Combined space-time multiuser receivers for wideband DS/CDMA communications

It is well known that the capacity of a code division multiple access system is limited by cochannel interference (CCI), which includes both multiple access interference (MAI) and intersymbol interference (ISI). We discuss possible solutions to mitigate the CCI, which include interference canceller, adaptive antenna and the combination of both. Besides, we propose a combined space-time receiver with simplified complexity using pre-beamforming. Simulation results of the receivers with different configurations are shown.

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