Multiuser detection with differentially encoded data for mismatched flat Rayleigh fading CDMA channels
Peter Hsin-Yu Wu, Alexandra Duel‐Hallen · NCSU Libraries Repository (North Carolina State University Libraries) · 1996
In this paper, we evaluate the performance of several multiuser detectors for flat Rayleigh fading CDMA channels without perfect knowledge of fading channel coefficients.The fading channel is modeled as a second order Auto Regressive (AR) process and is estimated using a Kalman filter.Burst errors caused by phase reversal of channel estimates can be effectively resolved by using differential encoding.The Bit Error Rates (BERs) of these multiuser detectors with Kalman channel estimators are evaluated through analysis and simulations.The results show that the decorrelator is more robust than other more complex multiuser detectors.