On the relative error probabilities of linear multiuser detectors

George V. Moustakides, H. Vincent Poor

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


The relative error-probability performance of three linear multiuser detectors-the minimum mean-square error detector, the decorrelator, and the conventional matched filter (MF) detector-is investigated under nonorthogonal signaling and additive white Gaussian noise conditions. It is shown that, contrary to the general belief, the minimum mean-square-error (MMSE) detector does not uniformly outperform the other two detectors. In fact, even for the two-user case, one can find counterexamples where the matched filter is significantly better.

Original languageEnglish (US)
Pages (from-to)450-456
Number of pages7
JournalIEEE Transactions on Information Theory
Issue number1
StatePublished - Jan 2001

All Science Journal Classification (ASJC) codes

  • Information Systems
  • Computer Science Applications
  • Library and Information Sciences


  • Code division multiple access (CDMA)
  • Multiuser detection


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