Performance of the smart antenna aided multicarrier DS-CDMA uplink

In this contribution, a generalized MC DS-CDMA system invoking smart antennas for improving the achievable performance of the system is studied, which is capable of suppressing the multiuser interference, while achieving frequency, time and spatial diversity. In the considered MC DS-CDMA system, the receiver employs multiple receive antennas and each of the receive antennas consists of several antenna array elements. Four types of optimum linear combining schemes are investigated. In these optimum linear combining schemes the weight vectors are derived based on the optimization criteria of minimum variance distortionless response (MVDR), the maximum signal-to-interference-plus-noise ratio (MSINR), the minimum mean-square error (MMSE) and the minimum power distortionless response (MPDR). The paper concludes with a comparative performance study of various antenna array models employing the above optimization criteria.