Combined adaptive interference cancellation with antenna array for CDMA systems

We combined the multistage adaptive parallel interference canceller with an antenna array. Two combination schemes are proposed. In the first approach, interference cancellation is performed at each element of the antenna followed by beamforming. The second method reduces the complexity by carrying out beamforming first. The output of the beamformer is used by the interference canceller. The proposed method provides a better performance than the array decorrelating detector at a considerably low complexity.