Blind multi-user-detection for TH-UWB systems in UWB channels

Authors:
Chia-Hsin Cheng;Wen-Jun Lin;Kai-Jie Chen
Affiliations:
The Department of Computer and Communication Engineering, Chaoyang University of Technology, Taiwan;The Institute of Communication Engineering, National Chung Cheng University, Taiwan;The Department of Computer and Communication Engineering, Chaoyang University of Technology, Taiwan
Venue:
ICCOM'08 Proceedings of the 12th WSEAS international conference on Communications
Year:
2008

Citing 12
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Abstract

A subspace-based blind adaptive linear minimum mean square error (MMSE) detector has been proposed for multi-user detection in a direct sequence code-division multiple-access (CDMA) system even when multi-path channels are unknown. In this paper, the applicability of the subspace-based blind adaptive algorithm in multiple access ultra-wideband (UWB) systems is investigated. The problem of blind demodulation of multi-user information symbols in a high-rate UWB network in the presence of both multiple access interference (MAI) and inter-symbol interference (ISI) is also considered. Moreover, the Rake receiver is adopted to collect multi-path gains. The performance of the subspace-based blind techniques is shown under time-variant UWB multi-path channels.