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Downlink Capacity of Interference-Limited MIMO Systems

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Author

  • H Dai
  • Andreas Molisch
  • H V Poor

Summary, in English

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.

Publishing year

2002

Language

English

Pages

849-853

Publication/Series

[Host publication title missing]

Document type

Conference paper

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • 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

Conference name

International Symposium on Personal, Indoor and Mobile Radio Communications PIMRC 2002

Conference date

2002-09-15 - 2002-09-18

Status

Published

ISBN/ISSN/Other

  • ISBN: 0-7803-7589-0