Array processing and multishot separator for WCDMA uplink transmission

In order to increase the capacity of WCDMA systems in the uplink while avoiding complexity, we investigate a space-time configuration by employing jointly beamforming and multishot multiuser separation. Such a joint structure provides a better bit error rate performance than either techniques used separately. Specifically, we propose a less complex space-time configuration, which is robust to multiple access interference (MAI) over a frequency selective Rayleigh fading channel. We investigate the BER performance of the system by Monte Carlo simulations. The results obtained show that applying space-time processing using a simple beamforming and multishot separator can improve the performance of WCDMA systems considerably.