Linear and linear-conjugate/linear (LC/L) receivers for CDMA systems in fading channels

We consider linear one-shot multiuser detection in possibly dispersive fading channels. We show that prior knowledge of the fading coefficients may be fully exploited by resorting to linear-conjugate/linear (LC/L) processing, wherein not only the original data, but also their complex conjugates are independently processed. Simulation results show that LC/L schemes largely outperform the conventional detectors, whether of the zero-forcing or of the minimum-mean square error type.