologies: Frontiers of Mobile and Wireless Communication, 2004. Proceedings of the IEEE 6th Circuits and Systems Symposium on
Print_ISBN :
0-7803-7938-1
DOI :
10.1109/CASSET.2004.1322005
