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Subspace tracking for group-blind multiuser detection in asynchronous DS-CDMA systems

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3 Author(s)
Jae-Chon Yu ; TR Labs., Calgary Univ., Alta., Canada ; Host-Madsen, A. ; Xiadong Wang

This paper considers the real-time implementation of group-blind multiuser detection in the uplink of CDMA systems. The class of group-blind multiuser detectors is used in the situation where a group of users have unknown codes, while another has known codes, for example in the uplink of a CDMA system. Previous papers have only considered block based implementation. In this paper, for the real-time implementation and tracking the non-stationary channel characteristics, we propose using the FASIR (FAst Subspace Iteration with Ritz acceleration) algorithm for subspace tracking. Moreover, we use a Kalman-type of algorithm for the blind channel estimation

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Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st  (Volume:2 )

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