Title :
Space-Time Adaptive Multiuser Detection for Direct-Sequence UWB-MIMO Systems
Author :
Liang, Zhonghua ; Zhu, Shihua ; Wang, Shaopeng
Author_Institution :
Dept. of Inf. & Commun. Eng., Jiaotong Univ., Xi´´an
Abstract :
In this paper, a multiuser detection (MUD) scheme employing joint adaptive filter and space-time signal processing is discussed and experimentally investigated for direct-sequence (DS) ultra-wideband (UWB) multiple-input multiple-output (MIMO) systems. In dense multipath environments, by taking advantage of the space-time filter structure in conjunction with simple transmit and/or receive diversity approaches, the investigated MUD scheme is capable of significantly improving the performance in combating multiuser interference (MUI) compared with the temporal MUD method based on single-antenna systems. The effects of transmit and/or receive diversity are also examined via the Monte-Carlo simulations.
Keywords :
MIMO communication; Monte Carlo methods; adaptive filters; diversity reception; interference (signal); multiuser detection; ultra wideband communication; Monte-Carlo simulations; direct-sequence ultra-wideband systems; multiple-input multiple-output systems; multiuser detection; multiuser interference; receive diversity; space-time filter; transmit diversity; Adaptive filters; Fading; Interference suppression; Intersymbol interference; MIMO; Multipath channels; Multiuser detection; Sampling methods; Transmitting antennas; Ultra wideband antennas;
Conference_Titel :
Wireless Communications and Networking Conference, 2007.WCNC 2007. IEEE
Conference_Location :
Kowloon
Print_ISBN :
1-4244-0658-7
Electronic_ISBN :
1525-3511
DOI :
10.1109/WCNC.2007.299
