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A beamformer for CDMA with enhanced near-far resistance

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3 Author(s)
Hansen, H. ; Dept. of Telecommun., Tech. Univ., Lyngby, Denmark ; Affes, S. ; Mermelstein, P.

The spatio-temporal array-receiver (STAR) achieves good performance in CDMA with multiple receiving antennas where the interference can be characterized as AWGN uncorrelated with the signal. To enhance its near-far resistance in correlated noise environments, we introduce optimal combining of the spatio-temporal components. Nearly as good performance can be obtained with a low complexity adaptive beamformer combination of the antenna and multipath diversity branches. Simulation results indicate that the modified STAR manifests significant gain in near-far resistance over its original version, more so with more branches. They also suggest that exploiting additional temporal correlation fingers as interference references can further improve near-far resistance in poor diversity situations

Published in:

Communications, 1999. ICC '99. 1999 IEEE International Conference on  (Volume:3 )

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