Subspace-based Blind Multi-user Detection for TH-UWB Systems in Multi-path Channels
نویسندگان
چکیده
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. Key-Words: Ultra-wideband, Blind adaptation, Multi-user detection, Subspace tracking.
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Blind Multi-user Detection for TH-UWB Systems in UWB Channels
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...
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