We assess the impact of channel estimation errors in the uplink of a multicarrier code-division multiple-access (MC-CDMA) system. Channel estimates are computed by means of the least-mean-square (LMS) algorithm and are passed to either a linear minimum mean square error (MMSE) detector or to a non-linear parallel interference cancellation (PIC) receiver. Both single-antenna and multiple-antenna receivers are considered. It is shown that the system performance depends heavily on the quality of the channel estimates, confirming that channel estimation plays a crucial role in the uplink of the network.
Space-time multi-user detection for MC-CDMA systems in the presence of channel estimation errors
SANGUINETTI, LUCA;MORELLI, MICHELE;MENGALI, UMBERTO
2004-01-01
Abstract
We assess the impact of channel estimation errors in the uplink of a multicarrier code-division multiple-access (MC-CDMA) system. Channel estimates are computed by means of the least-mean-square (LMS) algorithm and are passed to either a linear minimum mean square error (MMSE) detector or to a non-linear parallel interference cancellation (PIC) receiver. Both single-antenna and multiple-antenna receivers are considered. It is shown that the system performance depends heavily on the quality of the channel estimates, confirming that channel estimation plays a crucial role in the uplink of the network.File in questo prodotto:
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