Downlink Capacity of Interference-Limited MIMO Systems

H Dai, Andreas Molisch, H V Poor

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

Abstract

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.
Original languageEnglish
Title of host publication[Host publication title missing]
PublisherIEEE - Institute of Electrical and Electronics Engineers Inc.
Pages849-853
ISBN (Print)0-7803-7589-0
Publication statusPublished - 2002
EventInternational Symposium on Personal, Indoor and Mobile Radio Communications PIMRC 2002 - Lissabon
Duration: 2002 Sept 152002 Sept 18

Conference

ConferenceInternational Symposium on Personal, Indoor and Mobile Radio Communications PIMRC 2002
Period2002/09/152002/09/18

Subject classification (UKÄ)

  • Electrical Engineering, Electronic Engineering, Information Engineering

Free 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

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