Space-time multiuser detection in multipath CDMA channels

Xiaodong Wang, H. Vincent Poor

Research output: Contribution to journalArticlepeer-review

214 Scopus citations


The problem of multiuser detection in multipath CDMA channels with receiver antenna array is considered. The optimal space-time multiuser receiver structure is first derived, followed by linear space-time multiuser detection methods based on iterative interference cancellation. Blind adaptive space-time multiuser detection techniques are then proposed, which require prior knowledge of only the spreading waveform and the timing of the desired user's signal. Single-user-based space-time processing methods are also considered and are compared with the multiuser approach. It is seen that the proposed multiuser space-time processing techniques offer substantial performance gains over the single-user-based methods, especially in a near-far situation.

Original languageEnglish (US)
Pages (from-to)2356-2374
Number of pages19
JournalIEEE Transactions on Signal Processing
Issue number9
StatePublished - 1999

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Electrical and Electronic Engineering


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