Du är här

Downlink Capacity of Interference-Limited MIMO Systems

Downlink Capacity of Interference-Limited MIMO Systems with Joint Detection
Författare:
Publiceringsår: 2002
Språk: Engelska
Sidor: 849-853
Dokumenttyp: Konferensbidrag
Förlag: IEEE

Sammanfattning

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.

Disputation

Nyckelord

  • Technology and 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

Övriga

International Symposium on Personal, Indoor and Mobile Radio Communications PIMRC 2002
2002-09-15/2002-09-18
Lissabon
Published
Yes
  • ISBN: 0-7803-7589-0

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

 

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen