Layered group detection for multiuser MIMO wireless CDMA systems

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9 Citations (Scopus)


In this paper, we consider a multiuser Multiple Input Multiple Output (MIMO) CDMA system where each user is transmitting different streams spread with the same code on a set of multiple antennas. Signals from one user are received as one group and each user will be thought of as a virtual group. At the receiver, group ordered successive interference cancellation detection will be applied. Optimal and sub-optimal group detection orders that maximizes the system performance will then be derived. Various linear group detectors will be considered such as the linear decorrelators and a closed form expression of the optimal order will be given for the case of each of these group detectors. Numerical results will demonstrate significant gains in the system performance as well as the importance of group ordering.

Original languageEnglish
Article number1687748
Pages (from-to)2305-2311
Number of pages7
JournalIEEE Transactions on Wireless Communications
Issue number9
Publication statusPublished - 1 Sep 2006



  • CDMA
  • Group Decision Feedback Detection
  • Group detection
  • Layered Space-Time Processing
  • MIMO systems
  • Multiuser Detection
  • Symmetric Energy

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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