CDMA wireless system with blind multiuser detector

• Autorzy: Leong W. Y. , Homer J.
• Języki publikacji: EN

Abstrakty

EN

In this paper we present an approach capable of countering the presence of multiple access interference (MAI) in code division multiple access (CDMA) channels. We develop and implement a blind multiuser detector, based on an independent component analysis (ICA) to mitigate both MAI and noise. This algorithm has been utilized in blind source separation (BSS) of unknown sources from their linear mixtures. It can also be used for estimation of the basis vectors of BSS. The aim is to include an ICA algorithm within a wireless receiver in order to reduce the level of interference in CDMA systems. This blind multiuser detector requires less precise knowledge of the channel than does the conventional single-user receiver. The proposed blind multiuser detector is made robust with respect to imprecise knowledge of the received signature waveforms of the user of interest. Several experiments are performed in order to verify the validity of the proposed learning algorithm.

Słowa kluczowe

EN

code division multiple access; independent component analysis; blind source separation

• Wydawca: Instytut Łączności - Państwowy Instytut Badawczy
• Czasopismo: Journal of Telecommunications and Information Technology
• Rocznik: 2006
• Tom: nr 1
• Strony: 69--75
• Opis fizyczny: Bibliogr. 15 poz., il.

Twórcy

autor

Leong W. Y.

autor

Homer J.

• School of Information Technology, and Electrical Engineering, The University of Queensland, Brisbane QLD 4072, Australia and School of Electronics and Electrical Engineering, Imperial College London, South Kensington, SW7 2BT, United Kingdom,

Bibliografia

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