Blind Reduced-Rank MMSE Detector for DS-CDMA Systems

  title={Blind Reduced-Rank MMSE Detector for DS-CDMA Systems},
  author={Xiaodong Cai and Hongya Ge and Ali N. Akansu},
  journal={EURASIP J. Adv. Sig. Proc.},
We first develop a reduced-rank minimum mean square error (MMSE) detector for direct-sequence (DS) code division multiple access (CDMA) by forcing the linear MMSE detector to lie in a signal subspace of a reduced dimension. While a reduced-rank MMSE detector has lower complexity, it cannot outperform the full-rank MMSE detector. We then concentrate on the blind reduced-rank MMSE detector which is obtained from an estimated covariance matrix. Our analysis and simulation results show that when… CONTINUE READING
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