User discrimination using space-time receiver for DS/CDMA system
N.A. Al-Dabbous · Fifth IEE International Conference on 3G Mobile Communication Technologies (3G 2004) The Premier Technical Conference for 3G and Beyond · 2004
This paper presents a solution to mitigate the cochannel interference in the uplink of DS/CDMA systems over a multipath AWGN channel. A combination of adaptive array and interference cancellation methods is used to recover a weak signal sharing the same spatial domain as a strong interfering signal. Simulation results show that the proposed structure outperforms the conventional 2D Rake receiver by 8 dB at 10/sup -3/ BER under severe near-far situation. The ability of the spatial canceller to eliminate the strong interferers is demonstrated.