Blind Adaptive Multiuser Detection

Michael Honig, Upamanyu Madhow, Sergio Verdú

Research output: Contribution to journalArticle

1133 Scopus citations

Abstract

The decorrelating detector and the linear minimum mean-square error (MMSE) detector are known to be effective strategies to counter the presence of multiuser interference in code-division multiple-access channels; in particular, those multiuser detectors provide optimum near-far resistance. When training data sequences are available, the MMSE multiuser detector can be implemented adaptively without knowledge of signature waveforms or received amplitudes. This paper introduces an adaptive multiuser detector which converges (for any initialization) to the MMSE detector without requiring training sequences. This blind multiuser detector requires no more knowledge than does the conventional single-user receiver: the desired user's signature waveform and its timing. The proposed blind multiuser detector is made robust with respect to imprecise knowledge of the received signature waveform of the user of interest.

Original languageEnglish (US)
Pages (from-to)944-960
Number of pages17
JournalIEEE Transactions on Information Theory
Volume41
Issue number4
DOIs
StatePublished - Jul 1995

All Science Journal Classification (ASJC) codes

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

Keywords

  • Multiuser detection
  • blind equalization
  • code-division multiple access
  • minimum mean-square error detection
  • multiple-access channels

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