In this paper we propose a reduced rank space-time receiver for multi-user time slotted CDMA systems. The channel estimation is based on an under-parameterization of the space-time channel model. The channels for all users are estimated jointly by constraining the channel matrix of each user to be low-rank. As the rank depends on the interference level and the characteristics of the propagation environment (delay and angle spreads), the rank-order is estimated adaptively for each user according to the MDL criterion (Minimum Description Length).

Adaptive-rank receiver for space-time DS-CDMA systems

NICOLI, MONICA BARBARA;SPAGNOLINI, UMBERTO
2001

Abstract

In this paper we propose a reduced rank space-time receiver for multi-user time slotted CDMA systems. The channel estimation is based on an under-parameterization of the space-time channel model. The channels for all users are estimated jointly by constraining the channel matrix of each user to be low-rank. As the rank depends on the interference level and the characteristics of the propagation environment (delay and angle spreads), the rank-order is estimated adaptively for each user according to the MDL criterion (Minimum Description Length).
IEEE VTS 53rd Vehicular Technology Conference, 2001. VTC 2001 Spring.
0780367286
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/240303
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