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Downlink Capacity of Interference-Limited MIMO Systems

  • H Dai
  • Andreas Molisch
  • H V Poor
Publiceringsår: 2002
Språk: Engelska
Sidor: 849-853
Publikation/Tidskrift/Serie: [Host publication title missing]
Dokumenttyp: Konferensbidrag
Förlag: IEEE--Institute of Electrical and Electronics Engineers Inc.


In a paper by Dai and Molisch (see Proc. IEEE VTC 2002 Spring, Birmingham, AL, May 2002), space-time layered architectures (BLAST) and turbo coding/processing techniques, which are effective for single-link transmission, are combined with multiuser detection (MUD) methods for combating intercell interference. It is shown that, depending on the channel configuration, linear MMSE or successive interference cancellation (SIC) can be the preferable MUD method. Based on this fact, an adaptive scheme is developed. T/sup h/e downlink capacity of interference-limited multiple-input multiple-output (MIMO) cellular systems is investigated. It is found that the obtained MUD capacity is excellent in high to medium SIR scenario, but still deteriorates in strong interference environments, leaving ample room for possible improvement through other techniques. The performance of the proposed adaptive MUD scheme in a standard cellular environment, both in the non-line-of-sight (NLOS) and the line-of-sight (LOS) case, is simulated, and the advantages over the standard V-BLAST scheme are quantified.


  • Electrical Engineering, Electronic Engineering, Information Engineering
  • wireless LAN
  • turbo codes
  • time division multiple access
  • multiuser detection
  • least mean squares methods
  • interference suppression
  • code division multiple access
  • cochannel interference
  • channel capacity
  • MIMO systems
  • cellular radio


International Symposium on Personal, Indoor and Mobile Radio Communications PIMRC 2002
  • ISBN: 0-7803-7589-0

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